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参数资料
| 型号： | SP7686AEB |
| 厂商： | Exar Corporation |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR SP7666A |
| 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 |
|---|---|
| SP7686AER | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP7686AER-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 |
| SP7686AER-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 |
| SP7686EB | 功能描述:电源管理IC开发工具 500mA Programmable Charge Pump LED Drvr RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| SP7686ER | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
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