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参数资料
| 型号： | CAT3643HV2-T2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/15页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 12-TDFN |
| 标准包装： | 1 |
| 系列： | QUAD-Mode® |
| 拓扑： | 切换式电容器（充电泵） |
| 输出数： | 3 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 800kHz ~ 1.6MHz |
| 电源电压： | 2.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-WFDFN 裸露焊盘 |
| 供应商设备封装： | 12-TDFN（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： | CAT3643HV2-T2DKR |
CAT3643
Table 6. PIN DESCRIPTION
Name
LED1
LED2
LED3
RSET
EN/DIM
VOUT
VIN
C1+
C1 ?
C2+
C2 ?
GND
NC
GND
Pin Function
Function
LED1 cathode terminal.
LED2 cathode terminal.
LED3 cathode terminal.
Connect resistor RSET to set the LED current.
Device enable (active high) and Dimming Control.
Charge pump output connected to the LED anodes.
Charge pump input, connect to battery or supply.
Bucket capacitor 1 Positive terminal
Bucket capacitor 1 Negative terminal
Bucket capacitor 2 Positive terminal
Bucket capacitor 2 Negative terminal
Ground Reference
Not connected inside package.
Connect to GND on the PCB.
VIN is the supply pin for the charge pump. A small 1 m F
ceramic bypass capacitor is required between the VIN pin
and ground near the device. The operating input voltage
range is from 2.5 V to 5.5 V. Whenever the input supply falls
below the under ? voltage threshold (1.8 V), all the LED
channels are disabled and the device enters shutdown mode.
EN/DIM is the enable and one wire dimming input for all
LED channels. Levels of logic high and logic low are set at
1.3 V and 0.4 V respectively. When EN/DIM is initially
taken high, the device becomes enabled and all LED
currents are set to the full scale according to the resistor
R SET . To place the device into “zero current” shutdown
mode, the EN/DIM pin must be held low for at least 1.5 ms.
VOUT is the charge pump output that is connected to the
LED anodes. A small 1 m F ceramic bypass capacitor is
required between the VOUT pin and ground near the device.
GND is the ground reference for the charge pump. The pin
C1+, C1 ? are connected to each side of the ceramic bucket
capacitor C 1 .
C2+, C2 ? are connected to each side of the ceramic bucket
capacitor C 2 .
LED1, LED2, LED3 provide the internal regulated current
sources for each of the LED cathodes. These pins enter
high ? impedance zero current state whenever the device is
placed in shutdown mode.
TAB is the exposed pad underneath the package. For best
thermal performance, the tab should be soldered to the PCB
and connected to the ground plane.
RSET is connected to the resistor (R SET ) to set the full scale
current for the LEDs. The voltage at this pin regulated to
0.6 V. The ground side of the external resistor should be star
connected back to the GND of the PCB. In shutdown mode,
RSET becomes high impedance.
must be connected to the ground plane on the PCB.
http://onsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT3643HV3 | 制造商:ON Semiconductor 功能描述:IC 3-LED DRIVER QUAD HI EFFICIENCY |
| CAT3643HV3-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 |
| CAT3643HV3-T2 | 功能描述:LED照明驱动器 3-Channel Quad-Mode 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 |
| CAT3644 | 制造商:CATALYST 制造商全称:Catalyst Semiconductor 功能描述:4-Channel Ultra High Efficiency Quad-Mode⑩ LED Driver |
| CAT3644_0710 | 制造商:CATALYST 制造商全称:Catalyst Semiconductor 功能描述:4-Channel Ultra High Efficiency Quad-Mode⑩ LED Driver |
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