參數(shù)資料
型號(hào)： CAT4237TS
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(yè)數(shù)： 11/13頁(yè)
文件大?。?/td> 533K
代理商： CAT4237TS
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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CAT4237TS-TE7 制造商:Rochester Electronics LLC 功能描述: 制造商:Catalyst Semiconductor 功能描述:
CAT4238 制造商:ONSEMI 制造商全稱(chēng):ON Semiconductor 功能描述:High Efficiency 10 LED Boost Converter
CAT4238_07 制造商:CATALYST 制造商全稱(chēng):Catalyst Semiconductor 功能描述:High Efficiency 10 LED Boost Converter
CAT4238AEVB 功能描述:BOARD EVALUATION DPP CAT4238A RoHS:是 類(lèi)別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)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(lèi)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
CAT4238AGEVB 功能描述:BOARD EVALUATION DPP CAT4238A 制造商:on semiconductor 系列:- 零件狀態(tài):在售 電流 - 輸出/通道:40mA 輸出和類(lèi)型:1，非隔離 電壓 - 輸出:- 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:CAT4238 標(biāo)準(zhǔn)包裝:1
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