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Product details

Parameters

Topology Boost with Current Sink, Sepic Vin (Min) (V) 4.5 Vin (Max) (V) 40 Vout (Min) (V) 6 Vout (Max) (V) 45 Iout (Max) (A) 0.48 Iq (Typ) (mA) 4.5 Switching frequency (Max) (kHz) 2200 Operating temperature range (C) -40 to 125 Features Adjustable Switch Frequency, Boost Sync, Current Derating, Enable/Shutdown, Fault Detection, Global dimming, Integrated Switch, LED Open Detection, LED Shorted Detection, Load Disconnect During Shutdown, Power-Line FET, Soft Start, Spread Spectrum, Synchronization Pin, Thermal Shutdown open-in-new Find other Automotive LED drivers

Package | Pins | Size

HTSSOP (PWP) 20 42 mm² 6.5 x 6.4 open-in-new Find other Automotive LED drivers

Features

  • AEC-Q100 Qualified for automotive applications:
    • Device temperature grade 1:
      –40°C to +125°C, TA
  • Functional safety capable
    • Documentation available to aid functional safety system design
  • 3-, 4-Channel 120-mA current sinks
    • High dimming ratio of 10 000:1 at 100 Hz
    • Current matching 1% (typical)
    • LED String current up to 120 mA per channel
    • Outputs can be combined externally for higher current per string
  • Integrated boost and SEPIC converter for LED string power
    • Input voltage operating range 4.5 V to 40 V
    • Output voltage up to 45 V
    • Integrated 3.3-A Switch FET
    • Switching frequency 300 kHz to 2.2 MHz
    • Switching synchronization input
    • Spread spectrum for lower EMI
  • Fault detection and protection
    • Fault output
    • Input voltage OVP, UVLO and OCP
    • Boost block SW OVP and output OVP
    • LED open and short fault detection
    • Power-Line FET control for battery bus protection
    • Automatic LED current reduction with external temperature sensor
    • Thermal shutdown

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open-in-new Find other Automotive LED drivers

Description

The LP8867-Q1, LP8869-Q1 is an automotive highly-integrated, low-EMI, easy-to-use LED driver with DC-DC converter. The DC-DC converter supports both boost and SEPIC mode operation. The device has four or three high-precision current sinks that can be combined for higher current capability.

The DC-DC converter has adaptive output voltage control based on the LED forward voltages. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. For EMI reduction DC-DC supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-range adjustable frequency allows the LP886x-Q1 to avoid disturbance for sensitive frequency band.

The input voltage range for the LP886x-Q1 is from 4.5 V to 40 V to support automotive start-stop and load dump condition. The LP886x-Q1 integrates extensive fault detection features.

open-in-new Find other Automotive LED drivers
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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 11
Type Title Date
* Datasheet LP8867-Q1, LP8869-Q1 Low EMI Automotive LED Driver with 4-, 3- Channels datasheet (Rev. B) Jan. 16, 2020
White paper Streamlining Functional Safety Certification in Automotive and Industrial Jun. 09, 2020
White paper 簡化汽車及工業領域的功 能安全認證 Jun. 09, 2020
White paper 자동차 및 산업 분야의 기능적 안전성 인증 간소화 Jun. 09, 2020
Functional safety information LP886x-Q1 Functional Safety FIT Rate and Failure Mode Distribution (Rev. A) Feb. 14, 2020
Application note Some Guidelines and Tips for the LED Driver Application Aug. 14, 2019
User guide LP8867-Q1 Evaluation Module User's Guide Dec. 09, 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
Technical articles Solving the automotive EMI issues in new cars with all the screens Sep. 10, 2014

Design & development

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

Hardware development

EVALUATION BOARD Download
79
Description
The LP8867Q1EVM helps designers to evaluate the characteristics, operation, and use of the LP8867/9-Q1 device, a high-performance LED driver for automotive lighting. The LP8867/9-Q1 device is an easy-to-useLED driver with integrated DC-DC converter. The device also has four/three 120-mA (...)
Features
  • Input voltage 4.5 to 40 V
  • Output voltage up to 45 V
  • Output current 120 mA/channel
  • Switching frequency 300 kHz to 2.2MHz
  • NTC sensor for LED current dimming

Design tools & simulation

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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 (...)
Features
  • 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

Package Pins Download
HTSSOP (PWP) 20 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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