Semiconductor Components Industries, LLC, 2010
July, 2010 Rev. 22
1
Publication Order Number:
MC78M00/D
MC78M00, MC78M00A,
NCV78M00 Series
500 mA Positive Voltage
Regulators
The MC78M00/MC78M00A Series positive voltage regulators are
identical to the popular MC7800 Series devices, except that they are
specified for only half the output current. Like the MC7800 devices,
the MC78M00 threeterminal regulators are intended for local,
oncard voltage regulation.
Internal current limiting, thermal shutdown circuitry and safearea
compensation for the internal pass transistor combine to make these
devices remarkably rugged under most operating conditions.
Maximum output current, with adequate heatsinking is 500 mA.
Features
No External Components Required
Internal Thermal Overload Protection
Internal Short Circuit Current Limiting
Output Transistor SafeArea Compensation
MC78M00A High Accuracy (±2%)
Available for 5.0 V, 8.0 V, 12 V and 15 V
PbFree Packages are Available*
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
Figure 1. Representative Schematic Diagram
This device contains 28 active transistors.
1.0 k
Input
210
6.7
V
16 k
100
200
300
3.6
k
6.4
k
520
6.0 k
2.0 k
3.9 k
6.0
k
2.8 k
40
pF
5.6 k
3.0 k
1.0 k
300
200
50
13
0.24
GND
Output
10
pF
2.6
k
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
TO220
T SUFFIX
CASE 221AB
1
DPAK3
DT SUFFIX
CASE 369C
MARKING
DIAGRAMS
xxxxx = Device Type and Voltage Option Code
A
= Assembly Location
L
= Wafer Lot
Y
= Year
WW = Work Week
G
= PbFree Package
2
3
See detailed ordering and shipping information in the package
dimensions section on page
1014 of this data sheet.
ORDERING INFORMATION
Heatsink surface
connected to Pin 2.
Pin 1. Input
2. Ground
3. Output
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
MC
AWLYWWG
78MxxXXT
http://onsemi.com
1 2
3
4
xxxxxG
ALYWW
xx
= Voltage Option
XX = Appropriate Suffix Options
A
= Assembly Location
WL = Wafer Lot
Y
= Year
WW = Work Week
G
= PbFree Package
See general marking information in the device marking
section on page
10 of this data sheet.
DEVICE MARKING INFORMATION