MP2148GQD-12 | DigiCamel IC Datasheet

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MP2148 MPS | Alldatasheet

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1A Synchronous Step-down Converter with 11µA Iq in Ultra-small 1x1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 1 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. The Future of Analog IC Technology

DESCRIPTION

The MP2148 is a monolithic, step-down, switch- mode converter with built-in internal power MOSFETs. It achieves 1A continuous output current from a 2.3V-to-5.5V input voltage with excellent load and line regulation. The output voltage can be regulated to as low as 0.6V. The Constant-On-Time control scheme provides fast transient response and eases loop stabilization. Fault protections include cycle-by- cycle current limiting and thermal shutdown. The MP2148 is available in an ultra-small QFN- 6 (1.0mmx1.5mm) package and requires a minimal number of readily available standard external components. The MP2148 is ideal for a wide range of applications including high performance DSPs, wireless power, portable and mobile devices, and other low-power systems.

FEATURES

Low I Q: 11μA
2.2MHz Switching Frequency
EN for Power Sequencing
Power Good Only for Fixed Output Version
Wide 2.3V-to-5.5V Operating Input Range
Output Adjustable from 0.6V
Up to 1A Output Current
120m Ω and 80mΩ Internal Power MOSFET Switches
Output Discharge
100% Duty Cycle
Short-Circuit Protection with Hiccup Mode
Stable with Low ESR Output Ceramic Capacitors
Available in a QFN-6 (1.0mmx1.5mm) Package

APPLICATIONS

Wireless/Networking Cards
Portable and Mobile Devices
Battery Powered /Wearable Devices
Low Voltage I/O System Power All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION MP2148 GND FB VIN 10μF EN VIN VOUT 1.2V/1A SW 10μF 200kΩ 200kΩ EN OUT 1μH

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 2 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved.

ORDERING INFORMATION

Part Number* Package Top Marking VOUT Range MP2148GQD QFN-6 (1.0mmx1.5mm) See Below Adjustable MP2148GQD-12 See Below Fixed 1.2V MP2148GQD-15 See Below Fixed 1.5V MP2148GQD-18 See Below Fixed 1.8V MP2148GQD-25 See Below Fixed 2.5V MP2148GQD-33 See Below Fixed 3.3V * For Tape & Reel, add suffix –Z (e.g. MP2148GQD–Z); TOP MARKING CF: product code of MP2148GQD; LL: lot number; TOP MARKING DH: product code of MP2148GQD-12; LL: lot number; TOP MARKING DQ: product code of MP2148GQD-15; LL: lot number;

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 3 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TOP MARKING DJ: product code of MP2148GQD-18; LL: lot number; TOP MARKING DZ: product code of MP2148GQD-25; LL: lot number; TOP MARKING DN: product code of MP2148GQD-33; LL: lot number;

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 4 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. PACKAGE REFERENCE TOP VIEW TOP VIEW MP2148GQD MP2148GQD-12 MP2148GQD-15 MP2148GQD-18 MP2148GQD-25 MP2148GQD-33 QFN-6 (1.0mmx1.5mm) ABSOLUTE MAXIMUM RATINGS (1) -0.3V (-5V for <10ns) to 6V (8V for <10ns or 10V for <3ns) Continuous Power Dissipation (TA = +25°C) (2) Recommended Operating Conditions (3) Operating Junction Temp. (TJ). -40°C to +125°C Thermal Resistance (4) θJA θJC QFN-6 (1mm x1.5mm)………… 220 110 °C/W Notes: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature T J (MAX), the junction-to- ambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation a t any ambient temperature is calculated by P D (MAX) = (T J (MAX)-TA)/θJA. Exceeding the maximum allowable powe r dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanen t damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB.

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 5 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

VIN = 3.6V, TJ = -40°C to +125°C, Typical value is tested at TJ = +25°C. The limit over temperature is guaranteed by characterization, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Feedback Voltage (MP2148GQD Only) VFB 2.3V ≤ VIN ≤ 5.5V, TJ=25°C 594 600 606 mV TJ=-40°C to +125°C 588 612 Fixed Output Voltage(7) Only for MP2148GQD- 12, IOUT=10mA, TJ=+25°C 1.188 1.2 1.212 V Only for MP2148GQD- 12, IOUT=10mA, TJ=-40°C to +125°C 1.176 1.2 1.224 V Only for MP2148GQD- 15, IOUT=10mA, TJ=+25°C 1.485 1.5 1.515 V Only for MP2148GQD- 15, IOUT=10mA, TJ=-40°C to +125°C 1.470 1.5 1.530 V Only for MP2148GQD- 18, IOUT=10mA, TJ=+25°C 1.782 1.8 1.818 V Only for MP2148GQD- 18, IOUT=10mA, TJ=-40°C to +125°C 1.764 1.8 1.836 V Only for MP2148GQD- 25, IOUT=10mA, TJ=+25°C 2.475 2.5 2.525 V Only for MP2148GQD- 25, IOUT=10mA, TJ=-40°C to +125°C 2.450 2.5 2.550 V Only for MP2148GQD- 33, IOUT=10mA, TJ=+25°C 3.267 3.3 3.333 V Only for MP2148GQD- 33, IOUT=10mA, TJ=-40°C to +125°C 3.234 3.3 3.366 V Feedback Current (MP2148GQD only) IFB V FB = 0.63V 50 100 nA PFET Switch On Resistance R DSON P 120 m Ω NFET Switch On Resistance R DSON N 80 m Ω Switch Leakage Current VEN = 0V, TJ=25°C 0 1 μA PFET Peak Current Limit Sourcing 1.8 2.4 A NFET Valley Current Limit Sourcing, valley current limit 1.5 A ZCD 0 mA On Time (MP2148GQD only) TON VIN=5V, VOUT=1.2V 110 ns VIN=3.6V, VOUT=1.2V 150

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 6 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. VIN = 3.6V, TJ = -40°C to +125°C, Typical value is tested at TJ = +25°C. The limit over temperature is guaranteed by characterization, unless otherwise noted. Parameter Symbol Condition Min Typ Max Units Switching Frequency f s VIN=5V, VOUT=1.2V, IOUT=500mA, TJ=25°C(5) 1760 2200 2640 kHz VIN=5V, VOUT=1.2V, IOUT=500mA ,TJ=-40°C to +125°C(5) 1650 2200 2750 kHz Minimum Off Time T MIN-OFF 60 ns Minimum On Time(5) T MIN-ON 60 ns Soft-Start Time T SS-ON V OUT rise from 10% to 90% 0.5 ms Under Voltage Lockout Threshold Rising 2 2.25 V Under Voltage Lockout Threshold Hysteresis 150 mV EN Input Logic Low Voltage 0.4 V EN Input Logic High Voltage 1.2 V Output Discharge Resistor R DIS VEN=0V, VOUT=1.2V 1 k Ω EN Input Current VEN=2V 1.2 μA VEN=0V 0 μA Supply Current (Shutdown) VEN=0V, TJ=25°C 0 1 μA Supply Current (Quiescent) VEN=2V, VFB=0.63V, VIN=3.6V,5V, TJ=25°C 11 13 μA Power Good Leakage Current (MP2148GQD-XX only) I PG 50 100 nA Power Good Upper Trip Threshold (MP2148GQD-XX only) Vo with Respect to the Regulation 90 % Power Good Lower Trip Threshold (MP2148GQD-XX only) 85 % Power Good Delay (MP2148GQD-XX only) 70 μs Power Good Sink Current Capability (MP2148GQD-XX only) Sink 1mA 400 mV Thermal Shutdown(6) 160 °C Thermal Hysteresis(6) 30 °C Notes: 5) Guaranteed by characterization. 6) Guaranteed by design. 7) Without Sleep Mode.

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 7 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS VIN = 5V, VOUT = 1.2V, L =1.0µH, TA = +25ºC, unless otherwise noted.

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 8 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 5V, VOUT = 1.2V, L =1.0µH, TA = +25ºC, unless otherwise noted.

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 9 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 5V, VOUT = 1.2V, L =1.0µH, TA = +25ºC, unless otherwise noted. VOUT/AC 50mV/div. VOUT/AC 100mV/div. VIN 5V/div. IL 500mA/div. Steady State without Load Steady State with 1A Load VOUT 1V/div. VIN 5V/div. VSW 5V/div. IL 1A/div. VOUT 1V/div. VIN 5V/div. VSW 5V/div. IL 1A/div. VOUT 1V/div. VIN 5V/div. VSW 5V/div. IL 1A/div. VIN Power Up without Load VIN Shut Down without Load VIN Power Up with 1A Load VIN 5V/div. VSW 2V/div. IL 0.2A/div. VOUT/AC 20mV/div. VIN 5V/div. VSW 2V/div. IL 0.2A/div. VOUT/AC 50mV/div. VIN 5V/div. VSW 2V/div. IL 1A/div. Steady State VIN=3.6V, VOUT=3.3V, IOUT=0.05A, AAM Steady State VIN=3.6V, VOUT=3.3V, IOUT=1A Steady State VIN=3.6V, VOUT=3.3V, IOUT=0.25A, AAM VSW 2V/div. VOUT/AC 10mV/div. VIN 5V/div. IL 1A/div. VSW 2V/div. Steady State VIN=3.6V, VOUT=3.3V, IOUT=0A,AAM VOUT/AC 100mV/div. VIN 5V/div. IL 0.2A/div. VSW 5V/div.

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 10 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 5V, VOUT = 1.2V, L =1.0µH, TA = +25ºC, unless otherwise noted.

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 11 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 5V, VOUT = 1.2V, L =1.0µH, TA = +25ºC, unless otherwise noted.

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 12 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. PIN FUNCTIONS Pin # Name Description

1 FB/PG

MP2148GQD: Feedback Pin. An external resistor divider from the output to GND, tapped to the FB pin, sets the output voltage. MP2148GQD-XX: Power Good Indicator. The output of this pin is an open drain output. Keep PG pulls up voltage is lower than Vin. 2 GND Power Ground. 3 VIN Supply Voltage. The MP2148 operates from a +2.3V to +5.5V unregulated input. Decouple capacitor is needed to prevent large voltage spikes from appearing at the input. 4 SW Output Switching Node. SW is the drain of the internal high-side P-Channel MOSFET. Connect the inductor to SW to complete the converter. 5 EN On/Off Control. 6 OUT Output Voltage Power Rail and Input Sense Pin for Output Voltage. Connect load to this pin. Output capacitor is needed to decrease the output voltage ripple.

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 13 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. BLOCK DIAGRAM Figure 1: Functional Block Diagram Note: Optional 1: FB pin is only for MP2148GQD Optional 2: PG pin is only for MP2148GQD-XX

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 16 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. Power Good Indictor (only for MP2148GQD- XX) The MP2148 has an open drain and need a external pull-up resistor (100k Ω~500kΩ) for the power good indicator (Note: Keep PG pull up voltage is lower than Vin). When V FB is within - 10% of regulation voltage, V PG is pulled up to Vo/Vin by the external resistor. If V FB exceeds the -10% window, the internal MOSFET pulls the PG to ground. The MOSFET has a maximum RDSON of less than 400Ω. Current limit The MP2148 typically has a 2.4A high-side switch current limit. When the high side switch hits its current limit, the MP2148 will remain in hiccup mode until the current drops. This prevents the inductor current from continuing to rise and damage components. Short Circuit and Recovery The MP2148 will also enter short-circuit protection mode when it hits the current limit, and tries to recover with hiccup mode: The MP2148 will disable the output power stage, discharge the soft-start capacitor and then automatically try soft-start again. If the short circuit condition remains after soft-start ends, the MP2148 repeats this cycle until the short circuit disappears and output rises back to regulation level.

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN MP2148 Rev. 1.11 www.MonolithicPower.com 18 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. For simplification, choose an input capacitor with an RMS current rating greater than half of the maximum load current. The input capacitor can be electrolytic, tantalum or ceramic. When using electrolytic or tantalum capacitors, add a small and high quality ceramic 0.1 μF capacitor as close to the IC as possible. When using ceramic capacitors, make sure that they have enough capacitance to provide sufficient charge to prevent excessive voltage ripple at the input. The input voltage ripple caused by capacitance can be estimated as: LOAD OUT OUT IN INSI N IV VV1 fC 1V V Selecting the Output Capacitor The output capacitor (C2) stabilizes the DC output voltage. Ceramic capacitors are recommended. Low ESR capacitors are preferred to limit the output voltage ripple. Estimate the output voltage ripple as: OUT OUT OUT ESR S1 I N S VV 1V1 R fL V 8 fC 2 Where L1 is the inductor value and R ESR is the equivalent series resistance (ESR) value of the output capacitor. When using ceramic c apacitors, the capacitance dominates the impedance at the switching frequency, and causes most of the output voltage ripple. For simplification, the output voltage ripple can be estimated as: OUT OUT OUT 2 S1 I N VVΔV1 8f L C 2 V For tantalum or electrolytic capacitors, the ESR dominates the impedance at the switching frequency. For simplification, the output ripple can be approximated as: OUT OUT OUT ESR INS1 VVΔV1 R fL V The characteristics of the output capacitor also affect the stability of the regulation system. PCB Layout Proper layout of the switching power supplies is very important, and sometimes critical for proper function. For the high-frequency switching converter, poor layout design can result in poor line or load regulation and stability issues. Place the high-current paths (GND, IN and SW) very close to the device with short, direct and wide traces. The input capacitor needs to be as close as possible to the IN and GND pins. Place the external feedback resistors next to the FB pin. Keep the switching node SW short and away from the feedback network. Vout sense line need as short as possible or keeps away from power inductor, especial forbids surrounding inductor. Figure11 is advised PCB layout. Figure 11: Two Ends of Input Decoupling Capacitor Close to Pin 2 and Pin3.

MP2148 –1A SYNCHRONOUS STEP-DOWN CONVERTER WITH 11µA IQ IN ULTRA-SMALL 1X1.5mm QFN NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP2148 Rev. 1.11 www.MonolithicPower.com 20 5/25/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved.

PACKAGE INFORMATION

QFN-6 (1.0mmx1.5mm) SIDE VIEW BOTTOM VIEW NOTE: 1) ALL DIMENSIONS ARE IN MILLIMETERS. 2) EXPOSED PADDLE SIZE DOES NOT INCLUDE MOLD FLASH. 3) LEAD COPLANARITY SHALL BE 0.10 MILLIMETERS MAX. 4) JEDEC REFERENCE IS MO-220. 5) DRAWING IS NOT TO SCALE. PIN 1 ID MARKING TOP VIEW PIN 1 ID INDEX AREA RECOMMENDED LAND PATTERN PIN 1 ID

Product Information

MP2148GQD-12 specifications and overview.

Summary

1A Synchronous Step-down Converter with 11uA Iq in Ultra-small 1x1.5mm QFN

Description

1A Synchronous Step-down Converter with 11uA Iq in Ultra-small 1x1.5mm QFN

Source title MP2148GQD-12 Datasheet(PDF) - Monolithic Power Systems

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