RP506L

RP506L NISSHINBO | Alldatasheet

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2 A PWM/VFM Step-down DC/DC Converter with Synchronous

Rectifier for Automotive Applications No. EC -296-210909 OUTLINE The RP506L is a low supply current CMOS-based PWM/VFM step-down DC/DC converter with synchronous rectifier featuring 2 A(1) output current. Internally, a single converter consists of an oscillator, a reference voltage unit, an error amplifier, a switching control circuit, a mode control circuit, a soft start circuit, a latch type protection circuit, an under-voltage lockout (UVLO) circuit, a thermal shutdown circuit, and switching transistors. The RP506L is employing synchronous rectification for improving the efficiency of rectification by replacing diodes with built-in switching transistors. Using synchronous rectification not only increases circuit performance but also allows a design to reduce parts count. Power controlling method can be selected from forced PWM control type or PWM/VFM auto switching control type by inputting a signal to the MODE pin . In low output current, f orced PWM control switches at fixed frequency rate in order to reduce noise. Likewise, in low output current, PWM/VFM auto switching control automatically switches from PWM mode to VFM mode in order to achieve high efficiency. Output voltage type can be selected from an internally fixed output voltage type (RP506L xx1G/H/K/L) or an externally adjustable output voltage type (RP506L 001N/M). The output voltage accuracy of the RP506Lxx1G/H/K/L is as high as ± 1.5% or ±18 mV. The output voltage of the RP506L001N/M can be set by using the external resistors. Oscillator frequency can be selected from 2.3 MHz (RP506Lxx1G/H//N) or 1.2 MHz (RP506Lxx1K/L/M). Soft- start time is Typ. 150 µs, and by connecting an external capacitor to the TSS pin, soft-start time is adjustable. Power good (PG) function monitors the V OUT pin voltage or the feedback pin voltage (V FB), and switches the PG pin to low if any abnormal condition is detected. Protection circuits included in the RP506L are over current protection circuit, latch type protection circuit and thermal shutdown circuit. Over current protection circuit supervises the inductor peak current in each switching cycle, and if the current exceeds the L X current limit (I LXLIM), it tur ns off Pch Tr. Latch type protection circuit latches the built-in driver to the OFF state and stops the operation of the step- down DC/DC converter if the over current status continues or V OUT continues being the half of the setting voltage for equal or longer than protection delay time (tprot). Thermal shutdown circuit detects overheating of the converter if the output pin is shorted to the ground pin (GND) etc. and stops the converter operation to protect it from damage if the junction temperature exceeds the specified temperature. The RP506L is available in DFN3030-12 which achieves high-density mounting on boards. (1) This is an approximate value. The output current is dependent on conditions and external components.

No. EC-296-210909

FEATURES

 Input Voltage Range (Maximum Rating) ······· 2.5 V to 5.5 V (6.5 V) −40°C to 125°C (RP506Lxx1x-TR-K) Version Forced PWM Control PWM/VFM Auto Switching Control RP506Lxx1G/H 1.1 V to 3.3 V 0.8 V to 3.3 V RP506L001N 1.1 V to 4.0 V 0.8 V to 4.0 V RP506Lxx1K/L 0.8 V to 3.3 V RP506L001M 0.6 V to 4.0 V ±18 mV (VSET < 1.2 V) (RP506Lxx1G/H/K/L)  Output Voltage/Feedback Voltage

APPLICATIONS

 Power supply for accessories such as car audios, car navigation systems, and ETC systems  Power supply for electronic control units such as EV inverter and battery charge control unit . (1) Refer to Selection Guide for detailed information. (2) VSET = Set Output Voltage

No. EC -296-210909 SELECTION GUIDE The set output voltage, the output voltage type, the auto-discharge function(1), and the oscillator frequency for the ICs are user-selectable options. Selection Guide Product Name Package Quantity per Reel Pb Free Halogen Free RP506Lxx1$-TR-# DFN3030−12 3,000 pcs Yes Yes xx: Designation of the set output voltage (VSET) (2) For Adjustable Output Voltage Type: 00 only $: Designation of Version Version Output Voltage Type Auto-discharge Function Oscillator Frequency VSET Forced PWM PWM/VFM Auto Switching RP506Lxx1G Fixed No RP506L001N Adjustable No 1.1 V to 4.0 V 0.8 V to 4.0 V RP506Lxx1K Fixed 1.2 MHz 0.8 V to 3.3 V RP506Lxx1L Yes RP506L001M Adjustable No 0.6 V to 4.0 V #: Quality Class # Operating Temperature Range Test Temperature A −40°C to 105°C 25°C, High K −40°C to 125°C Low, 25°C, High (1) Auto-discharge function quickly lowers the output voltage to 0 V, when the chip enable signal is switched from the active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor. (2) VSET can be set only within the specified range of voltage. Refer to Designation of Version for detailed information. (3) 0.05 V step is also available as a custom code.

No. EC-296-210909 BLOCK DIAGRAMS CE PVIN AGND LX Chip Enable Ramp Compensation Current Feedback Current Detector Switching Control UVLO OSC Vref VOUT Mode Control Soft Start PGND MODE Thermal Protection AVIN TSS (“L” during Soft Start) PG Over /Under Voltage Detection OVD UVD RP506Lxx1G/K Block Diagram CE PVIN AGND LX Chip Enable Ramp Compensation Current Feedback Current Detector Switching Control UVLO OSC Vref VOUT Mode Control Soft Start PGND MODE Thermal Protection AVIN TSS (“L” during Soft Start) PG Over /Under Voltage Detection OVD UVD RP506Lxx1H/L Block Diagram

No. EC -296-210909 CE PVIN AGND LX Chip Enable Ramp Compensation Current Feedback Current Detector Switching Control UVLO OSC Vref VFB Mode Control Soft Start PGND MODE Thermal Protection AVIN TSS (“L” during Soft Start) PG Over /Under Voltage Detection OVD UVD RP506L001N/M Block Diagram

No. EC-296-210909 PIN DESCRIPTIONS Top View Bottom View1 DFN3030-12 Pin Configurations DFN3030-12 Pin Descriptions Pin No. Symbol Description

1 PVIN PVIN Input Voltage Pin(2)

2 PVIN PVIN Input Voltage Pin(2)

3 AVIN AVIN Input Voltage Pin(2)

4 PG Power Good Pin

5 CE Chip Enable Pin (Active “H”)

6 MODE Mode Control Pin

(“H”: forced PWM control, “L”: PWM/VFM auto switching control)

7 TSS Soft-start Pin

8 VOUT/ VFB Output/ Feedback Voltage Pin

9 AGND Analog Ground Pin(3)

10 LX Switching Pin

11 NC No Connection

12 PGND Power Ground Pin(3)

(1) The tab on the bottom of the package enhances thermal performance and is electrically connected to GND (substrate level). It is recommended that the tab be connected to the ground plane on the board, or otherwise be left floating. (2) No.1 pin, No.2 pin and No.3 pin must be wired to the VIN plane when mounting on boards. (3) No.9 pin and No.12 pin must be wired to the GND plane when mounting on boards. 1 12 1 6 7 11 (1)

No. EC -296-210909 ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings (AGND = PGND = 0 V) Symbol Item Rating Unit VIN A/PVIN Pin Voltage −0.3 to 6.5 V VLX LX Pin Voltage −0.3 to A/PVIN +0.3 V VCE CE Pin Voltage −0.3 to 6.5 V VOUT/ VFB VOUT/VFB Pin Voltage −0.3 to 6.5 V VMODE MODE Pin Voltage −0.3 to 6.5 V VPG PG Pin Voltage −0.3 to 6.5 V VTSS TSS Pin Voltage −0.3 to AVIN+0.3 V ILX LX Pin Output Current 2.8 A PD Power Dissipation(1) DFN3030−12 JEDEC STD. 51-7 Test Land Pattern 4300 mW Tj Junction Temperature Range −40 to 150 °C Tstg Storage Temperature Range −55 to 150 °C ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the lifetime and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured. RECOMMENDED OPERATING CONDITIONS Recommended Operating Conditions Symbol Item Rating Unit VIN Input Voltage 2.5 to 5.5 V Ta Operating Temperature Range RP506Lxx1x-TR-A −40 to 105 °C RP506Lxx1x-TR-K −40 to 125 °C RECOMMENDED OPERATING CONDITIONS All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions. (1) Refer to POWER DISSIPATION for detailed information.

No. EC-296-210909

ELECTRICAL CHARACTERISTICS

The specifications surrounded by are guaranteed by design engineering at −40°C ≤ Ta ≤ 105°C. RP506Lxx1 Electrical Characteristics (Ta = 25°C) Symbol Item Conditions Min. Typ. Max. Unit Istandby Standby Current A/PVIN = 5.5 V, VCE = 0 V 0 5 µA ICEH CE “H” Input Current A/PVIN = VCE = 5.5 V −1 0 1 µA ICEL CE “L” Input Current A/PVIN = 5.5 V, VCE = 0 V −1 0 1 µA IMODEH MODE “H” Input Current A/PVIN = VMODE = 5.5 V, VCE = 0 V −1 0 1 µA IMODEL MODE “L” Input Current A/PVIN = 5.5 V, VCE = VMODE = 0 V −1 0 1 µA ILXLEAKH LX Leakage Current “H” A/PVIN = VLX = 5.5 V, VCE = 0 V −1 0 6 µA ILXLEAKL LX Leakage Current “L” A/PVIN = 5.5 V, VCE = VLX = 0 V −15 0 1 µA VCEH CE “H” Input Voltage A/PVIN = 5.5 V 1.0 V VCEL CE “L” Input Voltage A/PVIN = 2.5 V 0.4 V VMODEH MODE “H” Input Voltage A/PVIN = 5.5 V 1.0 V VMODEL MODE “L” Input Voltage A/PVIN = 2.5 V 0.4 V RONP On Resistance of Pch Transistor A/PVIN = 3.6 V, ILX = −100 mA 0.130 Ω RONN On Resistance of Nch Transistor A/PVIN = 3.6 V, ILX = −100 mA 0.125 Ω Maxduty Maximum Duty Cycle 100 % tstart1 Soft-start Time 1 A/PVIN = VCE = 3.6 V or VSET + 1 V, TSS = OPEN 75 150 300 µs tstart2 Soft-start Time 2 A/PVIN = VCE = 3.6 V or VSET + 1 V, CSS = 0.1 µF 15 30 45 ms ILXLIM LX Current Limit A/PVIN = VCE = 3.6 V or VSET + 1 V 2200 2800 mA tprot Protection Delay Time A/PVIN = VCE = 3.6 V or VSET + 1 V 0.5 1.5 5 ms VUVLO1 UVLO Detector Threshold A/PVIN = VCE 2.1 2.2 2.3 V VUVLO2 UVLO Released Voltage A/PVIN = VCE 2.2 2.3 2.4 V TTSD Thermal Shutdown Temperature Junction Temperature 165 °C TTSR Thermal Shutdown Released Temperature Junction Temperature 115 °C RPG On Resistance of PG Pin When Low Output A/PVIN = 3.6 V, VOUT = 0 V or VFB = 0 V 45 Ω All test items listed under Electrical Characteristics are done under the pulse load condition (Tj ≈ Ta = 25°C).

No. EC -296-210909 ELECTRICAL CHARACTERISTICS (continued) RP506Lxx1x-TR-A The specifications surrounded by are guaranteed by design engineering at −40°C ≤ Ta ≤ 105°C. RP506Lxx1G/H, RP506L001N (Oscillator Frequency: 2.3 MHz) Electrical Characteristics (Ta = 25°C) Symbol Item Conditions Min. Typ. Max. Unit VIN When MODE = H Operating Input Voltage(1) 1.1 V ≤ VSET < 1.2 V 2.5 4.5 V 1.2 V ≤ VSET 2.5 5.5 When MODE = L Operating Input Voltage(2) 0.8 V ≤ VSET < 1.0 V 2.5 4.5 1.0 V ≤ VSET 2.5 5.5 fosc Oscillator Frequency A/PVIN = VCE = 3.6 V or VSET + 1 V 2.00 2.3 2.50 MHz RP506Lxx1K/L, RP506L001M (Oscillator Frequency: 1.2 MHz) Electrical Characteristics VIN When MODE = H Operating Input Voltage 0.6 V ≤ VSET < 0.7 V 2.5 4.5 V 0.7 V ≤ VSET 2.5 5.5 When MODE = L Operating Input Voltage 0.6 V ≤ VSET 2.5 5.5 fosc Oscillator Frequency A/PVIN = VCE = 3.6 V or VSET + 1 V 1.00 1.20 1.40 MHz All test items listed under Electrical Characteristics are done under the pulse load condition (Tj ≈ Ta = 25°C). (1) As for RP506Lxx1G/H//N (MODE = H), VSET can be set from 1.1 V. (2) As for RP506Lxx1G/H//N (MODE = L), VSET can be set from 0.8 V.

No. EC-296-210909 ELECTRICAL CHARACTERISTICS (continued) RP506Lxx1x-TR-A The specifications surrounded by are guaranteed by design engineering at −40°C ≤ Ta ≤ 105°C. RP506Lxx1G/H/K/L (Fixed Output Voltage Type) Electrical Characteristics (Ta = 25°C) Symbol Item Conditions Min. Typ. Max. Unit VOUT Output Voltage A/PVIN = VCE = 3.6 V or VSET + 1 V VSET ≥ 1.2 V x0.985 x1.015 V x0.975 x1.025 VSET < 1.2 V −0.018 0.018 −0.03 0.03 IDD1 Supply Current 1 A/PVIN = VCE = 5.5 V, VOUT = VSET × 0.8 600 µA IDD2 Supply Current 2 A/PVIN = VCE = VOUT = 5.5 V VMODE = 0 V 48 72 µA VMODE = 5.5 V 600 µA IVOUTL VOUT “L” Current A/PVIN = 5.5 V, VCE = VOUT = 0 V −1 0 1 µA VOVD OVD Voltage A/PVIN = 3.6 V VSET × 1.2 V VUVD UVD Voltage A/PVIN = 3.6 V VSET × 0.8 V RP506Lxx1G/K (Fixed Output Voltage Type without Auto-discharge Function) IVOUTH VOUT “H” Current A/PVIN = VOUT = 5.5 V, VCE = 0 V −1 0 1 µA RP506Lxx1H/L (Fixed Output Voltage Type with Auto-discharge Function) RLOW On Resistance of Low Output A/PVIN = 3.6 V, VCE = 0 V 45 Ω RP506L001N/M (Adjustable Output Voltage Type) Electrical Characteristics VFB Feedback Voltage A/PVIN = VCE = 3.6 V 0.591 0.600 0.609 V 0.585 0.600 0.615 ∆VFB /∆Ta Feedback Voltage Temperature Coefficient −40°C ≤ Ta ≤ 105°C ±100 ppm /°C IDD1 Supply Current 1 A/PVIN = VCE = 5.5 V, VFB = 0.48 V 600 µA IDD2 Supply Current 2 A/PVIN = VCE = VFB = 5.5 V VMODE = 0 V 48 72 µA VMODE = 5.5 V 600 µA IVFBH VFB “H” Current A/PVIN = VFB = 5.5 V, VCE = 0 V −1 0 1 µA IVFBL VFB “L” Current A/PVIN = 5.5 V, VCE = VFB = 0 V −1 0 1 µA VOVD OVD Voltage A/PVIN = 3.6 V 0.72 V VUVD UVD Voltage A/PVIN = 3.6 V 0.48 V All test items listed under Electrical Characteristics are done under the pulse load condition (Tj ≈ Ta = 25°C) except Feedback Voltage Temperature Coefficient.

No. EC -296-210909 ELECTRICAL CHARACTERISTICS (continued) RP506Lxx1x-TR-A The specifications surrounded by are guaranteed by design engineering at −40°C ≤ Ta ≤ 105°C. Product Name VOUT [V] (Ta = 25°C) VOUT [V] (Ta = -40 ~ 105°C)

No. EC-296-210909 ELECTRICAL CHARACTERISTICS (continued) RP506Lxx1x-TR-K RP506Lxx1 Electrical Characteristics (–40°C ≤ Ta ≤ 125°C) Symbol Item Conditions Min. Typ. Max. Unit Istandby Standby Current A/PVIN = 5.5 V, VCE = 0 V 0 10 µA ICEH CE “H” Input Current A/PVIN = VCE = 5.5 V −1 0 1 µA ICEL CE “L” Input Current A/PVIN = 5.5 V, VCE = 0 V −1 0 1 µA IMODEH MODE “H” Input Current A/PVIN = VMODE = 5.5 V, VCE = 0 V −1 0 1 µA IMODEL MODE “L” Input Current A/PVIN = 5.5 V, VCE = VMODE = 0 V −1 0 1 µA ILXLEAKH LX Leakage Current “H” A/PVIN = VLX = 5.5 V, VCE = 0 V −1 0 6 µA ILXLEAKL LX Leakage Current “L” A/PVIN = 5.5 V, VCE = VLX = 0 V −40 0 1 µA VCEH CE “H” Input Voltage A/PVIN = 5.5 V 1.0 V VCEL CE “L” Input Voltage A/PVIN = 2.5 V 0.4 V VMODEH MODE “H” Input Voltage A/PVIN = 5.5 V 1.0 V VMODEL MODE “L” Input Voltage A/PVIN = 2.5 V 0.4 V RONP On Resistance of Pch Transistor A/PVIN = 3.6 V, ILX = −100 mA 0.130 Ω RONN On Resistance of Nch Transistor A/PVIN = 3.6 V, ILX = −100 mA 0.125 Ω Maxduty Maximum Duty Cycle 100 % tstart1 Soft-start Time 1 A/PVIN = VCE = 3.6 V or VSET + 1 V, TSS = OPEN 75 150 300 µs tstart2 Soft-start Time 2 A/PVIN = VCE = 3.6 V or VSET + 1 V, CSS = 0.1 µF 15 30 45 ms ILXLIM LX Current Limit A/PVIN = VCE = 3.6 V or VSET + 1 V 2000 2800 mA tprot Protection Delay Time A/PVIN = VCE = 3.6 V or VSET + 1 V 0.5 1.5 5 ms VUVLO1 UVLO Detector Threshold A/PVIN = VCE 2.1 2.2 2.3 V VUVLO2 UVLO Released Voltage A/PVIN = VCE 2.2 2.3 2.4 V TTSD Thermal Shutdown Temperature Junction Temperature 165 °C TTSR Thermal Shutdown Released Temperature Junction Temperature 115 °C RPG On Resistance of PG Pin When Low Output A/PVIN = 3.6 V, VOUT = 0 V or VFB = 0 V 45 Ω

No. EC -296-210909 ELECTRICAL CHARACTERISTICS (continued) RP506Lxx1x-TR-K RP506Lxx1G/H, RP506L001N (Oscillator Frequency: 2.3 MHz) Electrical Characteristics (– 40°C ≤ Ta ≤ 125°C) Symbol Item Conditions Min. Typ. Max. Unit VIN When MODE = H Operating Input Voltage(1) 1.1 V ≤ VSET < 1.2 V 2.5 4.5 V 1.2 V ≤ VSET 2.5 5.5 When MODE = L Operating Input Voltage(2) 0.8 V ≤ VSET < 1.0 V 2.5 4.5 1.0 V ≤ VSET 2.5 5.5 fosc Oscillator Frequency A/PVIN = VCE = 3.6 V or VSET + 1 V 2.00 2.3 2.50 MHz RP506Lxx1K/L, RP506L001M (Oscillator Frequency: 1.2 MHz) Electrical Characteristics VIN When MODE = H Operating Input Voltage 0.6 V ≤ VSET < 0.7 V 2.5 4.5 V 0.7 V ≤ VSET 2.5 5.5 When MODE = L Operating Input Voltage 0.6 V ≤ VSET 2.5 5.5 fosc Oscillator Frequency A/PVIN = VCE = 3.6 V or VSET + 1 V 1.00 1.20 1.40 MHz (1) As for RP506Lxx1G/H//N (MODE = H), VSET can be set from 1.1 V. (2) As for RP506Lxx1G/H//N (MODE = L), VSET can be set from 0.8 V.

No. EC-296-210909 ELECTRICAL CHARACTERISTICS (continued) RP506Lxx1x-TR-K RP506Lxx1G/H/K/L (Fixed Output Voltage Type) Electrical Characteristics (–40°C ≤ Ta ≤ 125°C) Symbol Item Conditions Min. Typ. Max. Unit VOUT Output Voltage A/PVIN = VCE = 3.6 V or VSET + 1 V VSET ≥ 1.2 V Ta = 25°C x0.985 x1.015 V –40°C ≤ Ta ≤ 125°C x0.975 x1.025 VSET < 1.2 V Ta = 25°C −0.018 0.018 IDD1 Supply Current 1 A/PVIN = VCE = 5.5 V, VOUT = VSET × 0.8 600 µA IDD2 Supply Current 2 A/PVIN = VCE = VOUT = 5.5 V VMODE = 0 V 48 72 µA VMODE = 5.5 V 600 µA IVOUTL VOUT “L” Current A/PVIN = 5.5 V, VCE = VOUT = 0 V −1 0 1 µA VOVD OVD Voltage A/PVIN = 3.6 V VSET × 1.2 V VUVD UVD Voltage A/PVIN = 3.6 V VSET × 0.8 V RP506Lxx1G/K (Fixed Output Voltage Type without Auto-discharge Function) IVOUTH VOUT “H” Current A/PVIN = VOUT = 5.5 V, VCE = 0 V −1 0 1 µA RP506Lxx1H/L (Fixed Output Voltage Type with Auto-discharge Function) RLOW On Resistance of Low Output A/PVIN = 3.6 V, VCE = 0 V 45 Ω RP506L001N/M (Adjustable Output Voltage Type) Electrical Characteristics VFB Feedback Voltage A/PVIN = VCE = 3.6 V Ta = 25°C 0.591 0.600 0.609 V –40°C ≤ Ta ≤ 125°C 0.585 0.615 IDD1 Supply Current 1 A/PVIN = VCE = 5.5 V, VFB = 0.48 V 600 µA IDD2 Supply Current 2 A/PVIN = VCE = VFB = 5.5 V VMODE = 0 V 48 72 µA VMODE = 5.5 V 600 µA IVFBH VFB “H” Current A/PVIN = VFB = 5.5 V, VCE = 0 V −1 0 1 µA IVFBL VFB “L” Current A/PVIN = 5.5 V, VCE = VFB = 0 V −1 0 1 µA VOVD OVD Voltage A/PVIN = 3.6 V 0.72 V VUVD UVD Voltage A/PVIN = 3.6 V 0.48 V

No. EC -296-210909 ELECTRICAL CHARACTERISTICS (continued) RP506Lxx1x-TR-K Product Name VOUT [V] (Ta = 25°C) VOUT [V] (Ta = -40 ~ 125°C)

No. EC-296-210909 THEORY OF OPERATION Soft-start Time Adjustment Function Soft-start time (tstart) of the RP506L is adjustable by connecting a soft-start time adjustment capacitor (C SS) is connected, tstart will be 30 ms. The TSS pin must be open if the soft-start time function is not used. tstart is set to 0.15 ms (Typ.) when the TSS pin is open. tstart 30ms 15ms 3ms 0.15ms 0 470pF 0.01μF 0.047μF 0.1μF CSS CSS vs. tstart (Typ.) Soft-start Time (tstart) vs. Soft-start Time Adjustment Capacitor (CSS) Power Good Function The RP506L contains a power good function using Nch open drain. If any abnormal condition is detected, the power good function turns Nch transistor on and switches the PG pin to low. If the cause of the abnormal condition is removed, the power good function turns Nch transistor off and switches the PG pin back to high. After the recovery from abnormal condition, it takes typically 0.05 ms for the IC to turns Nch transistor off. The followings are the abnormal conditions that the power good function can detect.

• CE = ”L” (Shut down)
• UVLO (Shut down)
• Thermal Shutdown
• O ver Voltage Detection: Typ. V SET x 1.2 V (RP506Lxx1G/H/K/L) or 0.72 V (RP506L001N/M)
• Under Voltage Detection: Typ. VSET x 0.8 V (RP506Lxx1G/H/K/L) or 0.48 V (RP506L001N/M)
• Latch Type Protection Notes: When using the power good function, the resistance of PG pin (R PG) should be between 10 kΩ to 100 kΩ. The PG pin must be open or connected to GND if the power good function is not used.

No. EC -296-210909 Sequential Start-up Using Soft-start Time Adjustment and Power Good Functions Sequential startup circuits can be built by using soft -start time adjustment and power good functions of the RP506L. The figure below is an example of sequential startup circuits using DC/DC1 and DC/DC2. The DC/DC1 starts up first followed by the DC/DC2: the output of DC/DC1 reaches 1.44 V (VSET x 0.8), the PG pin of DC/DC1 sends a high signal to the CE pin of DC/DC2, and then the DC/DC2 starts soft -start. DC/DC1 (RP506L001N/M): VIN = 5.0 V, VOUT = 1.8 V, tstart = 30 ms, CSS = 0.1 µF DC/DC2 (RP506L001N/M): VIN = 5.0 V, VOUT = 1.2 V, tstart = 30 ms, CSS = 0.1 µF PVIN PG PGND Lx VFB AGND VIN = 5.0 V COUT1 30 µF VOUT1 1.8 V 2.2 µH RP506L001N/M AVIN CE TSS MODE RPG1 100 kΩ CIN1 10 µF 440 kΩ 22 pF PVIN PG PGND Lx VFB AGND COUT2 30 µF VOUT2 1.2 V 2.2 µH RP506L001N/M AVIN CE TSS MODE CIN2 10 µF 22 pF DCDC1 DCDC2 220 kΩ 220 kΩ 220 kΩ CSS1 0.1 µF CSS2 0.1 µF Circuits Example using Sequential Startup

No. EC-296-210909 Operation of Step-down DC/DC Converter and Output Current The step-down DC/DC converter charges energy in the inductor when L X Tr. turns “ON”, and discharges the energy from the inductor when L X Tr. turns “OFF” and controls with less energy loss, so that a lower output voltage (VOUT) than the input voltage (VIN) can be obtained. The operation of the step-down DC/DC converter is explained in the following figures. Pch Tr L Nch Tr VIN VOUT CL GND T＝1/fosc ton toff topen ILmin ILmax IL i1 i2 Basic Circuit Inductor Current (IL) flowing through Inductor (L) Step1. Pch Tr. turns “ON” and IL (i1) flows, L is charged with energy. At this moment, i1 increases from the minimum inductor current (ILmin), which is 0 A, and reaches the maximum inductor current (ILmax) in proportion to the on-time period (ton) of Pch Tr. Step2. When Pch Tr. turns “OFF”, L tries to maintain IL at ILmax, so L turns Nch Tr. “ON” and IL (i2) flows into L. Step3. i2 decreases gradually and reaches ILmin after the open-time period (topen) of Nch Tr., and then Nch Tr. turns “OFF”. This is called discontinuous current mode. As the output current (IOUT) increases, the off-time period (toff) of Pch Tr. runs out before IL reaches ILmin. The next cycle starts, and Pch Tr. turns “ ON” and Nch Tr. turns “OFF”, which means IL starts increasing from ILmin. This is called continuous current mode. In the case of PWM mode, VOUT is maintained by controlling ton. During PWM mode, the oscillator frequency (fosc) is being maintained constant. When the step-down DC/DC operation is constant, ILmin and ILmax during ton of Pch Tr. would be same as during toff of Pch Tr. The current differential between ILmax and ILmin is described as ∆I. However, T = 1 / fosc = ton + toff duty (%) = ton / T × 100 = ton × fosc × 100 topen ≤ toff In Equation 1, “VOUT × topen / L” shows the amount of current change in " OFF " state. Also, “(VIN − VOUT) × ton / L” shows the amount of current change at "ON" state.

No. EC -296-210909 Discontinuous Mode and Continuous Mode As illustrated in Figure A, when IOUT is relatively small, t open < toff. In this case, the energy charged into L during ton will be completely discharged during toff, as a result, ILmin = 0. This is called discontinuous mode. When IOUT is gradually increased, eventually topen = toff and when IOUT is increased further, eventually ILmin > 0, as illustrated in Figure B. This is called continuous mode. ILmax ILmin ton toff T=1/fosc topen IL t ILmax ILmin ton toff T=1/fosc IL Iconst t Figure A. Discontinuous Mode Figure B. Continuous Mode In the continuous mode, the solution of Equation 1 is described as tonc. tonc = T × V When ton < tonc, it is discontinuous mode, and when ton = tonc, it is continuous mode.

No. EC-296-210909 Forced PWM Mode By setting the MODE pin to “H”, the IC switches the frequency at the fixed rate to reduce noise even when the output load is light. Therefore, when IOUT is ∆IL/2 or less, ILmin becomes less than 0. That is, the accumulated electricity in CL is discharged through the IC side while IL is increasing from ILmin to 0 during ton, and also while IL is decreasing from 0 to ILmin during toff. ILmax ILmin ton toff T=1/fosc IL IOUT t ΔIL Forced PWM Mode VFM Mode By setting the MODE pin to “L”, in low output current, the IC automatically switches into VFM mode in order to achieve high efficiency. In VFM mode, ton is forced to end when the inductor current reaches the pre- set ILmax. In the VFM mode, ILmax is typically set to 400 mA for the RP506Lxx1G/H//N, and 550 mA for the RP506Lxx1K/L/M. When ton reaches 1.5 times of T = 1 / fosc, ton will be forced to end even if the inductor current is not reached ILmax. ILmax ILmin ton toff IL t VFM Mode

No. EC -296-210909 Output Current and Selection of External Components The following equations explain the relationship between output current and peripheral components that are listed in Table1. Recommended External Components in Typical Application. Ripple Current P-P value is described as IRP, ON resistance of Pch Tr. is described as RONP, ON resistance of Nch Tr. is described as RONN, and DC resistor of the inductor is described as RL. First, when Pch Tr. is “ON”, the following equation is satisfied. Second, when Pch Tr. is "OFF" (Nch Tr. is "ON"), the following equation is satisfied. Put Equation 4 into Equation 3 to solve ON duty of Pch Tr. (DON = ton / (toff + ton)): D Ripple Current is described as follows: Peak current that flows through L, and L X Tr. is described as follows: Notes: Please consider ILxmax when setting conditions of input and output, as well as selecting the external components. The above calculation formulas are based on the ideal operation of the ICs in continuous mode.

No. EC-296-210909 Timing Chart (1) Soft-start Time Starting-up with CE Pin The IC starts to operate when the CE pin voltage (VCE) exceeds the threshold voltage. The threshold voltage is preset between CE “H” input voltage (VCEH) and CE “L” input voltage (VCEL). After the start-of the start-up of the IC, soft -start circuit starts to operate. Then, after a certain period of time, the reference voltage (VREF) in the IC gradually increases up to the specified value. VCEH Soft-start Time IC Internal Reference Voltage VCEL Threshold Level Lx Voltage (VCE) (VREF) Soft-start Circuit operation starts. (VLX) Depending on Power Supply, Load Current, External Components (VOUT) Output Voltage CE Pin Input Voltage IC operates with PWM mode during Soft-start time. Timing Chart Soft-start time starts when soft -start circuit is activated, and ends when the reference voltage reaches the specified voltage. Notes: Soft start time is not always equal to the turn-on speed of the step-down DC/DC converter. Please note that the turn-on speed could be affected by the power supply capacity, the output current, the inductance value and the COUT value.

No. EC -296-210909 Starting-up with Power Supply After the power-on, when VIN exceeds the UVLO released voltage (VUVLO2), the IC starts to operate. Then, soft- start circuit starts to operate and after a certain period of time, V REF gradually increases up to the specified value. Soft -start time starts when soft -start circuit is activated, and ends when V REF reaches the specified voltage. Output Voltage (VOUT) Input Voltage (VIN) VUVLO2 IC Internal Reference Voltage (VREF) VUVLO1 Lx Voltage (VLX) VSET VSET Depending on Power Supply, Load Current, External Components Soft-start Time IC operates with PWM mode during Soft-start time. Timing Chart Notes: Please note that the turn-on speed of VOUT could be affected by the power supply capacity, the output current, the inductance value, the COUT value and the turn-on speed of VIN determined by CIN.

No. EC-296-210909 (2) Under Voltage Lockout (UVLO) Circuit If VIN becomes lower than V SET, the step-down DC/DC converter stops the switching operation and ON duty becomes 100%, and then VOUT gradually drops according to VIN. If the VIN drops more and becomes lower than the UVLO detector threshold (V UVLO1), the UVLO circuit starts to operate, VREF stops, and Pch and Nch built-in switch transistors turn “OFF”. As a result, VOUT drops according to the COUT capacitance value and the load. To restart the operation, V IN needs to be higher than V UVLO2. The timing chart below shows the voltage shifts of VREF, VLX and VOUT when VIN value is varied. Output Voltage (VOUT) Input Voltage (VIN) VUVLO2 IC Internal Reference Voltage (VREF) VUVLO1 Lx Voltage (VLX) VSET Depending on Power Supply, Load Current, External Components Soft-start Time Timing Chart Notes: Falling edge (operating) and rising edge (releasing) waveforms of V OUT could be affected by the initial voltage of COUT and the output current of VOUT.

No. EC -296-210909 (3) Over Current Protection Circuit, Latch Type Protection Circuit Over current protection circuit supervises the inductor peak current (the peak current flowing through Pch Tr.) in each switching cycle, and if the current exceeds the L X current limit (ILXLIM), it turns off Pch Tr. I LXLIM of the RP506L is set to Typ.2800 mA. Latch type protection circuit latches the built-in driver to the OFF state and stops the operation of the step- down DC/DC converter if the over current status continues or V OUT continues being the half of the setting voltage for equal or longer than protection delay time (tprot). To release the latch type protection circuit, restart the IC by inputting "L" signal to the CE pin, or restart the IC with power-on or make the supply voltage lower than VUVLO1. Notes: I LXLIM and tprot could be easily affected by self -heating or ambient environment. If the V IN drops dramatically or becomes unstable due to short-circuit, protection operation and tprot could be affected. Protection Delay Time (tprot) Lx Limit Current (ILXLIM) IL flowing through L Current flowing through Pch Tr. Lx Voltage (VLX) Protection Delay Time

No. EC-296-210909 The timing chart below shows the voltage shift of V CE, VLX and VOUT when the IC status is changed by the following orders: VIN rising → stable operation → high load → CE reset → stable operation → VIN falling → VIN recovering (UVLO reset) → stable operation. (1)(2) If the large current flows through the circuit or the IC goes into low VOUT condition due to short-circuit or other reasons, the latch type protection circuit latches the built -in driver to “OFF” state after tprot. Then, VLX becomes "L" and VOUT turns “OFF”. (3) The latch type protection circuit is released by CE reset, which puts the IC into "L" once with the CE pin and back into "H". (4) The latch type protection circuit is released by UVLO reset, which makes VIN lower than VUVLO1. Input Voltage (VIN) VSET UVLO Detector Threshold (VUVLO1) CE Pin Input Voltage (VCE) VSET Threshold Level Lx Voltage (VLX) VSET Output Voltage (VOUT) UVLO Released Voltage (VUVLO2) (1) (2) Soft-start Time VSET Soft-start Time Soft-start Time Stable Operation Stable Operation Stable Operation Protection Delay Time Protection Delay Time UVLO Reset CE Reset Latch-type Protection Latch-type Protection (3) (4) Timing Chart

No. EC -296-210909

APPLICATION INFORMATION

PG function is used, 30 ms Soft-start Time (1)MODE = “H”: forced PWM control, MODE = “L”: PWM/VFM auto switching control PVIN PG PGND Lx VOUT AGND VIN COUT 30uF VOUT L 2.2uH RP506L CE TSS MODE*1 RPG 100kΩ CIN 10uF PG AVIN CSS 0.1uF RP506Lxx1G/H/K/L (Fixed Output Voltage Type) PG function is not used, 150 µs Soft-start Time (1)MODE = “H”: forced PWM control, MODE = “L”: PWM/VFM auto switching control PVIN PG PGND Lx VFB AGND VIN COUT 30uF VOUT L 2.2uH RP506L AVIN CE TSS MODE*1 CIN 10uF RP506L001N/M (Adjustable Output Voltage Type) (1) VSET > 3.3 V is only for RP506L001N/M.

Table 1. Recommended External Components (1) VSET > 3.3 V is only for RP506L001N/M.

No. EC -296-210909 TECHNICAL NOTES The performance of a power source circuit using this device is highly dependent on a peripheral circuit. A peripheral component or the device mounted on PCB should not exceed a rated voltage, a rated current or a rated power. When designing a peripheral circuit, please be fully aware of the following points.  AGND and PGND must be wired to the GND plane when mounting on boards.  AVIN and PVIN must be wired to the VIN plane when mounting on boards.  Ensure the A/PVIN and A/PGND lines are s ufficiently robust. A large switching current flow s through the A/ PGND line, the VDD line, the VOUT line, an inductor, and LX. If their impedance is too high, noise pickup or unstable operation may result. Set the external components as close as possible to the IC and minimize the wiring between the components and the IC. Especially, place a capacitor (C IN) as close as possible to the PVIN pin and PGND. For the RP506Lxx1G/H/K/L, separate the wiring between the VOUT pin and an inductor (L1) from the wiring between L1 and Load. Likewise, for the RP506L001N/M, separate the wiring between a resistor for setting output voltage (R1) and an inductor (L2) f rom the wiring between L2 and Load.  Choose a low ESR ceramic capacitor . The ceramic capacitance of C IN should be more than or equal to 10 µF. For a ceramic capacitor (COUT), it is recommended that three paralleled 10 µF ceramic capacitors or two paralleled 22 µF ceramic capacitors be used.  When VSET ≤ 3.3 V, a 2.2 μH inductor is recommended for RP506Lxx1G/H//N/K/L/M. When VSET ≤ 2.3 V, a 1.5 μH inductor can be used for RP506Lxx1G/H//N. When VSET ≤ 1.5 V, a 1 μH inductor can be used for RP506Lxx1G/H//N. When VSET > 3.3 V, a 4.7 μH inductor is recommended for RP506L001N/M. The phase compensation of this IC is designed according to the C OUT and L values. Choose an inductor that has small DC resistance, has enough allowable current and is hard to caus e magnetic saturation. If the inductance value of an inductor is extremely small, the peak current of L X may increase along with the load current. As a result, over current protection circuit may start to operate when the peak current of L X reaches to “LX limit current”. Set Output Voltage (VSET) Range vs. Inductance Range Version RP506Lxx1G/H RP506Lxx1K/L VSET (V) L = 1.0 μH L = 1.5 μH L = 2.2 μH L = 2.2 μH up to 1.5 Acceptable Acceptable Recommended Recommended 1.6 to 2.3 - Acceptable Recommended Recommended 2.4 to 3.3 - - Recommended Recommended Version RP506L001N RP506L001M up to 1.5 Acceptable Acceptable Recommended - Recommended - 1.6 to 2.3 - Acceptable Recommended - Recommended - 2.4 to 3.3 - - Recommended - Recommended - 3.4 or more - - - Recommended - Recommended

No. EC-296-210909  Overcurrent protection circuit and latch type protection circuit may be affected by self -heating or power dissipation environment.  The output voltage (VOUT) is adjustable by changing the resistance values of resistors (R1, R2) as follows. VOUT = VFB × (R1 + R2) / R2 Recommended VOUT range for RP506L001M: 0.6 V ≤ VSET ≤ 4.0 V, Recommended VOUT range for RP506L001N: 0.8 V ≤ VSET ≤ 4.0 V If R1 and R2 are too large, the impedances of VFB also become large, as a result, the IC could be easily affected by noise. For this reason, R2 should be 220 kΩ or less. If the operation becomes unstable due to the high impedances, the impedances should be decreased. C1 can be calculated by the following equations. Please use the value close to the calculation result. If the output voltage is lower than or equal to 3.3 V: If the output voltage exceeds 3.3 V: C1 = 1.50 × 10 -6 / R2 [F] The recommended resistance values for R1 and C1 when R2 = 220 kΩ or 100 kΩ are as follows. Set Output Voltage (VSET) vs. Resistors (R1, R2) and Capacitor (C1) R1 [kΩ] 0 36.7 73.3 220 440 697 990 533 567 R2 [kΩ] 220 220 220 220 220 220 220 100 100 C1 [pF] - 22 22 22 22 22 22 15 15  Soft-start Time (tstart) is adjustable by connecting a capacitor (CSS) between the TSS pin and GND. The capacitance value for CSS that is suitable for tstart can be calculated by the following equation. CSS (nF) = 3.5 × tstart (ms) The TSS pin must be open if Soft-start time function is not used. Soft-start time is set to typically 150 µs when the TSS pin is open.  When using the power good function, the resistance value of a resistor (R PG) should be between 10 k Ω to 100 kΩ. The PG pin must be open or connected to GND if the power good function is not used.

No. EC -296-210909 PCB Layout RP506Lxx1G/H/K/L (PKG: DFN3030-12 pin) PCB Layout Topside Backside RP506L001N/M (PKG: DFN3030-12 pin) PCB Layout Topside Backside R11 and R12 are arranged as a substitute for R1 so that two resistors can be connected in series.

No. EC-296-210909 TYPICAL CHARACTERISTICS Note: Typical Characteristics are intended to be used as reference data; they are not guaranteed. 1) Output Voltage vs. Output Current RP506Lxx1G/H/N VOUT = 1.2 V RP506Lxx1G/ H/N VOUT = 1.2 V MODE = “L”PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control RP506Lxx1G/H/N VOUT = 1.5 V RP506Lxx1G/ H/N VOUT = 1.5 V MODE = “L” PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control RP506Lxx1G/H/N VOUT = 1.8 V RP506Lxx1G/H/N VOUT = 1.8 V MODE = “L”PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control 1.180 1.185 1.190 1.195 1.200 1.205 1.210 1.215 1.220 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=3.6V Vin=5.0V 1.180 1.185 1.190 1.195 1.200 1.205 1.210 1.215 1.220 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=3.6V Vin=5.0V 1.475 1.480 1.485 1.490 1.495 1.500 1.505 1.510 1.515 1.520 1.525 0.01 0.1 1 10 100 1000 10000 Output Voltage VOUT [V] Output Current IOUT(mA) Vin= 5 V Vin= 3.3 V 1.475 1.480 1.485 1.490 1.495 1.500 1.505 1.510 1.515 1.520 1.525 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Output Voltage VOUT [V] Output Current IOUT(mA) Vin= 5 V Vin= 3.3 V 1.780 1.785 1.790 1.795 1.800 1.805 1.810 1.815 1.820 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=3.6V Vin=5.0V 1.780 1.785 1.790 1.795 1.800 1.805 1.810 1.815 1.820 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=3.6V Vin=5.0V

No. EC -296-210909 RP506Lxx1G/H/N VOUT = 3.3 V RP506Lxx1G/ H/N VOUT = 3.3 V MODE = “L”PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control RP506Lxx1K/L/M VOUT = 0.6 V RP506Lxx1K/L/M VOUT = 0.6 V MODE = “L”PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control RP506Lxx1K/ L/M VOUT = 0.8 V RP506Lxx1K/L/M VOUT = 0.8 V MODE = “L” PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control 3.260 3.270 3.280 3.290 3.300 3.310 3.320 3.330 3.340 3.350 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=4.3V Vin=5.0V 3.260 3.270 3.280 3.290 3.300 3.310 3.320 3.330 3.340 3.350 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=4.3V Vin=5.0V 0.580 0.585 0.590 0.595 0.600 0.605 0.610 0.615 0.620 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=3.6V Vin=4.5V 0.580 0.585 0.590 0.595 0.600 0.605 0.610 0.615 0.620 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=3.6V Vin=4.5V 0.780 0.785 0.790 0.795 0.800 0.805 0.810 0.815 0.820 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=3.6V Vin=5.0V 0.780 0.785 0.790 0.795 0.800 0.805 0.810 0.815 0.820 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=3.6V Vin=5.0V

No. EC-296-210909 RP506Lxx1K/ L/M VOUT = 1.2 V RP506Lxx1K/L/M VOUT = 1.2 V MODE = “L” PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control RP506Lxx1K/ L/M VOUT = 1.8 V RP506Lxx1K/L/M VOUT = 1.8 V MODE = “L” PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control RP506Lxx1K/ L/M VOUT = 3.3 V RP506Lxx1K/L/M VOUT = 3.3 V MODE = “L” PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control 1.180 1.185 1.190 1.195 1.200 1.205 1.210 1.215 1.220 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=3.6V Vin=5.0V 1.180 1.185 1.190 1.195 1.200 1.205 1.210 1.215 1.220 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Output Current IOUT(m A) Output Voltage V OUT (V) Vin=3.6V Vin=5.0V 1.780 1.785 1.790 1.795 1.800 1.805 1.810 1.815 820 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Output Voltage V OUT(V) Vin=3.6V Vin=5.0V 1.780 1.785 1.790 1.795 1.800 1.805 1.810 1.815 820 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Output Current IOUT(m A) Output Voltage V OUT(V) Vin=3.6V Vin=5.0V 3.260 3.270 3.280 3.290 3.300 3.310 3.320 3.330 340 3.350 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Output Voltage V OUT(V) Vin=4.3V Vin=5.0V 3.260 3.270 3.280 3.290 3.300 3.310 3.320 3.330 340 3.350 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Output Current IOUT(m A) Output Voltage V OUT(V) Vin=4.3V Vin=5.0V

No. EC -296-210909 2) Output Voltage vs. Input Voltage RP506Lxx1K/L/M VOUT = 0.6 V RP506Lxx1K/ L/M VOUT = 0.8 V MODE = “H” Forced PWM Control MODE = “H” Forced PWM Control RP506L VOUT = 1.2 V RP506L VOUT = 1.8 V MODE = “H” Forced PWM Control MODE = “H” Forced PWM Control RP506L VOUT = 3.3 V MODE = “H” Forced PWM Control 0.780 0.785 0.790 0.795 0.800 0.805 0.810 0.815 0.820 2.5 3 3.5 4 4.5 5 5.5 Input Voltage VIN(V) Output Voltage V OUT(V) Iout=1mA Iout=1000mA Iout=2000mA 0.580 0.585 0.590 0.595 0.600 0.605 0.610 0.615 0.620 2.5 3 3.5 4 4.5 5 5.5 Input Voltage VIN(V) Output Voltage V OUT(V) Iout=1mA Iout=1000mA Iout=2000mA 1.180 1.185 1.190 1.195 1.200 1.205 1.210 1.215 1.220 2.5 3 3.5 4 4.5 5 5.5 Input Voltage VIN(V) Output Voltage V OUT(V) Iout=1mA Iout=1000mA Iout=2000mA 1.780 1.785 1.790 1.795 1.800 1.805 1.810 1.815 1.820 2.5 3 3.5 4 4.5 5 5.5 Input Voltage VIN(V) Output Voltage V OUT(V) Iout=1mA Iout=1000mA Iout=2000mA 3.260 3.270 3.280 3.290 3.300 3.310 3.320 3.330 3.340 3.350 3.8 4.3 4.8 5.3 Input Voltage VIN(V) Output Voltage V OUT (V) Iout=1mA Iout=1000mA Iout=2000mA

No. EC-296-210909 3) Output Voltage vs. Ambient Temperature 4) Feedback Voltage vs. Ambient Temperature RP506L181G/H/K/L VOUT = 1.8 V RP506L001N/M 5) Efficiency vs. Output Current RP506Lxx1G/ H/N VOUT = 1.2 V RP506Lxx1G/ H/N VOUT = 1.5 V RP506Lxx1G/H/N VOUT = 1.8 V RP506Lxx1G/ H/N VOUT = 3.3 V 100 0.01 0.1 1 10 100 1000 10000 Efficiency (%) Output Current IOUT(mA) VIN=5.0V, VMODE=0V VIN=3.6V, VMODE=0V VIN=VMODE=5.0V VIN=VMODE=3.6V 100 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Efficiency (%) VIN=5.0V, VMODE=0V VIN=4.3V, VMODE=0V VIN=VMODE=5.0V VIN=VMODE=4.3V VIN=3.3V, VMODE=0V VIN=5V, VMODE=0V VIN=VMODE=3.3V VIN=VMODE=5.0V

No. EC -296-210909 RP506Lxx1K/L/M VOUT = 0.6 V RP506Lxx1K/L/M VOUT = 0.8 V RP506Lxx1K/L/M VOUT = 1.2 V RP506Lxx1K/L/M VOUT = 1.8 V RP506Lxx1K/L/M VOUT = 3.3 V 100 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Efficiency (%) VIN=5.0V, VMODE=0V VIN=3.6V, VMODE=0V VIN=VMODE=3.6V VIN=VMODE=5.0V 100 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Efficiency (%) VIN=4.5V, VMODE=0V VIN=3.6V, VMODE=0V VIN=VMODE=4.5V VIN=VMODE=3.6V 100 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Efficiency (%) VIN=5.0V, VMODE=0V VIN=3.6V, VMODE=0V VIN=VMODE=5.0V VIN=VMODE=3.6V 100 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Efficiency (%) VIN=5.0V, VMODE=0V VIN=3.6V, VMODE=0V VIN=VMODE=5.0V VIN=VMODE=3.6V 100 0.01 0.1 1 10 100 1000 10000 Output Current IOUT(m A) Efficiency (%) VIN=5.0V, VMODE=0V VIN=4.3V, VMODE=0V VIN=VMODE=5.0V VIN=VMODE=4.3V

No. EC-296-210909 6) Supply Current vs. Ambient Temperature 7 ) Supply Current vs. Input Voltage RP506L VOUT = 1.8 V (VIN = 5.5 V) RP506L VOUT = 1.8 V MODE = “L” PWM/VFM Auto Switching Control MODE = “L”PWM/VFM Auto Switching Control 8) Output Voltage Waveform RP506Lxx1G/H/N VOUT = 0.8 V (VIN = 3.6 V) MODE = “L”PWM/VFM Auto Switching Control RP506Lxx1G/H/N VOUT = 1.2 V (VIN = 3.6 V) RP506Lxx1G/ H/N VOUT = 1.2 V (VIN = 3.6 V) MODE = “L” PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control -0.03 -0.02 -0.01 0.00 0.01 0.02 -50 -40 -30 -20 -10 0 10 20 30 40 50 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 500 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.03 -0.02 -0.01 0.00 0.01 0.02 -5 -4 -3 -2 -1 0 1 2 3 4 5 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.03 -0.02 -0.01 0.00 0.01 0.02 -50 -40 -30 -20 -10 0 10 20 30 40 50 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 500 Inductor Current IL (mA) Output Voltage IL IOUT=10mA

No. EC -296-210909 RP506Lxx1G/ H/N VOUT = 1.8 V (VIN = 3.6 V) RP506Lxx1G/ H/N VOUT = 1.8 V (VIN = 3.6 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control RP506Lxx1G/ H/N VOUT = 3.3 V (VIN = 5.0 V) RP506Lxx1G/H/N VOUT = 1.8 V (VIN = 5.0 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control R P506Lxx1K/L/M VOUT = 0.6 V (VIN = 3.6 V) RP506Lxx1K/L/M VOUT = 0.6 V (VIN = 3.6 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control -0.03 -0.02 -0.01 0.00 0.01 0.02 -5 -4 -3 -2 -1 0 1 2 3 4 5 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.03 -0.02 -0.01 0.00 0.01 0.02 -50 -40 -30 -20 -10 0 10 20 30 40 50 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 500 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.03 -0.02 -0.01 0.00 0.01 0.02 -5 -4 -3 -2 -1 0 1 2 3 4 5 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.03 -0.02 -0.01 0.00 0.01 0.02 -50 -40 -30 -20 -10 0 10 20 30 40 50 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 500 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.03 -0.02 -0.01 0.00 0.01 0.02 -5 -4 -3 -2 -1 0 1 2 3 4 5 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.06 -0.04 -0.02 0.00 0.02 -250 -150 -50 50 150 250 Time t (μs) Output Ripple Voltage(AC) Vripple (V) 200 400 600 800 Inductor Current IL (mA) Output Voltage IL IOUT=10mA

No. EC-296-210909 RP506Lxx1K/L/M VOUT = 0.8 V (VIN = 3.6 V) RP506Lxx1K/L/M VOUT = 0.8 V (VIN = 3.6 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control RP506Lxx1K/L/M VOUT = 1.2 V (VIN = 3.6 V) RP506Lxx1K/L/M VOUT = 1.2 V (VIN = 3.6 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control RP506Lxx1K/L/M VOUT = 1.8 V (VIN = 3.6 V) RP506Lxx1K/L/M VOUT = 1.8 V (VIN = 3.6 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control -0.03 -0.02 -0.01 0.00 0.01 0.02 -5 -4 -3 -2 -1 0 1 2 3 4 5 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.06 -0.04 -0.02 0.00 0.02 -250 -200 -150 -100 -50 0 50 100 150 200 250 Time t (μs) Output Ripple Voltage(AC) Vripple (V) 200 400 600 800 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.03 -0.02 -0.01 0.00 0.01 0.02 -5 -4 -3 -2 -1 0 1 2 3 4 5 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.06 -0.04 -0.02 0.00 0.02 -250 -200 -150 -100 -50 0 50 100 150 200 250 Time t (μs) Output Ripple Voltage(AC) Vripple (V) 200 400 600 800 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.03 -0.02 -0.01 0.00 0.01 0.02 -5 -4 -3 -2 -1 0 1 2 3 4 5 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.06 -0.04 -0.02 0.00 0.02 -250 -200 -150 -100 -50 0 50 100 150 200 250 Time t (μs) Output Ripple Voltage(AC) Vripple (V) 200 400 600 800 Inductor Current IL (mA) Output Voltage IL IOUT=10mA

No. EC -296-210909 RP506Lxx1K/L/M VOUT = 3.3 V (VIN = 5.0 V) RP506Lxx1K/L/M VOUT = 3.3 V (VIN = 5.0 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “H” Forced PWM Control 9) Oscillator Frequency vs. Ambient Temperature RP506Lxx1G/H/N RP506Lxx1K/L/M 10) Oscillator Frequency vs. Input Voltage RP506Lxx1G/H/N RP506Lxx1K/L/M -0.03 -0.02 -0.01 0.00 0.01 0.02 -5 -4 -3 -2 -1 0 1 2 3 4 5 Time t (μs) Output Ripple Voltage(AC) Vripple (V) -100 100 200 300 400 Inductor Current IL (mA) Output Voltage IL IOUT=10mA -0.03 -0.02 -0.01 0.00 0.01 0.02 -250 -200 -150 -100 -50 0 50 100 150 200 250 Time t (μs) Output Ripple Voltage(AC) Vripple (V) 200 400 600 800 Inductor Current IL (mA) Output Voltage IL IOUT=10mA

No. EC-296-210909 11) Soft-start Time vs. Ambient Temperature 12) UVLO Detector Threshold/ Released Voltage vs. Ambient Temperature UVLO Detector Threshold UVLO Released Voltage 13) CE Input Voltage vs. Ambient Temperature CE“H” Input Voltage (VIN = 5.5 V) CE “L” Input Voltage (VIN = 2.5 V)

No. EC -296-210909 14) Lx Limit Current vs. Ambient Temperature 15) Nch Tr. On Resistance vs. Ambient Temperature 16) Pch Tr. On Resistance vs. Ambient Temperature 16) PG Detector Threshold vs. Ambient Temperature Over voltage Detection VOVD Undervoltage Detection VUVD

No. EC-296-210909 18) Soft-start Waveform RP506L VOUT = 1.8 V, TSS = Open RP506L V OUT = 1.8 V, TSS = 0.1 μF 19) Load Transient Response RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 0.8 V) RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 0.8 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “L”PWM/VFM Auto Switching Control RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 0.8 V) RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 0.8 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “L”PWM/VFM Auto Switching Control -50 0 50 100 150 200 250 300 350 400 450 Time t (us) CE Input Voltage (V) Output Voltage (V) PG Voltage (V) -5 0 5 10 15 20 25 30 35 40 45 Time t (ms) CE Input Voltage (V) Output Voltage (V) PG Voltage (V) CE Input Voltage CE Input Voltage PG Voltage PG Voltage Output Voltage Output Voltage 0.70 0.75 0.80 0.85 0.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 0.70 0.75 0.80 0.85 0.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Voltage Output Current 200mA-->1000mA Output Current 1000mA-->200mA Output Voltage 0.70 0.75 0.80 0.85 0.90 0.95 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 1000mA-->2000mA 0.70 0.75 0.80 0.85 0.90 0.95 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 2000mA-->1000mA Output Voltage Output Voltage

No. EC -296-210909 RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.2 V) RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.2 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “L”PWM/VFM Auto Switching Control RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.2 V) RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.2 V) MODE = “H” Forced PWM Control MODE = “H” Forced PWM Control RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.2 V) RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.2 V) 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Current 200mA-->1000mA Output Current 1000mA-->200mA Output Voltage Output Voltage 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Voltage Output Voltage Output Current 200mA-->1000mA Output Current 1000mA-->200mA 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 1000mA-->2000mA 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 2000mA-->1000mA Output Voltage Output Voltage

No. EC-296-210909 RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.8 V) RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.8 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “L”PWM/VFM Auto Switching Control RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.8 V) RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.8 V) MODE = “H” Forced PWM Control MODE = “H” Forced PWM Control RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.8 V) RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.8 V) 1.60 1.70 1.80 1.90 2.00 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 1.60 1.70 1.80 1.90 2.00 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Current 200mA-->1000mA Output Current 1000mA-->200mA Output Voltage Output Voltage 1.60 1.70 1.80 1.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 1.60 1.70 1.80 1.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Voltage Output Voltage Output Current 200mA-->1000mA Output Current 1000mA-->200mA 1.60 1.70 1.80 1.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 1000mA-->2000mA 1.60 1.70 1.80 1.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 2000mA-->1000mA Output Voltage Output Voltage

No. EC -296-210909 RP506Lxx1G/H/N (VIN = 5.0 V, VOUT = 3.3 V) RP506Lxx1G/H/N (VIN = 5.0 V, VOUT = 3.3 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “L”PWM/VFM Auto Switching Control RP506Lxx1G/H/N (VIN = 5.0 V, VOUT = 3.3 V) RP506Lxx1G/H/N (VIN = 5.0 V, VOUT = 3.3 V) MODE = “H” Forced PWM Control MODE = “H” Forced PWM Control RP506Lxx1G/H/N (VIN = 5.0 V, VOUT = 3.3 V) RP506Lxx1G/H/N (VIN = 5.0 V, VOUT = 3.3 V) 3.10 3.20 3.30 3.40 3.50 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 3.10 3.20 3.30 3.40 3.50 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Current 200mA-->1000mA Output Current 1000mA-->200mA Output Voltage Output Voltage 3.10 3.20 3.30 3.40 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 3.10 3.20 3.30 3.40 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Voltage Output Voltage Output Current 200mA-->1000mA Output Current 1000mA-->200mA 3.10 3.20 3.30 3.40 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) 3.10 3.20 3.30 3.40 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 2000mA-->1000mA Output Voltage Output Voltage

No. EC-296-210909 RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.6 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.6 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “L”PWM/VFM Auto Switching Control RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.6 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.6 V) MODE = “H” Forced PWM Control MODE = “H” Forced PWM Control RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.6 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.6 V) 0.50 0.55 0.60 0.65 0.70 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 0.50 0.55 0.60 0.65 0.70 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Voltage Output Current 200mA-->1000mA Output Current 1000mA-->200mA Output Voltage 0.50 0.55 0.60 0.65 0.70 0.75 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 0.50 0.55 0.60 0.65 0.70 0.75 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Voltage Output Voltage Output Current 200mA-->1000mA Output Current 1000mA-->200mA 0.50 0.55 0.60 0.65 0.70 0.75 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) 0.50 0.55 0.60 0.65 0.70 0.75 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Voltage Output Voltage Output Current 1000mA-->2000mA Output Current 2000mA-->1000mA

No. EC -296-210909 RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.8 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.8 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “L”PWM/VFM Auto Switching Control RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.8 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.8 V) MODE = “H” Forced PWM Control MODE = “H” Forced PWM Control RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.8 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 0.8 V) 0.70 0.75 0.80 0.85 0.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 0.70 0.75 0.80 0.85 0.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Voltage Output Current 200mA-->1000mA Output Current 1000mA-->200mA Output Voltage 0.70 0.75 0.80 0.85 0.90 0.95 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 0.70 0.75 0.80 0.85 0.90 0.95 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Voltage Output Voltage Output Current 200mA-->1000mA Output Current 1000mA-->200mA 0.70 0.75 0.80 0.85 0.90 0.95 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 1000mA-->2000mA 0.70 0.75 0.80 0.85 0.90 0.95 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 2000mA-->1000mA Output Voltage Output Voltage

No. EC-296-210909 RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.2 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.2 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “L”PWM/VFM Auto Switching Control RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.2 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.2 V) MODE = “H” Forced PWM Control MODE = “H” Forced PWM Control RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.2 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.2 V) 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Current 200mA-->1000mA Output Current 1000mA-->200mA Output Voltage Output Voltage 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Voltage Output Voltage Output Current 200mA-->1000mA Output Current 1000mA-->200mA 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 1000mA-->2000mA 1.00 1.10 1.20 1.30 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 2000mA-->1000mA Output Voltage Output Voltage

No. EC -296-210909 RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.8 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.8 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “L”PWM/VFM Auto Switching Control RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.8 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.8 V) MODE = “H” Forced PWM Control MODE = “H” Forced PWM Control RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.8 V) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.8 V) 1.60 1.70 1.80 1.90 2.00 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 1.60 1.70 1.80 1.90 2.00 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Current 200mA-->1000mA Output Current 1000mA-->200mA Output Voltage Output Voltage 1.60 1.70 1.80 1.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 1.60 1.70 1.80 1.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Voltage Output Voltage Output Current 200mA-->1000mA Output Current 1000mA-->200mA 1.60 1.70 1.80 1.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 1000mA-->2000mA 1.60 1.70 1.80 1.90 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 2000mA-->1000mA Output Voltage Output Voltage

No. EC-296-210909 RP506Lxx1K/L/M (VIN = 5.0 V, VOUT = 3.3 V) RP506Lxx1K/L/M (VIN = 5.0 V, VOUT = 3.3 V) MODE = “L”PWM/VFM Auto Switching Control MODE = “L”PWM/VFM Auto Switching Control RP506Lxx1K/L/M (VIN = 5.0 V, VOUT = 3.3 V) RP506Lxx1K/L/M (VIN = 5.0 V, VOUT = 3.3 V) MODE = “H” Forced PWM Control MODE = “H” Forced PWM Control RP506Lxx1K/L/M (VIN = 5.0 V, VOUT = 3.3 V) RP506Lxx1K/L/M (VIN = 5.0 V, VOUT = 3.3 V) 3.10 3.20 3.30 3.40 3.50 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 3.10 3.20 3.30 3.40 3.50 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Current 200mA-->1000mA Output Current 1000mA-->200mA Output Voltage Output Voltage 3.10 3.20 3.30 3.40 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) 3.10 3.20 3.30 3.40 -20 0 20 40 60 80 100 120 140 160 180 Time t (μs) Output Voltage V OUT (V) 500 1000 1500 Output Current I OUT (mA) Output Voltage Output Voltage Output Current 200mA-->1000mA Output Current 1000mA-->200mA 3.10 3.20 3.30 3.40 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 1000mA-->2000mA 3.10 3.20 3.30 3.40 -20 0 20 40 60 80 100 120 140 160 180 Time t (us) Output Voltage V OUT (V) 1000 2000 3000 Output Current I OUT (mA) Output Current 2000mA-->1000mA Output Voltage Output Voltage

No. EC -296-210909 20) Auto Switching Control Waveform RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.2 V, IOUT = 1 mA) RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.2 V, IOUT = 1 mA) RP506Lxx1G/H/N (VIN = 3.6 V, VOUT = 1.8 V, IOUT = 1mA) RP506Lxx1G/H/N (VIN = 3.6 V, VOUT =1.8 V, IOUT = 1 mA) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.2 V, IOUT = 1mA) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.2 V, IOUT = 1 mA) 1.15 1.20 1.25 1.30 -100 0 100 200 300 400 500 600 700 800 900 Time t (us) Output Voltage V OUT (V) Mode Input Voltage V MODE(V) Output Voltage Mode Input Voltage 1.15 1.20 1.25 1.30 -100 0 100 200 300 400 500 600 700 800 900 Time t (us) Output Voltage V OUT (V) Mode Input Voltage V MODE(V) Output Voltage Mode Input Voltage 1.75 1.80 1.85 1.90 1.95 2.00 -100 0 100 200 300 400 500 600 700 800 900 Time t (us) Output Voltage V OUT (V) Mode Input Voltage V MODE(V) Output Voltage Mode Input Voltage 1.75 1.80 1.85 1.90 1.95 2.00 -100 0 100 200 300 400 500 600 700 800 900 Time t (us) Output Voltage V OUT (V) Mode Input Voltage V MODE(V) Output Voltage Mode Input Voltage 1.15 1.20 1.25 1.30 -200 0 200 400 600 800 1000 1200 1400 1600 1800 Time t (us) Output Voltage V OUT (V) Mode Input Voltage V MODE V) Output Voltage Mode Input Voltage 1.15 1.20 1.25 1.30 -200 0 200 400 600 800 1000 1200 1400 1600 1800 Time t (us) Output Voltage V OUT (V) Mode Input Voltage V MODE (V) Output Voltage Mode Input Voltage

No. EC-296-210909 RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.8 V, IOUT = 1 mA) RP506Lxx1K/L/M (VIN = 3.6 V, VOUT = 1.8 V, IOUT = 1 mA) 1.75 1.80 1.85 1.90 1.95 2.00 -200 0 200 400 600 800 1000 1200 1400 1600 1800 Time t (us) Output Voltage V OUT (V) Mode Input Voltage V MODE (V) Output Voltage Mode Input Voltage 1.75 1.80 1.85 1.90 1.95 2.00 -200 0 200 400 600 800 1000 1200 1400 1600 1800 Time t (us) Output Voltage V OUT (V) Mode Input Voltage V MODE (V) Output Voltage Mode Input Voltage

POWER DISSIPATION DFN3030-12 Ver. A i The power dissipation of the package is dependent on PCB material, layout, and environmental conditions. The following measurement conditions are based on JEDEC STD. 51-7. Measurement Conditions Item Measurement Conditions Environment Mounting on Board (Wind Velocity = 0 m/s) Board Material Glass Cloth Epoxy Plastic (Four-Layer Board) Board Dimensions 76.2 mm × 114.3 mm × 0.8 mm Copper Ratio Outer Layer (First Layer): Less than 95% of 50 mm Square Inner Layers (Second and Third Layers): Approx. 100% of 50 mm Square Outer Layer (Fourth Layer): Approx. 100% of 50 mm Square Through-holes φ 0.3 mm × 32 pcs Measurement Result (Ta = 25°C, Tjmax = 150°C) Item Measurement Result Power Dissipation 4300 mW Thermal Resistance (θja) θja = 29°C/W Thermal Characterization Parameter (ψjt) ψjt = 3.1°C/W θja: Junction-to-Ambient Thermal Resistance ψjt: Junction-to-Top Thermal Characterization Parameter Power Dissipation vs. Ambient Temperature Measurement Board Pattern 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 0 25 50 75 100 125 150 Power Dissipation (mW) Ambient Temperature (°C) 105 4300

PACKAGE DIMENSIONS DFN3030-12 Ver. A i ∗ The tab on the bottom of the package is substrate level (GND). It is recommended that the tab be connected to the ground plane on the board, or otherwise be left floating. 3.0 3.0 A B 0.1 INDEX 0.203 typ S 0.8 max. 0.25±0.05 0.5

0.05 M AB

1.7±0.1 6 1 C 0.35 2.5±0.1 Bottom View 0.05 S 0.40±0.05

1. T he products and the product specifications described in this document are subject to change or discontinuation of production without notice for reasons such as improvement. Therefore, before deciding to use the products, please refer to our sales representatives for the latest information thereon. 2. The materials in this document may not be copied or otherwise reproduced in whole or in part without the prior written consent of us. 3. This product and any technical information relating thereto are subject to complementary export controls (so- called KNOW controls) under the Foreign Exchange and Foreign Trade Law, and related politics ministerial ordinance of the law. (Note that the complementary export controls are inapplicable to any application-specific products, except rockets and pilotless aircraft, that are insusceptible to design or program changes.) Accordingly, when exporting or carrying abroad this product, follow the Foreign Exchange and Foreign Trade Control Law and its related regulations with respect to the complementary export controls. 4. The technical information described in this document shows typical characteristics and example application circuits for the products. The release of such information is not to be construed as a warranty of or a grant of license under our or any third party's intellectual property rights or any other rights. 5. The products listed in this document are intended and designed for automotive applications. Those customers intending to use a product in an application requiring extreme quality and reliability, for example, in a highly specific application where the failure or misoperation of the product could result in human injury or death should first contact us.

• Aerospace Equipment
• Equipment Used in the Deep Sea
• Power Generator Control Equipment (nuclear, steam, hydraulic, etc.)
• Life Maintenance Medical Equipment
• Fire Alarms / Intruder Detectors
• Vehicle Control Equipment (airplane, railroad, ship, etc.)
• Various Safety Devices
• Traffic control system
• Combustion equipment In case your company desires to use this product for any applications other than general electronic equipment mentioned above, make sure to contact our company in advance. Note that the important requirements mentioned in this section are not applicable to cases where operation requirements such as application conditions are confirmed by our company in writing after consultation with y our company. 6. We are making our continuous effort to improve the quality and reliability of our products, but semiconductor products are likely to fail with certain probability. In order to prevent any injury to persons or damages to property resulting from such failure, customers should be careful enough to incorporate safety measures in their design, such as redundancy feature, fire containment feature and fail-safe feature. We do not assume any liability or responsibility for any loss or damage arising from misuse or inappropriate use of the products. 7. The products have been designed and tested to function within controlled environmental conditions. Do not use products under conditions that deviate from methods or applications specified in this datasheet. Failure to employ the products in the proper applications can lead to deterioration, destruction or failure of the products. We shall not be responsible for any bodily injury, fires or accident, property damage or any consequential damages resulting from misuse or misapplication of the products. 8. Quality Warranty 8-1. Quality Warranty Period In the case of a product purchased through an authorized distributor or directly from us, the warranty period for this product shall be one (1) year after delivery to your company. For defective products that occurred during this period, we will take the quality warranty measures described in section 8-2. However, if there is an agreement on the warranty period in the basic transaction agreement, quality assurance agreement, delivery specifications, etc., it shall be followed. 8-2. Quality Warranty Remedies When it has been proved defective due to manufacturing factors as a result of defect analysis by us, we will either deliver a substitute for the defective product or refund the purchase price of the defective product. Note that such delivery or refund is sole and exclusive remedies to your company for the defective product. 8-3. Remedies after Quality Warranty Period With respect to any defect of this product found after the quality warranty period, the defect will be analyzed by us. On the basis of the defect analysis results, the scope and amounts of damage shall be determined by mutual agreement of both parties. Then we will deal with upper limit in Section 8-2. This provision is not intended to limit any legal rights of your company. 9. Anti-radiation design is not implemented in the products described in this document. 10. The X-ray exposure can influence functions and characteristics of the products. Confirm the product functions and characteristics in the evaluation stage. 11. WLCSP products should be used in light shielded environments. The light exposure can influence functions and characteristics of the products under operation or storage. 12. Warning for handling Gallium and Arsenic (GaAs) products (Applying to GaAs MMIC, Photo Reflector). These products use Gallium (Ga) and Arsenic (As) which are specified as poisonous chemicals by law. For the prevention of a hazard, do not burn, destroy, or process chemically to make them as gas or power. When the product is disposed of, please follow the related regulation and do not mix this with general industrial waste or household waste. 13. Please contact our sales representatives should you have any questions or comments concerning the products or the technical information. Official website https://www.nisshinbo-microdevices.co.jp/en/ Purchase information https://www.nisshinbo-microdevices.co.jp/en/buy/