Product
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LP8868X-Q1
  • LP8868X-Q1
  • LP8868X-Q1
  • LP8868X-Q1

LP8868X-Q1

ACTIVE

Automotive, 65-V 4-A boost LED driver with flexible dimming option and spread spectrum

Texas Instruments LP8868X-Q1 Product Info

1 April 2026 5

Parameters

Number of channels

1

Topology

Current Sink

Rating

Automotive

Operating temperature range (°C)

-40 to 125

Vin (min) (V)

4.5

Vin (max) (V)

65

Vout (max) (V)

63

Iout (max) (A)

4

Iq (typ) (mA)

0.8

Switching frequency (max) (kHz)

2200

Features

Cycle-by-cycle over-current protection, Fault output, Integrated Switching FET, LED Open Detection, LED Short Detection, Programable Switching Frequency, Spread Spectrum, Thermal Foldback, Thermal shutdown

Package

HVSSOP (DGN)-12-19.6 mm² 4 x 4.9

Features

  • AEC-Q100 Qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Integrated MOSFET for buck, buck-boost and boost topology
    • Wide input voltage: 4.5V to 65V
    • Integrated 5.2A and 150mΩ MOSFET
    • Switching frequency 100kHz to 2.2MHz
    • Spread spectrum for lower EMI
  • High precision power FET dimming
    • Up to 4A output current in buck topology
    • Analog dimming (dimming ratio 256 :1)
    • Fast PWM dimming (150ns pulse width)
    • Hybrid and flexible dimming
  • Full protection features:
    • Fault output
    • LED open and short protection
    • Cycle-by-cycle current limit
    • Switching FET failure protection
    • Thermal shutdown
    • Configurable thermal foldback curve
  • AEC-Q100 Qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Integrated MOSFET for buck, buck-boost and boost topology
    • Wide input voltage: 4.5V to 65V
    • Integrated 5.2A and 150mΩ MOSFET
    • Switching frequency 100kHz to 2.2MHz
    • Spread spectrum for lower EMI
  • High precision power FET dimming
    • Up to 4A output current in buck topology
    • Analog dimming (dimming ratio 256 :1)
    • Fast PWM dimming (150ns pulse width)
    • Hybrid and flexible dimming
  • Full protection features:
    • Fault output
    • LED open and short protection
    • Cycle-by-cycle current limit
    • Switching FET failure protection
    • Thermal shutdown
    • Configurable thermal foldback curve

Description

The LP8868-Q1 family is a non-synchronous multi-topology solution with 4.5V to 65V wide input range. By integrating the low-side NMOS switch, the device is capable of driving LEDs with high power density and high efficiency. The family also supports common cathode connection and single layer PCB design. The switching frequency is configurable from 100kHz to 2.2MHz with an optional spread spectrum feature for better EMI performance.

The LP8868-Q1 family supports four dimming options, including analog, PWM, hybrid and flexible dimming. Each dimming method can be configured through the PWM and ADIM input pins by means of simple high and low signals. The family adopts an adaptive off-time current mode control along with smart and accurate sampling to enable inductive fast dimming (IFD) and achieve high dimming accuracy.

The LP8868-Q1 family also provides multiple systematic protections, including LED open and short, sense resistor open and short, configurable thermal foldback and thermal shutdown. Fault output will send out acknowledge signals as soon as any fault condition is detected.

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