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參數(shù)資料
| 型號： | CAT4240TD-GT3 |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | 6 Watt Boost LED Driver |
| 中文描述： | 6瓦升壓LED驅(qū)動器 |
| 文件頁數(shù)： | 9/14頁 |
| 文件大?。?/td> | 319K |
| 代理商： | CAT4240TD-GT3 |
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 |
|---|---|
| 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 |
| CAT-42506 | 制造商:Thomas & Betts 功能描述:1/4' YELLOW 6 PCS. PER BAG |
| CAT4254VP2-GT3 | 制造商:Catalyst Semiconductor 功能描述: 制造商:ON Semiconductor 功能描述: |
| CAT431L | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:Low-Voltage Adjustable Precision Voltage Reference |
| CAT431LEUK-TE7 | 功能描述:基準電壓& 基準電流 1.24V .5% RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓撲結(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
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