The LP8862-Q1 is an automotive high-efficiency, low-EMI, easy-to-use LED driver with integrated DC-DC converter. The DC-DC supports both boost and SEPIC modes of operation. The device has two high-precision current sinks that can provide high dimming ratio brightness control with a PWM input signal.
The boost/SEPIC converter has an adaptive output voltage control based on the LED current sink headroom voltages. This feature minimizes power consumption by adjusting the voltage to the lowest sufficient level in all conditions. DC-DC supports spread spectrum for switching frequency and an external synchronization with a dedicated pin. A wide-range adjustable frequency allows the LP8862-Q1 to avoid disturbance for AM radio band.
The input voltage range for the LP8862-Q1 is from 4.5 V to 40 V to support automotive stop/start and load dump conditions. The device supports PWM brightness dimming ratio of 10 000:1 for 100-Hz input PWM frequency. The LP8862-Q1 integrates extensive fault detection features. The device has an option to drive an external p-FET to disconnect the input supply from the system in the event of a fault. This feature also reduces inrush current and standby power consumption.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | LP8862-Q1 Low-EMI Automotive LED Driver With Two 160-mA Channels datasheet (Rev. D) | PDF | HTML | Jun 8, 2017 |
| Application note | Some Guidelines and Tips for the LED Driver Application | Aug 14, 2019 | ||
| White paper | Powering automotive displays to create interactive driving experiences | Dec 21, 2017 | ||
| Application note | PCB Layout Guideline for Automotive LED Drivers | Apr 7, 2017 |
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The LP8862Q1EVM evaluation module (EVM) helps designers evaluate the operation and performance of this device. The LP8862Q1EVM uses the LP8862-Q1 to drive up to 2 LED strings (up to 12 LEDs each, 24 LEDs together) for LCD backlighting with high efficiency. Information about output (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (PWP) | 20 | Ultra Librarian |
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