Datasheet

2 Setup
2.1 Input/Output Connector Descriptions
2.2 Configuration Selection
Setup www.ti.com
This section describes how to properly use the TPS62110EVM-346.
U1--WLED Section
J1–LED VIN and LED WLED input voltage source connection. Positive connects to bottom three Vin
GND pins, and negative connects to upper three GND pins.
J2–LED VOUT and WLED output voltage connection
LED GND
JP1–SYNC PFM/PWM WLED high forces low-noise PWM mode, low enables power save PFM/PWM
mode. Also input for synchronization, if used.
JP2–EN WLED Enable pin, low = off and high = on; also open = on
J5–LBO/PG Low-battery output (LBO); low indicates LBI is below its threshold.
Power good (PG), low indicates output voltage is less than 98.4% of the normal
value.
U2--3.3-V Regulator Section
J 3–VIN and GND 3.3-V regulator input voltage source connection. Positive connects to bottom
three Vin pins, and negative connects to upper three GND pins.
J4--Vout and GND 3.3-V regulator output voltage connection. Positive connects to bottom three
VOUT pins, and negative connects to upper three GND pins.
JP4–SYNC PFM/PWM 3.3-V regulator high forces low-noise PWM mode, low enables power save
PFM/PWM mode. Also input for synchronization, if used.
JP3–EN 3.3-V regulator Enable pin, low = off and high = on. Also open = on.
J8–LBO/PG Low-battery output (LBO) pulled up to Vout; low indicates LBI is below its
threshold.
Power good (PG), low indicates output voltage is less than 98.4% of the normal
value.
Both sections of the EVM are designed to operate with an input voltage from 5 V to 17 V. Connect a
power supply to the appropriate section input terminals. EN jumpers must be installed in the desired ON or
OFF position, JP2 for the WLED or JP3 for the voltage regulator. The WLED is very bright and appropriate
precautions must be taken. The unit operates with the SYNC jumper PWM or PWM/PFM position; this
impacts efficiency. See the data sheet for additional information.
TPS62110EVM-346 4 SLVU254 – September 2008
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