R5524N NISSHINBO | Alldatasheet

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USB High-side Power Switch / Load Switch for Automotive Applications NO.EC-188-221122 OUTLINE The R5524x is a CMOS-based high-side MOSFET switch IC which conforms to the universal serial bus (USB) standard. It can also be used as a load switch IC with protection function. By using an Nch MOSFET with low On-resistance (Typ. 100 mΩ) as a switching transistor, the device can provide low dropout voltage. Internally, the device consists of an overcurrent limiting circuit, a thermal shutdown circuit, an undervoltage lockout (UVLO) circuit and a reverse current protection circuit. The device also consists of an internal delay circuit to prevent the output of false flag signals caused by inrush current. To achieve simplification of layout design, the overcurrent detection accuracy has been improved. The R5524x is offered in a 5 -pin SOT-23-5 package, which achieves the smallest possible footprint solution on boards where area is limited.

FEATURES

 N- channel MOS High-Side Switch IC  U nder-voltage Lockout (UVLO) Circuit  Thermal Shutdown Circuit  Reverse Current Protection Circuit

APPLICATIONS

 C ar accessories including car audio equipment, car navigation system, and ETC system. *1 only for R5524x001A/B, R5524x002A/B *2 only for R5524N004A

NO.EC-188-221122 BLOCK DIAGRAMS R5524xxxxA Block Diagram GND FLG GATE CONTROL VIN VOUT EN UVLO FLG DELAY CURRENT LIMIT THERMAL SHUTDOWN R5524xxxxB Block Diagram VIN VOUT EN FLG GND UVLO FLG DELAY THERMAL SHUTDOWN CURRENT LIMIT GATE CONTROL

NO.EC-188-221122 SELECTION GUIDE The overcurrent limit protection type, the current limit threshold and the auto discharge options*1 for the ICs are user-selectable options. Selection Guide Product Name Package Quantity per Reel Pb Free Halogen Free R5524N00x∗-TR-#E SOT-23-5 3,000 pcs Yes Yes x: Specify the combination of Overcurrent Limit Protection type and Current Limit Threshold. 1: Latch-off Type, Current Limit Threshold: Min. 650 mA 2: Constant Current Type, Current Limit Threshold: Min. 650 mA 4: Cosntant Current Type, Current Limit Threshold: Min. 1.25 A*2 ∗: Specify auto-discharge options. A: Auto-discharge included B: Auto-discharge not included # : Specify Automotive Class Code Operating Temperature Range Guaranteed Specs Temperature Range Screening A -40°C to 85°C 25°C High Temperature *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 only for R5524N004A

NO.EC-188-221122 PIN DESCRIPTION 1 3 5 4 SOT-23-5 Pin Configuration SOT23-5 Pin Description Pin No. Symbol Description

1 VIN Input Pin

2 GND Ground Pin

3 EN Chip Enable Pin, Active-high

4 FLG Flag Pin, Open Drain Output

5 VOUT Output Pin

NO.EC-188-221122 ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings Symbol Item Rating Unit VIN Input Voltage 6.0 V VEN Enable Pin Input Voltage −0.3 to 6.0 V VFLG Flag Pin Voltage −0.3 to 6.0 V IFLG Flag Pin Current 14 mA VOUT Output Pin Voltage −0.3 to 6.0 V IOUT Output Current Internally Controlled PD Power Dissipation (Standard Land Pattern)*1 SOT-23-5 660 mW Tj Junction Temperature −40 to 125 °C Tstg Storage Temperature Range −55 to 125 °C *1 Refer to PACKAGE INFORMATION for detailed information. ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time 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 RATINGS Symbol Item Rating Unit VIN Input Voltage 2.7 to 5.5 V Ta Operating Temperature Range -40 to 85 °C RECOMMENDED OPERATING RATINGS All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating ratings. The semiconductor devices cannot operate normally over the recommended operating ratings, even if when they are used over such ratings by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating ratings.

NO.EC-188-221122

ELECTRICAL CHARACTERISTICS

Electrical Characteristics (Ta = 25°C) Symbol Item Conditions Min. Typ. Max. Unit IDD1 Supply Current (Active Mode) VOUT = OPEN, EN = ”H”, VIN = 5 V 110 180 µA IDD2 Supply Current (Standby Mode) VOUT = OPEN, EN = ”L”, VIN = 5 V 0.1 1.0 µA RON Switch On Resistance VIN = 5 V, IOUT = 500 mA 100 150 mΩ ton Output Turn-on Delay VIN = 5 V, RL = 60 Ω 400 µs toff Output Turn-off Delay VIN = 5V, RL = 60 Ω 50 µs VUVLO UVLO Release Voltage VIN Rising 2.3 2.5 2.7 V VHYS UVLO Hysteresis Range VIN Falling 0.1 V ITH Current Limit Threshold R5524x001A/ 001B R5524x002A/ 002B VIN = 5 V 650 800 980 mA R5524N004A VIN = 5 V 1.25 1.55 1.85 A VIN = 5 V, Ta = 0 to 70°C 1.2 1.55 1.9 ILIM Overcurrent Limit VIN = 5 V, VOUT = 0 V, after 5 ms 550 650 800 mA tFD Flag Delay Time*1 VIN = 5 V, starts when overcurrent is detected and ends when FLG = “L” 7 20 30 ms TTSD Thermal Shutdown Temperature Junction Temperature 135 °C TTSR Thermal Shutdown Released Temperature Junction Temperature 120 °C IEN Enable Pin Input Current 0.01 1.0 µA VEN1 Enable Pin Input Voltage 1 VEN Rising 1.7 6.0 V VEN2 Enable Pin Input Voltage 2 VEN Falling −0.3 0.8 V ILO Output Leakage Current 0.1 1.0 µA VLF Flag "L" Output Voltage ISINK = 1 mA 0.4 V IFOF Flag Off Current VFLG = 5.5 V 0.01 1.0 µA IREV Reverse Leakage Current VIN = 0 V, VOUT = 5.5 V 50 µA RLOW Nch. On-resistance for Auto Discharge (R5524x00xA) 450 Ω All test items listed under Electrical Characteristics are done under the pulse load condition (Tj ≈ Ta = 25°C) except Thermal Shutdown Temperature and Thermal Shutdown Released Temperature. *1 Flag Delay Time is dependent on Input Voltage.

NO.EC-188-221122 TYPICAL APPLICATION VIN ON/OFF Over Current VIN USB Host Controller FLG*1 4 1 R5524x

3 EN GND

10 kΩ ~ 100 kΩ 1 µF VOUT VBUS USB Client Device 47 µF*2 R5524x Typical Application *1 FLG pin is Nch. Open Drain Output. *2 A 47 µF or more output capacitor is recommended. According to a USB standard, a 120 µF or more output capacitor is required. TECHNICAL NOTES Bypass Capacitor A 0.1µF to 1 µF bypass capacitor between the V IN pin and the GND pin, close to the device, is recommended. This precaution reduces power supply transients that may cause ringing on the input. Pull-up Resistor of FLG Pin A 10 kΩ to 100 kΩ pull-up resistor is recommended for the FLG pin. R5524x001A/001B The R5524x001A/001B is equipped with a latch-off function which requires initialization before start-up. Case 1: Start-up by EN Pin Control EN pin must be enabled with the delay of 10 µs or more against 90% of V IN voltage rising edge. Case 2: Start-up by EN Pin Tied to V IN Pin Slew rat e of VIN must be 40 µs/V or slower.

NO.EC-188-221122 TIMING CHART Output On-time and Output Off-time 50% 90% 50% 10% tON tOFF VEN VOUT R5524x Timing Chart Flag Delay Time R5524x001A/001B Timing Chart (Latch-off Type) (1) When the IOUT is ITH or less, the current is not limited. (2) Once the IOUT reaches to ITH, the IOUT is limited by ILIM. (3) When the IOUT drops to I LIM or less within the t FD time, the current limit is released. The current is not limited until the IOUT exceeds ITH again. (4) When the I OUT reaches to I TH and it is limited by ILIM for tFD or more, the switch transistor turns off and VFLG becomes “Low”. <tFD tFD ITH ILIM IOUT (1) (2) (3) (4) VIN VFLG

NO.EC-188-221122 R5524x002A/002B and R5524N004A Timing Chart (Constant Current Type) (1) When IOUT is ITH or less, the current is not limited. (2) Once the IOUT reaches to ITH, the IOUT is limited by ILIM. (3) When the I OUT drops to I LIM or less within the t FD time, the current limit is released. The current is not limited until the IOUT exceeds ITH again. (4) When the IOUT reaches to ITH and it is limited by ILIM for tFD or more, the VFLG becomes “Low”. <tFD tFD ITH ILIM IOUT (1) (2) (3) (4) VIN VFLG

NO.EC-188-221122 Overcurrent Limiting Function The R5524x001A/001B has the built-in latch-off type over-current limit circuit. When the over-current is detected, the protection circuit becomes active and the switch-transistor is turned OFF. The latch function is released if the input voltage value is exceeded in the release threshold of the UVLO circuit value after when it became lower than the detection threshold of the UVLO circuit value; or the EN pin set to the enabling condition again after set to the disabling condition. If the over current condition occurred when the input voltage value was close to the minimum operating input voltage value. Under this condition, the voltage descends by the parasitic impedance on the power supply side, and it might fall below the detection threshold of the UVLO circuit. In this case, the switch-transistor is turned OFF and because of that the voltage drop of power line’s parasitic impedance stops; the latch function is released with the UVLO and it becomes the over current condition again. The switch transistor keeps continual ON and OFF until one of the following is done; increasing the input voltage value; the setting of EN pin is disabling; or reducing the value of load current. Moreover, the supply -voltage changed by the load -current dramatically changed depends upon the parasit ic impedance of the wiring on the load side or the power supply side. Due to this, decreasing the parasitic impedance by the wiring on board is recommended. The switch transistor of the R5524x001A/001B is turned OFF when the latch -off-function operates under the condition of the load of the constant current as the load device, such as the electronic load and so on, connecting with the V OUT pin of the R5524 x001A/001B. Because the load device keeps the co nstant current, the V OUT pin voltage may become negative potential. If the V OUT pin is exceed the absolute maximum rating may cause the permanent damages to the device, please avoid using in this situation. The R5524x002A/002B and R5524N004A have the built-in over current protection circuit as the constant current type. It detects as the over -current condition, if the current flows as the ITH defined. Then operating the switch transistor to limit the output current to be the constant current defined by the ILIM. If the condition of the over- current limit caused by the V OUT pin clamped to the GND were continued the temperature of the ICs would increase drastically. The switch -transistor is turned OFF if the temperature of the ICs becomes over 135°C (Typ.). And after this, the switch-transistor is turned ON again when the temperature of ICs decreased approximately 15°C. The switch-transistor keeps continual ON and OFF until either the switch is turned OFF or the VOUT pin is removed from GND.

NO.EC-188-221122

PACKAGE INFORMATION

Power Dissipation (SOT-23-5) 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 × 7 pcs Measurement Result (Ta = 25°C, Tjmax = 125°C) Item Measurement Result Power Dissipation 660 mW Thermal Resistance (θja) θja = 150°C/W Thermal Characterization Parameter (ψjt) ψjt = 51°C/W θja: Junction-to-Ambient Thermal Resistance ψjt: Junction-to-Top Thermal Characterization Parameter Power Dissipation vs. Ambient Temperature Measurement Board Pattern

NO.EC-188-221122 PACKAGE DIMENSIONS (SOT-23-5) 2.9±0.2 1.9±0.2 (0.95) (0.95) 5 4 1 2 3 1.6-0.1 +0.2 2.8±0.3 0.4±0.1 0.8±0.1 1.1±0.1 0～0.1 0.15-0.05 +0.1 (Unit: mm) 0.2min.

NO.EC-188-221122 MARK SPECIFICATION (SOT-23-5) : Product Code … Refer to MARK SPECIFICATION TABLE (SOT-23-5) : Lot Number … Alphanumeric Serial Number 5 4 1 2 3 SOT-23-5 Mark Specification MARK SPECIFICATION TABLE (SOT-23-5) Mark Specification Table Product Name  R5524N001A M A A R5524N001B M A B R5524N002A M A C R5524N002B M A D R5524N004A M A F

NO.EC-188-221122 TEST CIRCUITS Supply Current Test Circuit Switch ON Resistance Test Circuit Output ON Time/Output OFF Time Test Circuit UVLO Released Voltage Test Circuit Over current Limit Test Circuit Current Limit Threshold Test Circuit Enable Input Voltage Test Circuit Flag Output Delay Time Test Circuit VIN VOUT EN FLG R5524x GND VIN A 0.1µF VEN VIN VOUT EN FLG R5524x GND VIN 0.1µF VEN V IOUT VIN VOUT EN FLG R5524x GND VIN 0.1µF VEN V 56Ω VIN VOUT EN FLG R5524x GND VIN 0.1µF V 100kΩ VIN VOUT EN FLG R5524x GND VIN 0.1µF VEN A VIN VOUT EN FLG R5524x GND VIN 0.1µF VEN A VIN VOUT EN FLG R5524x GND VIN 0.1µF VEN V 100kΩ VIN VOUT EN FLG R5524x GND VIN 0.1µF VEN V 10kΩ

NO.EC-188-221122 TYPICAL CHARACTERISTICS Note: Typical Characteristics are intended to be used as reference data; they are not guaranteed. 1) Supply Current vs. Temperature 2 ) Supply Current vs. Input Voltage 3) Switch ON Resistance vs. Temperature 4) Switch ON Resistance vs. Input Voltage 5) Output ON Time vs. Temperature (RL = 56 Ω) 6 ) Output ON Time vs. Input Voltage (RL = 56 Ω) 100 110 120 -50 -25 0 25 50 75 100 Temperature Topt (°C) Supply Current IDD1 (μA) 4.5V 5.0V 5.5V 100 110 120 Input Voltage VIN (V) Supply Current IDD1 (μA) -40°C 25°C 85°C 100 120 140 160 -50 -25 0 25 50 75 100 Temperature Topt (°C) Switch ON Resistance RON (mΩ) 4.5V 5.0V 5.5V IOUT=300mA 100 120 140 160 Input Voltage VIN (V) Switch ON Resistance RON (mΩ) -40°C 25°C 85°C IOUT=300mA 100 200 300 400 500 600 700 800 900 -50 -25 0 25 50 75 100 Temperature Topt (°C) Output ON Time tON (μs) 4.5V 5.0V 5.5V 100 200 300 400 500 600 700 800 900 Input Voltage VIN (V) Output ON Time tON (μs) -40°C 25°C 85°C

NO.EC-188-221122 7) UVLO Voltage vs. Temperature 8) Output Voltage vs. Input Voltage 9) Current Limit Threshold vs. Temperature 10) Current Limit Threshold vs. Temperature ( 001x/ 002x) (004A) 11) Current Limit Threshold vs. Input Voltage 12) Current Limit Threshold vs. Input Voltage ( 001x/ 002x) (004A) 2.20 2.25 2.30 2.40 2.45 2.50 2.55 2.60 -50 -25 0 25 50 75 100 Temperature Topt (°C) UVLO Voltage VUVLO (V) UVLO Threshold Voltage UVLO Released Voltage 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0 1 2 3 4 5 Input Voltage VIN (V) Output Voltage VOUT (V) 800 810 820 830 840 850 860 870 -50 -25 0 25 50 75 100 Temperature Topt (°C) Current Limit Threshold ITH (mA) 4.5V 5.0V 5.5V 1.36 1.38 1.4 1.44 1.46 1.48 1.5 1.52 -50 -25 0 25 50 75 100 Temperature Topt (℃) Current Limit Treshold Ith (A) 4.5V 5.0V 5.5V 800 810 820 830 840 850 860 870 Input Voltage VIN (V) Current Limit Threshold ITH (mA) -40°C 25°C 85°C 1.36 1.38 1.40 1.42 1.44 1.46 1.48 1.50 1.52 2.5 3 3.5 4 4.5 5 5.5 6 Input Voltage Vin (V) Current Limit Threshold Ith (A) -40℃ 25℃ 85℃

NO.EC-188-221122 13) Overcurrent Limit vs. Temperature 14) Overcurrent Limit vs. Input Voltage 15) Flag Delay Time vs. Temperature 16) Flag Delay Time vs. Input Voltage 17) Enable Input Voltage vs. Temperature 18) Enable Input Voltage vs. Input Voltage 500 550 600 650 700 750 800 -50 -25 0 25 50 75 100 Temperature Topt (°C) Over Current Limit ILIM (mA) 4.5V 5.0V 5.5V 500 550 600 650 700 750 800 Input Voltage VIN (V) Over Current Limit ILIM (mA) -40°C 25°C 85°C -50 -25 0 25 50 75 100 Temperature Topt (°C) Flag Delay Time tFD (ms) 4.5V 5.0V 5.5V Input Voltage VIN (V) Flag Delay Time tFD (ms) -40°C 25°C 85°C 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 -50 -25 0 25 50 75 100 Temperature Topt (°C) Enable Pin Input Voltage VEN1 / VEN2 (V) V EN1 V EN2 VIN=5V 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 Input Voltage VIN (V) Enable Pin Input Voltage VEN1 / VEN2 (V) V EN1 V EN2 Vopt=25°C

NO.EC-188-221122 19) Overcurrent Response with Ramped Load 20 ) Overcurrent Response with Ramped Load (R5524x001x) ( R5524x002x) 21) Overcurrent Response with Ramped Load (R5524x004A) 22) Overcurrent Limit Transient Response (Output short during enable "H") (Enable "H" during Output Short) Time (5ms/div) IOUT (200mA/div) VFLG (5V/div) VIN=5V Time (5ms/div) IOUT (200mA/div) (5V/div) VFLG EN=” L” VIN=5V IOUT (200mA/div) VFLG (5V/div) EN="L" VIN=5.0V Time (10μs/div) (5V/div) IOUT (200mA/div) VEN VIN=5V VOUT=GND short Time (10μs/div) IOUT (2A/div) VOUT (5V/div) VIN=5V VEN=H Time (5md/div)

NO.EC-188-221122 23) Thermal Shutdown Operation 24) Output Voltage vs. Output Current 25) Output ON Time Response 26) Output OFF Time Response 27) Inrush current Characteristic Time (50ms/div) VFLG (5V/div) VEN (5V/div) IOUT (500mA/div) VIN=5V Time (100μs/div) IOUT (50mA/div) (2V/div) (5V/div) VOUT VEN VIN=5V RL=56Ω Time (10μs/div) VOUT (2V/div) IOUT (50mA/div) VEN (5V/div) VIN=5V RL=56Ω EN 10μF 100μF 300μF 300μF Time (1ms/div) VEN (5V/div) IOUT (200mA/div) VIN=5V RL=10Ω 0.5 1.5 2.5 3.5 4.5 0 0.2 0.4 0.6 0.8 1 Output Current IOUT (A) Output Voltage VOUT (V)

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