參數(shù)資料
型號(hào)： CAT4240
元件分類(lèi)： LED驅(qū)動(dòng)器
英文描述： 6 Watt Boost LED Driver
中文描述： 6瓦升壓LED驅(qū)動(dòng)器
文件頁(yè)數(shù)： 9/14頁(yè)
文件大小： 319K
代理商： CAT4240
CAT4240
Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
9
Doc. No. MD-5026 Rev. B
OPEN LED PROTECTION
In the event of an “Open LED” fault condition, the
CAT4240 will continue to boost the output voltage
with maximum power until the output voltage
reaches approximately 40V. 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 6mW (about
1.6mA input current 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 Protection without Zener
VIN
CAT4240
V
L
L
Schottky 100V
(Central CMSH1-100)
VOUT
R1
3
4.7μF
13V
VIN
5V
ON OFF
C1
C2
FB
SHDN
GND
47μH
1μF
SW
Open LED Supply Current vs. VIN
without Zener
0.0
1.0
2.0
3.0
4.0
5.0
8
9
10 11 12 13 14 15 16
INDUCTOR VOLTAGE [V]
I
VIN = 5V
Open LED Disconnect and Reconnect
Open LED Disconnect
Open LED Output Voltage vs. VIN
without Zener
40
45
50
55
60
8
9
10 11 12 13
INDUCTOR VOLTAGE [V]
14 15 16
O
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CAT4240_0711 制造商:CATALYST 制造商全稱(chēng):Catalyst Semiconductor 功能描述:6 Watt Boost LED Driver
CAT4240AEVB 功能描述:BOARD EVALUATION DPP CAT4240A 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
CAT4240AGEVB 制造商:ON Semiconductor 功能描述:EVAL BD FOR LED DRIVER - Bulk 制造商:ON Semiconductor 功能描述:BOARD EVAL FOR CAT4240
CAT4240TD-GT3 功能描述:LED照明驅(qū)動(dòng)器 High Voltage Boost 2 Watt 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(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
CAT4240TD-GT3 制造商:ON Semiconductor 功能描述:IC LED DRIVER BOOST TSOT-23-5 制造商:ON Semiconductor 功能描述:IC, LED DRIVER, BOOST, TSOT-23-5
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