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MC78XX Datasheet(PDF) 5 Page - Fairchild Semiconductor

Part No. MC78XX
Description  3-Terminal 1A Positive Voltage Regulator
Download  28 Pages
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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MC78XX Datasheet(HTML) 5 Page - Fairchild Semiconductor

 
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MC78XX/LM78XX/MC78XXA
5
Electrical Characteristics (MC7809)
(Refer to test circuit ,0
°C < TJ < 125°C, IO = 500mA, VI =15V, CI= 0.33µF, CO= 0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter
Symbol
Conditions
MC7809
Unit
Min.
Typ.
Max.
Output Voltage
VO
TJ =+25
°C
8.65
9
9.35
5.0mA
≤ IO ≤1.0A, PO ≤15W
VI= 11.5V to 24V
8.6
9
9.4
V
Line Regulation (Note1)
Regline
TJ=+25
°C
VI = 11.5V to 25V
-
6
180
mV
VI = 12V to 17V
-
2
90
Load Regulation (Note1)
Regload
TJ=+25
°C
IO = 5mA to 1.5A
-
12
180
mV
IO = 250mA to 750mA
-
4
90
Quiescent Current
IQ
TJ=+25
°C-
5.0
8.0
mA
Quiescent Current Change
∆IQ
IO = 5mA to 1.0A
-
-
0.5
mA
VI = 11.5V to 26V
-
-
1.3
Output Voltage Drift
∆VO/∆TIO = 5mA
-
-1
-
mV/
°C
Output Noise Voltage
VN
f = 10Hz to 100KHz, TA =+25
°C-
58
-
µV/Vo
Ripple Rejection
RR
f = 120Hz
VI = 13V to 23V
56
71
-
dB
Dropout Voltage
VDrop
IO = 1A, TJ=+25
°C-
2
-
V
Output Resistance
rO
f = 1KHz
-
17
-
m
Short Circuit Current
ISC
VI= 35V, TA =+25
°C
-
250
-
mA
Peak Current
IPK
TJ= +25
°C-
2.2
-
A


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