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Highly-integrated 4-channel 120-mA automotive LED driver

Availability: 5,137


Package | PIN: HTSSOP (PWP) | 20
Temp: Q (-40 to 125)
Package qty | Carrier: 2,000 | LARGE T&R
Custom reel may be available
Qty Price
1-99 $2.27
100-249 $1.97
250-999 $1.34
1,000+ $1.01


  • 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 systemdesign
  • 3-, 4-Channel 120-mA current sinks
    • High dimming ratio of 10 000:1 at 100Hz
    • Current matching 1% (typical)
    • LED String current up to120 mA per channel
    • Outputs can be combined externally for higher current perstring
  • Integrated boost and SEPIC converter for LED string power
    • Input voltage operating range 4.5 V to 40V
    • Output voltage up to 45 V
    • Integrated 3.3-A Switch FET
    • Switchingfrequency 300 kHz to 2.2 MHz
    • Switching synchronizationinput
    • Spread spectrum for lowerEMI
  • Fault detection and protection
    • Fault output
    • Input voltage OVP, UVLO and OCP
    • Boostblock SW OVP and output OVP
    • LED open and short faultdetection
    • Power-Line FET control for battery busprotection
    • Automatic LED current reduction with external temperaturesensor
    • Thermal shutdown

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Texas Instruments  LP8867QPWPRQ1

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 modeoperation. The device has four or three high-precision current sinks that can be combined forhigher current capability.

The DC-DC converter has adaptive output voltage control based on the LED forwardvoltages. This feature minimizes the power consumption by adjusting the voltage to the lowestsufficient level in all conditions. For EMI reduction DC-DC supports spread spectrum for switchingfrequency and an external synchronization with dedicated pin. A wide-range adjustable frequencyallows 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 supportautomotive start-stop and load dump condition. The LP886x-Q1 integrates extensivefault detection features.