Setup
6
SNVU564A – July 2017 – Revised August 2017
Copyright © 2017, Texas Instruments Incorporated
Using the BOOST-LP5569EVM Evaluation Module
Figure 5. White LED Jumper Settings
1.6
External LED Operation
For proper operation of the LP5569 device, ADDR_SEL, IOUT, JL1, JL2, JL3, JLED, and VINSEL must be
properly configured. The recommended settings, using shunts, are as follows:
•
ADDR_SEL: Shunt installed between pins 1 and 2 only.
•
IOUT: Shunt installed.
•
JL1: No shunt installed.
•
JL2: No shunt installed.
•
JL3: No shunt installed.
•
JLED: No shunt installed, external LED cathodes connected to JLED pins 11, 13, 15, 17, 19, 21, 23,
25, and 27 with LED anodes connected to either JLED pin 1 (VOUT) or pin 3 (VIN).
In this configuration, the LEDs are located on a separate board connected to JLED. Multiple LP5569-
EVMs can be stacked vertically to control up to 72 LEDs (8 LP5569EVMs) using a single MSP432
LaunchPad developmant kit.
1.7
EVM and MSP-EXP432P401R LaunchPad Development Kit Setup
The MSP-EXP432P401R LaunchPad jumpers should be set as shown in
.