- 您现在的位置：买卖IC网 > Datasheet目录307 > A8740EEETR-T (Allegro Microsystems Inc)IC PHOTOFLASH CAP CHARGER 8DFN Datasheet资料下载
参数资料
| 型号： | A8740EEETR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 15/18页 |
| 文件大小： | 0K |
| 描述： | IC PHOTOFLASH CAP CHARGER 8DFN |
| 标准包装： | 24,000 |
| 拓扑： | 交直流离线开关，反激式，PFC |
| 输出数： | 1 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 闪灯/白光 |
| 电源电压： | 1.5 V ~ 5.5 V |
| 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-EP（2x2） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
A8740
Layout Guidelines
Ultra Small Mobile Phone Xenon Photoflash
Capacitor Charger with IGBT Driver
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
Recommended Components
breakdown failure of the circuit board.
Avoid placing any ground plane area underneath the transformer
secondary and diode, to minimize parasitic capacitance.
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 18 for recommended layout.
Component
C1, Input Capacitor
C2
COUT, Photoflash
Capacitor
D1, Output Diode
T1, Transformer
Rating
10 μ F, ±10%, 6.3 V, X5R ceramic
capacitor (0805)
0.1 μ F, 6.3 V 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
L PRIMARY = 6 μ H, N= 10.4,
5.6 × 5.6 × 3 mm
Part Number
JMK212BJ106K
EPH-31ELL101B131S
BAV23S
T-16-024A
LDT565630T-001
Source
Taiyo Yuden
Chemi-Con
Philips Semiconductor,
Fairchild Semiconductor
Tokyo Coil Electric
TDK
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
14
相关PDF资料 |
PDF描述 |
|---|---|
| AC162049-2 | MOD PROGR UNIV MPLAB ICD2 ICD3 |
| AC162049 | MODULE SOCKET FOR ICD2 DIP |
| AC163020 | ADAPTER PROGRAMMER PIC10F2XX |
| AC164032 | ADAPTER PICSTART PLUS 8DFN/DIP |
| AC164306 | MODULE SKT FOR PM3 20TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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: |
| A8759 | 制造商:Bourns Inc 功能描述: |
发布紧急采购，3分钟左右您将得到回复。