IS31LT3954A Overview
The IS31LT3954A is a DC-to-DC switching converter that integrates an N-channel MOSFET to operate in a buck configuration. The device can operate from a wide input voltage between 4.5V and 38V and provides a constant current of up to 3A for driving a single LED or multiple series connected LEDs. The external resistor, RISET, is used to set a constant LED output current, while allowing the output voltage to be...
IS31LT3954A Key Features
- Wide input voltage supply from 4.5V to 38V
- Withstand 40V load dump
- True average output current control
- 3A maximum output over operating temperature
- Cycle-by-cycle current limit
- Integrated high-side MOSFET switch
- Dimming via direct logic input or power supply
- Internal control loop pensation
- Under-voltage lockout (UVLO) and thermal
- 2μA low power shutdown