MC7800, MC7800A,
NCV7805
1.0 A Positive Voltage
Regulators
These voltage regulators are monolithic integrated circuits designed
as fixed−voltage regulators for a wide variety of applications
including local, on−card regulation. These regulators employ internal
current limiting, thermal shutdown, and safe−area compensation. With
adequate heatsinking they can deliver output currents in excess of
1.0 A. Although designed primarily as a fixed voltage regulator, these
devices can be used with external components to obtain adjustable
voltages and currents.
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TO−220−3
T SUFFIX
CASE 221A
Heatsink surface
connected to Pin 2.
1
• Output Current in Excess of 1.0 A
• No External Components Required
2
3
2
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe−Area Compensation
• Output Voltage Offered in 2% and 4% Tolerance
D PAK−3
Pin 1. Input
2. Ground
3. Output
D2T SUFFIX
CASE 936
1
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
2
• Available in Surface Mount D PAK−3, DPAK−3 and Standard
4
3−Lead Transistor Packages
DPAK−3
DT SUFFIX
CASE 369C
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
2
1
3
• Pb−Free Packages are Available
STANDARD APPLICATION
MAXIMUM RATINGS (T = 25°C, unless otherwise noted)
A
Value
Unit
MC78XX
Input
Output
C **
369C 221A
936
Rating
Input Voltage
Symbol
C *
in
0.33 mF
O
(5.0 − 18 V)
(24 V)
V
I
35
40
Vdc
W
Power Dissipation
P
D
Internally Limited
A common ground is required between the
input and the output voltages. The input voltage
must remain typically 2.0 V above the output
voltage even during the low point on the input
ripple voltage.
Thermal Resistance,
Junction−to−Ambient
R
92
65
Figure °C/W
14
q
JA
Thermal Resistance,
Junction−to−Case
R
5.0
5.0
5.0
°C/W
q
JC
XX,
These two digits of the type number
indicate nominal voltage.
Storage Junction Temperature
Range
T
−65 to +150
+150
°C
°C
stg
* C is required if regulator is located an
in
appreciable distance from power supply
filter.
Operating Junction Temperature
T
J
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits are
exceeded, device functional operation is not implied, damage may occur and
reliability may be affected.
** C is not needed for stability; however,
O
it does improve transient response. Values
of less than 0.1 mF could cause instability.
*This device series contains ESD protection and exceeds the following tests:
Human Body Model 2000 V per MIL_STD_883, Method 3015.
Machine Model Method 200 V.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 22 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 28 of this data sheet.
Semiconductor Components Industries, LLC, 2005
1
Publication Order Number:
April, 2005 − Rev. 14
MC7800/D
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