參數(shù)資料
型號： CAT4137
元件分類： LED驅(qū)動器
英文描述： CMOS Boost Converter- White LED Driver
中文描述： 的CMOS升壓轉(zhuǎn)換器，白光LED驅(qū)動器
文件頁數(shù)： 12/14頁
文件大?。?/td> 504K
代理商： CAT4137
CAT4137
2005 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
12 of 14
Doc. 5012 , Rev. A
Board Layout
The CAT4137 is a high-frequency switching
regulator. Traces carrying high-frequency
switching current have to be carefully layout
on the board in order to minimize EMI, ripple
and noise in general. The thicker lines
shown on Figure 4 indicate 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 4 corresponds to the
current path when the CAT4137 internal
switch is closed. On Figure 5 is shown the
current loop when the CAT4137 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 CAT4137 allows for direct connection of
the capacitors to ground. The resistor R1
must be connected directly to the GND pin of
the CAT4137 and not shared with the
switching current loops and any other
components.
Figure 5. Open-switch current loop
Figure 4. Closed-switch current loop
Figure 5. Open-switch current loop
closed
open
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CAT4137AEVB 功能描述:BOARD EVALUATION DPP CAT4137A RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - LED 驅(qū)動器 系列:* 標準包裝:1 系列:PowerWise® 電流 - 輸出 / 通道:20mA 輸出及類型:1，非隔離 輸出電壓:17V 特點:可調(diào)光 輸入電壓:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相關(guān)產(chǎn)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 制造商全稱:Catalyst Semiconductor 功能描述:CMOS Boost Converter - White LED Driver
CAT4137TD-GT3 功能描述:LED照明驅(qū)動器 LED Driver,Boost 5 LED,series RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N
CAT4137TD-T3 功能描述:LED照明驅(qū)動器 Boost Converter White LED RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N
CAT4137TS 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:CMOS Boost Converter - White LED Driver
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