ADP5501

Rev. 0 | Page 6 of 28

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

PIN 1

INDICATOR

1

PGND

2

SW

3

INT

4

SDA

5

SCL

6

NC

15 RST

16 VDDIO

17 CMP_IN

18 GND

14 LED0

13 LED2

TOP VIEW

(Not to Scale)

ADP5501

NOTES

1. NC = NO CONNECT.

2. EXPOSED PAD MUST BE CONNECTED

TO GROUND.

Figure 3. Pin Configuration

Table 4. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

PGND

Power Switch Output to Ground.

2

SW

Power Switch Input.

3

INT

Processor Interrupt, Active Low, Open Drain. INT should be pulled up to VDDIO.

4

SDA

5

SCL

6

NC

No Connect.

7

NC

No Connect.

8

NC

No Connect.

9

NC

No Connect.

10

NC

No Connect.

11

NC

No Connect.

12

LED1

LED 1 Current Sink. LED1 can be used with LED0 and LED2 as RGB.

13

LED2

LED 2 Current Sink. LED2 can be used with LED1 and LED0 as RGB.

14

LED0

LED 0 Current Sink. LED0 can be used with LED1 and LED2 as RGB.

15

RST

Reset Input, Active Low. This input signal resets the device to the power-up default conditions. It must be driven

low for a minimum of 75 μs (typical) to be valid.

16

VDDIO

Supply Voltage for the I/O Pin. The output pin can be 1.8 V to 3.3 V or VBAT, whichever is smaller. If VDDIO = 0,

the device goes into full shutdown mode.

17

CMP_IN

Input for Ambient Light Sensing.

18

GND

Ground.

19

GND

Ground.

20

CAP_OUT

Capacitor for Internal 2.7 V LDO. A 1 μF capacitor must be connected between this pin and ground. Do not use

this pin to supply external loads.

21

VBAT

Main Supply Voltage for the IC (2.7 V to 5.5 V).

22

BST

Overvoltage Monitor Input for the Boost Converter.

23

BL_SNK

Backlight Current Sink.

24

GND

Ground.

EPAD

The exposed pad must be connected to ground.