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MP2122A

6V, 2A, Low Quiescent Current, Dual, Synchronous Buck Regulator

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MP2122A

MP2122A

6V, 2A, Low Quiescent Current, Dual, Synchronous Buck Regulator

Datasheet

Description

The MP2122A is an internally compensated, 1MHz, fixed-frequency, dual, PWM, synchronous, step-down regulator with advanced light-load mode. The MP2122A operates from a 2.7V to 6V input, generates an output voltage as low as 0.608V, and has a 45µA quiescent current, making it ideal for powering portable equipment that run on a single-cell lithium-ion (Li+) battery.

The MP2122A 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.

Full protection features include cycle-by-cycle current limiting and thermal shutdown.

The MP2122A is available in an 8-pin TSOT23 package.

Features & Benefits

Dual 2A Output Current
>93% Peak Efficiency
>80%Light-Load Efficiency
Advanced Light-Load Mode
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 (OCP)
Short-Circuit Protection (SCP) with Hiccup Mode
Thermal Shutdown
Available in a TSOT23-8 Package

Active Part Numbers:

MP2122AGJ-P MP2122AGJ-Z

Meaning of P & Z

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MP2451 5v to 3.3V

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All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.

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