LM27952SD

$1.52

Description：IC LED DRV RGLTR PWM 30MA 14WSON
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:325776ba9c18 Category: LED Drivers IC Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC LED DRV RGLTR PWM 30MA 14WSON
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
Type：DC DC Regulator
Topology：Switched Capacitor (Charge Pump)
Internal Switch(s)：Yes
Number of Outputs：4
Voltage - Supply (Min)：3V
Voltage - Supply (Max)：5.5V
Voltage - Output：2.5V ~ 3.9V
Current - Output / Channel：30mA
Frequency：750kHz
Dimming：PWM
Applications：Backlight
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：14-WFDFN Exposed Pad
Supplier Device Package：14-WSON (4x3)
Grade：-
Qualification：-

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LM27952SD

Overview

The LM27952SD is a discontinued White LED adaptive switched capacitor current driver from Texas Instruments. It features four output channels with a regulated output voltage range of 2.5V to 3.9V and an output current of 30mA per channel. The device operates on a 3V to 5.5V supply voltage at a switching frequency of 750kHz. Packaged in a 14-WFDFN (WSON) case, it supports PWM dimming and functions within an operating temperature range of -40°C to 85°C.

Feature Summary

Adaptive 1.5X/1X switched capacitor topology for efficient white LED driving
Four independent regulated output channels for backlight applications
Direct PWM dimming capability for brightness control

Applications

LCD panel backlighting systems
Portable electronic device illumination
White LED lighting modules

Procurement Notes

Verify component status carefully as the LM27952SD is officially discontinued by Texas Instruments. Sourcing should prioritize the direct replacement part number LM27952SD/NOPB to ensure RoHS compliance and availability. Confirm package integrity and authenticity through authorized distributors before integration into production designs.

Selection Notes

Select this component for designs requiring a compact, multi-channel LED driver solution. The 14-WSON package suits space-constrained PCB layouts. Ensure input voltage remains between 3V and 5.5V. Consider the LM27952SD/NOPB variant if environmental compliance is required, as the original SD suffix may not meet current standards.

Part Context

Part of the LM27952 series of LED lighting drivers designed for portable applications. The series utilizes switched capacitor technology to drive white LEDs efficiently. This specific model represents an earlier iteration now superseded by the NOPB version, which maintains identical electrical characteristics while adhering to modern manufacturing regulations.