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參數(shù)資料
| 型號(hào)： | NCP551 |
| 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： | 一百五十毫安CMOS低智商低壓差穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 9/12頁(yè) |
| 文件大?。?/td> | 89K |
| 代理商： | NCP551 |
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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| NCP551SN18T1 | 150 mA CMOS Low Iq Low-Dropout Voltage Regulator |
| NCP551SN18T1G | 150 mA CMOS Low Iq Low-Dropout Voltage Regulator |
| NCP551SN25T1 | 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 |
|---|---|
| NCP551/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:150 mA CMOS Low Iq Low-Dropout Voltage Regulator |
| NCP551_06 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:150 mA CMOS Low Iq Low−Dropout Voltage Regulator |
| NCP551SN15T1 | 功能描述:低壓差穩(wěn)壓器 - LDO 1.5V 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)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 |
| NCP551SN15T1G | 功能描述:低壓差穩(wěn)壓器 - LDO 1.5V 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)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 |
| NCP551SN18T1 | 功能描述:低壓差穩(wěn)壓器 - LDO 1.8V 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(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)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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