IS32LT3957A Overview
Key Specifications
Description
The IS32LT3957A is a current mode PWM controller designed to drive a low side external NMOS FET for wide input/output voltage range and high LED current applications. An external resistor senses the high side output current of the LED string.
Key Features
- Wide high voltage input range: 5V to 75V
- Supports boost, buck-boost, SEPIC and buck topology
- ±3.5% output current accuracy over -40°C ~ +125°C temperature
- Adjustable operating frequency range of 100kHz~1MHz
- Programmable soft start to avoid inrush current
- Fixed under voltage lockout threshold
- EMI reduction capabilities
- Programmable spread spect
