DESCRIPTION
The LT®1950 is a wide input range, forward, boost, flyback and SEPIC controller that drives an N-channel power MOSFET with few external components required.

FEATURES
■ Wide Input Range: 3V to 25V
■ Programmable Volt-Second Clamp
■ Output Power Levels from 25W to 500W
■ Auxiliary Boost Converter Provides 10V Gate Drive
   from VIN as Low as 3V
■ Programmable Operating Frequency (100kHz to
   500kHz) with One External Resistor
■ Programmable Slope Compensation
■ Programmable Leading Edge Blanking
■ ±2% Internal 1.23V Reference
■ Accurate Shutdown Pin Threshold with
   Programmable Hysteresis
■ 60ns Current Sense Delay
■ 2.5V Auxiliary Reference Output
■ Synchronizable to an External Clock up to 1.5 • fOSC
■ Current Mode Control
■ Small 16-Pin SSOP Package

APPLICATIONS
■ Telecom Power Supplies
■ Automotive Power Supplies
■ Portable Electronic Equipment
■ Isolated and Nonisolated DC/DC Converters