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參數(shù)資料
| 型號： | LP2950ACZ-3.0G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 100 mA, Low Power Low Dropout Voltage Regulator |
| 中文描述： | 3 V FIXED POSITIVE LDO REGULATOR, 0.45 V DROPOUT, PBCY3 |
| 封裝： | LEAD FREE, PLASTIC, TO-92, 3 PIN |
| 文件頁數(shù)： | 12/24頁 |
| 文件大?。?/td> | 204K |
| 代理商： | LP2950ACZ-3.0G |
LP2950, LP2951, NCV2951
http://onsemi.com
12
330 k
Figure 25. Regulator with Early Warning and Auxiliary Output
+V
in
Memory
V+
1.0 F
20
5
3
Error
SD
GND
FB
4
7
6
V
O
T
2
V
out
V
in
8
1
LP2951CN
#1
1.0 F
5
3
Error
SD
GND
FB
4
7
6
V
O
T
2
V
out
V
in
8
1
LP2951CN
#2
NC
Reset
V
DD
P
Early Warning
All diodes are 1N4148.
Early Warning flag on low input voltage.
Main output latches off at lower input voltages.
Battery backup on auxiliary output.
Operation: Regulator #1’s V
out
is programmed one
diode drop above 5.0 V. Its error flag becomes active
when V
in
< 5.7 V. When V
in
drops below 5.3 V, the
error flag of regulator #2 becomes active and via Q1
latches the main output “off”. When V
in
again exceeds
5.7 V, regulator #1 is back in regulation and the early
warning signal rises, unlatching regulator #2 via D3.
D4
2.7 M
Q1
2N3906
D2
D1
D3
27 k
3.6 V
NiCad
Main
Output
Figure 26. 2.0 A Low Dropout Regulator
+V
in
V
out
@ 2.0 A
100 F
NC
NC
R2
R1
470
5
3
Error
SD
GND
FB
4
7
6
V
O
T
2
V
out
V
in
8
1
LP2951CN
MJE2955
4.7 M
Error
Flag
V
out
= 1.25V (1.0 + R1/R2)
For 5.0 V output, use internal resistors. Wire Pin 6 to 7,
and wire Pin 2 to +V
out
Bus.
20 k
47
4.7
F
Tant
0.05
680
0.033 F
2N3906
10 k
Current Limit
Section
220
1000 F
.33 F
.01
F
2N3906
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP2950ACZ5.0 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Fixed Voltage Regulator |
| LP2950ACZ-5.0 | 功能描述:低壓差穩(wěn)壓器 - LDO 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP2950ACZ-5.0 | 制造商:Texas Instruments 功能描述:IC V REG LDO +5.0V 2950 TO-92-3 |
| LP2950ACZ-5.0/LFT1 | 功能描述:低壓差穩(wěn)壓器 - LDO 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP2950ACZ-5.0/LFT2 | 功能描述:低壓差穩(wěn)壓器 - LDO 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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