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參數(shù)資料
| 型號： | LP2950AT-3.0 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 100 mA Low Dropout Voltage Regulators |
| 中文描述： | 一〇 〇毫安低壓差穩(wěn)壓器 |
| 文件頁數(shù)： | 10/14頁 |
| 文件大小： | 142K |
| 代理商： | LP2950AT-3.0 |
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
LP2950/LP2951
APPLICATION HINTS
(Continued)
OUTPUT
VOLTAGE
ERROR*
INPUT
VOLTAGE
4.75V
5V
R
1
ERROR*
ERROR
OUPUT
**SHUTDOWN
INPUT
GND
FB
V
OUT
V
REF
R
2
SD
1.23V
7
4
3
8
1
5
+V
IN
+V
IN
V
OUT
1.2
30V
3.3
μ
F
.01
μ
F
+
*
100k
LP2951
FIGURE 1. ERROR Output Timing
*When
V
IN
1.3V the error flag pin becomes a high impedance,
and the error flag voltage rises to its pull-up voltage. Using V
out
as the pull-up voltage (see Figure 2), rather than an external 5V
source, will keep the error flag voltage under 1.2V (typ.) in this
condition. The user may wish to drive down the error flag
voltage using equal value resistors (10 k
suggested), to ensure
a low-level logic signal during any fault condition, while still
allowing a valid high logic level during normal operation.
FIGURE 2. Adjustable Regulator
*See Application Hints.
V
out
= V
REF
×
(1 + R
1
/ R
2
)
**Drive with TTL- high to shut down. Ground or leave if shutdown
feature is not used.
Note:
Pins 2 and 6 are left open.
TYPICAL APPLICATIONS
300 mA Regulator with 0.75 Dropout
Wide Input Voltage Range Current Limiter
UNREGULATED
INPUT
LOAD
50mA TO
300mA
GND
FB
OUT
IN
4
7
6
2
1
8
V
TAP
LP2951
2N5432 (2)
SENSE
5V OUTPUT
4.7μ
F
27
k
330
ERROR
ERROR
OUPUT
SHUTDOWN
INPUT
GND
FB
V
OUT
SD
7
4
3
8
1
5
+V
IN
+V
IN
LP2951
*V
OUT
≈
V
ΙΝ
*Minimum Input-Output voltage ranges from 40mV to 400mV, depending on load
current. Current limit is typically 160 mA
相關PDF資料 |
PDF描述 |
|---|---|
| LP2950CT-3.0 | 100 mA Low Dropout Voltage Regulators |
| LP2950AS | 100 mA Low Dropout Voltage Regulators |
| LP2950AT | 100 mA Low Dropout Voltage Regulators |
| LP2950AT-3.3 | 100 mA Low Dropout Voltage Regulators |
| LP2950AT-5.0 | 100 mA Low Dropout Voltage Regulators |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LP2950AT-5.0 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:100 mA Low Dropout Voltage Regulators |
| LP2950BCT | 制造商:FCI 制造商全稱:First Components International 功能描述:150mA Low Drop Out Voltage Regulators |
| LP2950C | 制造商:CALOGIC 制造商全稱:CALOGIC 功能描述:100mA Low Dropout Voltage Regulators |
| LP2950C/AC | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators |
| LP2950CDT | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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