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| 型号： | SP7686EB |
| 厂商： | Exar Corporation |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR SP7666 |
| 标准包装： | 1 |
| 系列： | * |
S P 7 6 8 6 / S P 7 6 8 6 A
C o n s t a n t C u r r e n t F l a s h D r i v e r i n D F N 2 m m x 3 m m
January 2010
GENERAL DESCRIPTION
The SP7686/SP7686A are current regulated
charge pumps ideal for powering high power,
high brightness LEDs for camera FLASH
applications of up to 500mA.
The charge pump automatically switches
between step-up and step-down modes
ensuring that the LED current does not depend
on the forward voltage. A low current sense
reference voltage (60mV to 360mV) allows the
use of small 0603 current sensing resistors.
The SP7686 has a DAC programmable
feedback reference voltage allowing the user
to precisely set FLASH and TORCH output
current levels, while the fixed version
SP7686A has set levels of FLASH and TORCH
reference voltage. Both parts have over-
voltage, over-current, over-temperature and
FLASH time-out protection features.
The SP7686 and SP7686A are offered in a
RoHS compliant “green”/halogen free space
saving 8-pin 2x3mm DFN package.
Rev. 2.1.0
APPLICATIONS
? Cell Phone Flash
? Cell Phone Torch
? General LED applications
FEATURES
? Output current up to 500mA
? Up to 94% efficiency
? Single Wire serial interface
? 2.4MHz switching frequency
? FB Reference voltage adjusts in 10mV
steps from 60mV to 360mV
? 10nA Shutdown
? PWM brightness control for DAC
? Fast turn-on (<150 μ s)
? 3.5s Timeout function
? Thermal shutdown protection
? Built-in over-voltage and over-current
protection
? Fixed output SP7686A
? Automatic soft start limits in-rush
current
? RoHS Compliant, “Green”/Halogen
Free 8-pin 2x3mm DFN
TYPICAL APPLICATION DIAGRAM
Fig. 1: SP7686 and SP7686A Application Diagrams
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP7686ER | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP7686ER-L | 功能描述:LED照明驱动器 Driver in 2x3 DFN RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| SP7686ER-L/TR | 功能描述:LED照明驱动器 500mA PROG CHARGE PUMP LED DRVR RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| SP76948 | 制造商:L COM 功能描述:CA RA MHDMI M/RA HDMI MLD 0.5M |
| SP-7721 | 功能描述:SPEAKER 92DB SENSITIVITY 77 DIA. 制造商:soberton inc. 系列:SP 微型扬声器 包装:托盘 零件状态:在售 技术:磁性 类型:通用 频率范围:400Hz ~ 4kHz 频率 - 自谐振:400Hz 阻抗:8 Ohms 效率 - dBA:92 效率 -?测试:100mW/100mm 效率 -?类型:声压级?(SPL) 功率 - 额定值:1W 功率 - 最大值:2W 端口位置:顶部 形状:圆形 材料 - 锥体:纸 材料 - 磁铁:Nd-Fe-B 侵入防护:- 等级:- 端接:焊接孔眼 大小/尺寸:3.032" 直径（77.00mm） 高度 - 安装（最大值）:0.866"（22.00mm） 标准包装:50 |
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