Order this document by MCT7800/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 fixed voltage regulators, these devices can be used with
external components to obtain adjustable voltages and currents.
THREE-TERMINAL
POSITIVE FIXED
VOLTAGE REGULATORS
• 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 with a 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
1
2
3
Packages
Pin 1. Input
2. Ground
3. Output
D2T SUFFIX
PLASTIC PACKAGE
CASE 936
2
2
1
(D PAK)
3
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
This MCT-prefixed device is intended to be a possible replacement for the similar
devicewiththeMC-prefix. BecausetheMCTdeviceoriginatesfromdifferentsource
material, there may be subtle differences in typical parameter values or
characteristiccurves. Duetothediversityofpotentialapplications, Motorolacannot
assure identical performance in all circuits. Motorola recommends that the
customer qualify the MCT-prefixed device in each potential application.
STANDARD APPLICATION
MCT78XX
Input
Output
C
*
in
C
**
O
0.33 µF
DEVICE TYPE/NOMINAL OUTPUT VOLTAGE
MCT7805
MCT7806
MCT7808
MCT7809
5.0 V
6.0 V
8.0 V
9.0 V
MCT7812
MCT7815
MCT7818
MCT7824
12 V
15 V
18 V
24 V
A common ground is required between the
inputand 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
XX, these two digits of the type number indicate
nominal voltage.
Output Voltage
Tolerance
Tested Operating
Temperature Range
Device
Package
Surface Mount
Insertion Mount
Surface Mount
Insertion Mount
MCT78XXBD2T
MCT78XXBT
MCT78XXCD2T
MCT78XXCT
** C is required if regulator is located an
in
T
= – 40° to +125°C
J
appreciable distance from power supply filter.
4%
** Some C is recommended for stability; it does
O
improve transient response. Values less than
0.1 µF could cause instability.
T
= 0° to +125°C
J
XX indicates nominal voltage.
Motorola, Inc. 1994
Rev 3
MCT7800
1
MOTOROLA