Texas Instruments LP8862-Q1EVM, User Manual, Page: 4 / 22

User's Guide
SNVU478A – July 2015 – Revised October 2015
LP8862-Q1EVM Evaluation Module
1 Read This First
1.1 About this Manual
This user’s guide describes the module used to evaluate characteristics, operation, and use of the
LP8862-Q1 low-EMI, high-performance 2-channel LED driver for automotive lighting. This document
includes a schematic diagram, PCB layout, and bill of materials (BOM).
1.2 Related Documentation from Texas Instruments
LP8862-Q1 data sheet ( SNVSA75 ).
1.3 FCC Warning
This equipment is intended for use in a laboratory test environment only. It generates, uses, and can
radiate radio frequency energy and has not been tested for compliance with the limits of computing
devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable
protection against radio frequency interference. Operation of this equipment in other environments may
cause interference with radio communications, in which case the user, at their own expense, will be
required to take whatever measures may be required to correct this interference.
1.4 If You Need Assistance
Contact your local TI sales representative.
2 Introduction
The Texas Instruments LP8862-Q1EVM evaluation module (EVM) helps designers to evaluate the
operation and performance of the LP8862-Q1 device. The LP8862-Q1EVM uses the LP8862-Q1 to drive
up to 2 LED strings for LCD backlighting with high efficiency. Information about output voltage and current
ratings of the LP8862-Q1 can also be found in the device data sheet (
SNVSA75 ).
Power supply connection for the V
IN
and test points for each signal can be found on the evaluation board.
A separate LED board can be used as a load; it is also possible to connect LCD panel to the output
connectors.
For evaluation purposes, the EVM has been tested over a 4.5-V to 40-V input range. This voltage range is
within the recommended operating range for input voltage of the LP8862-Q1. Users are cautioned to
evaluate their specific operating conditions and choose components with the appropriate voltage ratings
before designing this circuitry into a final product.
4 LP8862-Q1EVM Evaluation Module SNVU478A – July 2015 – Revised October 2015
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