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Description

The L5970D is a step down monolithic power switching regulator capable to deliver up to 1A at output voltages from 1.2V to 35V. The device uses an internal P-Channel D-MOS transistor (with a typical Rdson of 250m?) as switching element to minimize the size of the external components.

General features

■ Up to 1A output current

■ Operating input voltage from 4.4V to 36V

■ 3.3V / (±2) reference voltage

■ Output voltage adjustable from 1.2V to 35V

■ Low dropout operation: 100 duty cycle

■ 250KHz Internally fixed frequency

■ Voltage feedforward

■ Zero load current operation

■ Internal current limiting

■ Inhibit for zero current consumption

■ Synchronization

■ Protection against feedback disconnection

■ Thermal shutdown

Applications

■ Consumer: STB, DVD, TV, VCR, car radio, LCD monitors

■ Networking: XDSL, modems, DC-DC modules

■ Computer: printers, audio/graphic cards, optical storage, hard disk drive

■ Industrial: changers, car battery, DC-DC converters