DESCRIPTION
The LT ®1956/LT1956-5 are 500kHz monolithic buck switching regulators with an input voltage capability up to 60V. A high efficiency 1.5A, 0.2Ω switch is included on the die along with all the necessary oscillator, control and logic circuitry. A current mode architecture provides fast transient response and good loop stability.

FEATURES
■ Wide Input Range: 5.5V to 60V
■ 1.5A Peak Switch Current
■ Small 16-Pin SSOP or Thermally Enhanced TSSOP Package
■ Saturating Switch Design: 0.2Ω
■ Peak Switch Current Maintained Over Full Duty Cycle Range
■ Constant 500kHz Switching Frequency
■ Effective Supply Current: 2.5mA
■ Shutdown Current: 25µA
■ 1.2V Feedback Reference (LT1956)
■ 5V Fixed Output (LT1956-5)
■ Easily Synchronizable
■ Cycle-by-Cycle Current Limiting

APPLICATIONS
■ High Voltage, Industrial and Automotive
■ Portable Computers
■ Battery-Powered Systems
■ Battery Chargers
■ Distributed Power Systems