79XX
Description
This series of fixed-negative-voltage monolithic integrated-circuit voltage regulators
is designed to complement Series
MIK7800 in a wide range of applications. These applications include on-card regulation for elimination of noise and distribution
problems associated with single point regulation. Each of these regulators can deliver up to 1.5 amperes of output current. The internal
current limiting and thermal shutdown features of these regulators make them essentially immune to overload. In addition to use as fixed-
voltage regulators, these devices can be used with external components to obtain adjustable output voltages and current
and also as the power pass element in precision regulators.
Features
•3-Terminal Regulators
•Output Current Up to 1.5 A
•No External Components
•Internal Thermal Overload Protection
•High Power Dissipation Capability
•Internal Short-Circuit
Current Limiting
Package TO-220
(top view)
•Output Transistor Safe Area Compensation
Package
Internal Block Digram
GND
R1
Voltage
reference
R2
OUTPUT
Protection
circuitry
RSC
Contek
INPUT
BEIJING ESTEK ELECTRONICS CO.,LTD
1
79XX
Absolute Maximum Ratings
over operating temperature range (unless otherwise noted)
Parameter
Input voltage
Continuous total dissipation at 25 °free-air temperature
C
Continuous total dissipation at (or bellow) 25 °case temperature
C
Operating free-air, case, or virtual junctions temperature range
Storage temperature range
Lead temperature 3.2 mm (1/8 inch) from case for 10 seconds
7924
All others
Maximum
-40
-35
2
15
0 to 150
-65 to 150
260
Units
V
W
°
C
Recommended Cperating Conditions
Parameter
7905
7906
7908
7912
7915
7918
7924
Min
-7
-8
-10.5
-14.5
-17.5
-21
-27
0
Max
-25
-25
-25
-30
-30
-33
-38
1.5
125
Units
Input voltage V
I
V
Output current, I
O
Operating virtual junction temperature, T
J
A
°
C
Device Selection Guide
Device
7905
7906
7908
7912
7915
7918
7924
Output Voltage
-5V
-6V
-8V
-12V
-15V
-18V
-24V
BEIJING ESTEK ELECTRONICS CO.,LTD
2
79XX
Electrical Characteristics
Parameter
Output voltage**
I
O
=
5mA to
1A, V
I
=
-7V to
-20V,
V
I
=
-7V to
25V
V
I
=
-8V to -
18V, f= 120Hz
I
O
=
5mA to
1.5A I
O
=
250mA to
I
O
=
5mA
f=
10 Hz to 100 KHz
I
O
= 1A
7905
Test Conditions*
25°
C
0°to 125°
C
C
25°
C
0°to 125°
C
C
25°
C
0°to 125°
C
C
25°
C
25°
C
25°
C
0°to 125°
C
C
25°
C
54
Min
-4.8
-4.75
7905
Typ
Max
-5
-5.2
-5
-5.25
12.5
4
60
15
5
-0.4
125
1.1
1.5
0.15
0.08
2.1
100
50
50
15
Units
Electrical characteristics at specified virtual junction temperature, V
I
= -10V, I
O
= 500mA (unless otherwise noted)
V
mV
dB
mV
mV/°
C
µ
V
V
Input regulation
-
Ripple rejection
Output regulation
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
Bias current
Bias current change
-
Peak output current
2
0.5
0.5
mA
A
V
I
=
25V
-7V to
Electrical Characteristics 7906
Electrical characteristics at specified virtual junction temperature, V
I
= -11V, I
O
= 500mA (unless otherwise noted)
Parameter
Output voltage**
I
O
=
5mA to
1A, V
I
=
-8V to
-21V,
V
I
=
-8V to
25V
V
I
=
-9V to -
19V, f=
120Hz
I
O
=
5mA to
1.5A I
O
=
250mA to
I
O
=
5mA
f=
10 Hz to 100 KHz
I
O
=
1A
Test Conditions*
25°
C
0°to 125°
C
C
25°
C
0°to 125°
C
C
25°
C
0°to 125°
C
C
25°
C
25°
C
25°
C
0°to 125°
C
C
25°
C
54
Min
-5.75
-5.7
7906
Typ
Max
-6
-6.25
-6
12.5
4
60
15
5
-0.4
150
1.1
1.5
0.15
0.08
2.1
120
60
-6.3
120
60
Units
V
mV
dB
mV
mV/°
C
µ
V
V
Input regulation
-
Ripple rejection
Output regulation
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
Bias current
Bias current change
-
Peak output current
*
2
1.3
0.5
mA
A
V
I
=
25V
-8V to
Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. Thermal
effects must be taken into account separately.
**
This specification applies only for dc power dissipation permitted by absolute maximum ratings.
BEIJING ESTEK ELECTRONICS CO.,LTD
3
79XX
Electrical Characteristics 7908
Electrical characteristics at specified virtual junction temperature, V
I
= -14V, I
O
= 500mA (unless otherwise noted)
Parameter
Output voltage**
I
O
= 5mA to 1A,
V
I
= -10.5V to -23V,
P≤15W
V
I
= -10.5V to -25V
V
I
= -11V to -17V
V
I
= -11.5V to -21.5V, f=
120Hz
I
O
= 5mA to 1.5A
I
O
= 250mA to 750mA
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
Bias current
Bias current change
Peak output current
I
O
= 5mA
f= 10Hz to 100 KHz
I
O
= 1A
0°to 125°
C
C
25°
C
25°
C
25°
C
0°to 125°
C
C
25°
C
Test Conditions*
25°
C
0°to 125°
C
C
Min
-7.7
-7.6
7908
Typ
Max
-8
-8.3
-8
-8.4
Units
V
Input regulation
Ripple rejection
Output regulation
25°
C
0°to 125°
C
C
25°
C
54
12.5
4
60
15
5
-0.6
200
1.1
1.5
0.15
0.08
2.1
160
80
mV
dB
160
80
mV
mV/°
C
µ
V
V
2
1
0.5
mA
A
V
I
= -10.5V to -25V
I
O
= 5mA to 1A
Electrical Characteristics 7912
Electrical characteristics at specified virtual junction temperature, V
I
= -19V, I
O
= 500mA (unless otherwise noted)
Parameter
Output voltage**
I
O
= 5mA to 1A,
V
I
= -14.5V to -27V,
P≤15W
Input regulation
Ripple rejection
Output regulation
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
Bias current
Bias current change
Peak output current
*
V
I
= -14.5V to -30V
V
I
= -16V to -22V
V
I
= -15V to -25V,
f= 120Hz
I
O
= 5mA to 1.5A
I
O
= 250mA to 750mA
I
O
= 5mA
f= 10 Hz to 100 KHz
I
O
= 1A
0°to 125°
C
C
25°
C
25°
C
25°
C
0°to 125°
C
C
25°
C
Test Conditions*
25°
C
0°to 125°
C
C
Min
-11.5
-11.4
7912
Typ
Max
-12
-12.5
-12
-12.6
Units
V
25°
C
0°to 125°
C
C
25°
C
54
5
3
60
15
5
-0.8
300
1.1
2
0.04
0.06
2.1
80
30
mV
dB
200
75
mV
mV/°
C
µ
V
V
3
0.5
0.5
mA
A
V
I
= -14.5V to -30V
I
O
= 5mA to 1A
Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. Thermal
effects must be taken into account separately.
**
This specification applies only for dc power dissipation permitted by absolute maximum ratings.
BEIJING ESTEK ELECTRONICS CO.,LTD
4
79XX
Electrical Characteristics 7915
Electrical characteristics at specified virtual junction temperature, V
I
= -23V, I
O
= 500mA (unless otherwise noted)
Parameter
Output voltage**
I
O
= 5mA to 1A,
V
I
= -17.5V to -30V,
P≤15W
V
I
= -17.5V to -30V
V
I
= -20V to -26V
V
I
= -18.5V to -28.5V,
f= 120Hz
I
O
= 5mA to 1.5A
I
O
= 250mA to 750mA
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
Bias current
Bias current change
Peak output current
I
O
= 5mA
f= 10 Hz to 100 KHz
I
O
= 1A
0°to 125°
C
C
25°
C
25°
C
25°
C
0°to 125°
C
C
25°
C
Test Conditions*
25°
C
0°to 125°
C
C
Min
-14.4
-
14.25
7915
Typ
-15
-15
Units
Max
-15.6
-
15.75
100
50
V
Input regulation
Ripple rejection
Output regulation
25°
C
0°to 125°
C
C
25°
C
54
5
3
60
15
5
-1
375
1.1
2
0.04
0.06
2.1
mV
dB
200
75
mV
mV/°
C
µ
V
V
3
0.5
0.5
mA
A
V
I
= -17.5V to -30V
I
O
= 5mA to 1A
Electrical Characteristics 7918
Electrical characteristics at specified virtual junction temperature, V
I
= -27V, I
O
= 500mA (unless otherwise noted)
Parameter
Output voltage**
I
O
= 5mA to 1A,
V
I
= -21V to -33V, P≤
15W
V
I
= -21V to -33V
V
I
= -24V to -30V
V
I
= -22V to -32V,
f= 120Hz
I
O
= 5mA to 1.5A
I
O
= 250mA to 750mA
I
O
= 5mA
f= 10Hz to 100 KHz
I
O
= 1A
Test Conditions*
25°
C
0°to 125°
C
C
25°
C
0°to 125°
C
C
25°
C
0°to 125°
C
C
25°
C
25°
C
25°
C
0°to 125°
C
C
25°
C
54
Min
-17.3
-17.1
MIK7918
Typ
-18
-18
5
3
60
30
10
-1.0
450
1.1
2
0.04
0.06
2.1
360
180
Units
Max
-18.7
-18.9
360
180
V
mV
dB
mV
mV/°
C
µ
V
V
3
1
0.5
mA
A
Input regulation
Ripple rejection
Output regulation
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
Bias current
Bias current change
Peak output current
*
V
I
= -21V to -33V
I
O
= 5mA to 1A
Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. Thermal
effects must be taken into account separately.
**
This specification applies only for dc power dissipation permitted by absolute maximum ratings.
BEIJING ESTEK ELECTRONICS CO.,LTD
5
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