LP8543SQX/NOPB

$1.05

Description：IC LED DRV RGLTR PWM 60MA 24WQFN
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR)

SKU:beb21d146b5d Category: LED Drivers IC Brand: Texas Instruments

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Product introduction

LP8543SQX/NOPB is listed in the LED Driver IC range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC LED DRV RGLTR PWM 60MA 24WQFN. Review the specifications below when checking this part for your BOM.

LED Driver IC specifications for LP8543SQX/NOPB

Description：IC LED DRV RGLTR PWM 60MA 24WQFN
Series：-
Mfr：Texas Instruments
Package：Tape & Reel (TR)
Type：DC DC Regulator
Topology：Step-Up (Boost)
Internal Switch(s)：Yes
Number of Outputs：7
Voltage - Supply (Min)：5.5V
Voltage - Supply (Max)：22V
Voltage - Output：40V
Current - Output / Channel：60mA
Frequency：625kHz ~ 1.25MHz
Dimming：PWM
Applications：Backlight
Operating Temperature：-30°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：24-WFQFN Exposed Pad
Supplier Device Package：24-WQFN (4x4)
Grade：-
Qualification：-

LED Driver IC datasheet and documents for LP8543SQX/NOPB

LP8543SQX/NOPB

LED Driver IC Overview

The LP8543SQX/NOPB is a Texas Instruments LED lighting driver IC featuring seven independent output channels. It utilizes a boost topology with an internal switch, supporting input voltages from 5.5 V to 22 V and delivering up to 60 mA per channel. The device operates at switching frequencies between 625 kHz and 1.25 MHz, generating output voltages up to 40 V. Controlled via I2C/SMBus and PWM interfaces, it is housed in a 24-WQFN package and functions within a temperature range of -30°C to +85°C.

LED Driver IC Feature Summary

Integrates seven independent regulated current outputs for multi-string LED applications
Supports digital control through SMBus/I2C interface for configuration and dimming
Includes hardware PWM dimming capability for brightness adjustment
Features integrated power switch and protection mechanisms

LED Driver IC Applications

LED backlighting systems
General LED illumination drivers

LED Driver IC Procurement Notes

Verify the specific suffix 'X' against official Texas Instruments documentation to confirm tape-and-reel packaging status, as standard listings often reference the 'SQ' variant. Ensure the component meets RoHS3 compliance requirements for your assembly process. Cross-reference the datasheet revision history to validate electrical parameters before finalizing procurement specifications.

LED Driver IC Selection Notes

Select this component when designing circuits requiring seven independently controlled LED strings driven by a single boost converter. It is suitable for applications needing precise digital regulation via I2C alongside hardware PWM dimming. Consider the 24-WQFN thermal performance and the 5.5 V to 22 V input voltage window relative to your system power supply constraints.

LED Driver IC Part Context

This part belongs to the LP8543 family of LED drivers from Texas Instruments. It is functionally related to variants such as the LP8543SQE/NOPB, which shares similar core capabilities but may differ in packaging or specific ordering suffixes. The series is designed for high-efficiency LED lighting solutions requiring multiple regulated outputs.