ON Semiconductort
MC79L00,
MC79L00A Series
100 mA Negative Voltage
Regulators
THREE–TERMINAL LOW
CURRENT NEGATIVE FIXED
VOLTAGE REGULATORS
The MC79L00, A Series negative voltage regulators are
inexpensive, easy–to–use devices suitable for numerous applications
requiring up to100 mA. Like the higher powered MC7900 Series
negative regulators, this series features thermal shutdown and current
limiting, making them remarkably rugged. In most applications, no
external components are required for operation.
SEMICONDUCTOR
TECHNICAL DATA
The MC79L00 devices are useful for on–card regulation or any
other application where a regulated negative voltage at a modest
current level is needed. These regulators offer substantial advantage
over the common resistor/zener diode approach.
P SUFFIX
PLASTIC PACKAGE
CASE 29
• No External Components Required
Pin 1. Ground
2. Input
3. Output
• Internal Short Circuit Current Limiting
• Internal Thermal Overload Protection
• Low Cost
1
2
3
• Complementary Positive Regulators Offered (MC78L00 Series)
• Available in Either ±5% (AC) or ±10% (C) Selections
D SUFFIX
PLASTIC PACKAGE
CASE 751
8
1
(SOP–8)*
Pin 1. V
5. GND
out
2. V
3. V
6. V
7. V
in
in
in
in
4. NC
8. NC
*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 modifica-
tion decreases package thermal resistance and
increases power dissipation capability when
appropriatelymounted on a printed circuit board.
SOP–8 conforms to all external dimensions of the
standard SO–8 package.
Representative Schematic Diagram
Gnd
R8
R6
R
5
Q10
Q5
R9
R17
R16
R18
Q4
Device No.
Device No.
5%
Nominal
Voltage
R1
±10%
R7
R4
MC79L05C
MC79L12C
MC79L15C
MC79L18C
MC79L24C
MC79L05AC
MC79L12AC
MC79L15AC
MC79L18AC
MC79L24AC
–5.0
–12
–15
–18
–24
Q8
Q14
Q9
Q1
Output
Q13
Q12
R2
Z1
R3
ORDERING INFORMATION
C
Q2
Operating
Temperature Range
Q7
Q11
Q6
Device
Package
R10 R11
R14
R15
MC79LXXACD*
MC79LXXACP
MC79LXXCP
SOP–8
Input
Plastic Power
Plastic Power
SOP–8
T
= 0° to +125°C
J
*ĂAutomotive temperature range selections are available with special test conditions
and additional tests in 5, 12 and 15 V devices. Contact your local ON Semiconductor
sales office for information.
MC79LXXABD*
MC79LXXABP*
T
= –40° to +125°C
J
Plastic Power
XX indicates nominal voltage
Semiconductor Components Industries, LLC, 2002
1
Publication Order Number:
January, 2002 – Rev. 4
MC79L00/D