Product details


Input voltage (type) DC/DC Topology Buck Vin (Min) (V) 6.5 Vin (Max) (V) 42 Iout (Max) (A) 5 Iq (Typ) (mA) 3 Features High Output Accuracy, Precision Dimming Control, Thermal Shutdown Operating temperature range (C) -40 to 125 Dimming method Analog, PWM open-in-new Find other Illumination LED drivers

Package | Pins | Size

HTSSOP (PWP) 24 34 mm² 7.7 x 4.4 open-in-new Find other Illumination LED drivers


  • Wide Input Voltage Range 6.5 V to 65 V
  • Two independent Buck LED Controllers
    • High Bandwidth, Quasi-Hysteretic Control
    • Adjustable High-Side Sense
    • Direct PWM Dimming Input
    • Cycle-by-Cycle Current Limit
  • SPI Communications Interface
    • Software configurable Set Points (8-bit)
    • Digital Calibration and Binning
    • Fault Monitoring and Reporting
  • Advanced, High Precision Dimming
    • 10,000:1 PWM Dimming Range
    • 255:1 Analog Dimming Range
    • High Frequency Shunt FET Dimming

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open-in-new Find other Illumination LED drivers


The TPS92518 family of parts are dual channel buck LED current controllers with a SPI communications interface. The serial communication interface provides a singular communication path for multichannel and platform lighting driver module (LDM) applications.

The TPS92518 uses a quasi-hysteretic control method that supports switching frequencies ranging from 1 kHz to 2 MHz. This control method enables superior, high frequency shunt FET dimming and also handles the demanding dynamic loads of adaptive LED matrix based headlamp systems.

Software programmable SPI set points (Precision Peak Current, Controlled Off-Time and Output Voltage Sense) enables designers to develop a single LED driver solution for multiple load configurations that can be quickly reconfigured for future LED driver design requirements.

The TPS92518 device has an input range up to 42 V. The TPS92518HV is a high-voltage option with an input range up to 65 V.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet TPS92518 65-V Dual Buck LED Controller with SPI Interface datasheet May 18, 2017
User guide TPS92518EVM Dual Buck Controller Evaluation Module (Rev. D) Oct. 15, 2020
Technical articles Dimming in switched-mode LED drivers Aug. 13, 2018
Technical articles Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical articles LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Technical articles Take better selfies with innovative LED flashes Nov. 18, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development


LEDSPIMCUEVM-879 is the MCU control board for the TPS92518 evaluation module (TPS92518EVM-878). This board is the companion board which enables software based controls using the TPS92518 demonstration kit software package provides a computer-based graphical user interface (GUI). This board allows (...)

  • MCU Control board for TPS92518EVM-878
  • MCU generates SPI communication and Enable and PWM dimming signals
  • Provides complete computer (via GUI) to LED driver control

The TPS92518EVM-878 features a two channel high-brightness LED current regulator based on the TPS92518 dual buck LED controller device. It is designed to operate with an input voltage from 6.5 V to 65 V. The EVM is set-up for default output currents of 550-mA/channel supporting any number of LEDs (...)

  • Supports 6.5-V to 65-V Input
  • Supports any number of LEDs with total LED voltage below input
  • Dual channel PWM, and digitally controlled analog dimming
  • SPI interface for dimming and frequency control and fault monitoring
  • GUI provides computer interface and design tool

Design tools & simulation

SLUM573B.ZIP (2834 KB) - PSpice Model
SLUM576B.ZIP (93 KB) - TINA-TI Spice Model
SLUM578A.TSC (181 KB) - TINA-TI Reference Design
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

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HTSSOP (PWP) 24 View options

Ordering & quality

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  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Qualification summary
  • Ongoing reliability monitoring

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