L79L00
SERIES
NEGATIVE VOLTAGE REGULATORS
s
s
s
s
s
s
OUTPUT CURRENT UP TO 100 mA
OUTPUT VOLTAGES OF -5; -6; -8; -9; -12;
-15 V
THERMAL OVERLOAD PROTECTION
SHORT CIRCUIT PROTECTION
NO EXTERNAL COMPONENTS ARE
REQUIRED
AVAILABLE IN EITHER ± 5% (AC) OR ± 10%
(C) SELECTION
SO-8
SOT-89
DESCRIPTION
The L79L00 series of three-terminal negative
regulators employ internal current limiting and
thermal shutdown, making them essentially
indestructible. If adequate heat-sink is provided,
they can deliver up to 100 mA output current.
They are intended as fixed voltage regulators in a
wide range of applications including local or
on-card regulation for elimination of noise and
distribution problems associated with single-point
regulation. In addition, they can be used with
power pass elements to make high-current
voltage regulators.
The L79L00 series used as Zener diode/resistor
combination replacement, offers an effective
TO-92
output impedance improvement of typically two
orders of magnitude, along with lower quiescent
current and lower noise.
SCHEMATIC DIAGRAM
August 2003
1/15
L79L00 SERIES
ABSOLUTE MAXIMUM RATINGS
Symbol
V
I
I
O
P
tot
T
stg
T
op
DC Input Voltage
Output Current
Power Dissipation
Storage Temperature Range
Operating Junction Temperature Range
For L79L00C, L79L00AC
For L79L00AB
Parameter²
V
O
= -5 to -9 V
V
O
= -12 to -15 V
Value
-30
-35
100
Internally Limited (*)
-40 to 150
0 to 125
-40 to 125
°C
°C
°C
Unit
V
mA
(*) Our SO-8 package used for Voltage Regulators is modified internally to have pins 2, 3, 6 and 7 electrically communed to the die attach
flag. This particular frame decreases the total thermal resistance of the package and increases its ability to dissipate power when an appro-
priate area of copper on the printed circuit board is available for heat-sinking. The external dimensions are the same as for the standard SO-8.
THERMAL DATA
Symbol
R
thj-case
R
thj-amb
Parameter
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
2
SO-8
Max
Max
20
55 (*)
TO-92
SOT-89
15
Unit
°C/W
°C/W
200
(*) Considering 6 cm of copper Board heat-sink.
CONNECTION DIAGRAM
(top view)
PIN 1 =
PIN 2 =
PIN 3 =
GND
V
IN
V
OUT
SO-8
SOT-89
TO-92
BOTTOM VIEW
2/15
L79L00 SERIES
ORDERING CODES
TYPE
L79L05C
L79L05AC
L79L05AB
L79L06C
L79L06AC
L79L06AB
L79L08C
L79L08AC
L79L08AB
L79L09C
L79L09AC
L79L09AB
L79L12C
L79L12AC
L79L12AB
L79L15C
L79L15AC
L79L15AB
SO-8 (TUBE)*
L79L05CD
L79L05ACD
L79L05ABD
L79L06CD
L79L06ACD
L79L06ABD
L79L08CD
L79L08ACD
L79L08ABD
L79L09CD
L79L09ACD
L79L09ABD
L79L12CD
L79L12ACD
L79L12ABD
L79L15CD
L79L15ACD
L79L15ABD
TO-92 (TUBE)**
L79L05CZ
L79L05ACZ
L79L05ABZ
L79L06CZ
L79L06ACZ
L79L06ABZ
L79L08CZ
L79L08ACZ
L79L08ABZ
L79L09CZ
L79L09ACZ
L79L09ABZ
L79L12CZ
L79L12ACZ
L79L12ABZ
L79L15CZ
L79L15ACZ
L79L15ABZ
SOT-89 (T&R)
L79L05ACU
L79L05ABU
L79L06ACU
L79L06ABU
L79L08ACU
L79L08ABU
L79L09ACU
L79L09ABU
L79L12ACU
L79L12ABU
OUTPUT VOLTAGE
-5 V
-5 V
-5 V
-6 V
-6 V
-6 V
-8 V
-8 V
-8 V
-9 V
-9 V
-9 V
-12 V
-12 V
-12 V
-15 V
-15 V
-15 V
(*) Available in Tape & Reel with the suffix "13TR".
(**) Available in Ammopak with the suffix "-AP" or in Tape & Reel with the suffix "-TR".
TEST CIRCUITS
3/15
L79L00 SERIES
ELECTRICAL CHARACTERISTICS OF L79L05
(refer to the test circuits, T
J
= 0 to 125°C, V
I
= -10V,
I
O
= 40 mA, C
I
= 0.33 µF, C
O
= 0.1 µF unless otherwise specified).
Symbol
V
O
V
O
∆V
O
∆V
O
I
d
∆I
d
eN
SVR
V
d
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
T
J
= 25°C
I
O
= 1 to 40 mA
I
O
= 1 to 70 mA
V
I
= -7 to -20 V
V
I
= -8 to -20 V
I
O
= 1 to 100 mA
I
O
= 1 to 40 mA
T
J
= 25°C
T
J
= 125°C
I
O
= 1 to 40 mA
V
I
= -8 to -20 V
B = 10Hz to 100KHz
I
O
= 40 mA f = 120Hz
V
I
= -8 to -18 V
T
J
= 25°C
T
J
= 25°C
40
40
49
1.7
V
I
= -7 to -20 V
V
I
= -10 V
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
Test Conditions
Min.
-4.6
-4.5
-4.5
Typ.
-5
Max.
-5.4
-5.5
-5.5
200
150
60
30
6
5.5
0.2
1.5
µV
dB
V
mA
mA
mV
mV
Unit
V
V
ELECTRICAL CHARACTERISTICS OF L79L06
(refer to the test circuits, T
J
= 0 to 125°C, V
I
= -12V,
I
O
= 40 mA, C
I
= 0.33 µF, C
O
= 0.1 µF unless otherwise specified).
Symbol
V
O
V
O
∆V
O
∆V
O
I
d
∆I
d
eN
SVR
V
d
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
T
J
= 25°C
I
O
= 1 to 40 mA
I
O
= 1 to 70 mA
V
I
= -8.5 to -20 V
V
I
= -9 to -20 V
I
O
= 1 to 100 mA
I
O
= 1 to 40 mA
T
J
= 25°C
T
J
= 125°C
I
O
= 1 to 40 mA
V
I
= -8 to -20 V
B = 10Hz to 100KHz
I
O
= 40 mA f = 120Hz
V
I
= -9 to -20 V
T
J
= 25°C
T
J
= 25°C
38
50
46
1.7
V
I
= -8.5 to -20 V
V
I
= -12 V
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
Test Conditions
Min.
-5.52
-5.4
-5.4
Typ.
-6
Max.
-6.48
-6.6
-6.6
200
150
60
30
6
5.5
0.2
1.5
µV
dB
V
mA
mA
mV
mV
Unit
V
V
4/15
L79L00 SERIES
ELECTRICAL CHARACTERISTICS OF L79L08
(refer to the test circuits, T
J
= 0 to 125°C, V
I
= -14V,
I
O
= 40 mA, C
I
= 0.33 µF, C
O
= 0.1 µF unless otherwise specified).
Symbol
V
O
V
O
∆V
O
∆V
O
I
d
∆I
d
eN
SVR
V
d
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
T
J
= 25°C
I
O
= 1 to 40 mA
I
O
= 1 to 70 mA
V
I
= -10.5 to -23 V
V
I
= -11 to -23 V
I
O
= 1 to 100 mA
I
O
= 1 to 40 mA
T
J
= 25°C
T
J
= 125°C
I
O
= 1 to 40 mA
V
I
= -11 to -23 V
B = 10Hz to 100KHz
I
O
= 40 mA f = 120Hz
V
I
= -12 to -23 V
T
J
= 25°C
T
J
= 25°C
36
60
45
1.7
V
I
= -10.5 to -23 V
V
I
= -14 V
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
Test Conditions
Min.
-7.36
-7.2
-7.2
Typ.
-8
Max.
-8.64
-8.8
-8.8
200
150
80
40
6
5.5
0.2
1.5
µV
dB
V
mA
mA
mV
mV
Unit
V
V
ELECTRICAL CHARACTERISTICS OF L79L09
(refer to the test circuits, T
J
= 0 to 125°C, V
I
= -15V,
I
O
= 40 mA, C
I
= 0.33 µF, C
O
= 0.1 µF unless otherwise specified).
Symbol
V
O
V
O
∆V
O
∆V
O
I
d
∆I
d
eN
SVR
V
d
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
T
J
= 25°C
I
O
= 1 to 40 mA
I
O
= 1 to 70 mA
V
I
= -11.5 to -23 V
V
I
= -12 to -23 V
I
O
= 1 to 100 mA
I
O
= 1 to 40 mA
T
J
= 25°C
T
J
= 125°C
I
O
= 1 to 40 mA
V
I
= -12 to -23 V
B = 10Hz to 100KHz
I
O
= 40 mA f = 120Hz
V
I
= -12 to -23 V
T
J
= 25°C
T
J
= 25°C
36
70
44
1.7
V
I
= -11.5 to -23 V
V
I
= -15 V
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
Test Conditions
Min.
-8.28
-8.1
-8.1
Typ.
-9
Max.
-9.72
-9.9
-9.9
250
200
80
40
6
5.5
0.2
1.5
µV
dB
V
mA
mA
mV
mV
Unit
V
V
5/15
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