MC79M00 Series
500 mA Negative Voltage
Regulators
The MC79M00 series of fixed output negative voltage regulators
are intended as complements to the popular MC78M00 series devices.
Available in fixed output voltage options of −5.0 V, −8.0 V, −12 V
and −15 V, these regulators employ current limiting, thermal
shutdown, and safe−area compensation, making them remarkably
rugged under most operating conditions. With adequate heatsinking
they can deliver output currents in excess of 0.5 A.
http://onsemi.com
THREE−TERMINAL
NEGATIVE FIXED
VOLTAGE REGULATORS
Features
•
•
•
•
•
•
STANDARD APPLICATION
No External Components Required
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor Safe−Area Compensation
Also Available in Surface Mount DPAK (DT) Package
Pb−Free Packages are Available
A common ground is required between the input
and the output voltages. The input voltage must
remain typically 1.1 V more negative even during
the high point of the input ripple voltage.
XX These two digits of the type number indicate
nominal voltage.
* Cin is required if regulator is located an
appreciable distance from power supply filter.
** CO improve stability and transient response.
Nominal Output Voltage
MC79M05
MC79M08
MC79M12
MC79M15
Output
CO**
1.0 mF
Cin*
0.33 mF
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
Device
MC79MXX
Input
−5.0 V
−8.0 V
−12 V
−15 V
MARKING
DIAGRAMS
R1
4.0 k
2.0 k
4.9 k
1.0 k
12 k
1.2 k
547
11.5 k
2.0 k
2.0 k
14.7 k
3.6 k
25
2.4 k
GND
1
R2
VO
10 k
2
Pin 1. Ground
2. Input
3. Output
3
MC
79MxxyT
AWLYWWG
TO−220−3
T SUFFIX
CASE 221AB
4
20 pF
1 2
10 pF 10 k
2.0 k
1.1 k
20 k 20 k
240
0.3
100
750
VI
This device contains 31 active transistors.
Figure 1. Representative Schematic Diagram
9MxxBG
ALYWW
79MxxG
ALYWW
3
DPAK−3
DT SUFFIX
CASE 369C
xx
y
A
WL, L
Y
WW
G
= 05, 08, 12, or 15
= B or C
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Device
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
© Semiconductor Components Industries, LLC, 2013
July, 2013 − Rev. 15
1
Publication Order Number:
MC79M00/D
