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參數(shù)資料
| 型號： | ZXCL1330H5 |
| 廠商： | ZETEX PLC |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 3.3 V FIXED POSITIVE LDO REGULATOR, 0.28 V DROPOUT, PDSO5 |
| 封裝： | 2.10 X 2 MM, SC-70, 5 PIN |
| 文件頁數(shù)： | 7/11頁 |
| 文件大?。?/td> | 374K |
| 代理商： | ZXCL1330H5 |
Input to Output Diode
In common with many other LDO regulators, the ZXCL
device has an inherent diode associated with the
output series pass transistor of each regulator. This
diode has its anode connected to the output and its
cathode to the input. The internal diode is normally
reverse biased, but will conduct if the output is forced
above the input by more than a V
BE
(approximately
0.6V). Current will then flow from Vout to Vin. For safe
operation, the maximum current in this diode should
be limited to 5mA continuous and 30mA peak. An
external schottky diode may be used to provide
protection when this condition cannot be satisfied.
Increased Output current
Any ZXCL series device may be used in conjunction
with an external PNP transistor to boost the output
current capability. In the application circuit
below, a FMMT717 device is employed as the external
passelement.ThisSOT23devicecansupplyupto2.5A
maximum current subject to the thermal dissipation
limits of the package (625mW). Alternative devices
may be used to supply higher levels of current. Note
that with this arrangement, the dropout voltage will be
increased by the VBE drop of the external device. Also,
care should be taken to protect the pass transistor in
the event of excessive output current.
shown
ISSUE 5 - NOVEMBER 2001
ZXCL250 ZXCL260 ZXCL280
ZXCL300 ZXCL330 ZXCL400
7
VIN
EN
G
VO
U1
ZXCL SERIES
Q1
FMMT717
R1
5.6R
C2
1uF
C1
1uF
C3
1uF
VOUT
VIN
Scheme to boost output current to 2A
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| ZXCL1400H5 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
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| ZXCL5213V30H5 | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ZXCL1400H5 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:ULTRA SMALL MICROPOWER SC70 LOW DROPOUT REGULATORS |
| ZXCL200 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:ULTRA SMALL MICROPOWER SC70 2V 100mA REGULATOR |
| ZXCL200E5 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:ULTRA SMALL MICROPOWER SC70 2V 100mA REGULATOR |
| ZXCL200H5 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:ULTRA SMALL MICROPOWER SC70 2V 100mA REGULATOR |
| ZXCL250 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:ULTRA SMALL MICROPOWER SC70 LOW DROPOUT REGULATORS |
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