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A4481 Datasheet(PDF) 5 Page - Allegro MicroSystems

Part # A4481
Description  Foldback short-circuit protection
Download  10 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A4481 Datasheet(HTML) 5 Page - Allegro MicroSystems

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5 VOUT, 50 mAAutomotive Linear Regulator
with 50 V Load Dump and Short-to-Battery Protection
A4481
5
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
TYPICAL PERFORMANCE CHARACTERISTICS
4.95
4.96
4.97
4.98
4.99
5
5.01
5.02
5.03
5.04
5.05
-50
-25
0
25
50
75
100 125 150
Temperature (°C)
Output Voltage vs. Temperature
0
20
40
60
80
100
120
140
160
0
10
20
30
40
50
Output Current (mA)
Dropout Voltage vs. Output Current
0
10
20
30
40
50
60
70
80
102
103
104
105
106
107
Frequency (Hz)
Ripple Rejection
Load Transient Response
(VIN = 12 V, IOUT = 5 mA to 50 mA, COUT = 4.7 µF)
Load Dump Characteristics
(VIN = 12 to 50 V, IOUT = 50 mA, COUT = 4.7 µF)
Foldback Current Limit
Output Current (mA)
0
10
20
30
40
50
60
70
80
90
6.00
5.00
4.00
3.00
2.00
1.00
0.00
Time (µs)
0
100
200
300
400
500
600
700
800
900 1000
0 A
5 V
Time (ms)
0
100 200 300 400 500 600 700 800 900 1000
0 V
5 V


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