Order this document by MC78L00/D
The MC78L00, A Series of positive voltage regulators are inexpensive,
easy–to–use devices suitable for a multitude of applications that require a
regulated supply of up to 100 mA. Like their higher powered MC7800 and
MC78M00 Series cousins, these regulators feature internal current limiting
and thermal shutdown making them remarkably rugged. No external
components are required with the MC78L00 devices in many applications.
These devices offer a substantial performance advantage over the
traditional zener diode–resistor combination, as output impedance and
quiescent current are substantially reduced.
P SUFFIX
CASE 29
Pin 1. Output
2. GND
1
3. Input
2
3
D SUFFIX
PLASTIC PACKAGE
CASE 751
• Wide Range of Available, Fixed Output Voltages
• Low Cost
• Internal Short Circuit Current Limiting
• Internal Thermal Overload Protection
• No External Components Required
8
(SOP–8)*
1
Pin 1. V
5. NC
6. GND
7. GND
out
2. GND
3. GND
4. NC
• Complementary Negative Regulators Offered (MC79L00 Series)
• Available in either ±5% (AC) or ±10% (C) Selections
8. V
in
* SOP–8 is an internally modified SO–8 package.
Pins2,3,6,and7areelectricallycommontothedie
attach flag. This internal lead frame modification
decreases package thermal resistance and
increases power dissipation capability when
appropriately mounted on a printed circuit board.
SOP–8 conforms to all external dimensions of the
standard SO–8 package.
Representative Schematic Diagram
Input
Q11
Q3
Q5
15k
Q12
Q1
Q10
5.0k
3.0
Standard Application
Output
3.8k
Q4
Q6
0–25k
MC78LXX
Input
Output
**
C
*
in
C
O
1.9k
19k
2.2k
0.33µF
1.2k
420
Q9
C
A common ground is required between the input
and the output voltages. The input voltage must
remaintypically2.0Vabovetheoutputvoltageeven
during the low point on the input ripple voltage.
Q8
Q2
Z1
2.85k
Q7
1.0k
Ground
*C
is required if regulator is located an
in
*appreciable distance from power supply filter.
**C is not needed for stability; however, it does
O
*improve transient response.
ORDERING INFORMATION
Operating
Device
Temperature Range
Package
SOP–8
DEVICE TYPE/NOMINAL VOLTAGE
10%
5%
Voltage
MC78LXXACD*
MC78LXXACP
MC78L05C
MC78L08C
MC78L09C
MC78L12C
MC78L15C
MC78L18C
MC78L24C
MC78L05AC
MC78L08AC
MC78L09AC
MC78L12AC
MC78L15AC
MC78L18AC
MC78L24AC
5.0
8.0
9.0
12
15
18
T = 0° to +125°C
J
Plastic Power
Plastic Power
SOP–8
MC78LXXCP
MC78LXXABD*
MC78LXXABP*
T = –40° to +125°C
J
Plastic Power
24
XX indicates nominal voltage
*Available in 5, 8, 9, 12 and 15 V devices.
Motorola, Inc. 1996
Rev 3
1
MOTOROLA ANALOG IC DEVICE DATA