参数资料
型号: A8439EEJTR-T
厂商: Allegro Microsystems Inc
文件页数: 8/15页
文件大小: 0K
描述: IC CHARGER PHOTO FLASH 10-MLP
标准包装: 1
应用: 照相机闪光灯电容器充电器
电流 - 电源: 1.5mA
电源电压: 3 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
供应商设备封装: 10-TDFN/MLP(3x3)
包装: 标准包装
产品目录页面: 1142 (CN2011-ZH PDF)
其它名称: 620-1203-6
A8439
Photoflash Capacitor Charger with IGBT Driver and Refresh
Performance Characteristics, continued
Tests performed using application circuit shown in figure 8
with I SWLIM set to 1.4A (Single rising edge on CHARGE pin), unless otherwise noted
8 8
Charge Time
V BIAS = 3.3 V, C OUT = 100 μ F
Connect VBATT to a separate power supply
90
Efficiency
V BATT = V BIAS , T A = 25°C
7 7
6 6
5 5
80
70
V BATT = 5.0 V
V BATT = 4.2 V
V BATT = 3.0 V
V V OUT = = 300 V
4 4
3 3
2 2
OUT
300 V
V
V OUT = = 320 V V
60
50
40
2.0
2.5
5.0
2
2.5
3 3.0 3.5 3.5 4 4.0 4.5 4.5 5
V
V BATT (V) (V)
5.5
5.5 6
6.0
100
150
200
V OUT (V)
250
300
350
Typical Switching Waveform
V BATT
C3
V OUT
Symbol
C1
Parameter
V OUT
Units/Division
50 V
C2
C3
C4
t
Conditions
V SW
V BATT
I Primary
time
Parameter
10 V
5V
500 mA
2 μ s
Value
C2
V SW
I Primary
V OUT
V BATT
300 V
V IN
C4
C1
IGBT Drive Timing Definition
t
TRIGGER
50%
50%
IGBTDRV
t Dr
10%
t r
90%
t Df
90%
t f
10%
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
7
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
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