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参数资料
| 型号： | A8739EEETR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 20/23页 |
| 文件大小： | 0K |
| 描述： | IC PHOTOFLASH CHARGER 8-DFN |
| 标准包装： | 1 |
| 应用： | 照相机闪光灯电容器充电器，Xenon |
| 电流 - 电源： | 2mA |
| 电源电压： | 2.3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-UFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN（2x2） |
| 包装： | 标准包装 |
| 其它名称： | 620-1365-6 |
A8739
Layout Guidelines
Ultra-Small Mobile Adjustable Xenon Photoflash
Capacitor Charger with IGBT Driver
Avoid placing any ground plane area underneath the transformer
Key to a good layout for the photoflash capacitor charger circuit
is to keep the parasitics minimized on the power switch loop
(transformer primary side) and the rectifier loop (secondary side).
Use short, thick traces for connections to the transformer primary
and SW pin. It is important that the ˉDˉˉ ˉOˉ ˉˉNˉ ˉEˉ signal trace and other
signal traces be routed away from the transformer and other
switching traces, in order to minimize noise pickup. In addition,
high voltage isolation rules must be followed carefully to avoid
breakdown failure of the circuit board.
Recommended Components
secondary and diode, to minimize parasitic capacitance.
For low threshold logic (<1.2 V) add 1 nF capacitors across the
CHARGE and TRIGGER pins to GND to avoid malfunction due
to noise.
Connect the EE package PAD to the ground pad for better ther-
mal performance. Use ground planes on the top and bottom layers
below the IC and connect them through multiple thermal vias.
Refer to the figures on page 20 for recommended layout.
Component
C1, Input Capacitor
C2
C OUT , Photoflash
Capacitor
D1, Output Diode
T1, Transformer
Rating
10 μ F, ±10%, 6.3 V, X5R ceramic
capacitor (0805)
0.1uF, 6.3V X5R ceramic capacitor
100 μ F / 330 V
2 x 250 V, 225 mA, 5 pF
L PRIMARY = 12.8 μ H, N= 10.25,
6.5 × 8 × 4 mm
Part Number
JMK212BJ106K
EPH-31ELL101B131S
BAV23S
T-16-024A
Source
Taiyo Yuden
Chemi-Con
Philips Semiconductor,
Fairchild Semiconductor
Tokyo Coil Electric
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
19
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A8740EEETR-T | 功能描述:IC PHOTOFLASH CAP CHARGER 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
| A874C | 功能描述:通用继电器 RELAY RoHS:否 制造商:Omron Electronics 触点形式:1 Form A (SPST-NO) 触点电流额定值:150 A 线圈电压:24 VDC 线圈电阻:144 Ohms 线圈电流:167 mA 切换电压:400 V 安装风格:Chassis 触点材料: |
| A874L | 功能描述:通用继电器 CONTACTOR 3 PST RoHS:否 制造商:Omron Electronics 触点形式:1 Form A (SPST-NO) 触点电流额定值:150 A 线圈电压:24 VDC 线圈电阻:144 Ohms 线圈电流:167 mA 切换电压:400 V 安装风格:Chassis 触点材料: |
| A-874L | 制造商:MA-COM 制造商全称:M/A-COM Technology Solutions, Inc. 功能描述:A-874L 3PST, 335 Amps, 200 VAC, 400 Hz |
| A874WA1 | 功能描述:通用继电器 RELAY RoHS:否 制造商:Omron Electronics 触点形式:1 Form A (SPST-NO) 触点电流额定值:150 A 线圈电压:24 VDC 线圈电阻:144 Ohms 线圈电流:167 mA 切换电压:400 V 安装风格:Chassis 触点材料: |
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