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参数资料
| 型号： | CAT3637HV3-GT2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 11/14页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 16-TQFN |
| 标准包装： | 1 |
| 系列： | QUAD-Mode® |
| 拓扑： | 切换式电容器（充电泵） |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 600kHz ~ 1.4MHz |
| 电源电压： | 2.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN（3x3） |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 产品目录页面： | 805 (CN2011-ZH PDF) |
| 其它名称： | CAT3637HV3-GT2DKR |
CAT3637
LED Current Setting
The current in each of the six LED channels is
programmed through the 1 ? wire EN/SET digital control
input. At the initial power ? up and once the EN/SET is set
high, the LED current remains at zero in all channels. On the
first EN/SET pulse (positive edge), the current is set to 2 mA
in all channels. On each consecutive pulse, the current is
incremented by 2 mA. On the 15 th pulse, the current is equal
to the full scale of 30 mA. On the following pulse (16 th
pulse), the current goes back to zero and the previous
T HI
EN/SET
T LO
sequence can be repeated. The EN/SET pin can be pulsed at
high frequency 15 times to decrement the current by 2 mA
or to program the current from 0 mA to 30 mA. The
maximum EN/SET signal frequency for programming the
LED current is 2.5 MHz.
To power ? down the device and turn ? off all current
sources, the EN/SET input should be kept low for a duration
T OFF of 1.5 ms or more. The driver typically powers ? down
with a delay of about 1 ms.
T OFF
T D
28 mA 30 mA
LED
Current
Shutdown
0 mA
2 mA 4 mA
6 mA
0 mA
2 mA
Shutdown
Figure 24. EN/SET One Wire Addressable Timing Diagram
Figure 25. EN/SET Program Increasing / Decreasing LED Current by 2 mA
http://onsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT3643 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:3-Channel Ultra High Efficiency Quad-Mode LED Driver |
| CAT3643_0710 | 制造商:CATALYST 制造商全称:Catalyst Semiconductor 功能描述:3-Channel Ultra High Efficiency Quad-Mode⑩ LED Driver |
| CAT3643HL1-T2 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:3-Channel Ultra High Efficiency Quad-Mode LED Driver |
| CAT3643HV2-GT2 | 功能描述:LED照明驱动器 LED Driver,Quad mode,3 ch 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 |
| CAT3643HV2-T2 | 功能描述:LED照明驱动器 LED Driver,Quad mode,3 ch 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 |
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