Data Sheet

ADP2370/ADP2371

Rev. A | Page 7 of 32

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

ADP2370/ADP2371

TOP VIEW

(Not to

Scale)

3

EN

4

SYNC

1

VIN

NOTES

1. THE EXPOSED PAD ON THE BOTTOM OF THE PACKAGE ENHANCES

THE THERMAL PERFORMANCE AND IS ELECTRICALLY CONNECTED

TO GROUND INSIDE THE PACKAGE. THE EXPOSED PAD MUST BE

CONNECTED TO THE GROUND PLANE ON THE CIRCUIT BOARD

FOR PROPER OPERATION.

2

FSEL

6 PG

5 FB

8 PGND

7 SW

Figure 2. Pin Configuration

Table 5. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

VIN

Power Input.

2

FSEL

Frequency Select. High = 1.2 MHz, low = 600 kHz.

3

EN

Enable. Enable input with precision thresholds.

4

SYNC

Synchronize. This pin is used to synchronize the device to an external 600 kHz to 1.2 MHz clock or forces

PWM mode when it is held high. SYNC held low forces automatic PWM/PSM operation.

5

FB

Feedback. This pin provides feedback from the output.

6

PG

Power Good. PG is an open-drain output.

7

SW

Switch. This pin serves as the connection from the power MOSFETs to the inductor.

8

PGND

Power Ground.

EPAD

Exposed Pad. The exposed pad on the bottom of the package enhances the thermal performance and is

electrically connected to ground inside the package. The exposed pad must be connected to the ground

plane on the circuit board for proper operation.