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LP8860-Q1

ACTIVE

Automotive low-EMI high-performance 4-channel LED driver

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Data sheet

LP8860-Q1

ACTIVE
Data sheet Order now

Product details

Number of channels 4 Topology Boost with Current Sink Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 3 Vin (max) (V) 48 Vout (min) (V) 2 Vout (max) (V) 48 Iout (max) (A) 0.6 Iq (typ) (mA) 2.5 Switching frequency (max) (kHz) 2200 Features Adjustable Switch Frequency, Boost Sync, Fault Diagnostic, Global dimming, Hybrid Dimming/Phase Shift, I2C control, Spread Spectrum
Number of channels 4 Topology Boost with Current Sink Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 3 Vin (max) (V) 48 Vout (min) (V) 2 Vout (max) (V) 48 Iout (max) (A) 0.6 Iq (typ) (mA) 2.5 Switching frequency (max) (kHz) 2200 Features Adjustable Switch Frequency, Boost Sync, Fault Diagnostic, Global dimming, Hybrid Dimming/Phase Shift, I2C control, Spread Spectrum
HLQFP (VFP) 32 81 mm² 9 x 9
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
  • Input Voltage Operating Range 3 V to 48 V
  • Four High-Precision Current Sinks
    • Current Matching 0.5% (typical)
    • LED String Current up to 150 mA per Channel
    • Dimming Ratio > 13 000:1 With External PWM Brightness Control
    • 16-bit Dimming Control with SPI or I2C
    • Supports Display Mode (Global Dimming) and Cluster Mode (Independent Dimming)
  • Hybrid PWM and Current Dimming for Higher LED Drive Optical Efficiency
  • Synchronization for LED PWM Frequency
  • Boost Controller With Programmable Switching Frequency 100 kHz to 2.2 MHz and Spread-Spectrum Option for Lower EMI
  • Boost Synchronization Input
  • Power-Line FET Control for Inrush Current Protection and Standby Energy Saving
  • Automatic LED Current Reduction With External Temperature Sensor
  • Extensive Fault Diagnostics
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
  • Input Voltage Operating Range 3 V to 48 V
  • Four High-Precision Current Sinks
    • Current Matching 0.5% (typical)
    • LED String Current up to 150 mA per Channel
    • Dimming Ratio > 13 000:1 With External PWM Brightness Control
    • 16-bit Dimming Control with SPI or I2C
    • Supports Display Mode (Global Dimming) and Cluster Mode (Independent Dimming)
  • Hybrid PWM and Current Dimming for Higher LED Drive Optical Efficiency
  • Synchronization for LED PWM Frequency
  • Boost Controller With Programmable Switching Frequency 100 kHz to 2.2 MHz and Spread-Spectrum Option for Lower EMI
  • Boost Synchronization Input
  • Power-Line FET Control for Inrush Current Protection and Standby Energy Saving
  • Automatic LED Current Reduction With External Temperature Sensor
  • Extensive Fault Diagnostics

The LP8860-Q1 is an automotive high-efficiency LED driver with boost controller. It has 4 high-precision current sinks that can be controlled by a PWM input signal, an SPI or I2C master, or both.

The boost converter has adaptive output voltage control based on the headroom voltages of the LED current sinks. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the LP8860-Q1 to avoid disturbance for AM radio band.

The LP8860-Q1 supports built-in hybrid PWM and current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency. Phase-shift PWM reduces audible noise and output ripple.

The LP8860-Q1 is an automotive high-efficiency LED driver with boost controller. It has 4 high-precision current sinks that can be controlled by a PWM input signal, an SPI or I2C master, or both.

The boost converter has adaptive output voltage control based on the headroom voltages of the LED current sinks. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the LP8860-Q1 to avoid disturbance for AM radio band.

The LP8860-Q1 supports built-in hybrid PWM and current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency. Phase-shift PWM reduces audible noise and output ripple.

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Technical documentation

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Type Title Date
* Data sheet LP8860-Q1 Low-EMI Automotive LED Driver With Four 150-mA Channels datasheet (Rev. G) PDF | HTML 31 Oct 2017
Application note Selecting the Correct LP8860-Q1 EEPROM Version (Rev. D) PDF | HTML 04 Sep 2020
Application note Some Guidelines and Tips for the LED Driver Application 14 Aug 2019
Application note LP8860-Q1 Boost Compensation Registers (Rev. A) 12 Aug 2019
Application note LP8860-Q1 Electrical Overstress Analysis and Recommendation 07 Aug 2018
Application note Automotive Cold Crank Operation with LP8860-Q1 04 Apr 2018
Application note Using the LP8860-Q1 for Low EMI Automotive Designs 15 Feb 2018
White paper Powering automotive displays to create interactive driving experiences 21 Dec 2017
Application note LP8860-Q1 End-of-Line Programming guide of EEPROM 14 Dec 2017
Application note PCB Layout Guideline for Automotive LED Drivers 07 Apr 2017
EVM User's guide LP8860-Q1EVM User's Guide (Rev. A) 12 Jun 2014

Design & development

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

Driver or library

LP8860SW-LINUX — Linux Driver for LP8860-Q1

The Linux driver supports the LP8860 4-Channel LED Driver. The Linux driver supports communication through the I2C bus and interfaces with the LED sub-system.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • lp8860

 

Linux Source Files

The files (...)

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GUI for evaluation module (EVM)

SNVC156 — LP8860EVM GUI

Supported products & hardware

Supported products & hardware

Products
Automotive LED drivers
LP8860-Q1 — Automotive low-EMI high-performance 4-channel LED driver
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Reference designs

TIDA-00169 — Automotive TFT LCD Display Solution

This reference design implements a video over LVDS solution for automotive infotainment applications.It highlights the support of multi-touch with haptic feedback, LCD backlight control, and ambient light sensing, without the introduction of dedicated support lines back to the host processor. This (...)
Design guide: PDF
Schematic: PDF
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