IS32LT3961 Datasheet PDF - Lumissil CONSTANT-CURRENT 2-AMPERE PWM DIMMABLE BUCK REGULATOR LED DRIVER Specs

IS32LT3961 - CONSTANT-CURRENT 2-AMPERE PWM DIMMABLE BUCK REGULATOR LED DRIVER

Datasheet Summary

Description

The IS32LT3961 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 5V and 60V and provides a constant current of up to 2A for driving a single LED or multiple series connected LEDs.

Features

Wide input voltage supply from 5V to 60V.
High-side current sensing with LED string cathode connected directly to GND.
True average output current control with ±5% output current accuracy over operating temperature range of -40°C to +150°C.
2A maximum output over operating temperature range.
Cycle-by-cycle current limit.
Integrated high-side MOSFET switch.
PWM dimming capability.
Analog dimming for LED binning or thermal roll off protection.
Internal.

Datasheet Details

Part number	IS32LT3961
Manufacturer	Lumissil
File Size	944.01 KB
Description	CONSTANT-CURRENT 2-AMPERE PWM DIMMABLE BUCK REGULATOR LED DRIVER
Datasheet	IS32LT3961 Datasheet
Additional preview pages of the IS32LT3961 datasheet.

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Full PDF Text Transcription

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IS32LT3961 CONSTANT-CURRENT 2-AMPERE PWM DIMMABLE BUCK REGULATOR LED DRIVER WITH OUTPUT FAULT REPORTING December 2021 GENERAL DESCRIPTION The IS32LT3961 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 5V and 60V and provides a constant current of up to 2A for driving a single LED or multiple series connected LEDs. The external high-side resistor, RIS, is used to set a constant LED output current, while allowing the output voltage to be automatically adjusted for a variety of LED configurations. The IS32LT3961 operates in a fixed frequency mode during switching.

Published: Jul 12, 2025 |