MC78M00, MC78M00A
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 three−terminal regulators are intended for local,
on−card voltage regulation.
Internal current limiting, thermal shutdown circuitry and safe−area
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.
http://onsemi.com
MARKING
DIAGRAMS
TO−220−3
T SUFFIX
CASE 221A
MC
78MxxXXT
AWLYWW
Heatsink surface
connected to Pin 2.
Features
1
• No External Components Required
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe−Area Compensation
• MC78M00A High Accuracy (±2%) Available for 5.0 V, 8.0 V, 12 V
and 15 V
2
3
xx = Voltage Option
XX = Appropriate Suffix Options
= Assembly Location
WL = Wafer Lot
= Year
A
Y
WW = Work Week
• Pb−Free Packages are Available
4
xxxxx
ALYWW
Input
DPAK−3
DT SUFFIX
CASE 369C
1.0 k
1.0 k
210
2
1
3
6.7
V
16 k
100
200
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
300
1.0 k
3.0 k
3.6
k
xxxxx = Device Type and Voltage Option Code
300
6.4
k
A
L
Y
= Assembly Location
= Wafer Lot
= Year
5.6 k
0.24
13
WW = Work Week
50
200
Output
40
pF
Pin 1. Input
6.0 k
2. Ground
3. Output
2.0 k
3.9 k
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 402 of this data sheet.
6.0
k
2.8 k
GND
This device contains 28 active transistors.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 402 of this data sheet.
Figure 1. Representative Schematic Diagram
©
Semiconductor Components Industries, LLC, 2004
393
Publication Order Number:
June, 2004 − Rev. 14
MC78M00/D