Data Sheet

ADP1660

Rev. 0 | Page 7 of 28

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

TOP VIEW

(BALL SIDE DOWN)

Not to Scale

PGND

SGND

VIN

SW

GPIO

EN

VOUT

STROBE

SDA

LED1

LED2

SCL

1

A

B

C

D

2

3

BALL A1

INDICATOR

Figure 4. Pin Configuration

Table 6. Pin Function Descriptions

Pin No.

Mnemonic

Description

A1

PGND

Power Ground.

A2

SGND

Signal Ground.

A3

VIN

Input Voltage for the Device. Connect an input bypass capacitor very close to this pin.

B1

SW

Boost Switch. Connect the power inductor between SW and the input capacitor.

B2

GPIO

This pin enables the part to function in torch mode or functions as a TxMASK input, depending on the value set

using Bits[5:4] in Register 0x02 (see Table 14). When this pin is configured as a TxMASK input, the flash current is

reduced to the TxMASK current programmed in Register 0x07 (for LED1) and Register 0x0A (for LED2).

B3

EN

is brought from low to high.

C1

VOUT

Boost Output. Connect an output bypass capacitor very close to this pin. This pin is the output for the 5 V

external voltage mode.

C2

STROBE

Strobe Signal Input. This pin synchronizes the flash pulse to the image capture. In most cases, this signal comes

directly from the image sensor.

C3

SDA

D1

LED1

Current Source for LED1. Connect this pin to the anode of flash LED1.

D2

LED2

Current Source for LED2. Connect this pin to the anode of flash LED2.

D3

SCL