Fairchild MC78M08CDT 3-terminal 0.5a positive voltage regulator Datasheet

www.fairchildsemi.com
MC78MXX/LM78MXX
3-Terminal 0.5A Positive Voltage Regulator
Features
Description
•
•
•
•
•
The MC78MXX/LM78MXX series of three-terminal
positive regulators are available in the TO-220/D-PAK
package with several fixed output voltages making it useful
in a wide range of applications.
Output Current up to 0.5A
Output Voltages of 5, 6, 8, 12, 15, 18, 24V
Thermal Overload Protection
Short Circuit Protection
Output Transistor Safe Operating Area (SOA)Protection
TO-220
GND
1
D-PAK
GND
1
1. Input 2. GND 3. Output
Internal Block Digram
INPUT
SERIES
PASS
ELEMENT
1
SOA
PROTECTION
CURRENT
GENERATOR
STARTING
CIRCUIT
REFERENCE
VOLTAGE
OUTPUT
3
R1
ERROR
AMPLIFIER
R2
THERMAL
PROTECTION
GND
2
Rev. 1.0.5
©2002 Fairchild Semiconductor Corporation
MC78MXX/LM78MXX
Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
VI
VI
35
40
V
V
Thermal Resistance Junction-Case (Note1)
TO-220 (Tc = +25°C)
RθJC
2.5
°C/W
Thermal Resistance Junction-Air (Note1, 2)
TO-220 (Ta = +25°C)
D-PAK (Ta = +25°C)
RθJA
66
92
°C/W
Operating Junction Temperature Range
TOPR
0 ~ +150
°C
Storage Temperature Range
TSTG
-65 ~ +150
°C
Input Voltage (for VO = 5V to 18V)
(for VO = 24V)
Note:
1. Thermal resistance test board
Size: 76.2mm * 114.3mm * 1.6mm(1S0P)
JEDEC standard: JESD51-3, JESD51-7
2. Assume no ambient airflow
Electrical Characteristics (MC78M05/LM78M05)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=10V, unless otherwise specified, CI = 0.33µF, CO=0.1µF)
Parameter
Output Voltage
Symbol
VO
Line Regulation (Note3)
∆VO
Load Regulation (Note3)
∆VO
Quiescent Current
Quiescent Current Change
Output Voltage Drift
IQ
∆IQ
∆V/∆T
Conditions
Min.
Typ.
Max.
TJ = +25°C
4.8
5
5.2
IO = 5mA to 350mA
VI = 7V to 20V
4.75
5
5.25
VI = 7V to 25V
-
-
100
VI = 8V to 25V
-
-
50
IO = 5mA to 0.5A, TJ =+25°C
-
-
100
IO = 5mA to 200mA, TJ =+25 °C
-
-
50
TJ =+25°C
-
4.0
6.0
IO = 5mA to 350mA
-
-
0.5
IO = 200mA
VI = 8V to 25V
-
-
0.8
IO = 5mA
TJ = 0 to +125°C
-
-0.5
-
mV/°C
IO = 200mA
TJ =+25°C
Unit
V
mV
mV
mA
mA
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
40
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 8V to 18V, TJ =+25 °C
-
80
-
dB
Dropout Voltage
VD
TJ =+25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ =+25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ =+25°C
-
700
-
mA
Note:
3. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
2
MC78MXX/LM78MXX
Electrical Characteristics (MC78M06) (Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI =11V, unless otherwise specified, CI=0.33µF, CO=0.1µF)
Parameter
Output Voltage
Symbol
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VO
Quiescent Current
Quiescent Current Change
Output Voltage Drift
IQ
∆IQ
∆V/∆T
Conditions
Min.
Typ.
Max.
TJ = +25°C
5.75
6
6.25
IO = 5mA to 350mA
VI = 8V to 21V
5.7
6
6.3
VI = 8V to 25V
-
-
100
VI = 9V to 25V
-
-
50
IO = 5mA to 0.5A, TJ = +25°C
-
-
120
IO = 5mA to 200mA, TJ = +25°C
-
-
60
TJ = +25°C
-
4.0
6.0
IO = 5mA to 350mA
-
-
0.5
IO = 200mA
VI = 9V to 25V
-
-
0.8
IO = 5mA
TJ = 0 to +125°C
-
-0.5
-
mV/°C
IO = 200mA
TJ = +25°C
Unit
V
mV
mV
mA
mA
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
45
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 9V to 19V, TJ =+25 °C
-
80
-
dB
Dropout Voltage
VD
TJ =+25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI= 35V
-
300
-
mA
Peak Current
IPK
TJ =+25°C
-
700
-
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
3
MC78MXX/LM78MXX
Electrical Characteristics (MC78M08) (Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=14V, unless otherwise specified, CI = 0.33µF, CO=0.1µF)
Parameter
Output Voltage
Symbol
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VO
Quiescent Current
IQ
Conditions
Min.
Typ.
Max.
TJ =+25°C
7.7
8
8.3
IO = 5mA to 350mA
VI = 10.5V to 23V
7.6
8
8.4
VI = 10.5V to 25V
-
-
100
VI = 11V to 25V
-
-
50
IO = 5mA to 0.5A, TJ =+25°C
-
-
160
IO = 5mA to 200mA, TJ =+25°C
-
-
80
TJ = +25°C
-
4.0
6.0
IO = 5mA to 350mA
-
-
0.5
IO = 200mA
VI = 10.5V to 25V
-
-
0.8
IO = 200mA
TJ =+25°C
Unit
V
mV
mV
mA
Quiescent Current Change
∆IQ
Output Voltage Drift
RR
IO = 5mA
TJ = 0 to +125°C
-
−0.5
-
mV/°C
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
52
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 11.5V to 21.5V, TJ =+25 °C
-
80
-
dB
Dropout Voltage
VD
TJ = +25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ = +25°C
-
700
-
mA
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
4
MC78MXX/LM78MXX
Electrical Characteristics (MC78M12) (Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=19V, unless otherwise specified, CI =0.33µF, CO=0.1µF)
Parameter
Output Voltage
Symbol
Min.
Typ.
Max.
TJ = +25°C
11.5
12
12.5
IO = 5mA to 350mA
VI = 14.5V to 27V
11.4
12
12.6
VI = 14.5V to 30V
-
-
100
VI = 16V to 30V
-
-
50
IO = 5mA to 0.5A, TJ = +25°C
-
-
240
IO = 5mA to 200mA, TJ = +25°C
-
-
120
TJ =+25°C
-
4.1
6.0
IO = 5mA to 350mA
-
-
0.5
∆IQ
IO = 200mA
VI = 14.5V to 30V
-
-
0.8
∆V/∆T
IO = 5mA
TJ = 0 to +125°C
-
-0.5
-
mV/°C
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VO
Quiescent Current
Quiescent Current Change
Output Voltage Drift
IQ
Conditions
IO = 200mA
TJ = +25°C
Unit
V
mV
mV
mA
mA
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
75
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 15V to 25V, TJ =+25 °C
-
80
-
dB
Dropout Voltage
VD
TJ =+25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ = +25°C
-
700
-
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
5
MC78MXX/LM78MXX
Electrical Characteristics (MC78M15) (Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=23V, unless otherwise specified, CI =0.33µF, CO=0.1µF)
Parameter
Output Voltage
Symbol
Min.
Typ.
Max.
TJ = +25°C
14.4
15
15.6
IO = 5mA to 350mA
VI = 17.5V to 30V
14.25
15
15.75
VI = 17.5V to 30V
-
-
100
VI = 20V to 30V
-
-
50
IO = 5mA to 0.5A, TJ =+25°C
-
-
300
IO = 5mA to 200mA, TJ =+25°C
-
-
150
TJ = +25°C
-
4.1
6.0
IO = 5mA to 350mA
-
-
0.5
∆IQ
IO = 200mA
VI = 17.5V to 30V
-
-
0.8
∆V/∆T
IO = 5mA
TJ = 0 to +125°C
-
-1
-
mV/°C
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VO
Quiescent Current
Quiescent Current Change
Output Voltage Drift
IQ
Conditions
IO = 200mA
TJ =+25°C
Unit
V
mV
mV
mA
mA
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
100
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 18.5V to 28.5V, TJ =+25 °C
-
70
-
dB
Dropout Voltage
VD
TJ =+25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ = +25°C
-
700
-
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
6
MC78MXX/LM78MXX
Electrical Characteristics (MC78M18) (Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=26V, unless otherwise specified, CI =0.33µF, CO=0.1µF)
Parameter
Min. Typ.
Max.
TJ = +25°C
17.3
18
18.7
IO = 5mA to 350mA
VI = 20.5V to 33V
17.1
18
18.9
VI = 21V to 33V
-
-
100
VI = 24V to 33V
-
-
50
IO = 5mA to 0.5A, TJ = +25°C
-
-
360
IO = 5mA to 200mA, TJ = +25°C
-
-
180
TJ = +25°C
-
4.2
6.0
IO = 5mA to 350mA
-
-
0.5
IO = 200mA
VI = 21V to 33V
-
-
0.8
IO = 5mATJ = 0 to 125°C
-
-1.1
-
mV/°C
VN
f = 10Hz to 100kHz
-
100
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO= 300mA , VI = 22V to 32V
TJ =+25 °C
-
70
-
dB
Dropout Voltage
VD
TJ = +25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ = +25°C
-
700
-
mA
Output Voltage
Symbol
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VΟ
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
IQ
∆IQ
∆V/∆T
Conditions
IO = 200mA
TJ = +25°C
Unit
V
mV
mV
mA
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
7
MC78MXX/LM78MXX
Electrical Characteristics (MC78M24) (Continued)
(Refer to the test circuits, 0 < TJ < +125°C, IO=350mA, VI=33V, unless otherwise specified, CI =0.33µF, CO=0.1µF)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
23
24
25
22.8
24
25.2
IO = 200mA VI = 27V to 38V
TJ =+25°C VI = 28V to 38V
-
-
100
-
-
50
IO = 5mA to 0.5A, TJ =+25°C
-
-
480
IO = 5mA to 200mA, TJ =+25°C
-
-
240
TJ = +25°C
-
4.2
6.0
IO = 5mA to 350mA
-
-
0.5
∆IQ
IO = 200mA
VI = 27V to 38V
-
-
0.8
∆V/∆T
IO = 5mA
TJ = 0 to +125°C
-
-1.2
-
mV/°C
TJ =+25°C
Output Voltage
VO
Line Regulation (Note1)
∆VO
Load Regulation (Note1)
∆VO
Quiescent Current
Quiescent Current Change
Output Voltage Drift
IQ
IO = 5mA to 350mA
VI = 27V to 38V
Unit
V
mV
mV
mA
mA
Output Noise Voltage
VN
f = 10Hz to 100kHz
-
170
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, IO = 300mA
VI = 28V to 38V, TJ =+25 °C
-
70
-
dB
Dropout Voltage
VD
TJ = +25°C, IO = 500mA
-
2
-
V
Short Circuit Current
ISC
TJ = +25°C, VI = 35V
-
300
-
mA
Peak Current
IPK
TJ = +25°C
-
700
-
mA
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
8
MC78MXX/LM78MXX
Typical Applications
1
VI
CI
3
MC78MXX
LM78MXX
VO
2
CO
0.3µF
0.1µF
Figure 1. Fixed Output Regulator
1
VI
CI
3
MC78MXX
LM78MXX
2
0.33µF
CO
VXX
0.1µF
IO
IO
R1
Vxx
IO = R1 +IO
Figure 2. Constant Current Regulator
Notes:
1. To specify an output voltage, substitute voltage value for "XX"
2. Although no output capacitor is needed for stability, it does improve transient response.
3. CI is required if regulator is located an appreciable distance from power Supply filter
1
VI
CI
MC78MXX
LM78MXX
2
0.33µF
IO
3
CO
VO
VXX
R1
0.1µF
IR1 ≥ 5IO
VO = VXX (1+R2/R1) +IOR2
R2
Figure 3. Circuit for Increasing Output Voltage
9
MC78MXX/LM78MXX
1
VI
MC78M05
LM78M05
3
VO
2
CI
CO
0.33µF
2
7
6
0.1µF
LM741
3
10kΩ
4
Figure 4. Adjustable Output Regulator (7 to 30V)
13V < VI < 25V
1
VI
C1
0.33µF
MC78M05
LM78M05
3
VO
2
VXX
R4
910Ω
R5
9.1kΩ
6
-7 < -VI < 17V
4
Figure 5. 0.5 to 10V Regulator
10
C2
7 _ 2
LM741
+ 3 R3
R1
0.1µF
10kΩ
VO = Vxx
R4
R1
MC78MXX/LM78MXX
Mechanical Dimensions
Package
Dimensions in millimeters
TO-220
4.50 ±0.20
2.80 ±0.10
(3.00)
+0.10
1.30 –0.05
18.95MAX.
(3.70)
ø3.60 ±0.10
15.90 ±0.20
1.30 ±0.10
(8.70)
(1.46)
9.20 ±0.20
(1.70)
9.90 ±0.20
1.52 ±0.10
0.80 ±0.10
2.54TYP
[2.54 ±0.20]
10.08 ±0.30
(1.00)
13.08 ±0.20
)
(45°
1.27 ±0.10
+0.10
0.50 –0.05
2.40 ±0.20
2.54TYP
[2.54 ±0.20]
10.00 ±0.20
11
MC78MXX/LM78MXX
Mechanical Dimensions (Continued)
Package
Dimensions in millimeters
D-PAK
2.30TYP
[2.30±0.20]
MIN0.55
0.91 ±0.10
0.50 ±0.10
9.50 ±0.30
(0.50)
2.30 ±0.10
0.89 ±0.10
MAX0.96
(4.34)
2.70 ±0.20
0.80 ±0.20
0.60 ±0.20
(0.50)
6.10 ±0.20
5.34 ±0.30
0.70 ±0.20
6.60 ±0.20
0.76 ±0.10
0.50 ±0.10
1.02 ±0.20
2.30TYP
[2.30±0.20]
2.30 ±0.20
0.76 ±0.10
12
(1.00)
(0.90)
(3.05)
(2XR0.25)
(0.10)
2.70 ±0.20
6.10 ±0.20
9.50 ±0.30
(5.04)
(1.50)
(0.70)
6.60 ±0.20
(5.34)
MC78MXX/LM78MXX
Ordering Information
Product Number
Package
Operating Temperature
LM78M05CT
TO-220
0 ~ +125°C
Product Number
Package
Operating Temperature
MC78M05CT
MC78M06CT
MC78M08CT
MC78M12CT
TO-220
MC78M15CT
0 ~ +125°C
MC78M18CT
MC78M24CT
MC78M05CDT
MC78M06CDT
MC78M08CDT
D-PAK
MC78M12CDT
13
MC78MXX/LM78MXX
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
11/12/02 0.0m 001
Stock#DSxxxxxxxx
 2002 Fairchild Semiconductor Corporation
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