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MC78MXX/LM78MXX
3-Terminal 0.5A Positive Voltage Regulator
Features
* * * * * Output Current up to 0.5A Output Voltages of 5, 6, 8, 10, 12, 15, 18, 20, 24V Thermal Overload Protection Short Circuit Protection Output Transistor Safe Operating Area (SOA)Protection
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.
TO-220
1
D-PAK
1
1. Input 2. GND 3. Output
Internal Block Digram
Rev. 1.0.1
(c)2001 Fairchild Semiconductor Corporation
MC78MXX/LM78MXX
Absolute Maximum Ratings
Parameter Input Voltage (for VO = 5V to 18V) (for VO = 20V to 24V) Thermal Resistance Junction-Cases (TO-220) Thermal Resistance Junction-Air (TO-220 Package) Operating Temperature Range MC78MXX/LM78MXX Storage Temperature Range Symbol VI VI RJC RJA TOPR TSTG Value 35 40 5 65 0~ + 125 -65~ + 150 Unit V V C/W C/W C C
Electrical Characteristics (MC78M05/LM78M05)
(Refer to the test circuits, 0 < TJ < +125C, IO=350mA, VI=10V, unless otherwise specified, CI = 0.33F, CO=0.1F) Parameter Output Voltage Symbol TJ=+25C VO IO = 5mA to 350mA VI= 7V to 20V IO = 200mA TJ =+25C VI= 7V to 25V VI = 8V to 25V Conditions Min. 4.8 4.75 62 Typ. 5 5 4.0 -0.5 40 2 300 700 Max. 5.2 5.25 100 50 100 50 6.0 0.5 0.8 mA V Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change
VO VO IQ IQ V/T VN RR VD ISC IPK
mV mV mA
IO = 5mA to 0.5A, TJ =+25C IO = 5mA to 200mA, TJ =+25 C TJ=+25C IO = 5mA to 350mA IO = 200mA VI = 8V to 25V IO = 5mA TJ = 0 to +125C f = 10Hz to 100KHz f = 120Hz, IO = 300mA VI = 8V to 18V TJ =+25C, IO = 500mA TJ=+25C, VI= 35V TJ =+25C
Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
mV/C
V/Vo
dB V 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.
2
MC78MXX/LM78MXX
Electrical Characteristics (MC78M06)
(Refer to the test circuits, 0 < TJ < +125C, IO=350mA, VI =11V, unless otherwise specified, CI=0.33F, CO=0.1F) Parameter Output Voltage Symbol TJ=+25C VO IO = 5mA to 350mA VI= 8V to 21V IO = 200mA TJ =+25C VI= 8V to 25V VI = 9V to 25V Conditions Min. 5.75 5.7 59 Typ. 6 6 4.0 - 0.5 45 2 300 700 Max. 6.25 6.3 100 50 120 60 6.0 0.5 0.8 mA V Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change
VO VO IQ IQ V/T VN RR VD ISC IPK
mV mV mA
IO = 5mA to 0.5A, TJ =+25C IO = 5mA to 200mA, TJ =+25C TJ=+25C IO = 5mA to 350mA IO = 200mA VI = 9V to 25V IO = 5mA TJ = 0 to +125C f = 10Hz to 100KHz f = 120Hz, IO = 300mA VI = 9V to 19V TJ =+25C, IO = 500mA TJ= +25C, VI= 35V TJ =+25C
Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
mV/C
V/Vo
dB V 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.
3
MC78MXX/LM78MXX
Electrical Characteristics (MC78M08)
(Refer to the test circuits, 0 < TJ < +125C, IO=350mA, VI=14V, unless otherwise specified, CI = 0.33F, CO=0.1F) Parameter Output Voltage Symbol TJ=+25 C VO IO = 5mA to 350mA VI= 10.5V to 23V IO = 200mA TJ =+25C VI= 10.5V to 25V VI = 11V to 25V Conditions Min. 7.7 7.6 56 Typ. 8 8 4.0 -0.5 52 2 300 700 Max. 8.3 8.4 100 50 160 80 6.0 0.5 0.8 mA V Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change
VO VO IQ IQ
mV mV mA
IO = 5mA to 0.5A, TJ =+25C IO = 5mA to 200mA, TJ =+25C TJ=+25C IO = 5mA to 350mA IO = 200mA VI = 10.5V to 25V IO = 5mA TJ = 0 to +125C f = 10Hz to 100KHz f = 120Hz, IO = 300mA VI = 11.5V to 21.5V TJ =+25C, IO = 500mA TJ =+25C, VI= 35V TJ =+25C
Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
RR VN RR VD ISC IPK
mV/C
V/Vo
dB V 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 (MC78M10)
(Refer to the test circuits, 0 < TJ < +125C, IO=350mA, VI=14V, unless otherwise specified, CI =0.33F, CO=0.1F) Parameter Output Voltage Symbol VO Conditions TJ= +25C IO = 5mA to 350mA VI= 12.5V to 25V IO = 200mA TJ =+25C VI= 12.5V to 25V VI = 13V to 25V Min. 9.6 9.5 55 Typ. 10 10 4.1 -0.5 65 2 300 700 Max. 10.4 10.5 100 50 200 100 6.0 0.5 0.8 mA V Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change
VO VO IQ IQ V/T VN RR VD ISC IPK
mV mV mA
IO = 5mA to 0.5A, TJ =+25C IO = 5mA to 200mA, TJ =+25C TJ=+25C IO = 5mA to 350mA IO = 200mA VI = 12.5V to 25V IO = 5mA TJ = 0 to +125C f = 10Hz to 100KHz f = 120Hz, IO = 300mA VI = 13V to 23V TJ =+25C, IO = 500mA TJ= +25C, VI= 35V TJ =+25C
Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
Note:
mV/C
V/Vo
dB V mA mA
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 (MC78M12)
(Refer to the test circuits, 0 < TJ < +125C, IO=350mA, VI=19V, unless otherwise specified, CI =0.33F, CO=0.1F) Parameter Output Voltage Symbol TJ=+25C VO IO = 5mA to 350mA VI= 14.5V to 27V IO = 200mA TJ =+25C VI= 14.5V to 30V VI = 16V to 30V Conditions Min. 11.5 11.5 55 Typ. 12 12 4.1 - 0.5 75 2 300 700 Max. 12.5 12.6 100 50 240 120 6.0 0.5 0.8 mA V Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change
VO VO IQ IQ V/T VN RR VD ISC IPK
mV mV mA
IO = 5mA to 0.5A, TJ =+25C IO = 5mA to 200mA, TJ =+25C TJ=+25C IO = 5mA to 350mA IO = 200mA VI = 14.5V to 30V IO = 5mA TJ = 0 to +125C f = 10Hz to 100KHz f = 120Hz, IO = 300mA VI = 15V to 25V TJ =+25C, IO = 500mA TJ= +25C, VI= 35V TJ = +25C
Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
mV/C
V/Vo
dB V 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.
6
MC78MXX/LM78MXX
Electrical Characteristics (MC78M15)
(Refer to the test circuits, 0 < TJ < +125C, IO=350mA, VI=23V, unless otherwise specified, CI =0.33F, CO=0.1F) Parameter Output Voltage Symbol VO Conditions TJ=+25C IO = 5mA to 350mA VI= 17.5V to 30V IO = 200mA TJ =+25C VI= 17.5V to 30V VI = 20V to 30V Min. 14.4 14.25 54 Typ. 15 15 4.1 -1 100 2 300 700 Max. 15.6 15.75 100 50 300 150 6.0 0.5 0.8 mA V Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change
VO VO IQ IQ V/T VN RR VD ISC IPK
mV mV mA
IO = 5mA to 0.5A, TJ =+25C IO = 5mA to 200mA, TJ =+25C TJ=+25C IO = 5mA to 350mA IO = 200mA VI = 17.5V to 30V IO = 5mA TJ = 0 to +125C f = 10Hz to 100KHz f = 120Hz, IO = 300mA VI = 18.5V to 28.5V TJ =+25C, IO = 500mA TJ= +25C, VI= 35V TJ = + 25C
Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
mV/C
V/Vo
dB V 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 (MC78M18)
(Refer to the test circuits, 0 < TJ < +125C, IO=350mA, VI=26V, unless otherwise specified, CI =0.33F, CO=0.1F) Parameter Output Voltage Symbol TJ=+25C VO IO = 5mA to 350mA VI= 20.5V to 33V IO = 200mA TJ =+25C VI= 21V to 33V VI = 24V to 33V Conditions Min. Typ. 17.3 17.1 53 18 18 4.2 -1.1 100 2 300 700 Max. 18.7 18.9 100 50 360 180 6.0 0.5 0.8 mA mV/C V/Vo dB V mA mA V Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
VO V IQ IQ V/T VN RR VD ISC IPK
mV mV mA
IO = 5mA to 0.5A, TJ =+25C IO = 5mA to 200mA, TJ =+25C TJ =+25C IO = 5mA to 350mA IO = 200mA VI = 21V to 33V IO =5mATJ =0 to 125C f=10Hz to 100KHz f=120Hz, IO=300mA , VI=22V to 32V TJ =+25C, IO=500mA TJ =+25C, VI=35V TJ =+25C
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
Electrical Characteristics (MC78M20)
(Refer to the test circuits, 0 < TJ < +125C, IO=350mA, VI=29V, unless otherwise specified, CI =0.33F, CO=0.1F) Parameter Output Voltage Symbol VO Conditions TJ= +25C IO = 5mA to 350mA VI= 23V to 35V IO = 200mA VI= 23V to 35V TJ =+25C VI = 24V to 35V IO = 5mA to 0.5A, TJ =+25C IO = 5mA to 200mA, TJ =+25C TJ=+25C IO = 5mA to 350mA Quiescent Current Change IQ V/T VN RR VD ISC IPK IO = 200mA VI = 23V to 35V IO = 5mA TJ = 0 to +125C f = 10Hz to 100KHz f = 120Hz, IO = 300mA VI = 24 to 34V TJ =+25C, IO = 500mA TJ = +25C, VI= 35V TJ = +25C Min. 19.2 19 53 Typ. 20 20 4.2 -1.1 110 2 300 700 Max. 20.8 21 100 50 400 200 6.0 0.5 0.8 mA V Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current
VO VO IQ
mV mV mA
Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
mV/C
V
dB V mA mA
Notes: *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.
9
MC78MXX/LM78MXX
Electrical Characteristics (MC78M24)
(Refer to the test circuits, 0 < TJ < +125C, IO=350mA, VI=33V, unless otherwise specified, CI =0.33F, CO=0.1F) Parameter Output Voltage Symbol TJ=+25C VO IO = 5mA to 350mA VI= 27V to 38V IO = 200mA VI= 27V to 38V TJ =+25C VI = 28V to 38V IO = 5mA to 0.5A, TJ =+25C IO = 5mA to 200mA, TJ =+25C TJ=+25C IO = 5mA to 350mA Quiescent Current Change IQ V/T VN RR VD ISC IPK IO = 200mA VI = 27V to 38V IO = 5mA TJ = 0 to +125C f = 10Hz to 100KHz f = 120Hz, IO = 300mA VI = 28V to 38V TJ =+25C, IO = 500mA TJ= +25 C, VI= 35V TJ =+25C Conditions Min. 23 22.8 50 Typ. 24 24 4.2 - 1.2 170 2 300 700 Max. 25 25.2 100 50 480 240 6.0 0.5 0.8 mA V Unit
Line Regulation (Note1) Load Regulation (Note1) Quiescent Current
VO VO IQ
mV mV mA
Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Current
mV/C
V/Vo
dB V 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.
10
MC78MXX/LM78MXX
Typical Applications
VI
MC78MXX LM78MXX
Vo
CI
Co
Figure 1. Fixed Output Regulator
VI
CI
MC78MXX LM78MXX
Co
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
MC78MXX LM78MXX
CI Co
Figure 3. Circuit for Increasing Output Voltage
11
MC78MXX/LM78MXX
MC78M05 LM78M05
CI
LM741
Co
Figure 4. Adjustable Output Regulator (7 to 30V)
MC78M05
LM78M05
LM741
Figure 5. 0.5 to 10V Regulator
12
MC78MXX/LM78MXX
Mechanical Dimensions
Package
TO-220
9.90 0.20 4.50 0.20
1.30 0.10
2.80 0.10
(8.70) o3.60 0.10
(1.70)
1.30 -0.05
+0.10
9.20 0.20
(1.46)
13.08 0.20
(1.00)
(3.00)
15.90 0.20
1.27 0.10
1.52 0.10
0.80 0.10 2.54TYP [2.54 0.20] 2.54TYP [2.54 0.20]
10.08 0.30
18.95MAX.
(3.70)
(45 )
0.50 -0.05
+0.10
2.40 0.20
10.00 0.20
13
MC78MXX/LM78MXX
Mechanical Dimensions (Continued)
Package
D-PAK
6.60 0.20 5.34 0.30 (0.50) (4.34) (0.50) 0.70 0.20 2.30 0.10 0.50 0.10
0.60 0.20
6.10 0.20
2.70 0.20
9.50 0.30
0.91 0.10
0.80 0.20
MAX0.96 2.30TYP [2.300.20]
0.76 0.10 2.30TYP [2.300.20]
0.89 0.10
0.50 0.10 1.02 0.20 2.30 0.20
(0.70)
(0.90) (0.10) (3.05)
6.10 0.20
9.50 0.30
2.70 0.20
(2XR0.25)
0.76 0.10
14
(1.00)
6.60 0.20 (5.34) (5.04) (1.50)
MIN0.55
MC78MXX/LM78MXX
Ordering Information
Product Number LM78M05CT Product Number MC78M05CT MC78M06CT MC78M08CT MC78M09CT MC78M10CT MC78M12CT MC78M15CT MC78M18CT MC78M20CT MC78M24CT MC78M05CDT MC78M06CDT MC78M08CDT MC78M09CDT MC78M12CDT MC78M08ADT D-PAK 0 ~ + 125C TO-220 Package TO-220 Package Operating Temperature 0 ~ + 125C Operating Temperature
15
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.
www.fairchildsemi.com 6/11/01 0.0m 001 Stock#DSxxxxxxxx 2001 Fairchild Semiconductor Corporation
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.


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