company blog about Supply TI LP8869QPWPRQ1 Highly Integrated 3-Channel 120mA Automotive LED Driver

Supply TI LP8869QPWPRQ1 Highly Integrated 3-Channel 120mA Automotive LED Driver

Description Of LP8869QPWPRQ1

The LP8869QPWPRQ1 is a highly integrated, low EMI, easy-to-use LED driver with a DC-DC converter that supports boost and SEPIC mode operation. The device is available with four or three high-precision current sinks that can be combined for higher current capability.

The DC-DC converters feature adaptive output voltage control based on the LED forward voltage. This feature minimises power consumption by adjusting the voltage to a low enough level under all conditions. To reduce EMI, the DC-DC supports spread spectrum of the switching frequency and external synchronisation of dedicated pins.The LP886x-Q1 uses a wide range of adjustable frequencies to avoid interference in sensitive frequency bands.

Features

• AEC-Q100 certified for automotive applications:
• Device temperature class 1: -40°C to +125°C, TA
• Supports functional safety
• Documentation is available to assist in the design of functionally safe systems
• 3-channel and 4-channel 120 mA current sinks
• Dimming ratios up to 10 000:1 at 100 Hz
• Current match 1% (typical)
• Up to 120 mA per channel LED string
• Outputs can be combined externally for higher current per string
• Integrated boost and SEPIC converter for LED string powering
• Input voltage operating range 4.5 V to 40 V
• Output voltages up to 45 V
• Integrated 3.3-A switching FET
• Switching frequency 300 kHz to 2.2 MHz
• Switching synchronous inputs
• Spread spectrum for reduced EMI
• Fault detection and protection
• Fault outputs
• Input voltage OVP, UVLO and OCP
• Booster Block SW OVP and Output OVP
• Open and short LED fault detection
• Power line FET control for battery bus protection
• Automatic LED current reduction via external temperature sensor
• Thermal shutdown

Applications

• Automotive infotainment systems
• Automotive dashboards
• Smart Mirrors
• Horizontal View Display (HUD)

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