LM7808 데이터 시트보기 (PDF) - Semelab - > TT Electronics plc
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LM7808 Datasheet PDF : 2 Pages
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SEME
LAB
LM7808
ELECTRICAL CHARACTERISTICS (Tcase = 25°C unless stated)
OUTPUT VOLTAGE
8
INPUT VOLTAGE
14
(unless otherwise specified)
Parameter
Test Conditions
Min.
Typ.
Max.
VO Output Voltage
DVO Line Regulation
DVO Load Regulation
Tj = 25°C
IO = 5mA to 1A
PO £ 15W
Tj = 25°C
IO = 5mA to 1.5A
IO = 250 to 750 mA
Tj = 25°C
Tj = 25°C
7.7
8
8.3
7.6
8
8.4
(Vi = 11.6 to 23V)
80
(Vi = 10.5 to 25V)
40
(Vi = 11 to 17V)
100
50
Id Quiescent Current
Tj = 25°C
8
DId Quiescent Current Change IO = 5mA to 1A
DVO
DT
Output Voltage Drift
IO = 5mA
0.5
1
(Vi = 11.5 to 25V)
–1
eN Output Noise Voltage
SVR Supply Voltage Rejection
Vd Dropout Voltage
Isc Short Circuit Current
B = 10Hz to 100kHz Tj = 25°C
f = 100Hz
IO = 1A
DVO = 100mV
VI = 35V
Tj = 25°C
Tj = 25°C
40
62
(Vi = 11.5 to 21.5V)
2
750
Unit
V
mV
mV
mA
mA
mV
/
°C
mV
dB
V
mA
Iscp Short Circuit Peak Current Tj = 25°C
2.2
A
THERMAL DATA
RTHj-case
RTHj-amb
Thermal Resistance Junction – Case
Thermal Resistance Junction – Ambient
Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Max. 3°C / W
Max. 50°C / W
Prelim. 7/00
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