MP2122 6V, 2A, Low Quiescent Current Dual, SYNC Buck Regulator The Future of Analog IC Technology DESCRIPTION FEATURES The MP2122 is an internally-compensated, Dual 2A-Output Current 1MHz fixed-frequency, dual PWM, synchronous, >93% Peak Efficiency step-down regulator. The MP2122 operates >80% Light-Load Efficiency from a 2.7V-to-6V input, generates an output Wide 2.7V-to-6V Operating Input Range voltage as low as 0.608V, and has a 45A 80m and 35m Internal Power MOSFET quiescent current that makes it ideal for 1MHz Fixed Switching Frequency powering portable equipment that runs on a Adjustable Output from 0.608V to VIN single cell lithium-ion (Li+) battery. 180 Phase-Shifted Operation The MP2122 integrates dual 80m high-side 100% Duty-Cycle Operation switches and 35m synchronous rectifiers for 45A Quiescent Current high efficiency without an external Schottky Cycle-by-Cycle Over-Current Protection diode. Peak-current mode control and internal Short-Circuit Protection with Hiccup Mode compensation limits the minimum number of Thermal Shutdown readily-available external components. Available in an 8-pin TSOT23-8 Package Fault-condition protections include cycle-by-cycle APPLICATIONS current limiting and thermal shutdown. Small/Handhold Devices The MP2122 is available in an 8-pin TSOT23-8 DVD Drivers package. Portable Instruments Smartphones and Feature Phones Battery-Powered Devices All MPS parts are lead-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 VIN 5V 100 C IN 22F 90 IN 80 EN1 EN2 EN1 EN2 L2 L1 VOUT1 1.5uH 1.5uH 70 VOUT2 SW1 SW2 1.8V 1.2V 60 MP2122 C C OUT1 OUT2 R1 R3 22F 22F 806kO 806kO 50 GND FB1 FB2 40 R2 R4 30 412kO 825kO 0.01 0.1 1 10 MP2122 Rev. 1.02 www.MonolithicPower.com 1 6/12/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP2122AMP2122 6V, 2A, LOW QUIESCENT CURRENT, DUAL, SYNC BUCK REGULATOR ORDERING INFORMATION Part Number* Package Top Marking MP2122GJ TSOT23-8 See Below * For Tape & Reel, add suffix Z (e.g. MP2122GJZ) TOP MARKING AED: product code of MP2122GJ Y: year code PACKAGE REFERENCE TOP VIEW 8 1 FB2 FB1 EN2 2 7 IN 3 6 SW2 SW1 4 EN1 5 GND TSOT23-8 (1) (3) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC Supply Voltage VIN ..................................... 6.5V TSOT23-8 ..................................... 100 ..... 55 C/W V 0.3V (-3V for<10ns) to 6.5V (7.5V for<10ns) SW Notes: All Other Pins ............................. 0.3V to +6.5 V 1) Absolute maximum ratings are rated under room temperature unless otherwise noted. Exceeding these ratings may Junction Temperature ............................... 150C damage the device. Lead Temperature .................................... 260C 2) The maximum allowable power dissipation is a function of the (2) maximum junction temperature T (MAX), the junction-to- J Continuous Power Dissipation (T = +25C) A ambient thermal resistance , and the ambient temperature JA ................................................................. 1.25W T . The maximum allowable continuous power dissipation at A any ambient temperature is calculated by P (MAX) = (T Storage Temperature .............. 65C to +150 C D J (MAX)-T )/ . Exceeding the maximum allowable power A JA dissipation will cause excessive die temperature, and the Recommended Operating Conditions regulator will go into thermal shutdown. Internal thermal Supply Voltage V ............................. 2.7V to 6V IN shutdown circuitry protects the device from permanent Output Voltage V .................... 0.608V to 5.5V damage. OUT 3) Measured on JESD51-7, 4-layer PCB. Operating Junction Temp...... -40C to +125C MP2122 Rev. 1.02 www.MonolithicPower.com 2 6/12/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP2122A