AS3649 datasheet(2/39 Pages) AMSCO

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AS3649

Datasheet - Pin Assignm ents

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1.0-2

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4 Pin Assignments

Figure 2. Pin Assignments (Top View)

4.1 Pin Description

Table 1. Pin Description for AS3649

Pin Number

Pin Name

Description

PGND2

Power ground; make a short connection between all GND balls

PGND1

Power ground; make a short connection between all GND balls

VIN

Positive supply voltage input - connect to supply and make a short connection to input capacitor

CVIN and to coil LDCDC

Hardware reset input; an active low signal resets the registers of AS3649 and enters shutdown

(and I

2C lines SDA and SCL are in high-Z), active high allows to operate the device

SW2

DCDC converter switching node - make a short connection to SW1 / coil LDCDC

SW1

DCDC converter switching node - make a short connection to SW2 / coil LDCDC

NTC

LED temperature sensor input (NTC) for LED overtemperature protection

TXMASK/TORCH

Function 1: Connect to RF power amplifier enable signal - reduces currents during flash to avoid

a system shutdown due to parallel operation of the RF PA and the flash driver

Function 2: Operate torch current level without using the I

2C interface to operate the torch

without need to start a camera processor (if the I

2C is connected to the camera processor

VOUT2

DCDC converter output capacitor - make a short connection to CVOUT / VOUT1

VOUT1

DCDC converter output capacitor - make a short connection to CVOUT / VOUT2

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AS3649

AS3649 датащи(PDF) 2 Page - ams AG