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KA7812A 数据表(PDF) 4 Page - Fairchild Semiconductor

部件名 KA7812A
功能描述  3-Terminal 1A Positive Voltage Regulator
Download  28 Pages
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

KA7812A 数据表(HTML) 4 Page - Fairchild Semiconductor

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KA78XX/KA78XXA
4
Electrical Characteristics (KA7808/KA7808R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =14V, CI= 0.33
µF, 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
KA7808
Unit
Min.
Typ.
Max.
Output Voltage
VO
TJ =+25
oC
7.7
8.0
8.3
5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W
VI = 10.5V to 23V
7.6
8.0
8.4
V
Line Regulation (Note1)
Regline
TJ =+25
oC
VI = 10.5V to 25V
-
5.0
160
mV
VI = 11.5V to 17V
-
2.0
80
Load Regulation (Note1)
Regload
TJ =+25
oC
IO = 5.0mA to 1.5A
-
10
160
mV
IO= 250mA to
750mA
-5.0
80
Quiescent Current
IQ
TJ =+25
oC-
5.0
8.0
mA
Quiescent Current Change
∆IQ
IO = 5mA to 1.0A
-
0.05
0.5
mA
VI = 10.5A to 25V
-
0.5
1.0
Output Voltage Drift
∆VO/∆TIO = 5mA
-
-0.8
-
mV/ oC
Output Noise Voltage
VN
f = 10Hz to 100KHz, TA =+25
oC-
52
-
µV/Vo
Ripple Rejection
RR
f = 120Hz, VI= 11.5V to 21.5V
56
73
-
dB
Dropout Voltage
VDrop
IO = 1A, TJ=+25
oC-
2
-
V
Output Resistance
rO
f = 1KHz
-
17
-
m
Short Circuit Current
ISC
VI= 35V, TA =+25
oC
-
230
-
mA
Peak Current
IPK
TJ =+25
oC-
2.2
-
A


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