参数资料
型号: A8732EEETR-T
厂商: Allegro Microsystems Inc
文件页数: 4/21页
文件大小: 0K
描述: IC PHOTOFLASH CAP CHARGER 8DFN
标准包装: 1
应用: 照相机闪光灯电容器充电器,Xenon
电流 - 电源: 50µA
电源电压: 1.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-UFDFN 裸露焊盘
供应商设备封装: 8-DFN/MLP(2x2)
包装: 标准包装
其它名称: 620-1338-6
A8732
Ultra Small Mobile Phone Xenon Photoflash
Capacitor Charger with IGBT Driver
Functional Block Diagram
VBAT
V SW – V BAT
SW
ILIM
Reference
DCM
Detector
t off (max)
18 μ s
Control Logic
S Q
DMOS
V DS ref
OCP
H L
Triggered Timer
R
Q
VIN_DRV
t on (max)
18 μ s
Enable
Decoder
S
R
Q
Q
DONE
CHARGE
VIN_DRV
IGBT Driver
TRIG
Pin-out Diagram
Terminal List
GND
GATE
Number
Name
Function
DONE 1
TRIG 2
GATE 3
GND 4
PAD
8
7
6
5
CHARGE
VIN_DRV
VBAT
SW
1
2
3
4
ˉDˉ ˉOˉ ˉNˉ ˉEˉ
TRIG
GATE
GND
Open collector output, pulls low when output reaches target value and CHARGE is
high. Goes high during charging or whenever CHARGE is low.
IGBT trigger input.
IGBT gate drive output.
Ground connection.
5
SW
Drain connection of internal DMOS switch. Connect to transformer primary winding.
(Top View)
6
7
8
VBAT
VIN_DRV
CHARGE
PAD
Battery voltage.
Input voltage. Connect to 3 to 5.5 V bias supply. Decouple V IN voltage with 0.1 μ F
ceramic capacitor placed close to this pin.
Charge enable and current limit serial programming pin. Set this pin low to
shut down the chip.
Exposed pad for enhanced thermal dissipation. Connect to ground plane.
Allegro MicroSystems, LLC
115 Northeast Cutoff
3
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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