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參數(shù)資料
| 型號： | 8181 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | LOW-DROPOUT, 5 V REGULATOR . HIGH EFFICIENCY |
| 中文描述： | 低壓差，5 V穩(wěn)壓器。高效 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 103K |
| 代理商： | 8181 |
8181
LOW-DROPOUT,
5 V REGULATOR
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright 1992, 1995 Allegro MicroSystems, Inc.
Maximum Allowable Output Current in Milliamperes
with V
I
= 10 V, T
J
= 150
°
C*
dc (Duty Cycle)
T
A
100%
90%
80%
70%
60%
50%
40%
30%
20%
25
°
C
370
415
465
530
620
745
930
1000
1000
50
°
C
295
330
370
425
495
595
745
995
1000
70
°
C
235
265
295
340
395
475
595
795
1000
85
°
C
190
215
240
275
320
385
485
645
970
* I
O
= (T
J
- T
A
)/([V
I
- V
O
] R
θ
JA
dc) = (150 - T
A
)/(5 67 dc)
Output current rating can be increased (to 1 A maximum) by heat sinking or reducing the input voltage. With an infinite heat sink, R
= R
=
6
°
C/W. Conditions that produce excessive junction temperature will activate device thermal shutdown circuitry. These conditions can be tolerated
but should be avoided.
FUNCTIONAL BLOCK DIAGRAM
12-13
Dwg. FS-012
BIAS
DRIVE
E
T
P
BANDGAP
REF.
ERROR
AMP
4-5
IN
ENABLE
OUT
IN
OUT
7
8
15
16
6
MAXIMUM ALLOWABLE OUTPUT CURRENT with device mounted on 2.24" x 2.24"
(56.9 mm x 56.9 mm) solder-coated copper-clad board in still air.
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