參數(shù)資料
型號： 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)動器
文件頁數(shù)： 9/13頁
文件大小： 533K
代理商： CAT4237TS
CAT4237
2005 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
9 of 13
Doc. No. 5013, Rev. A
OPEN LED PROTECTION
In the event of an “Open LED” fault condition,
the CAT4237 will continue to boost the output
voltage with maximum power until the output
voltage reaches approximately 35V. Once the
output exceeds this level, the internal circuitry
immediately places the device into a very low
power mode where the total input power is
limited to about 4mW (about 1mA input current
Open LED Protection without Zener
with a 3.6V supply). The SW pin clamps at a
voltage below its maximum rating of 60V. There
is no need to use an external zener diode
between Vout and the FB pin. A 50V rated C2
capacitor is required to prevent any overvoltage
damage in the open LED condition.
Open LED Switching waveforms
without Zener
Open LED Supply Current vs. VIN
without Zener
0.0
0.5
1.0
1.5
2.0
2.5
3.0
INPUT VOLTAGE [V]
3.5
4.0
4.5
5.0
S
Open LED Output Voltage vs. VIN
without Zener
30
35
40
45
50
2.5
3.0
INPUT VOLTAGE [V]
3.5
4.0
4.5
5.0
O
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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:ON Semiconductor 功能描述:High Efficiency 10 LED Boost Converter
CAT4238_07 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:High Efficiency 10 LED Boost Converter
CAT4238AEVB 功能描述:BOARD EVALUATION DPP CAT4238A RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - LED 驅(qū)動器 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: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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