LT1768 Overview
Key Features
- A unique Multimode Dimming scheme* combines both linear and PWM control functions to maximize lamp life, efficiency, and dimming range
- Accurate maximum and minimum lamp currents can be easily set
- The LT1768 can detect and protect against lamp failures and overvoltage start-up conditions
- It is designed to provide maximum flexibility with a minimum number of external components
- The LT1768 is a current mode PWM controller with a 1.5A MOSFET driver for high power applications
- It contains a 350kHz oscillator, 5V reference, and a current sense comparator with a 100mV threshold
- It operates from an 8V to 24V input voltage
- The LT1768 also has undervoltage lockout, thermal limit, and a shutdown pin that reduces supply current to 65µA
- It is available in a small 16-lead SSOP package
- LTC and LT are registered trademarks of Linear Technology Corporation
