DESCRIPTION
The LT ®1680 is a high power, current mode switching power supply controller optimized for boost topologies. The IC drives N-channel MOSFET switches for DC/DC converters in applications up to 60V input. A high current gate drive output handles up to 10,000pF gate capacitance, enabling the construction of high power DC/DC converters. Current sense common mode range up to 60V allows current sensing to be referenced to the input supply, eliminating the need for sense blanking circuits.

FEATURES
■ High Voltage: Operation Up to 60V Max
■ High Current: N-Channel Drive Handles Up to 10,000pF Gate Capacitance
■ Programmable Average Current Limiting
■ 5V Reference Output with 10mA External Loading Capability
■ Fixed Frequency Current Mode Operation
■ Oscillator Synchronizable Up to 200kHz
■ Undervoltage Lockout with Hysteresis
■ Programmable Start Inhibit for Power Supply Sequencing and Protection
■ User Adjustable Slope Compensation

APPLICATIONS
■ High Power Single Board Systems
■ Distributed Power Converters
■ Industrial Control Systems
■ Lead-Acid Battery Back-Up Systems
■ Automotive and Heavy Equipment