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| 型号： | A8436EEJTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC PHOTOFLASH CHARGER 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： | 1.3mA |
| 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： | 1141 (CN2011-ZH PDF) |
| 其它名称： | 620-1098-6 |
A8436
Photoflash Capacitor Charger with IGBT Driver
Charging Cycles for a Completely Discharged Photoflash Capacitor
V BATT
C3
Figure 4A. Initial two cyles of charging
a completely discharged photoflash
capacitor. In these two cycles, off-time
(V SW low) is controlled by the internal
18 μ s timer (Timer mode). Note that, in the
C2
V SW
first cycle, I Primary starts near 0 A, but in
the second cycle, it starts at a higher level.
This indicates that the transformer core did
not reset during the first cycle.
C4
C1
I Primary
V OUT
t
V BATT
C3
V SW
Figure 4B. During the intermediate cycles,
the output voltage, V OUT , has increased.
I Secondary goes discontinuous, leading to
the ringing of V SW . The amplitude of the
ringing is not great enough, however,
C2
to pull V SW below 1.2 V, so the A8436
remains in Timer mode.
C4
I Primary
V OUT
C1
t
V BATT
C3
V SW
Figure 4C. The final cycle of Timer mode
is shown, followed by a series of cycles in
Fast Charging mode. V SW is able to ring
down below 1.2 V in every cycle as a result
C2
of increased V OUT , triggering the turn-on of
the main MOSFET switch.
C4
I Primary
V OUT
Symbol
C1
C2
C3
C4
t
Conditions
Parameter
V OUT
V SW
V BATT
I Primary
time
Parameter
V BATT
Units/Division
50 V
10 V
5V
500 mA
5 μ s
Value
V IN
C1
t
Allegro MicroSystems, Inc.
115 Northeast Cutoff
10
Worcester, Massachusetts 01615-0036 U.S.A.
1 . 508.853.5000; www.allegromicro.com
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相关代理商/技术参数 |
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| A8437 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Mobile Phone Xenon Photoflash Capacitor Charger |
| A84377-000 | 制造商:TE Connectivity 功能描述:TXR66SJ00-3616BI - Bulk |
| A8437ECGLT | 功能描述:IC PHOTOFLASH CAP CHARGER WLCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 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:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| A8437EEJTR-T | 功能描述:IC PHOTOFLASH CAP CHARGER 10TDFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 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:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| A8438 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Photoflash Capacitor Charger with IGBT Driver |
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