Datasheet

GND plane connection
USBPower Jumper
USB Interface Reset
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Using the Evaluation Hardware
IC.
Figure 10. USB Interface Settings
7.2 Enable Configurations Through the 20 Pin Header
The following diagram shows how to enable or disable different regulators by jumpering pins in the 20 pin
header.
One practical use of grounding the enable pins of the regulators is to signal a System Delay Sequence
(EN_T). One practical use of grounding the enable pins of the regulators is to signal a System Delay
Sequence (EN_T). Powering the chip through EN_T assertion is described in more detail in the “Power
On” section of the data sheet.
Figure 11. Top View of Header Connection
9
SNVA233ASeptember 2007Revised April 2013 AN-1619 Evaluation Kit for LP3907 — Programmable Power Management
Unit with 1
2
C Compatible Interface
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