MP2122GJ-Z

DESCRIPTION 

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 45uA quiescent current that makes it ideal for powering portable equipment that runs on a single cell lithium-ion(Li+) battery.

The MP2122 integrates dual 80mQ high-side switches and 35mQ synchronous rectifiers forhigh efficiency without an external Schottkydiode. Peak-current mode control and internal compensation limits the minimum number of readily-available extemal components.

Fault-condition protections include cycle-by-cycle current limiting and thermal shutdown.

The MP2122 is available in an 8-pin TSOT23-8 package.

FEATURES

· Dual 2A-Output Curent

· >93%Peak Efficiency

· >80% Light-Load Efficiency

· Wide 2.7V-to-6V Operating Input Range

· 80mQ and 35mQ Internal Power MOSFET

· 1MHz Fixed Switching Frequency

· Adjustable Output from 0.608V to VIN

· 180°Phase-Shifted Operation

· 100% Duty-Cycle Operation

· 45uA Quiescent Current

· Cycle-by-Cycle Over-Current Protection

· Short-Circuit Protection with Hiccup Mode

· Thermal Shutdown

· Available in an 8-pin TSOT23-8 Package 

APPLICATIONS

· Small/Handhold Devices

· DVD Drivers

· Portable Instruments

· Smartphones and Feature Phones

· Battery-Powered Devices

TYPICAL APPLICATION

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