MC78L00 Datasheet, PDF (1/8 Pages) Motorola, Inc – Three-Terminal Low Current Positive Voltage Regulators

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Three-Terminal Low Current
Positive Voltage Regulators
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.
• Wide Range of Available, Fixed Output Voltages
• Low Cost
• Internal Short Circuit Current Limiting
• Internal Thermal Overload Protection
• No External Components Required
• Complementary Negative Regulators Offered (MC79L00 Series)
• Available in either ±5% (AC) or ±10% (C) Selections
Representative Schematic Diagram
15k
Q1
3.8k
Q3
Q5
Q4 Q6
Input
Q11
Q12
Q10
5.0k 3.0 _Output
0–25k
1.2k
Z1
Q2
420
1.9k 19k 2.2k
C
Q9
Q8
Q7
1.0k
2.85k
Ground
ORDERING INFORMATION
Device
Operating
Temperature Range
MC78LXXACD*
MC78LXXACP
MC78LXXCP
TJ = 0° to +125°C
MC78LXXABD*
MC78LXXABP*
TJ = –40° to +125°C
XX indicates nominal voltage
*Available in 5, 8, 9, 12 and 15 V devices.
Package
SOP–8
Plastic Power
Plastic Power
SOP–8
Plastic Power
MC78L00, A
Series
P SUFFIX
CASE 29
Pin 1. Output
2. GND
3. Input
12 ₃
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SOP–8)*
Pin 1. Vout
2. GND
3. GND
4. NC
5. NC
6. GND
7. GND
8. Vin
* SOP–8 is an internally modified SO–8 package.
Pins 2, 3, 6, and 7 are electrically common to the die
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.
Standard Application
Input
Cin*
0.33µF
MC78LXX
Output
CO**
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.
*Cin is required if regulator is located an
*appreciable distance from power supply filter.
**CO is not needed for stability; however, it does
*improve transient response.
DEVICE TYPE/NOMINAL VOLTAGE
10%
5%
Voltage
MC78L05C
MC78L05AC
5.0
MC78L08C
MC78L08AC
8.0
MC78L09C
MC78L09AC
9.0
MC78L12C
MC78L12AC
12
MC78L15C
MC78L15AC
15
MC78L18C
MC78L18AC
18
MC78L24C
MC78L24AC
24
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 3
1