78txx.pdf

(163 KB) Pobierz
214205023 UNPDF
Order this document by MC78T00/D
This family of fixed voltage regulators are monolithic integrated circuits
capable of driving loads in excess of 3.0 A. These three–terminal regulators
employ internal current limiting, thermal shutdown, and safe–area
compensation. Devices are available with improved specifications, including
a 2% output voltage tolerance, on AC–suffix 5.0, 12 and 15 V device types.
Although designed primarily as a fixed voltage regulator, these devices
can be used with external components to obtain adjustable voltages and
currents. This series of devices can be used with a series–pass transistor to
supply up to 15 A at the nominal output voltage.
•
THREE–AMPERE
POSITIVE FIXED
VOLTAGE REGULATORS
SEMICONDUCTOR
TECHNICAL DATA
Output Current in Excess of 3.0 A
•
Power Dissipation: 25 W
•
No External Components Required
•
Output Voltage Offered in 2% and 4% Tolerance*
•
Thermal Regulation is Specified
T SUFFIX
PLASTIC PACKAGE
CASE 221A
•
Internal Thermal Overload Protection
•
Internal Short Circuit Current Limiting
•
Output Transistor Safe–Area Compensation
MAXIMUM RATINGS (T A = +25 ° C, unless otherwise noted.)
Rating
Pin 1. Input
2. Ground
3. Output
1
Symbol
Value
Unit
2
3
Input Voltage (5.0 V – 12 V)
Input Voltage (15 V)
V I
35
40
Vdc
Heatsink surface is connected to Pin 2.
Power Dissipation and Thermal Characteristics
Plastic Package (Note 1)
T A = +25
P D
R
Internally Limited
65
Internally Limited
2.5
JA
P D
R
q
°
C/W
C
Thermal Resistance, Junction–to–Case
q JC
° C/W
Storage Junction Temperature
T stg
+150
° C
Operating Junction Temperature Range
(MC78T00C, AC)
T J
0 to +125
C
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
MC78T05
MC78T08
NOTES: 1. Although power dissipation is internally limited, specifications apply only
for P O 3 P max , P max = 25 W.
5.0 V
8.0 V
MC78T12
MC78T15
12 V
15 V
ORDERING INFORMATION
Simplified Application
Operating
Temperature
Range
Device
V O
Tol.
Package
Input
MC78TXX
Output
MC78TXXCT
4%
2%*
4%
2%*
T J = 0 ° to
+125 ° C
T J = – 40 ° to
+125 ° C
Plastic
Power
Plastic
Power
C in *
0.33 m F
C O **
MC78TXXACT
MC78TXXBT#
MC78TXXABT#
XX Indicates nominal voltage.
* 2% regulators available in 5, 12 and 15 V devices.
# Automotive temperature range selections are avail-
able with special test conditions and additional
tests. Contact your local Motorola sales office for
information.
A common ground is required between the input and the output voltages. The input voltage must
remain typically 2.2 V above the output voltage even during the low point on the input ripple voltage.
XX these two digits of the type number indicate voltage.
* * C in is required if regulator is located an appreciable distance from power supply filter.
** (See Applications Information for details.)
** C O is not needed for stability; however, it does improve transient response.
W Motorola, Inc. 1996
Rev 1
MOTOROLA ANALOG IC DEVICE DATA
1
C
Thermal Resistance, Junction–to–Air
T C = +25
°
°
°
214205023.010.png
MC78T00 Series
ELECTRICAL CHARACTERISTICS (V in = 10 V, I O = 3.0 A, 0 ° C 3 T J 3 125 ° C, P O 3 P max [Note 1], unless otherwise noted.)
MC78T05AC
MC78T05C
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage
(5.0 mA
V O
Vdc
3
I O
3
3.0 A, T J = +25
C)
4.9
4.8
5.0
5.0
5.1
5.2
4.8
4.75
5.0
5.0
5.2
5.25
3.0 A;
5.0 mA 3 I O 3 2.0 A, 7.3 Vdc 3 V in 3 20 Vdc)
3
I O
3
Line Regulation (Note 2)
(7.2 Vdc
Reg line
–
3.0
25
–
3.0
25
mV
3
V in
3
35 Vdc, I O = 5.0 mA, T J = +25
°
C;
7.2 Vdc
3
V in
3
35 Vdc, I O = 1.0 A, T J = +25
°
C;
8.0 Vdc
3
V in
3
12 Vdc, I O = 3.0 A, T J = +25
°
C;
7.5 Vdc 3 V in 3 20 Vdc, I O = 1.0 A)
Load Regulation (Note 2)
(5.0 mA
Reg load
mV
3
I O
3
3.0 A, T J = +25
C)
–
–
10
15
30
80
–
–
10
15
30
80
(5.0 mA 3 I O 3 3.0 A)
Thermal Regulation
(Pulse = 10 ms, P = 20 W, T A = +25 ° C)
Reg therm
–
0.001
0.01
–
0.002
0.03
%V O /W
Quiescent Current
(5.0 mA 3 I O 3 3.0 A, T J = +25 ° C)
(5.0 mA
I B
mA
–
–
3.5
4.0
5.0
6.0
–
–
3.5
4.0
5.0
6.0
3
I O
3
3.0 A)
Quiescent Current Change
(7.2 Vdc 3 V in 3 35 Vdc, I O = 5.0 mA, T J = +25 ° C;
5.0 mA 3 I O 3 3.0 A, T J = +25 ° C;
7.5 Vdc 3 V in 3 20 Vdc, I O = 1.0 A)
I B
–
0.3
1.0
–
0.3
1.0
mA
Ripple Rejection
(8.0 Vdc
RR
62
75
–
62
75
–
dB
18 Vdc, f = 120 Hz,
I O = 2.0 A, T J = 25
3
V in
3
°
C)
Dropout Voltage (I O = 3.0 A, T J = +25 ° C)
V in –V O
–
2.2
2.5
–
2.2
2.5
Vdc
Output Noise Voltage
(10 Hz 3 f 3 100 kHz, T J = +25 ° C)
V n
–
10
–
–
10
–
m
V/V O
Output Resistance (f = 1.0 kHz)
R O
–
2.0
–
–
20
–
m
Short Circuit Current Limit
(V in = 35 Vdc, T J = +25
I SC
–
1.5
–
–
1.5
–
A
°
C)
Peak Output Current (T J = +25
°
C)
I max
–
5.0
–
–
5.0
–
A
Average Temperature Coefficient of Output Voltage
(I O = 5.0 mA)
TCV O
–
0.2
–
–
0.2
–
mV/ ° C
NOTES: 1. Although power dissipation is internally limited, specifications apply only for P O
P max , P max = 25 W.
2. Line and load regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately.
Pulse testing with low duty cycle is used.
3
2
MOTOROLA ANALOG IC DEVICE DATA
°
(5.0 mA
°
D
W
214205023.011.png 214205023.012.png 214205023.013.png
MC78T00 Series
ELECTRICAL CHARACTERISTICS (V in = 13 V, I O = 3.0 A, 0 ° C 3 T J 3 125 ° C , P O 3 P max [Note 1], unless otherwise noted.)
MC78T08C
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage
(5.0 mA
V O
Vdc
3
I O
3
3.0 A, T J = +25
°
C)
7.7
7.6
8.0
8.0
8.3
8.4
3.0 A;
5.0 mA 3 I O 3 2.0 A, 10.4 Vdc 3 V in 3 23 Vdc)
3
I O
3
Line Regulation (Note 2)
(10.3 Vdc
Reg line
–
4.0
35
mV
3
V in
3
35 Vdc, I O = 5.0 mA, T J = +25
°
C
10.3 Vdc
3
V in
3
35 Vdc, I O = 1.0 A, T J = +25
°
C
11 Vdc
3
V in
3
17 Vdc, I O = 3.0 A, T J = +25
C
10.7 Vdc 3 V in 3 23 Vdc, I O = 1.0 A)
Load Regulation (Note 2)
(5.0 mA
Reg load
mV
3
I O
3
3.0 A, T J = +25
°
C)
–
–
10
15
30
80
(5.0 mA 3 I O 3 3.0 A)
Thermal Regulation
(Pulse = 10 ms, P = 20 W, T A = +25 ° C)
Reg therm
–
0.002
0.03
%V O /W
Quiescent Current
(5.0 mA 3 I O 3 3.0 A, T J = +25 ° C)
(5.0 mA
I B
mA
–
–
3.5
4.0
5.0
6.0
3
I O
3
3.0 A)
Quiescent Current Change
(10.3 Vdc 3 V in 3 35 Vdc, I O = 5.0 mA, T J = +25 ° C;
5.0 mA 3 I O 3 3.0 A, T J = +25 ° C;
10.7 Vdc 3 V in 3 23 Vdc, I O = 1.0 A)
D
I B
–
0.3
1.0
mA
Ripple Rejection
(11 Vdc
RR
60
71
–
dB
3
V in
3
21 Vdc, f = 120 Hz, I O = 2.0 A, T J = 25
C)
Dropout Voltage (I O = 3.0 A, T J = +25
°
C)
V in –V O
–
2.2
2.5
Vdc
Output Noise Voltage
(10 Hz
V n
–
10
–
m V/V O
3
f
3
100 kHz, T J = +25
°
C)
Output Resistance (f = 1.0 kHz)
R O
–
2.0
–
m W
Short Circuit Current Limit
(V in = 35 Vdc, T J = +25 ° C)
I SC
–
1.5
–
A
Peak Output Current (T J = +25 ° C)
I max
–
5.0
–
A
Average Temperature Coefficient of Output Voltage (I O = 5.0 mA)
TCV O
–
0.3
–
mV/
°
C
P max , P max = 25 W.
2. Line and load regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately.
Pulse testing with low duty cycle is used.
3
MOTOROLA ANALOG IC DEVICE DATA
3
(5.0 mA
°
°
NOTES: 1. Although power dissipation is internally limited, specifications apply only for P O
214205023.001.png 214205023.002.png 214205023.003.png
MC78T00 Series
ELECTRICAL CHARACTERISTICS (V in = 17 V, I O = 3.0 A, 0 ° C 3 T J 3 125 ° C, P O 3 P max [Note 1], unless otherwise noted.)
MC78T12AC
MC78T12C
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage
(5.0 mA
V O
Vdc
3
I O
3
3.0 A, T J = +25
°
C)
11.75
11.5
12
12
12.25
12.5
11.5
11.4
12
12
12.5
12.6
3.0 A,
5.0 mA 3 I O 3 2.0 A, 14.5 Vdc 3 V in 3 27 Vdc)
3
I O
3
Line Regulation (Note 2)
(14.5 Vdc
Reg line
–
6.0
45
–
6.0
45
mV
3
V in
3
35 Vdc, I O = 5.0 mA, T J = +25
°
C;
14.5 Vdc
3
V in
3
35 Vdc, I O = 1.0 A, T J = +25
°
C;
16 Vdc
3
V in
3
22 Vdc, I O = 3.0 A, T J = +25
°
C;
14.9 Vdc 3 V in 3 27 Vdc, I O = 1.0 A)
Load Regulation (Note 2)
(5.0 mA
Reg load
mV
3
I O
3
3.0 A, T J = +25
°
C)
–
–
10
15
30
80
–
–
10
15
30
80
(5.0 mA 3 I O 3 3.0 A)
Thermal Regulation
(Pulse = 10 ms, P = 20 W, T A = +25 ° C)
Reg therm
–
0.001
0.01
–
0.002
0.03
%V O /W
Quiescent Current
(5.0 mA 3 I O 3 3.0 A, T J = +25 ° C)
(5.0 mA
I B
mA
–
–
3.5
4.0
5.0
6.0
–
–
3.5
4.0
5.0
6.0
3
I O
3
3.0 A)
Quiescent Current Change
(14.5 Vdc 3 V in 3 35 Vdc, I O = 5.0 mA, T J = +25 ° C;
5.0 mA 3 I O 3 3.0 A, T J = +25 ° C;
14.9 Vdc 3 V in 3 27 Vdc, I O = 1.0 A)
D
I B
–
0.3
1.0
–
0.3
1.0
mA
Ripple Rejection
(15 Vdc
RR
57
67
–
57
67
–
dB
25 Vdc, f = 120 Hz,
I O = 2.0 A, T J = 25
3
V in
3
°
C)
Dropout Voltage (I O = 3.0 A, T J = +25 ° C)
V in – V O
–
2.2
2.5
–
2.2
2.5
Vdc
Output Noise Voltage
(10 Hz 3 f 3 100 kHz, T J = +25 ° C)
V n
–
10
–
–
10
–
m
V/V O
Output Resistance (f = 1.0 kHz)
R O
–
2.0
–
–
20
–
m
W
Short Circuit Current Limit
(V in = 35 Vdc, T J = +25
I SC
–
1.5
–
–
1.5
–
A
°
C)
Peak Output Current (T J = +25
°
C)
I max
–
5.0
–
–
5.0
–
A
Average Temperature Coefficient
of Output Voltage (I O = 5.0 mA)
TCV O
–
0.5
–
–
0.5
–
mV/ ° C
NOTES: 1. Although power dissipation is internally limited, specifications apply only for P O
P max , P max = 25 W.
2. Line and load regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately.
Pulse testing with low duty cycle is used.
3
4
MOTOROLA ANALOG IC DEVICE DATA
(5.0 mA
214205023.004.png 214205023.005.png 214205023.006.png
MC78T00 Series
ELECTRICAL CHARACTERISTICS (V in = 20 V, I O = 3.0 A, 0 ° C 3 T J 3 125 ° C, P O 3 P max [Note 1], unless otherwise noted.)
MC78T15AC
MC78T15C
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage
(5.0 mA
V O
Vdc
3
I O
3
3.0 A, T J = +25
C)
14.7
14.4
15
15
15.3
15.6
14.4
14.25
15
15
15.6
15.75
3.0 A;
5.0 mA 3 I O 3 2.0 A, 17.5 Vdc 3 V in 3 30 Vdc)
3
I O
3
Line Regulation (Note 2)
(17.6 Vdc
Reg line
–
7.5
55
–
7.5
55
mV
3
V in
3
40 Vdc, I O = 5.0 mA, T J = +25
°
C;
17.6 Vdc
3
V in
3
40 Vdc, I O = 1.0 A, T J = +25
°
C;
20 Vdc
3
V in
3
26 Vdc, I O = 3.0 A, T J = +25
°
C;
18 Vdc 3 V in 3 30 Vdc, I O = 1.0 A)
Load Regulation (Note 2)
(5.0 mA
Reg load
mV
3
I O
3
3.0 A, T J = +25
C)
–
–
10
15
30
80
–
–
10
15
30
80
(5.0 mA 3 I O 3 3.0 A)
Thermal Regulation
(Pulse = 10 ms, P = 20 W, T A = +25 ° C)
Reg therm
–
0.001
0.01
–
0.002
0.03
%V O /W
Quiescent Current
(5.0 mA 3 I O 3 3.0 A, T J = +25 ° C)
(5.0 mA
I B
mA
–
–
3.5
4.0
5.0
6.0
–
–
3.5
4.0
5.0
6.0
3
I O
3
3.0 A)
Quiescent Current Change
(17.6 Vdc 3 V in 3 40 Vdc, I O = 5.0 mA, T J = +25 ° C;
5.0 mA 3 I O 3 3.0 A, T J = +25 ° C;
18 Vdc 3 V in 3 30 Vdc, I O = 1.0 A)
I B
–
0.3
1.0
–
0.3
1.0
mA
Ripple Rejection
(18.5 Vdc
RR
55
65
–
55
65
–
dB
28.5 Vdc, f = 120 Hz,
I O = 2.0 A, T J = 25
3
V in
3
°
C)
Dropout Voltage (I O = 3.0 A, T J = +25 ° C)
V in –V O
–
2.2
2.5
–
2.2
2.5
Vdc
Output Noise Voltage
(10 Hz 3 f 3 100 kHz, T J = +25 ° C)
V n
–
10
–
–
10
–
m
V/V O
Output Resistance (f = 1.0 kHz)
R O
–
2.0
–
–
20
–
m
W
Short Circuit Current Limit
(V in = 40 Vdc, T J = +25
I SC
–
1.0
–
–
1.0
–
A
°
C)
Peak Output Current (T J = +25
°
C)
I max
–
5.0
–
–
5.0
–
A
Average Temperature Coefficient of Output Voltage
(I O = 5.0 mA)
TCV O
–
0.6
–
–
0.6
–
mV/ ° C
P max , P max = 25 W.
2. Line and load regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account separately.
Pulse testing with low duty cycle is used.
3
MOTOROLA ANALOG IC DEVICE DATA
5
°
(5.0 mA
°
D
NOTES: 1. Although power dissipation is internally limited, specifications apply only for P O
214205023.007.png 214205023.008.png 214205023.009.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin