ON Semiconductort
100 mA Negative 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.
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.
•
No External Components Required
•
Internal Short Circuit Current Limiting
•
Internal Thermal Overload Protection
•
Low Cost
•
Complementary Positive Regulators Offered (MC78L00 Series)
•
Available in Either
±5%
(AC) or
±10%
(C) Selections
MC79L00,
MC79L00A Series
THREE–TERMINAL LOW
CURRENT NEGATIVE FIXED
VOLTAGE REGULATORS
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 29
Pin 1. Ground
2. Input
3. Output
1
2
3
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SOP–8)*
V
out
V
in
V
in
NC
5.
6.
7.
8.
GND
V
in
V
in
NC
Pin 1.
2.
3.
4.
Representative Schematic Diagram
Gnd
Q10
Q5
Q4
R7
Q8
Q14
Q9
Q1
R2
Z1
R3
C
Q6
R10
R11
Q7
Q2
Q11
R14
R15
Input
* Automotive 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.
R4
Q12
R16
Output
Q13
R9
R17
R1
R
5
R18
R6
R8
*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
appropriately mounted on a printed circuit board.
SOP–8 conforms to all external dimensions of the
standard SO–8 package.
Device No.
±10%
MC79L05C
MC79L12C
MC79L15C
MC79L18C
MC79L24C
Device No.
5%
MC79L05AC
MC79L12AC
MC79L15AC
MC79L18AC
MC79L24AC
Nominal
Voltage
–5.0
–12
–15
–18
–24
ORDERING INFORMATION
Device
MC79LXXACD*
MC79LXXACP
MC79LXXCP
MC79LXXABD*
MC79LXXABP*
T
J
= –40° to +125°C
T
J
= 0° to +125°C
Operating
Temperature Range
Package
SOP–8
Plastic Power
Plastic Power
SOP–8
Plastic Power
XX indicates nominal voltage
©
Semiconductor Components Industries, LLC, 2002
1
January, 2002 – Rev. 4
Publication Order Number:
MC79L00/D
ONSEMI [ ON SEMICONDUCTOR ]
