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Semiconductor Components Industries, LLC, 2002
April, 2002 – Rev. 10
1 Publication Order Number:
MC7800/D
MC7800, MC7800A, LM340,
LM340A Series, 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.
• Output Current in Excess of 1.0 A
• No External Components Required
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe–Area Compensation
• Output Voltage Offered in 2% and 4% Tolerance
• Available in Surface Mount D
2
PAK, DPAK and Standard 3–Lead
Transistor Packages
MAXIMUM RATINGS (T
A
= 25°C, unless otherwise noted.)
Rating
Symbol Value Unit
Input Voltage (5.0 – 18 V) V
I
35 Vdc
Input Voltage (24 V) 40
Power Dissipation
Case 221A (TO–220)
T
A
= 25°C P
D
Internally
Limited
W
Thermal Resistance, Junction–to–Ambient R
θ
JA
65 °C/W
Thermal Resistance, Junction–to–Case R
θ
JC
5.0 °C/W
Case 936 (D
2
PAK)
T
A
= 25°C P
D
Internally
Limited
W
Thermal Resistance, Junction–to–Ambient R
θ
JA
See
Figure
14
°C/W
Thermal Resistance, Junction–to–Case R
θ
JA
5.0 °C/W
Case 369A (DPAK)
T
A
= 25°C P
D
Internally
Limited
W
Thermal Resistance, Junction–to–Ambient R
θ
JA
92 °C/W
Thermal Resistance, Junction–to–Case R
θ
JC
5.0 °C/W
Storage Junction Temperature Range T
stg
–65 to
+150
°C
Operating Junction Temperature T
J
+150 °C
NOTE: ESD data available upon request.
TO–220
T SUFFIX
CASE 221A
1
D
2
PAK
D2T SUFFIX
CASE 936
2
3
See detailed ordering and shipping information in the package
dimensions section on page 16 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.
1
3
STANDARD APPLICATION
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.
XX,
MC78XX
Input
C
in
*
0.33 µF
C
O
**
Output
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
is not needed for stability; however,
it does improve transient response. Values
of less than 0.1 µF could cause instability.
*
**
See general marking information in the device marking
section on page 18 of this data sheet.
DEVICE MARKING INFORMATION
1
3
DPAK
DT SUFFIX
CASE 369A
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