Datasheet

SDA, SCL, and ADC jumpers

USB Interface Reset

GND Plane ConnectionUSBPower Jumper

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Getting Started

Figure 2. USB Interface Settings

5 Getting Started

Because of internal pullups, the LP3907 should become active as soon as the USB cable is plugged in.

To avoid damaging any parts, be sure to read the section describing how to power the board on Powering

the LP3907 Board.

For a quick start, make sure to short (connect) all jumpers except for JP8 & JP7 on the LP3907 Evaluation

board. Those jumpers short circuit the LDO output to GND for internal test purposes. Also please

disregard the 4 pin USB programming interface.

For a quick verification of a clean power up, start up the GUI, and the interface control at the bottom

should read “OK”. For more information on powering up the LP3907 through a charger adapter please

refer to the Powering the LP3907 Board section the LP3907 Dual High-Current Step-Down DC/DC and

Dual Linear Regulator with I2C-Compatible Interface (SNVS511) data sheet provided in the LP3907

Evaluation Kit CD.

SNVA233A–September 2007–Revised April 2013 AN-1619 Evaluation Kit for LP3907 — Programmable Power Management

Unit with 1

C Compatible Interface

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