Product details


Number of channels (#) 4 Vin (Min) (V) 3 Vin (Max) (V) 48 Vout (Min) (V) 0 Vout (Max) (V) 48 Switching frequency (Max) (kHz) 2200 LED current per channel (mA) 200 Topology Boost, Current Sink Features Adjustable Switch Frequency, Analog Dimming, Analog/PWM Mixed Dimming, Direct PWM Dimming, Enable/Shutdown, Fault Detection, I2C Control, OVP, PWM Control, Programmable output current, Soft Start, Thermal Shutdown Operating temperature range (C) -40 to 125 open-in-new Find other Backlight LED drivers

Package | Pins | Size

VQFN (RHB) 32 25 mm² 5 x 5 open-in-new Find other Backlight LED drivers


  • Input voltage operating range 3 V to 48 V
  • Four high-precision current sinks
    • Up to 200-mA DC current for each current sink
    • Current matching 1% (typical)
    • Dimming ratio 32 000:1 using 152-Hz LED output PWM frequency
    • Up to 16-bit LED dimming resolution with I2C, or PWM input
    • 8 Configurable LED strings configuration
  • Auto-phase shift PWM dimming
  • 12-bit Analog dimming
  • Switching frequency 100 kHz to 2.2 MHz
  • Boost spread spectrum for reduced EMI
  • Boost sync input to set boost switching frequency from an external clock
  • Up to 48-V VOUT boost or SEPIC DC/DC controller
    • Switching frequency 100 kHz to 2.2 MHz
    • Boost spread spectrum for reduced EMI
    • Boost sync input to set boost switching frequency from an external clock
  • Extensive fault diagnostics
open-in-new Find other Backlight LED drivers


The TPS92390 is an automotive high-efficiency LED driver with boost controller. The Four high-precision current sinks support phase shifting that is automatically adjusted based on the number of channels in use. LED brightness can be controlled globally through the I²C interface or PWM input.

The boost controller has adaptive output voltage control based on the headroom voltages of the LED current sinks. This feature minimizes the power consumption by adjusting the boost voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the TPS92390 to avoid disturbance for AM radio band.

The TPS92390 supports built-in hybrid PWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.

open-in-new Find other Backlight LED drivers

Technical documentation

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Type Title Date
* Data sheet TPS92390 Boost/SEPIC High Dimming Performance LED Driver with Four 200-mA Channels datasheet Mar. 11, 2021
Technical article Overcoming challenges for backlight LED drivers in automotive display solutions Jul. 16, 2020
Technical article Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical article LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016
Technical article Take better selfies with innovative LED flashes Nov. 18, 2014

Design & development

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Hardware development

document-generic User guide
The LP8864EVM helps designers to evaluate the characteristics, operation, and performance of the LP8864(S)-Q1 product a 4-channel high-efficiency LED driver for automotive display LED backlighting. The LP8864(S)-Q1 product integrates a boost or SEPIC controller and four high-precision current sinks (...)
  • Input voltage range 3 V to 48 V
  • Up to 48-V VOUT boost controller
  • Four high-precision current sinks
  • Supports built-in phase-shift PWM dimming, hybrid dimming, current dimming and direct PWM dimming mode
  • LED brightness controlled globally through I2C interface or PWM input
  • Extensive fault diagnostics

Design tools & simulation

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
  • (...)

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VQFN (RHB) 32 View options

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