KA7805, Elektronika, elementy

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KA78XX/KA78XXA
3-terminal 1A positive voltage regulator
Features
• Output Current up to 1A
• Output Voltages of 5, 6, 8, 9, 10, 11, 12, 15, 18, 24V
• Thermal Overload Protection
• Short Circuit Protection
• Output Transistor Safe Operating area Protection
Description
The KA78XX/KA78XXA series of three-terminal positive
regulator are available in the TO-220/D-PAK package and
with several fixed output voltages, making them useful in a
wide range of applications. Each type employs internal cur-
rent limiting, thermal shut-down and safe operating area pro-
tection, making it essentially indestructible. If adequate heat
sinking is provided, they can deliver over 1A output current.
Although designed primarily as fixed voltage regulators,
these devices can be used with external components to
obtain adjustable voltages and currents.
TO-220
1
D-PAK
1
1. Input 2. GND 3. Output
Internal Block Digram
Rev. 5.0
©2000 Fairchild Semiconductor International
KA78XX/KA78XXA
Absolute Maximum Ratings
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
R
JC
5
°
C/W
Thermal Resistance Junction-Air
R
JA
65
°
C/W
Operating Temperature Range (KA78XX/A/R)
T
OPR
0 ~ +125
°
C
Storage Temperature Range
T
STG
-65 ~ +150
°
C
Electrical Characteristics (KA7805/KA7805R)
(Refer to test circuit ,0
°
C
< TJ < 125
°
C
, IO = 500mA, VI = 10V, CI= 0.33
F, C O= 0.1
F, unless otherwise specified)
Parameter
Symbol
Conditions
KA7805
Unit
Min. Typ. Max.
TJ =+25
o
C
4.8
5.0 5.2
Output Voltage
VO
5.0mA
≤
Io
≤
1.0A, P
O
≤
15W
V
I
= 7V to 20V
V
I
= 8V to 20V
V
4.75 5.0 5.25
Line Regulation
V
O
T
J
=+25
o
C
V
O
= 7V to 25V
-
4.0 100
mV
V
I
= 8V to 12V
-
1.6
50
Load Regulation
V
O
T
J
=+25
o
C
I
O
= 5.0mA to1.5A
-
9
100
mV
I
O
=250mA to 750mA
-
4
50
Quiescent Current
IQ
TJ =+25
o
C
-
5.0
8
mA
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
-
V
Ripple
_
Rejection
RR
f = 120Hz
V
O
= 8V to 18V
62
73
-
dB
Dropout Voltage
V
O
I
O
= 1A, T
J
=+25
o
C
-
2
-
V
Output Resistance
R
O
f = 1KHz
-
15
-
m
Short Circuit Current
ISC
VI = 35V, TA =+25
o
C
-
230
-
mA
Peak Current
I
PK
T
J
=+25
o
C
-
2.2
-
A
• 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.
2
KA78XX/KA78XXA
Electrical Characteristics (KA7806/KA7806R)
(Refer to test circuit ,0
°
C
< T
J
< +125
°
C
, I
O
= 500mA, V
I
= 11V, C
I
= 0.33
F, C
O
= 0.1
F, unless otherwise specified)
Parameter
Symbol
Conditions
KA7806
Unit
Min.
Typ.
Max.
T
J
=+25
o
C
5.75
6.0
6.25
Output Voltage
V
O
5.0mA
≤
I
O
≤
1.0A, P
D
≤
15W
VI = 8.0V to 21V
V
I
= 9.0V to 21V
V
5.7
6.0
6.3
Line Regulation
V
O
T
J
=+25
o
C
V
I
= 8V to 25V
-
5
120
mV
V
I
= 9V to 13V
-
1.5
60
Load Regulation
V
O
T
J
=+25
o
C
I
O
=5mA to 1.5A
-
9
120
mV
I
O
=250mA to750A
-
3
60
Quiescent Current
I
Q
T
J
=+25
o
C
-
5.0
8
mA
Quiescent Current Change
I
Q
I
O
= 5mA to 1A
-
-
0.5
mA
V
I
= 8V to 25V
-
-
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
-
45
-
V
Ripple
_
Rejection
RR
f = 120Hz
V
I
= 9V to 19V
59
75
-
dB
Dropout Voltage
V
O
I
O
= 1A, T
J
=+25
o
C
-
2
-
V
Output Resistance
R
O
f = 1KHz
-
19
-
m
Short Circuit Current
I
SC
V
I
= 35V, T
A
=+25
o
C
-
250
-
mA
Peak Current
IPK
TJ =+25
o
C
-
2.2
-
A
• 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.
3
KA78XX/KA78XXA
Electrical Characteristics (KA7808/KA7808R)
(Refer to test circuit ,0
°
C
< T
J
< +125
°
C
, I
O
= 500mA, V
I
= 14V, C
I
= 0.33
F, C
O
= 0.1
F, unless otherwise specified)
Parameter
Symbol
Conditions
KA7808
Unit
Min. Typ. Max.
T
J
=+25
o
C
7.7
8.0
8.3
Output Voltage
V
O
I
O
≤
1.0A, P
O
≤
15W
VI = 10.5V to 23V
V
I
= 11.5V to 23V
V
7.6
8.0
8.4
Line Regulation
V
O
T
J
=+25
o
C
V
I
= 10.5V to 25V
-
5.0
160
mV
V
I
= 11.5V to 17V
-
2.0
80
I
O
= 5.0mA to 1.5A
-
10
160
Load Regulation
V
O
T
J
=+25
o
C
I
O
= 250mA to
750mA
-
5.0
80
mV
Quiescent Current
I
Q
T
J
=+25
o
C
-
5.0
8
mA
I
O
= 5mA to 1.0A
-
0.05
0.5
Quiescent Current Change
I
Q
V
I
= 10.5A to 25V
-
0.5
1.0
mA
V
I
= 11.5V to 25V
-
-
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
-
52
-
V
Ripple
_
Rejection
RR
f = 120Hz, V
I
= 11.5V to 21.5
56
73
-
dB
Dropout Voltage
V
O
I
O
= 1A, T
J
=+25
o
C
-
2
-
V
Output Resistance
R
O
f = 1KHz
-
17
-
m
Short Circuit Current
ISC
VI= 35V, TA =+25
o
C
-
230
-
mA
Peak Current
I
PK
T
J
=+25
o
C
-
2.2
-
A
• 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.
4
5.0mA
≤
KA78XX/KA78XXA
Electrical Characteristics (KA7809/KA7809R)
(Refer to test circuit ,0
°
C
< T
J
< +125
°
C
, I
O
= 500mA, V
I
= 15V, C
I
= 0.33
F, C
O
= 0.1
F, unless otherwise specified)
Parameter
Symbol
Conditions
KA7809
Unit
Min. Typ. Max.
T
J
=+25
o
C
8.65
9
9.35
Output Voltage
V
O
5.0mA
I
O
1.0A, P
D
15W
VI= 11.5V to 24V
V
I
= 12.5V to 24V
8.6
9
9.4
V
Line Regulation
V
O
T
J
=+25
o
C
V
I
= 11.5V to 25V
-
6
180
mV
V
I
= 12V to 25v
-
2
90
Load Regulation
V
O
T
J
=+25
o
C
I
O
= 5mA to 1.5A
-
12
180
mV
I
O
= 250mA to 750mA
-
4
90
Quiescent Current
I
Q
T
J
=+25
o
C
-
5.0
8
mA
I
O
= 5mA to 1.0A
-
-
0.5
Quiescent Current Change
I
Q
V
I
= 11.5V to 26V
-
-
1.3
mA
VI = 12.5V to 26V
-
-
-
Output Voltage Drift
V
O
/
TI
O
= 5mA
-
-1
-
mV/
o
C
Output Noise Voltage
V
N
f = 10Hz to 100KHz, T
A
=+25
o
C
-
58
-
V
Ripple
_
Rejection
RR
f = 120Hz
VI = 13V to 23V
56
71
-
dB
Dropout Voltage
V
O
I
O
= 1A, T
J
=+25
o
C
-
2
-
V
Output Resistance
R
O
f = 1KHz
-
17
-
m
Short Circuit Current
I
SC
V
I
= 35V, T
A
=+25
o
C
-
250
-
mA
Peak Current
I
PK
T
J
= +25
o
C
-
2.2
-
A
• 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.
5
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