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.
•
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
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
Device
MC79M05
MC79M08
MC79M12
MC79M15
Nominal Output Voltage
−5.0 V
−8.0 V
−12 V
−15 V
GND
2.4 k
2.0 k
14.7 k
2.0 k
11.5 k
http://onsemi.com
THREE−TERMINAL
NEGATIVE FIXED
VOLTAGE REGULATORS
STANDARD APPLICATION
Input
C
in
*
0.33
mF
MC79MXX
Output
C
O
**
1.0
mF
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.
* C
in
is required if regulator is located an
appreciable distance from power supply filter.
** C
O
improve stability and transient response.
MARKING
DIAGRAMS
3.6 k
25
547
4.0 k
R1
4.9 k
1
R2
10 k
20 pF
10 pF 10 k
2.0 k
20 k 20 k
100
750
240
0.3
V
I
V
O
2
3
Pin 1. Ground
2. Input
3. Output
MC
79MxxyT
AWLYWWG
1.2 k
1.0 k
12 k
2.0 k
TO−220−3
T SUFFIX
CASE 221AB
4
1 2
3
DPAK−3
DT SUFFIX
CASE 369C
9MxxBG
ALYWW
79MxxG
ALYWW
1.1 k
This device contains 31 active transistors.
Figure 1. Representative Schematic Diagram
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 5 of this data sheet.
©
Semiconductor Components Industries, LLC, 2006
1
August, 2006 − Rev. 11
Publication Order Number:
MC79M00/D
ONSEMI [ ON SEMICONDUCTOR ]
