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Automotive display LED-backlight driver with six 200-mA channels

Availability: 1,431


Package | PIN: HTSSOP (DCP) | 38
Temp: Q (-40 to 125)
Package qty | Carrier: 2,000 | LARGE T&R
Qty Price
1-99 $3.20
100-249 $2.80
250-999 $1.97
1,000+ $1.58


  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1:
      –40°C to +125°C, TA
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Input voltage operating range 3 V to 48 V
  • Six high-precision current sinks
    • Up to 200-mA DCcurrent for each current sink
    • Current matching 1% (typical)
    • Dimming ratio 32 000:1 using 152-Hz LED output PWMfrequency
    • Up to 16-bit LED dimming resolution with I2C, or PWMinput
    • 8 Configurable LED stringsconfiguration
  • Auto-phase shift PWM dimming
  • Up to 48-V VOUT boost or SEPIC DC/DC controller
    • Switching frequency 100 kHz to 2.2 MHz
    • Boost spreadspectrum for reduced EMI
    • Boost sync input to set boostswitching frequency from an external clock
    • Output voltage automaticallydischarged when boost is disabled
  • Extensive fault diagnostics

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Texas Instruments  PLP8866QDCPRQ1

The LP8866-Q1 is an automotivehigh-efficiency LED driver with boost controller. The Six high-precision current sinks support phase shifting that isautomatically adjusted based on the number of channels in use. LED brightness can be controlledglobally through the I²C interface or PWM input.

The boost controller has adaptive output voltage control based on the headroom voltagesof the LED current sinks. This feature minimizes the power consumption by adjusting the boostvoltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allowsthe LP8866-Q1 to avoid disturbance forAM radio band.

The LP8866-Q1 supports built-in hybridPWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increasesthe total optical efficiency.