AS3685C datasheet(16/22 Pages) AMSCO

16 / 22 page

AS3685C

Datasheet

www.austriamicrosystems.com/AS3685

(ptr)

1.1

15 - 21

Pinout and Packaging

9.1 DFN10 3x3mm

9.1.1

Pin Assignments DFN10 3x3mm

Figure

20 –Pin Assignments DFN10 3x3mm

9.1.2 Pin Descriptions DFN10 3x3mm

Table

9 – Pin Type Descriptions DFN10 3x3mm

Pin Type

Description

AI/O

Analog Pin

Digital Input

Supply Pin

Table

10 – Pin Descriptions DFN10 3x3mm

Pin Number

Pin Name

Type

Description

C2-

AI/O

Flying Capacitor 2 connection – connect 1

μF ceramic

capacitor CFLY2 between C2- and C2+

VBAT

Battery Supply Voltage

C1+

AI/O

Flying Capacitor 1 connection – connect 1

μF ceramic

capacitor CFLY1 between C1- and C1+

VCP

AI/O

Charge Pump Output voltage – connect flash LED anode

to this pin and add CVCP capacitor with 2.2

μF to VSS

SCL

Digital Control Signal two wire interface clock input

ISET

AI/O

Current Generator input pin – connect current set resistor

RISET between this pin and VSS (and optional RTXMASK)

SDA

DI/O

Digital Input/Output Control two wire interface data signal

C2+

AI/O

Flying Capacitor 2 connection – connect 1

μF ceramic

capacitor CFLY2 between C2- and C2+

ILED

AI/O

Current Source input pin – connect flash LED cathode to

this pin

C1-

AI/O

Flying capacitor 1 connection – connect 1

μF ceramic

capacitor CFLY1 between C1- and C1+

Exposed Pad

VSS

Ground Connection – a proper thermal connection with

several vias to the ground plane is recommended

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