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參數(shù)資料
| 型號： | NCP551SN33T1 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 150 mA CMOS Low Iq Low-Dropout Voltage Regulator |
| 中文描述： | 3.3 V FIXED POSITIVE LDO REGULATOR, 0.15 V DROPOUT, PDSO5 |
| 封裝： | SC-59, SOT-23, TSOP-5 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 89K |
| 代理商： | NCP551SN33T1 |
NCP551, NCV551
http://onsemi.com
9
Output
R
1
2
3
5
4
Input
1.0 F
1.0 F
Output
1
2
3
5
4
Input
1.0 F
1.0 F
Q2
Q1
R3
R1
R2
Output
1
2
3
5
4
Input
1.0 F
1.0 F
Output
1
2
3
5
4
Enable
1.0 F
1.0 F
C
Output
1
2
3
5
4
Input
1.0 F
1.0 F
Q1
R
11 V
Figure 21. Current Boost Regulator
Figure 22. Current Boost Regulator with
Short Circuit Limit
Figure 23. Delayed Turnon
Figure 24. Input Voltages Greater than 12 V
A regulated output can be achieved with input voltages that
exceed the 12 V maximum rating of the NCP551 series with
the addition of a simple preregulator circuit. Care must be
taken to prevent Q1 from overheating when the regulated
output (V
out
) is shorted to GND
.
The NCP551 series can be current boosted with a PNP transis-
tor. Resistor R in conjunction with V
BE
of the PNP determines
when the pass transistor begins conducting; this circuit is not
short circuit proof. Input/Output differential voltage minimum is
increased by V
BE
of the pass resistor.
Short circuit current limit is essentially set by the V
BE
of Q2 and
R1. I
SC
= ((V
BEQ2
ib * R2) / R1) + I
O(max) Regulator
If a delayed turnon is needed during power up of several volt-
ages then the above schematic can be used. Resistor R, and
capacitor C, will delay the turnon of the bottom regulator.
Q1
R
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| NCV551SN27T1 | AC 8C 1#12 7#16 SKT PLUG RTANG RoHS Compliant: No |
| NCV551SN28T1 | AC 5C 5#16S PIN RECP |
| NCV551SN30T1 | AC 24C 24#16 PIN RECP |
| NCV551SN32T1 | AC 24C 24#16 SKT RECP |
| NCV551SN33T1 | 150 mA CMOS Low Iq Low-Dropout Voltage Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCP551SN33T1G | 功能描述:低壓差穩(wěn)壓器 - LDO 3.3V 150mA CMOS w/Enable RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| NCP551SN33T1G | 制造商:ON Semiconductor 功能描述:Linear Voltage Regulator IC |
| NCP551SN33T1G-CUT TAPE | 制造商:ON 功能描述:NCP551 Series 3.3 V 150 mA CMOS Low Iq Low-Dropout Voltage Regulator- TSOP-5 |
| NCP551SN50T1 | 功能描述:低壓差穩(wěn)壓器 - LDO 5.0V 150mA CMOS RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| NCP551SN50T1G | 功能描述:低壓差穩(wěn)壓器 - LDO 5.0V 150mA CMOS w/Enable RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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