LM27953TLX/NOPB

$1.19

Description：IC LED DRV RGLTR PWM 18DSBGA
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR)

SKU:22299910dcec Category: LED Drivers IC Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC LED DRV RGLTR PWM 18DSBGA
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR)
Type：DC DC Regulator
Topology：Switched Capacitor (Charge Pump)
Internal Switch(s)：Yes
Number of Outputs：4
Voltage - Supply (Min)：2.7V
Voltage - Supply (Max)：5.5V
Voltage - Output：-
Current - Output / Channel：20mA
Frequency：500kHz
Dimming：PWM
Applications：Backlight
Operating Temperature：-30°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：18-WFBGA
Supplier Device Package：18-DSBGA
Grade：-
Qualification：-

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LM27953TLX/NOPB

Overview

The LM27953TLX/NOPB is a white LED driver IC featuring four independent LED current sinks and an integrated 3/2x switched capacitor boost converter. Designed for portable applications, it operates from a single-cell lithium-ion battery supply ranging from 2.7V to 5.5V. The device supports PWM dimming control and includes internal switches within its charge pump topology. It is housed in an 18-DSBGA package suitable for space-constrained designs.

Feature Summary

Integrates a 3/2x switched capacitor boost converter with four regulated LED current sinks
Supports PWM dimming for precise brightness control
Operates directly from a single-cell lithium-ion battery source

Applications

Mobile phone backlighting
Portable media player displays
Handheld gaming devices

Procurement Notes

Verify the specific suffix TLX indicates tape and reel packaging when ordering. Confirm NOPB designation ensures lead-free and RoHS compliance. Cross-reference the full part number with Texas Instruments official documentation to ensure compatibility with your board design and thermal requirements before finalizing procurement.

Selection Notes

Select this component when designing systems requiring four independently controlled LED channels driven by a single-cell battery. The integrated charge pump eliminates external inductors, simplifying layout. Ensure the application requires PWM dimming capabilities and fits within the 18-DSBGA footprint constraints typical of ultra-thin mobile devices.

Part Context

This part belongs to the LM2795x family of LED drivers from Texas Instruments. It shares functional similarities with the LM27951 and LM27956 but differs in output count and boost ratio. The LM27953 specifically targets applications needing four sinks with a 3/2x voltage boost, distinguishing it from other variants in the series that may offer different sink counts or conversion topologies.