MP2122GJ-Z

MP2122 6V, 2A, Low Quiescent Current Dual, SYNC Buck Regulator R EC R NE O EF W M ER D M E TO ES ND I E G M D N P2 S F O 12 R 2A The Future of Analog IC Technology DESCRIPTION FEATURES The MP2122 is an internally-compensated, 1MHz fixed-frequency, dual PWM, synchronous, step-down regulator. The MP2122 operates from a 2.7V-to-6V input, generates an output voltage as low as 0.608V, and has a 45µA quiescent current that makes it ideal for powering portable equipment that runs on a single cell lithium-ion (Li+) battery. The MP2122 integrates dual 80mΩ high-side switches and 35mΩ synchronous rectifiers for high efficiency without an external Schottky diode. Peak-current mode control and internal compensation limits the minimum number of readily-available external components.               Fault-condition protections include cycle-by-cycle current limiting and thermal shutdown. APPLICATIONS      The MP2122 is available in an 8-pin TSOT23-8 package. Dual 2A-Output Current >93% Peak Efficiency >80% Light-Load Efficiency Wide 2.7V-to-6V Operating Input Range 80mΩ and 35mΩ Internal Power MOSFET 1MHz Fixed Switching Frequency Adjustable Output from 0.608V to VIN 180° Phase-Shifted Operation 100% Duty-Cycle Operation 45µA Quiescent Current Cycle-by-Cycle Over-Current Protection Short-Circuit Protection with Hiccup Mode Thermal Shutdown Available in an 8-pin TSOT23-8 Package Small/Handhold Devices DVD Drivers 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 N O T VIN 5V 100 CIN 22µF 90 EN1 EN1 L1 1.5uH VOUT1 1.8V COUT1 22µF SW1 IN EN2 VOUT2 1.2V SW2 MP2122 R1 806kO EN2 L2 1.5uH R3 806kO FB1 GND FB2 COUT 2 22µF 80 70 60 50 40 R2 412kO MP2122 Rev. 1.02 6/12/2017 R4 825kO 30 0.01 0.1 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2017 MPS. All Rights Reserved. 1 10 1 MP2122 –6V, 2A, LOW QUIESCENT CURRENT, DUAL, SYNC BUCK REGULATOR ORDERING INFORMATION Package TSOT23-8 Top Marking See Below R EC R NE O EF W M ER D M E TO ES ND I E G M D N P2 S F O 12 R 2A Part Number* MP2122GJ * For Tape & Reel, add suffix –Z (e.g. MP2122GJ–Z); TOP MARKING AED: product code of MP2122GJ Y: year code PACKAGE REFERENCE TOP VIEW 1 8 FB1 EN2 2 7 IN SW2 3 6 SW1 EN1 4 5 GND T FB2 N O TSOT23-8 ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance Supply Voltage VIN ..................................... 6.5V VSW–0.3V (-3V for