SGS Thomson Microelectronics L78S10T, L78S09CV, L78S09CT, L78S05T, L78S05CV Datasheet
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L78S00
SER IES
January 1993
2A POSITIVEVOLTAGE REGULATORS
.OUTPUTCURRENT TO 2A
.OUTPUTVOLTAGESOF5;7.5; 9; 10;12; 15;
18 ; 24V
.THERMALOVERLOAD PROTECTION
.SHORTCIRCUIT PROTECTION
.OUTPUTTRANSISTOR SOA PROTECTION
DESCRIPTION
The L78S00 series ofthree-terminal positive regulators is available in TO-220 and TO-3 packages
and with several fixed output voltages, making it
useful in a widerange of applications. Theseregulators canprovide local on-cardregulation, eliminating the distribution problems associated with single
pointregulation. Eachtypeemploysinternalcurrent
limiting, thermal shut-down and safe area protection,makingitessentially indestructible. Ifadequate
heat sinking is provided, they can deliver over 2A
outputcurrent. Althoughdesigned primarily as fixed
voltage regulators, these devices can be used with
external components to obtain adjustable voltages
and currents.
TO-220
BLOCK DIAGRAM
TO-3
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ABSOLUTE MAXI MUM RAT IN G S
Symbol Parameter Value Unit
V
i
DC Input Voltage (for Vo= 5 to 18V)
(for V
o
=24V)
35
40
V
V
I
o
Output Current Internally limited
P
tot
Power Dissipation Internally limited
T
stg
Storage Temperature – 65 to + 150 °C
T
op
Operating Junction Temperature (for L78S00)
(for L78S00C )
–55to+150
0to+150
°C
°C
THERMALDATA
TO-220 TO-3
R
th j-case
R
th j-amb
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
Max
Max
3
50
4
35
°C/W
°C/W
CONN E CTION DIAGRAMS A N D ORDERI NG NUMBERS (top views)
Type TO-220 TO -3 Output Voltage
L78S05
L78S05C
L78S75
L78S75C
L78S09
L78S09C
L78S10
L78S10C
L78S12
L78S12C
L78S15
L78S15C
L78S18
L78S18C
L78S24
L78S24C
L78S05CV
L78S75CV
L78S09CV
L78S10CV
L78S12CV
L78S15CV
L78S18CV
L78S24CV
L78S05T
L78S05CT
L78S75T
L78S75CT
L78S09T
L78S09CT
L78S10T
L78S10CT
L78S12T
L78S12CT
L78S15T
L78S15CT
L78S18T
L78S18CT
L78S24T
L78S24CT
5V
5V
7.5V
7.5V
9V
9V
10V
10V
12V
12V
15V
15V
18V
18V
24V
24V
L78S00 SERIES
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APPLICATION CIRCUIT
SCHEMAT IC D I AGRAM
L78S00 SERIES
3/21
TEST CIRCUI TS
Figure 1 : DC Parameters. Figure 2 : Load Regulation.
Figure 3 : Ripple Rejection.
L78S00 SERIES
4/21
ELECTRICAL CHARACTERISTICS FOR L78S05 (refer to the test circuits, Tj=25oC,
Vi= 10V, Io= 500 mA unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage 4.8 5 5.2 V
V
o
Output Voltage Io=1A Vi= 7 V 4.75 5 5.25 V
∆V
o
Line Regulation Vi= 7 to 25 V
Vi= 8 to 25 V
100
50
mV
mV
∆V
o
Load Regulation Io= 20 mA to 2 A 100 mV
I
d
Quiescent Current 8mA
∆I
d
Quiescent Current Change Io= 20 mA to 1A 0.5 mA
∆I
d
Quiescent Current Change Io=20mA Vi= 7 to 25 V 1.3 mA
∆
V
o
∆
T
Output Voltage Drift Io= 5 mA Tj= -55 to 150oC -1.1 mV/oC
e
N
Output Noise Voltage B = 10Hz to 100KHz 40 µV
SVR Supply Voltage Rejection f = 120 Hz 60 dB
V
i
Operating Input Voltage Io≤ 1.5 A 8 V
R
o
Output Resistance f = 1KHz 17 mΩ
I
sc
Short Circuit Current Vi= 27 V 500 mA
I
scp
Short Circuit Peack Current 3 A
ELECTRICAL CHARACTERISTICS FOR L78S75 (refer to the test circuits, Tj=25oC,
Vi= 12.5V, Io= 500 mA unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage 7.15 7.5 7.9 V
V
o
Output Voltage Io=1A Vi= 9.5 V 7.1 7.5 7.95 V
∆V
o
Line Regulation Vi= 9.5 to 25 V
V
i
= 10.5 to 20 V
120
60
mV
mV
∆V
o
Load Regulation Io= 20 mA to 2 A 120 mV
I
d
Quiescent Current 8mA
∆I
d
Quiescent Current Change Io= 20 mA to 1A 0.5 mA
∆I
d
Quiescent Current Change Io=20mA Vi= 9.5 to 25 V 1.3 mA
∆
V
o
∆
T
Output Voltage Drift Io= 5 mA Tj= -55 to 150oC -0.8 mV/oC
e
N
Output Noise Voltage B = 10Hz to 100KHz 52 µV
SVR Supply Voltage Rejection f = 120 Hz 54 dB
V
i
Operating Input Voltage Io≤ 1.5 A 10.5 V
R
o
Output Resistance f = 1KHz 16 mΩ
I
sc
Short Circuit Current Vi= 27 V 500 mA
I
scp
Short Circuit Peack Current 3 A
L78S00 SERIES
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ELECTRICAL CHARACTERISTICS FOR L78S09 (refer to the test circuits, Tj=25oC,
Vi= 14V, Io= 500 mA unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage 8.65 9 9.35 V
V
o
Output Voltage Io=1A Vi= 11 V 8.6 9 9.4 V
∆V
o
Line Regulation Vi=11to25V
Vi=11to20V
130
65
mV
mV
∆V
o
Load Regulation Io= 20 mA to 2 A 130 mV
I
d
Quiescent Current 8mA
∆I
d
Quiescent Current Change Io= 20 mA to 1A 0.5 mA
∆I
d
Quiescent Current Change Io=20mA Vi= 11 to 25 V 1.3 mA
∆
V
o
∆
T
Output Voltage Drift Io= 5 mA Tj= -55 to 150oC -1 mV/oC
e
N
Output Noise Voltage B = 10Hz to 100KHz 60 µV
SVR Supply Voltage Rejection f = 120 Hz 53 dB
V
i
Operating Input Voltage Io≤ 1.5 A 12 V
R
o
Output Resistance f = 1KHz 17 mΩ
I
sc
Short Circuit Current Vi= 27 V 500 mA
I
scp
Short Circuit Peack Current 3 A
ELECTRICAL CHARACTERISTICS FOR L78S10 (refer to the test circuits, Tj=25oC,
Vi= 15V, Io= 500 mA unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage 9.5 10 10.5 V
V
o
Output Voltage Io=1A Vi= 12.5 V 9.4 10 10.6 V
∆V
o
Line Regulation Vi= 12.5 to 30 V
V
i
=14to22V
200
100
mV
mV
∆V
o
Load Regulation Io= 20 mA to 2 A 150 mV
I
d
Quiescent Current 8mA
∆I
d
Quiescent Current Change Io= 20 mA to 1A 0.5 mA
∆I
d
Quiescent Current Change Io=20mA Vi= 12.5 to 30 V 1 mA
∆
V
o
∆
T
Output Voltage Drift Io= 5 mA Tj= -55 to 150oC -1 mV/oC
e
N
Output Noise Voltage B = 10Hz to 100KHz 65 µV
SVR Supply Voltage Rejection f = 120 Hz 53 dB
V
i
Operating Input Voltage Io≤ 1.5 A 13 V
R
o
Output Resistance f = 1KHz 17 mΩ
I
sc
Short Circuit Current Vi= 27 V 500 mA
I
scp
Short Circuit Peack Current 3 A
L78S00 SERIES
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ELECTRICAL CHARACTERISTICS FOR L78S12 (refer to the test circuits, Tj=25oC,
Vi= 19V, Io= 500 mA unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage 11.5 12 12.5 V
V
o
Output Voltage Io=1A Vi= 14.5 V 11.4 12 12.6 V
∆V
o
Line Regulation Vi= 14.5 to 30 V
Vi=16to22V
240
120
mV
mV
∆V
o
Load Regulation Io= 20 mA to 2 A 160 mV
I
d
Quiescent Current 8mA
∆I
d
Quiescent Current Change Io= 20 mA to 1A 0.5 mA
∆I
d
Quiescent Current Change Io=20mA Vi= 14.5 to 30 V 1 mA
∆
V
o
∆
T
Output Voltage Drift Io= 5 mA Tj= -55 to 150oC -1 mV/oC
e
N
Output Noise Voltage B = 10Hz to 100KHz 75 µV
SVR Supply Voltage Rejection f = 120 Hz 53 dB
V
i
Operating Input Voltage Io≤ 1.5 A 15 V
R
o
Output Resistance f = 1KHz 18 mΩ
I
sc
Short Circuit Current Vi= 27 V 500 mA
I
scp
Short Circuit Peack Current 3 A
ELECTRICAL CHARACTERISTICS FOR L78S15 (refer to the test circuits, Tj=25oC,
Vi= 23V, Io= 500 mA unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage 14.4 15 15.6 V
V
o
Output Voltage Io=1A Vi= 17.5 V 14.25 15 15.75 V
∆V
o
Line Regulation Vi= 17.5 to 30 V
V
i
=20to26V
300
150
mV
mV
∆V
o
Load Regulation Io= 20 mA to 2 A 180 mV
I
d
Quiescent Current 8mA
∆I
d
Quiescent Current Change Io= 20 mA to 1A 0.5 mA
∆I
d
Quiescent Current Change Io=20mA Vi= 17.5 to 30 V 1 mA
∆
V
o
∆
T
Output Voltage Drift Io= 5 mA Tj= -55 to 150oC -1 mV/oC
e
N
Output Noise Voltage B = 10Hz to 100KHz 90 µV
SVR Supply Voltage Rejection f = 120 Hz 52 dB
V
i
Operating Input Voltage Io≤ 1.5 A 18 V
R
o
Output Resistance f = 1KHz 19 mΩ
I
sc
Short Circuit Current Vi= 27 V 500 mA
I
scp
Short Circuit Peack Current 3 A
L78S00 SERIES
7/21
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