ADM7171

Data Sheet

Rev. C | Page 6 of 23

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

Figure 3. Pin Configuration

Table 6. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

VOUT

Regulated Output Voltage. Bypass this pin to GND with a 4.7 µF or greater capacitor.

2

VOUT

Regulated Output Voltage. This pin is internally connected to Pin 1.

3

SENSE

Sense Input. Connect this pin as close as possible to the load for best load regulation. Use an external

resistor divider to set the output voltage higher than the fixed output voltage.

4

SS

Soft Start. A 1 nF external capacitor connected to SS results in a 1.0 ms start-up time.

5

EN

Regulator Enable. Drive EN high to turn on the regulator; drive EN low to turn off the regulator. For

automatic startup, connect EN to VIN (Pin 7 or Pin 8).

6

GND

Ground.

7

VIN

Regulator Input Supply. Bypass this pin to GND with a 4.7 µF or greater capacitor.

8

VIN

Regulator Input Supply. This pin is internally connected to Pin 7.

9

EP

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

performance and is electrically connected to GND inside the package. Connect the exposed pad to the

ground plane on the board to ensure proper operation.

3

SENSE

4

SS

1

VOUT

2

VOUT

6 GND

5 EN

8 VIN

7 VIN

NOTES

1. THE EXPOSED PAD ENHANCES THERMAL PERFORMANCE

AND IS ELECTRICALLY CONNECTED TO GND INSIDE THE

PACKAGE. CONNECT THE EXPOSED PAD TO THE GROUND

PLANE ON THE BOARD TO ENSURE PROPER OPERATION.

ADM7171

TOP VIEW

(Not to Scale)