IS31LT3954A-GRLS4-TR

$1.93

Description：IC LED DRIVER RGLTR PWM 3A 8SOP
Series：-
Mfr：Lumissil Microsystems
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:4c28a2ab013c Category: LED Drivers IC Brand: Lumissil Microsystems

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Product introduction

Product Detailed Parameters

Description：IC LED DRIVER RGLTR PWM 3A 8SOP
Series：-
Mfr：Lumissil Microsystems
Package：Tape & Reel (TR),Cut Tape (CT)
Type：DC DC Regulator
Topology：Step-Down (Buck)
Internal Switch(s)：Yes
Number of Outputs：1
Voltage - Supply (Min)：4.5V
Voltage - Supply (Max)：38V
Voltage - Output：-
Current - Output / Channel：3A
Frequency：-
Dimming：PWM
Applications：LED Lighting
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
Supplier Device Package：8-SOP-EP
Grade：-
Qualification：-

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IS31LT3954A-GRLS4-TR

Overview

The IS31LT3954A-GRLS4-TR is a monolithic LED driver regulator from Lumissil Microsystems, designed for general lighting applications. It integrates a power MOSFET and operates as a step-down (buck) DC-DC converter with a single output capable of delivering up to 3A. The device supports PWM dimming control and features an 8-SOP-EP surface-mount package. It functions within an operating temperature range of -40°C to 125°C (TA), providing built-in protections for extended-life operation in commercial, residential, and automotive markets.

Feature Summary

Integrates a power MOSFET for compact design
Supports PWM dimming control
Built-in protections for reliability

Applications

General lighting applications
Commercial lighting systems
Residential lighting fixtures
Automotive lighting markets

Procurement Notes

Verify the specific suffix GRLS4 against the manufacturer's official datasheet to confirm pinout and thermal pad configuration. Ensure the ordering part number matches the exact voltage and current ratings required for the target application. Cross-reference the RoHS status and lead-free designation with the latest component documentation before procurement.

Selection Notes

Select this component for designs requiring a buck topology with integrated power switching. Consider the 3A output capacity and 8-SOP-EP package for space-constrained PCB layouts. Evaluate the PWM dimming interface compatibility with the system controller. Verify that the -40°C to 125°C operating range meets the environmental requirements of the end-use product.

Part Context

This part belongs to the Lumissil H-BLED Drivers portfolio, which addresses a range of general lighting applications. The series offers both monolithic-based solutions with integrated power MOSFETs and controller-based solutions with external MOSFETs. These packages provide flexibility in design and are intended for use in commercial, residential, and automotive markets.