参数资料
型号: A8732EEETR-T
厂商: Allegro Microsystems Inc
文件页数: 10/21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
Final Output Voltage versus Battery Voltage at Various ILIM
Transformer L PRIMARY = 12.8 μ H, N =10.25, V IN =3.6 V, at room temperature
328
327
ILIM15 (0.51A)
326
325
324
323
322
321
320
ILIM13 (0.65A)
ILIM11 (0.79A)
ILIM9 (0.93A)
ILIM7 (1.07A)
ILIM5 (1.22A)
ILIM3 (1.36A)
ILIM1 (1.50A)
1.5
2.0
2.5
3.0 3.5 4.0
Battery Voltage (V)
4.5
5.0
5.5
Note: Output voltage is sensed from the primary side winding when the switch turns off. This duration, t off , has
to be long enough (>200 ns) in order to obtain an accurate measurement. The value of t off depends on I SWlim ,
primary inductance, L Primary , and the turns ratio, N, as given by: t off = (I SWlim × L PRIMARY × N) / V OUT .
Final Output Voltage versus Secondary Side Conduction Time
at Various Battery Voltages
Transformer L PRIMARY = 12.8 μ H, N =10.25, V IN =3.6 V, at room temperature
328
327
326
V BAT (V)
325
5.0
4.2
324
3.6
323
322
321
320
2.2
150
200
250
300
350
400
450
500
550
600
650
t off (ns)
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
9
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