Datasheet > AS3649

AS3649

更新时间： 2022-02-26 13:33:21

品牌	Logo	应用领域
艾迈斯 - AMSCO		/
页数	文件大小	规格书
39页	3486K
描述
2500mA High Current LED Flash Driver

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AS3649 数据手册

AS3649

Datasheet - Pin Assignments

4 Pin Assignments

Figure 2. Pin Assignments (Top View)

AS3649

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4.1 Pin Description

Table 1. Pin Description for AS3649

Pin Number¹

Pin Name

Description

Power ground; make a short connection between all GND balls

PGND2

PGND1

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

CVIN and to coil LDCDC

VIN

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

(and I²C lines SDA and SCL are in high-Z), active high allows to operate the device

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

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

LED temperature sensor input (NTC) for LED overtemperature protection

SW2

SW1

NTC

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 I²C interface to operate the torch

without need to start a camera processor (if the I²C is connected to the camera processor

TXMASK/TORCH

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

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

VOUT2

VOUT1

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