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參數(shù)資料
| 型號： | CAT4237 |
| 英文描述： | High Voltage CMOS Boost White LED Driver |
| 中文描述： | 高電壓的CMOS升壓白光LED驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 11/13頁 |
| 文件大?。?/td> | 533K |
| 代理商： | CAT4237 |
CAT4237
2005 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
11 of 13
Doc. No. 5013, Rev. A
BOARD LAYOUT
The CAT4237 is a high-frequency switching
regulator. The traces that carry the 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 on Figure 3 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 3 corresponds to the
current path when the CAT4237 internal
switch is closed. On Figure 4 is shown the
current loop, when the CAT4237 switch is
Figure 3. Closed-switch current loop
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 CAT4237 allows for direct connection of
the capacitors to ground. The resistor R1
must be connected directly to the GND pin of
the CAT4237 and not shared with the
switching current loops and any other
components.
closed
Figure 4. Open-switch current loop
open
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| CAT4237TD | High Voltage CMOS Boost White LED Driver |
| CAT4237TS | High Voltage CMOS Boost White LED Driver |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT4237_07 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:High Voltage CMOS Boost White LED Driver |
| CAT4237_08 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:High Voltage CMOS Boost White LED Driver |
| CAT4237BEVB | 功能描述:BOARD EVALUATION DPP CAT4237B RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - LED 驅(qū)動(dòng)器 系列:* 標(biāo)準(zhǔn)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(diǎn):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 |
| CAT4237BGEVB | 功能描述:CAT4237 1, Non-Isolated Output LED Driver Evaluation Board 制造商:on semiconductor 系列:- 零件狀態(tài):有效 電流 - 輸出/通道:30mA 輸出和類型:1，非隔離 電壓 - 輸出:30V 特性:可調(diào)光 電壓 - 輸入:2.8 V ~ 5.5 V 所含物品:板 使用的 IC/零件:CAT4237 標(biāo)準(zhǔn)包裝:1 |
| CAT4237TD | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:High Voltage CMOS Boost White LED Driver |
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