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KA7812A 数据手册 - Fairchild（飞兆/仙童）
制造商:
Fairchild（飞兆/仙童）
封装:
TO-220
描述:
3端子1A正电压稳压器 3-Terminal 1A Positive Voltage Regulator
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KA7812A数据手册
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KA78XX/KA78XXA
2
Absolute Maximum Ratings
Electrical Characteristics (KA7805/KA7805R)
(Refer to test circuit ,0
°
C < T
J
< 125
°
C, I
O
= 500mA, V
I
=10V, C
I
= 0.33µF, C
O
=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in V
o
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Value Unit
Input Voltage (for V
O
= 5V to 18V)
(for V
O
= 24V)
V
I
V
I
35
40
V
V
Thermal Resistance Junction-Cases (TO-220) R
θJC
5
°
C/W
Thermal Resistance Junction-Air (TO-220) R
θJA
65
°
C/W
Operating Temperature Range (KA78XX/A/R) T
OPR
0 ~ +125
°
C
Storage Temperature Range T
STG
-65 ~ +150
°
C
Parameter Symbol Conditions
KA7805
Unit
Min. Typ. Max.
Output Voltage V
O
T
J
=+25
o
C 4.8 5.0 5.2
5.0mA ≤ Io ≤ 1.0A, P
O
≤ 15W
V
I
= 7V to 20V 4.75 5.0 5.25
V
Line Regulation (Note1) Regline T
J
=+25
o
C
V
O
= 7V to 25V - 4.0 100
mV
V
I
= 8V to 12V - 1.6 50
Load Regulation (Note1) Regload T
J
=+25
o
C
I
O
= 5.0mA to1.5A - 9 100
mV
I
O
=250mA to 750mA - 4 50
Quiescent Current I
Q
T
J
=+25
o
C-5.08.0mA
Quiescent Current Change ∆I
Q
I
O
= 5mA to 1.0A - 0.03 0.5
mA
V
I
= 7V to 25V - 0.3 1.3
Output Voltage Drift ∆V
O
/∆TI
O
= 5mA - -0.8 - mV/
o
C
Output Noise Voltage V
N
f = 10Hz to 100KHz, T
A
=+25
o
C-42-µV/V
O
Ripple Rejection RR
f = 120Hz
V
O
= 8V to 18V
62 73 - dB
Dropout Voltage V
Drop
I
O
= 1A, T
J
=+25
o
C-2-V
Output Resistance r
O
f = 1KHz - 15 - mΩ
Short Circuit Current I
SC
V
I
= 35V, T
A
=+25
o
C - 230 - mA
Peak Current I
PK
T
J
=+25
o
C-2.2-A
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