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| 型号： | LP2950CZ-5.0 |
| 厂商： | ON Semiconductor |
| 文件页数： | 12/22页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V .1A TO92 |
| 产品变化通告： | Product Discontinuation 27/Jun/2007 |
| 标准包装： | 50 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 5V |
| 输入电压： | 最高 30V |
| 电压 - 压降（标准）： | 0.35V @ 100mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 100mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-226-3、TO-92-3 标准主体 |
| 供应商设备封装： | TO-92-3 |
| 包装： | 管件 |
| 其它名称： | LP2950CZ-5.0OS |
LP2950, LP2951, NCV2951
+V in
8
#1
V O T
NC
5
3
V in
Error V out
SNS
LP2951CN
SD
1
2
6
D1
D2
1.0 m F
Memory
V+
20
3.6 V
NiCad
GND FB
4 7
27 k
D3
Early Warning
All diodes are 1N4148.
Q1
2.7 M
D4
Reset
V DD
m P
Early Warning flag on low input voltage.
Main output latches off at lower input voltages.
#2
V O T
2N3906
330 k
5
3
8
V in
Error V out
SNS
LP2951CN
SD
GND FB
1
2
6
Main
Output
1.0 m F
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.
4
7
Figure 25. Regulator with Early Warning and Auxiliary Output
Current Limit
Section
+V in
680
2N3906
470
0.05
1000 m F
2N3906
MJE2955
10 k
.33 m F
4.7 M
8
Error
Flag
5
Error
V in
V out
1
V O T
220
3
SNS
LP2951CN
SD
2
NC
6 NC
47
4.7 m F
Tant
V out @ 2.0 A
100 m F
20 k
GND FB
.01 m F
R1
4 7
0.033 m F
R2
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.
Figure 26. 2.0 A Low Dropout Regulator
http://onsemi.com
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LP2950G-XX-D08-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:100 mA LOW-DROPOUT VOLTAGE REGULATOR |
| LP2950G-XX-S08-R | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:100 mA LOW-DROPOUT VOLTAGE REGULATOR |
| LP2950G-XX-S08-T | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:100 mA LOW-DROPOUT VOLTAGE REGULATOR |
| LP2950G-XX-T92-B | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:100 mA LOW-DROPOUT VOLTAGE REGULATOR |
| LP2950G-XX-T92-K | 制造商:UTC-IC 制造商全称:UTC-IC 功能描述:100 mA LOW-DROPOUT VOLTAGE REGULATOR |
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