05721

September 12, 2012

Rev: C

EP5348UI

©Enpirion 2012 all rights reserved, E&OE

2

www.enpirion.com

Ordering Information

Part Number

Package

EP5348UI

14-pin

μQFN T&R

EP5348UI-E

EP5348UI Evaluation Board

Pin Assignments (Top View)

Figure 2: EP5348UI Pin Out Diagram (Top View)

Pin Description

PIN

NAME

FUNCTION

1, 13,

14

NC(SW)

NO CONNECT – These pins are internally connected to the common switching node of the

internal MOSFETs. NC (SW) pins are not to be electrically connected to any external signal,

ground, or voltage. However, they must be soldered to the PCB. Failure to follow this

guideline may result in part malfunction or damage to the device.

2

PGND

Power ground. Connect this pin to the ground electrode of the Input and output filter

capacitors.

3, 8, 9

NC

NO CONNECT: These pins may already be connected inside the device. Therefore, they

cannot be electrically connected to each other or to any external signal, voltage, or ground.

They must however be soldered to the PCB. Failure to follow this guideline may result in

device damage.

4

VFB

Feedback pin for external voltage divider network.

5

AGND

Analog ground. This is the quiet ground for the internal control circuitry, and the ground

return for external feedback voltage divider

6, 7

VOUT

Regulated Output Voltage. Refer to application section for proper layout and decoupling.

10

ENABLE

Output Enable. Enable = logic high; Disable = logic low

11

AVIN

Input power supply for the controller circuitry. Connect to VIN at a quiet point.

12

PVIN

Input Voltage for the MOSFET switches.