Product Summary

The LTC1766 is a 200kHz monolithic buck switching regulator that accepts input voltages 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 control architecture delivers fast transient response and excellent loop stability. The LTC1766 is ideal for: (1)High Voltage, Industrial and Automotive; (2)Portable Computers; (3)Battery-Powered Systems; (4)Battery Chargers; (5)Distributed Power Systems.

Parametrics

LTC1766 absolute maximum ratings: (1)Input Voltage (VIN): 60V; (2)BOOST Pin Above SW: 35V; (3)BOOST Pin Voltage: 68V; (4)SYNC, SENSE Voltage (LT1766-5): 7V; (5)SHDN Voltage: 6V; (6)BIAS Pin Voltage: 30V; (7)FB Pin Voltage/Current (LT1766): 3.5V/2mA; (8)Storage Temperature Range: –65℃ to 150℃; (9)Lead Temperature (Soldering, 10 sec): 300℃.

Features

LTC1766 features: (1)Wide Input Range: 5.5V to 60V; (2)1.5A Peak Switch Current; (3)Constant 200kHz Switching Frequency; (4)Saturating Switch Design: 0.2Ω; (5)Peak Switch Current Rating Maintained Over; (6)Full Duty Cycle Range; (7)Low Effective Supply Current: 2.5mA; (8)Low ShutdowCurrent: 25μA; (9)1.2V Feedback Reference Voltage (LT1766); (10)5V Fixed Output (LT1766-5); (11)Easily Synchronizable; (12)Cycle-by-Cycle Current Limiting; (13)Small 16-PiSSOP and Thermally Enhanced TSSOP Packages.

Diagrams

LTC1766 circuit diagram

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