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参数资料
| 型号： | CAT3637HV3-GT2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 10/14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
Simplified Block Diagram
C 1 ?
C 1+
C 2 ?
C 2+
V IN
1x mode (LDO)
1.33x, 1.5x, 2x Charge Pump
V OUT
EN/SET
100 k Ω
Serial
Interface
Registers
0.8, 1.1 MHz
Oscillator
Reference
Voltage
Current
Setting DAC
Mode Control
LED1
LED2
LED3
LED4
LED5
LED6
6 Current
Regulators
GND
Figure 23. CAT3637 Functional Block Diagram
Basic Operation
At power ? up, the CAT3637 starts operating in 1x mode
where the output will be approximately equal to the input
supply voltage (less any internal voltage losses). If the
output voltage is sufficient to regulate all LED currents, the
device remains in 1x operating mode.
If the output voltage is insufficient or falls to a level where
the regulated current cannot be maintained, the device
automatically switches into 1.33x mode (after a fixed delay
time of about 120 m s). In 1.33x mode, the output voltage is
approximately equal to 1.33 times the input supply voltage
(less any internal voltage losses).
device will automatically switch to the 1.5x mode (after a
fixed delay time of about 400 m s). In 1.5x mode, the output
is approximately equal to 1.5 times the input supply voltage
(less any internal voltage losses).
If the output voltage is still insufficient to drive the LEDs,
it will automatically switch into 2x mode where the output
is approximately equal to 2 times the input supply voltage
(less any internal voltage losses).
If the device detects a sufficient output voltage to drive all
LED currents in 1x mode, it will revert back to 1x mode. This
only applies for changing back to the 1x mode.
If the output voltage is still insufficient or falls to a level
where the regulated currents cannot be maintained, the
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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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