DESCRIPTION
The LT ®1777 is a Buck (step-down) regulator designed for noise sensitive applications. It contains a dI/dt limiting circuit programmed via a small external inductor in the switching path. Internal circuitry also generates controlled dV/dt ramp rates.

FEATURES
■ Programmable dI/dt Limit
■ Internally Limited dV/dt
■ High Input Voltage: 48V Max
■ 700mA Peak Switch Rating
■ True Current Mode Control
■ 100kHz Fixed Operating Frequency
■ Synchronizable to 250kHz
■ Low Supply Current in Shutdown: 30µA
■ Low Thermal Resistance 16-Pin SO Package

APPLICATIONS
■ Automotive Cellular and GPS Receivers
■ Telecom Power Supplies
■ Industrial Instrument Power Supplies