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| 型号： | SP7686EB |
| 厂商： | Exar Corporation |
| 文件页数： | 11/16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
O VERVOLTAGE P ROTECTION
The SP7686 has over voltage protection. If the
output voltage rises above the 5.5V threshold,
the over voltage protection shuts off all of the
output switches to prevent the output voltage
from rising further. When the output
decreases below 5.5V, the device resumes
normal operation.
O VERCURRENT P ROTECTION
The overcurrent protection circuitry monitors
the average current out of the VOUT pin. If
the average output current exceeds
approximately 1.5Amp, then the overcurrent
protection circuitry shuts off the output
switches to protect the chip.
APPLICATIONS INFORMATION
The SP7686 can be used with multiple LEDs in
parallel as shown below. For best
performance, the LEDs should be in a single
package, preferably from a single die to have
better matching for forward voltage VF for a
given forward current IF. In practice, if the VF
of one LED is higher than the others, it will
consume a larger IF, which will raise its
temperature which will then cause its VF to
reduce, correcting the imbalance. The overall
current will be the sum of the individual
currents, for example ITOTAL = 4*I LED .
Figure 24.
Fig. 1: SP7686 with 4 LEDs in parallel
Fig. 2: SP7686A with 4 LEDs in parallel
? 2010 Exar Corporation
11/16
Rev. 2.1.0
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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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