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參數(shù)資料
| 型號： | AMS2951CP-33 |
| 廠商： | Advanced Monolithic Systems, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 150mA LOW DROPOUT VOLTAGE REGULATOR |
| 中文描述： | 150mA的低壓差穩(wěn)壓器 |
| 文件頁數(shù)： | 10/14頁 |
| 文件大?。?/td> | 144K |
| 代理商： | AMS2951CP-33 |
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
AMS2950/AMS2951
APPLICATION HINTS
(Continued)
OUTPUT
VOLTAGE
ERROR*
INPUT
VOLTAGE
4.75V
5V
1.3V
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
AMS2951
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
AMS2951
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
AMS2951
*V
OUT
≈
V
ΙΝ
*Minimum Input-Output voltage ranges from 40mV to 400mV, depending on
load current. Current limit is typically 160 mA
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| AMS2951CP-X | 制造商:ADMOS 制造商全稱:ADMOS 功能描述:150mA LOW DROPOUT VOLTAGE REGULATOR |
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| AMS2951CS-X | 制造商:ADMOS 制造商全稱:ADMOS 功能描述:150mA LOW DROPOUT VOLTAGE REGULATOR |
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