參數(shù)資料
型號(hào)： μA7812
廠商： Texas Instruments, Inc.
英文描述： General Purpose, High Current Positive-Voltage Regulator(12V，通用大電流正電壓穩(wěn)壓器)
中文描述： 通用，高電流正電壓穩(wěn)壓器（12V的，通用大電流正電壓穩(wěn)壓器）
文件頁(yè)數(shù)： 4/19頁(yè)
文件大?。?/td> 481K
代理商： ΜA7812
μ
A7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056B – MAY 1976 – REVISED OCTOBER 1996
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating temperature ranges (unless otherwise noted)
Input voltage, V
I
:
μ
A7824C
40 V
35 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation at (or below) T
A
= 25
°
C (see Note 1)
Continuous total power dissipation at (or below) T
C
= 90
°
C (see Note 1)
Operating free-air, T
A
, case, T
C
, or virtual junction, T
J
, temperature range
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
All others
See Disipation Rating Tables
See Disipation Rating Tables
. . . . . . . . . . . . . . . . .
. . . .
. . . .
–40 to 150
°
C
–65 to 150
°
C
260
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: For operation above 25
°
C free-air or 90
°
C case temperature, refer to Figure 1 and Figure 2. To avoid exceeding the design maximum
virtual junction temperature, these ratings should not be exceeded. Due to variations in individual device electrical characteristics and
thermal resistance, the built-in thermal overload protection may be activated at power levels slightly above or below the rated dissipation.
DISSIPATION RATING TABLE — FREE-AIR TEMPERATURE
PACKAGE
TA
≤
25
°
C
POWER RATING
2000 mW
1900 mW
DERATING FACTOR
ABOVE TA = 25
°
C
16.0 mW/
°
C
15.2 mW/
°
C
TA = 70
°
C
POWER RATING
1280 mW
1216 mW
TA = 105
°
C
POWER RATING
720 mW
684 mW
TA = 125
°
C
POWER RATING
400 mW
380 mW
KC
KTE
DISSIPATION RATING TABLE — CASE TEMPERATURE
PACKAGE
TC
≤
90
°
C
POWER RATING
15000 mW
14300 mW
DERATING FACTOR
ABOVE TC = 90
°
C
250.0 mW/
°
C
238.0 mW/
°
C
TA = 125
°
C
POWER RATING
6250 mW
5970 mW
KC
KTE
Derating factor = 16 mW/
°
C
R
θ
JA
≈
62.5
°
C/W
1000
800
400
200
0
1800
600
25
1400
1200
1600
FREE-AIR TEMPERATURE
DISSIPATATION DERATING CURVE
2000
T
A
– Free-Air Temperature –
°
C
M
CASE TEMPERATURE
DISSIPATION DERATING CURVE
M
T
C
– Case Temperature –
°
C
8
4
2
0
25
50
75
100
12
14
16
125
150
10
6
50
75
100
125
150
Derating factor = 0.25 W/
°
C above 90
°
C
R
θ
JA
≈
4
°
C/W
Figure 1
Figure 2
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