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参数资料
| 型号： | CAT4134HV2-GT2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | IC LED BOOST DRIVER 2CH 12TDFN |
| 标准包装： | 2,000 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 2 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，闪灯/白光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 900kHz，1.2MHz |
| 电源电压： | 2.8 V ~ 4.2 V |
| 输出电压： | 20V |
| 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： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
CAT4134
Device Operation
R1 + VOUT MAX * 1.2
The device is powered from the input pin VIN. A
switching frequency of 1.2 MHz is used in Movie mode,
when the FLASH input is low. Continuous LED current up
to 50 mA is controlled by the RSET resistor. For higher load
current, the Flash mode is selected by setting the FLASH
input pin high. RFLASH now controls the LED current. In
flash mode, the driver efficiency is kept high even under
high load current by using a lower switching frequency of
900 kHz. In movie mode, the higher frequency of 1.2 MHz
provides a lower noise operation.
Overvoltage Protection (OVP)
To prevent the SW pin voltage from exceeding the internal
switch maximum voltage rating, an overvoltage protection
(OVP) function is supported. The OVP pin allows to set the
Block Diagram
VIN
maximum operating voltage on the output VOUT using
external resistors R1 and R2. The resistor ratio sets the
maximum output voltage as shown in the equation below:
R2 1.2
VOUT MAX should always be higher than the total LED
forward voltage ( S Vf) plus 1.2 V. Also VOUT must be less
than S Vf + 8 V.
S Vf ) 1.2 V t VOUT MAX t S Vf ) 8 V t 16 V
If the overvoltage protection is not needed, then the OVP pin
should be connected to Ground. In that case, the maximum
voltage on the SW pin is set to 17 V.
VOUT
C IN
VIN
EN
Dual
Frequency
PWM
Controller
SW
C OUT
PGND
LED1
FLASH
RFLASH
LED2
OVP
R1
RFLASH
RSET
RSET
mux
Current
Setting
AGND
2 Current Sink
Regulators
R2
Figure 15. Block Diagram
http://onsemi.com
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT4134HV2-T2 | 功能描述:LED照明驱动器 Dual Ch Movie/Flash 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 |
| CAT4137 | 制造商:CATALYST 制造商全称:Catalyst Semiconductor 功能描述:CMOS Boost Converter- White LED Driver |
| CAT4137AEVB | 功能描述:BOARD EVALUATION DPP CAT4137A RoHS:是 类别:编程器，开发系统 >> 评估板 - LED 驱动器 系列:* 标准包装:1 系列:PowerWise® 电流 - 输出 / 通道:20mA 输出及类型:1，非隔离 输出电压:17V 特点:可调光 输入电压:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相关产品:LM3508TLX-ND - IC LED DRVR WHT BCKLGT 9USMDLM3508TLDKR-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLCT-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLTR-ND - IC LED DRVR WHT BCKLGT 9MICROSMD |
| CAT4137TD | 制造商:CATALYST 制造商全称:Catalyst Semiconductor 功能描述:CMOS Boost Converter - White LED Driver |
| CAT4137TD-GT3 | 功能描述:LED照明驱动器 LED Driver,Boost 5 LED,series 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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