Order this document by MC7800/D
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.
THREE–TERMINAL
POSITIVE FIXED
VOLTAGE REGULATORS
SEMICONDUCTOR
TECHNICAL DATA
• 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
T SUFFIX
PLASTIC PACKAGE
CASE 221A
Heatsink surface
connected to Pin 2.
2
• Available in Surface Mount D PAK and Standard 3–Lead Transistor
Packages
1
2
• Previous Commercial Temperature Range has been Extended to a
Junction Temperature Range of –40°C to +125°C
3
Pin 1. Input
2. Ground
3. Output
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
D2T SUFFIX
PLASTIC PACKAGE
CASE 936
MC7805AC
LM340AT–5
MC7805C
MC7812C
12 V
15 V
LM340T–12
MC7815AC
LM340AT–15
MC7815C
2
5.0 V
6.0 V
(D PAK)
2
1
3
LM340T–5
MC7806AC
MC7806C
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
LM340T–15
MC7818AC
MC7818C
MC7808AC
MC7808C
8.0 V
9.0 V
12 V
18 V
24 V
STANDARD APPLICATION
MC7809C
MC7824AC
MC7824C
MC78XX
Input
Output
**
MC7812AC
LM340AT–12
C
*
in
C
O
0.33 µF
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.
ORDERING INFORMATION
Output Voltage
Tolerance
Operating
Temperature Range
Device
Package
MC78XXACT
LM340AT–XX
MC78XXACD2T
MC78XXCT
XX,
These two digits of the type number
indicate nominal voltage.
Insertion Mount
Surface Mount
Insertion Mount
Surface Mount
2%
4%
* C is required if regulator is located an
in
appreciable distance from power supply
filter.
T = –40° to +125°C
J
** C is not needed for stability; however,
O
LM340T–XX
MC78XXCD2T
it does improve transient response. Values
of less than 0.1 µF could cause instability.
XX indicates nominal voltage.
Motorola, Inc. 1997
Rev 5
1
MOTOROLA ANALOG IC DEVICE DATA