- 您现在的位置：买卖IC网 > Datasheet目录318 > CAT4139TD-GT3 (ON Semiconductor)IC LED DRVR WHITE BCKLGT TSOT-5 Datasheet资料下载
参数资料
| 型号： | CAT4139TD-GT3 |
| 厂商： | ON Semiconductor |
| 文件页数： | 11/13页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT TSOT-5 |
| 特色产品： | CAT4139 |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 800kHz ~ 1.3MHz |
| 电源电压： | 2.8 V ~ 5.5 V |
| 输出电压： | 22V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 供应商设备封装： | TSOT-23-5 |
| 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： | CAT4139TD-GT3DKR |
CAT4139
Board Layout
The CAT4139 is a high-frequency switching regulator.
The traces that carry the high-frequency switching current
have to be carefully laid out on the board in order to
minimize EMI, ripple and noise in general. The thicker lines
on Figure 26 show the switching current path. All these
traces have to be short and wide enough to minimize the
parasitic inductance and resistance. The loop shown on
Figure 26 corresponds to the current path when the
CAT4139 internal switch is closed. On Figure 27 is shown
the current loop, when the CAT4139 switch is open. Both
loop areas should be as small as possible.
Capacitor C1 has to be placed as close as possible to the
VIN pin and GND. The capacitor C2 has to be connected
separately to the top LED anode. A ground plane under the
CAT4139 allows for direct connection of the capacitors to
ground. The resistor R1 must be connected directly to the
GND pin of the CAT4139 and not shared with the switching
current loops and any other components.
V IN
L
D
V OUT
V IN
L
D
V OUT
VIN
SW
VIN
SW
SHDN
CAT4139
Switch
Closed
FB
SHDN
CAT4139
Switch
Open
FB
C 1
GND
C 2
R1
C 1
GND
C 2
R1
Figure 26. Closed ? switch Current Loop
Figure 27. Open ? switch Current Loop
Figure 28. Recommended PCB Layout
http://onsemi.com
11
相关PDF资料 |
PDF描述 |
|---|---|
| CAT4237TD-T3 | IC LED DRVR WHITE BCKLGHT TSOT-5 |
| CAT4238TD-GT3 | IC LED DRVR WHITE BCKLGHT TSOT-5 |
| CAT4240TD-GT3 | IC LED DRVR WHITE BCKLGHT TSOT-5 |
| CAT93C56XI | IC EEPROM 2KBIT 2MHZ 8SOIC |
| CAT93C66XI | IC EEPROM 4KBIT 2MHZ 8SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT4139TD-GT3 | 制造商:ON Semiconductor 功能描述:DRIVER LED 0.75A 1MHZ 22V 制造商:ON Semiconductor 功能描述:IC WHITE LED DRIVER BOOST TSOT-23-5 |
| CAT4139TD-GT3 | 制造商:ON Semiconductor 功能描述:IC WHITE LED DRIVER BOOST TSOT-23-5 |
| CAT-41871 | 制造商:Thomas & Betts 功能描述:Cable Accessories Cable Tie Box |
| CAT-41872 | 制造商:Thomas & Betts 功能描述:Cable Accessories Cable Tie Box |
| CAT4201 | 制造商:CATALYST 制造商全称:Catalyst Semiconductor 功能描述:350mA High Efficiency Step Down LED Driver |
发布紧急采购，3分钟左右您将得到回复。