IS32LT3952 - Lumissil

IS32LT3952 CONSTANT-CURRENT 1.5-AMPERE PWM DIMMABLE BUCK REGULATOR LED DRIVER

The IS32LT3952 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 1.5A for driving a single LED or multiple series connected LEDs. The external resistor, RISET, is used to set a constant LED out.

Features

 Wide input voltage supply from 4.5V to 38V - Withstand 40V load dump
 True average output current control
 1.5A maximum output over operating temperature range
 Cycle-by-cycle current limit
 Integrated high-side MOSFET switch
 Dimming via direct logic input or power supply voltage
 Internal control loop compensation
 Under-voltage lockout (UVLO) and thermal shutdown protection
 2μA low power shutdown
 Spread spectrum to optimize EMI
 Robust fault protection: - Pin-to-GND short - Component open/short faults - Adjacent pin-to-pin short - LED open/short - Thermal shutdown
 AEC-Q100 Q.