EP3003

Rev.03

Pin Description

PIN

NAME

FUNCTION

1

Output Voltage Feedback Pin. An internal resistive divider divides the output voltage

down for comparison to the internal reference voltage. Nominal voltage for this pin is

0.6V.

2

RUN1

Regulator 1 Enable control input. Forcing this pin to VIN enables regulator 1, while

forcing it to GND causes regulator 1 to shut down. In shutdown, all functions are

disabled drawing <1µA supply current. Do not leave RUN floating.

3

Main Power Supply. Must be closely decoupled to GND with a ceramic capacitor.

4

SW1

Regulator 1 Power Switch Output. Switch Node Connection to the

Inductor. This pin swings from VIN to GND.

5

GND

Ground

6

Mode/Sync

Combination of Mode Selection and Oscillator Synchronization. This pin controls the

skipping mode is selected, respectively. Do not float this pin. The oscillation frequency

can be synchronized to an external oscillator applied to this pin and pulse skipping mode

is automatically selected. ( Current version “Burst Mode” is not supported )

7

SW2

Regulator 2 Power Switch Output. Switch Node Connection to the Inductor. This pin

8

/POR

Power-On Reset. This common-drain logic output is pulled to GND when the output

voltage is not within ±8.5% of regulation and goes high after 175ms when both channels

are within regulation.

9

RUN2

forcing it to GND causes regulator 2 to shut down.

10

11

Power

Ground

electrical ground on PCB.

7