ADP320

Rev. 0 | Page 6 of 20

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

12

11

10

1

3

4

GND

GND

VIN3

9VIN3

EN1

VIN1/VIN2

2

VBIAS

VIN1/VIN2

TOP VIEW

(Not to Scale)

ADP320

NOTES

1. NC = NO CONNECT.

2. CONNECT EXPOSED PAD TO GROUND PLANE.

Figure 2. Pin Configuration

Table 5. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

EN1

Enable Input for Regulator 1. Drive EN1 high to turn on Regulator 1; drive it low to turn off Regulator 1. For

automatic startup, connect EN1 to VBIAS.

2

VBIAS

Input Voltage Bias Supply. Bypass VBIAS to GND with a 1 μF or greater capacitor.

3

VIN1/VIN2

Regulator Input Supply for Output Voltage 1 and Output Voltage 2. Bypass VIN1/VIN2 to GND with a 1 μF or

greater capacitor.

4

VIN1/VIN2

Regulator Input Supply for Output Voltage 1 and Output Voltage 2. Bypass VIN1/VIN2 to GND with a 1 μF or

greater capacitor.

5

VOUT1

Regulated Output Voltage 1. Connect a 1 μF or greater output capacitor between VOUT1 and GND.

6

VOUT2

Regulated Output Voltage 2. Connect a 1 μF or greater output capacitor between VOUT2 and GND.

7

VOUT3

Regulated Output Voltage 3. Connect a 1 μF or greater output capacitor between VOUT3 and GND.

8

NC

Not connected internally.

9

VIN3

Regulator Input Supply for Output Voltage 3. Bypass VIN3 to GND with a 1 μF or greater capacitor.

10

VIN3

Regulator Input Supply for Output Voltage 3. Bypass VIN3 to GND with a 1 μF or greater capacitor.

11

GND

Ground Pin.

12

GND

Ground Pin.

13

NC

Not connected internally.

14

NC

Not connected internally.

15

EN3

Enable Input for Regulator 3. Drive EN3 high to turn on Regulator 3; drive it low to turn off Regulator 3. For

automatic startup, connect EN3 to VBIAS.

16

EN2

Enable Input for Regulator 2. Drive EN1 high to turn on Regulator 2; drive it low to turn off Regulator 2. For

automatic startup, connect EN2 to VBIAS.

EP

EP

Exposed pad for enhanced thermal performance. Connect to copper ground plane.