LM2751SD-B

$1.74

Description：IC LED DRV RGLTR PWM 10WSON
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:be7b543f9cc4 Category: LED Drivers IC Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC LED DRV RGLTR PWM 10WSON
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：1
Voltage - Supply (Min)：2.8V
Voltage - Supply (Max)：5.5V
Voltage - Output：4.5V
Current - Output / Channel：150mA
Frequency：-
Dimming：PWM
Applications：Backlight
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：10-WFDFN Exposed Pad
Supplier Device Package：10-WSON (3x3)
Grade：-
Qualification：-

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LM2751SD-B

Overview

The LM2751SD-B is a regulated switched capacitor white LED driver IC manufactured by Texas Instruments. It operates within an input voltage range of 2.8V to 5.5V and supports charge pump topologies including 2x and 1.5x gain configurations. The device provides a maximum output current of 150mA with a typical quiescent current of 1mA. It functions at a constant switching frequency of 725kHz, delivering a regulated output voltage up to 4.5V. The component is housed in a 10-WSON package and is rated for operation between -40°C and +85°C.

Feature Summary

Regulated output capability using 2x or 1.5x switched capacitor topology
Low input and output voltage ripple characteristics
Constant frequency operation at 725kHz

Applications

LED backlighting systems
White LED lighting drivers
Portable electronic display illumination

Procurement Notes

Verify the specific suffix 'B' against the official datasheet to confirm pinout and functional variations compared to standard versions. Ensure the NOPB designation aligns with RoHS compliance requirements for your assembly process. Cross-reference the WSON-10 package dimensions with your PCB footprint library to prevent mechanical interference during surface mount placement.

Selection Notes

Select this component when a compact solution for driving white LEDs from a single-cell lithium battery or similar low-voltage source is required. The 2.8V minimum input voltage allows operation until battery depletion. Consider the 150mA output limit for LED string configuration and ensure the thermal performance of the exposed pad WSON package suits the ambient operating conditions.

Part Context

This part belongs to the LM2751 series of LED lighting driver ICs. It is distinct from the LM2750, which utilizes a boost converter topology rather than a switched capacitor approach. The LM2751 family focuses on applications requiring regulated voltage conversion without inductors, offering a smaller solution size compared to inductive DC-DC regulators.