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参数资料
| 型号： | CAT4134HV2-GT2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/12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
Application Information
The typical application for the CAT4134 is in a
camera ? equipped cellular phone where the LEDs are used
for illumination in flash mode with short duration
high ? current pulse and in movie mode with continuous
lighter load. In movie mode, the FLASH pin is set low.
Movie Mode
When the EN input is high and FLASH is low, the driver
is in movie mode. In this mode, the LED1 and LED2 pin
currents are set by the resistor RSET and are regulated to 360
times the current in the RSET resistor and follows the
equation:
LED current + 360
NOTE:
Hot-plugging the LEDs while the output is fully charged
is not recommended. If the LEDs are disconnected, the
device should first be powered-down and the output
discharged before reconnecting the LEDs to the output
and the LED pins.
EN
1.2 V
RSET
Table 5 lists the various LED currents and the associated
resistor values in movie and flash modes.
Table 5.
RESISTOR SELECTION IN MOVIE AND FLASH MODE
FLASH
Movie Mode
LED Current
RSET
Flash Mode
LED Current RFLASH
LED1, LED2
Current
movie
mode
flash
mode
movie
mode
(mA)
5
10
(k W )
86.4
43.2
(mA)
50
75
(k W )
43.2
28.8
20
21.6
100
21.6
Figure 16. Timing Diagram
30
14.4
150
14.4
LED Current Setting
Flash Mode
The enable EN and FLASH logic input signals control the
LED current. When both the EN and FLASH inputs are high,
the driver is in flash or strobe mode. In this mode, the LED1
and LED2 pin currents are set by the resistor RFLASH and
are regulated to 1800 times the current in the RFLASH
resistor and follows the equation:
Shutdown Mode
When the EN input is low, the driver is in shutdown mode
and there is no current flowing in either LED1 or LED2 pins.
LED current + 1800
1.2 V
RFLASH
http://onsemi.com
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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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