LAB
MECHANICAL DATA
Dimensions in mm
1 0.6
0.8
4.6
SEME
LM7808
8 VOLT POSITIVE
VOLTAGE REGULATOR
3.6
Dia.
16.5
FEATURES
•
HERMETIC TO220 METAL OR CERAMIC
SURFACE MOUNT PACKAGES
•
SCREENING OPTIONS AVAILABLE
•
ALL LEADS ISOLATED FROM CASE
(METAL PACKAGE)
1.0
1 3 .5
1 0 .6
1 23
1 3 .7 0
2 .5 4
BSC
0 .8 9
(0 .0 3 5 )
m in .
3 .7 0 (0 .1 4 6 )
3 .7 0 (0 .1 4 6 )
3 .4 1 (0 .1 3 4 )
3 .4 1 (0 .1 3 4 )
4 .1 4 (0 .1 6 3 )
3 .8 4 (0 .1 5 1 )
2. 70
BSC
•
8 VOLT REGULATOR
3 .6 0 (0 .1 4 2 )
M a x .
• OUTPUT CURRENT UP TO 1.5A
• THERMAL OVERLOAD PROTECTION
1
3
0 .7 6
(0 .0 3 0 )
m in .
1 6 .0 2 (0 .6 3 1 )
1 5 .7 3 (0 .6 1 9 )
1 0 .6 9 (0 .4 2 1 )
1 0 .3 9 (0 .4 0 9 )
2
• SHORT CIRCUIT PROTECTION
• OUTPUT TRANSISTOR SOA PROTECTION
9 .6
9 .3
1 1 .5
1 1 .2
7 (0
8 (0
8 (0
8 (0
.3 8
.3 6
.4 5
.4 4
1 )
9 )
6 )
4 )
0 .5 0 (0 .0 2 0 )
0 .2 6 (0 .0 1 0 )
PIN 1 - Input
PIN 2 -Ground
PIN 3 - Output
TO220M
SMD1
- TO220 Metal Package - Isolated
- Ceramic Surface Mount Package
Also available in TO39 Package.
ABSOLUTE MAXIMUM RATINGS
(Tcase = 25°C unless otherwise stated)
V
i
I
O
P
D
T
j
T
stg
Semelab plc.
DC Input Voltage
Output Current
Power Dissipation
Junction Temperature
Storage Temperature
35V
Internally limited
Internally limited
150°C
–65 to 150°C
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
Prelim. 7/00
LAB
ELECTRICAL CHARACTERISTICS
(Tcase = 25°C unless stated)
OUTPUT VOLTAGE
INPUT VOLTAGE
(unless otherwise specified)
SEME
LM7808
8
14
Test Conditions
T
j
= 25°C
I
O
= 5mA to 1A
T
j
= 25°C
I
O
= 5mA to 1.5A
I
O
= 250 to 750 mA
T
j
= 25°C
I
O
= 5mA to 1A
(V
i
= 11.5 to 25V)
Parameter
V
O
Output Voltage
Min.
7.7
P
O
£
15W
7.6
Typ.
8
8
(V
i
= 11.6 to 23V)
Max.
8.3
8.4
80
Unit
V
D
V
O
Line Regulation
(V
i
= 10.5 to 25V)
40
(V
i
= 11 to 17V)
mV
D
V
O
Load Regulation
Quiescent Current
T
j
= 25°C
T
j
= 25°C
100
mV
50
8
0.5
mA
I
d
I
d
D
Quiescent Current Change
1
mA
mV
/
°C
D
V
O
Output Voltage Drift
D
T
e
N
Output Noise Voltage
I
O
= 5mA
B = 10Hz to 100kHz
T
j
= 25°C
62
–1
40
m
V
SVR Supply Voltage Rejection
f = 100Hz
I
O
= 1A
D
(V
i
= 11.5 to 21.5V)
dB
V
d
I
sc
Dropout Voltage
T
j
= 25°C
2
V
V
O
= 100mV
T
j
= 25°C
750
mA
Short Circuit Current
V
I
= 35V
T
j
= 25°C
I
scp
Short Circuit Peak Current
2.2
A
THERMAL DATA
R
THj-case
R
THj-amb
Thermal Resistance Junction – Case
Thermal Resistance Junction – Ambient
Max. 3°C / W
Max. 50°C / W
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail:
sales@semelab.co.uk
Website:
http://www.semelab.co.uk
Prelim. 7/00
