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LT1939 Datasheet Monolithic 2a Step-down Regulator Plus Linear Regulator/controller

Manufacturer: Linear Technology (now Analog Devices)

General Description

www.DataSheet4U.com Wide Input Range: 3V to 25V Short-Circuit Protected Over Full Input Range 2A Output Current Capability Adjustable/Synchronizable Fixed Frequency Operation from 250kHz to 2.2MHz Soft-Start/Tracking Capability Output Adjustable Down to 0.8V Adjustable Linear Regulator/Driver with 13mA Output Capability Power Good Comparator with Complementary Outputs Low Shutdown Current: 12μA Thermally Enhanced 3mm × 3mm DFN Package The LT®1939 is a current mode PWM step-down DC/DC converter with an internal 2.3A switch.

The wide input range of 3V to 25V makes the LT1939 suitable for regulating power from a wide variety of sources, including automotive batteries, industrial supplies and unregulated wall adapters.

Resistor-programmable 250kHz to 2.2MHz frequency range and synchronization capability enable optimization between efficiency and external component size.

Key Features

  • n n n n n n n n n n LT1939 Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller.

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