ADP1754/ADP1755

Data Sheet

Rev. E | Page 6 of 20

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

PIN 1

INDICATOR

1

VIN

2

VIN

3

VIN

4

EN

11 VOUT

12 VOUT

10 VOUT

9

SENSE

TOP VIEW

(Not to Scale)

ADP1754

NOTES

1. NC = NO CONNECT.

2. THE EXPOSED PAD ON THE BOTTOM OF THE LFCSP ENHANCES

THERMAL PERFORMANCE AND IS ELECTRICALLY CONNECTED TO GND

INSIDE THE PACKAGE. IT IS RECOMMENDED THAT THE EXPOSED PAD

BE CONNECTED TO THE GROUND PLANE ON THE BOARD.

PIN 1

INDICATOR

1

VIN

2

VIN

3

VIN

4

EN

11 VOUT

12 VOUT

10 VOUT

9

ADJ

TOP VIEW

(Not to Scale)

ADP1755

NOTES

1. NC = NO CONNECT.

2. THE EXPOSED PAD ON THE BOTTOM OF THE LFCSP ENHANCES

THERMAL PERFORMANCE AND IS ELECTRICALLY CONNECTED TO GND

INSIDE THE PACKAGE. IT IS RECOMMENDED THAT THE EXPOSED PAD

BE CONNECTED TO THE GROUND PLANE ON THE BOARD.

Figure 3. ADP1754 Pin Configuration

Figure 4. ADP1755 Pin Configuration

Table 5. Pin Function Descriptions

ADP1754

Pin No.

ADP1755

Pin No.

Mnemonic

Description

1, 2, 3, 15,

16

1, 2, 3, 15,

16

VIN

Regulator Input Supply. Bypass VIN to GND with a 4.7 µF or greater capacitor. Note that all five

VIN pins must be connected to the source.

4

4

EN

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

automatic startup, connect EN to VIN.

5

5

PG

Power Good. This open-drain output requires an external pull-up resistor to VIN. If the part is in

shutdown mode, current-limit mode, thermal shutdown, or if it falls below 90% of the nominal

output voltage, PG immediately transitions low.

6

6

GND

Ground.

7

7

SS

Soft Start. A capacitor connected to this pin determines the soft start time.

8

8

NC

Not Connected. No internal connection.

9

N/A

SENSE

Sense. This pin measures the actual output voltage at the load and feeds it to the error

amplifier. Connect SENSE as close as possible to the load to minimize the effect of IR drop

between the regulator output and the load.

N/A

9

ADJ

Adjust. A resistor divider from VOUT to ADJ sets the output voltage.

10, 11, 12,

13, 14

10, 11, 12,

13, 14

VOUT

Regulated Output Voltage. Bypass VOUT to GND with a 4.7 µF or greater capacitor. Note that all

five VOUT pins must be connected to the load.

17 (EPAD)

17 (EPAD)

Exposed

paddle

(EPAD)

The exposed pad on the bottom of the LFCSP package enhances thermal performance and is

electrically connected to GND inside the package. It is recommended that the exposed pad be

connected to the ground plane on the board.