KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
August 2013
KA78XXE / KA78XXAE
3-Terminal 1 A Positive Voltage Regulator
Features
•
•
•
•
•
Output Current up to 1 A
Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24 V
Thermal Overload Protection
Short-Circuit Protection
Output Transistor Safe Operating Area Protection
Description
The KA78XXE / KA78XXAE series of three-terminal posi-
tive regulators is available in the TO-220 / D-PAK pack-
age with several fixed-output voltages, making them
useful in a wide range of applications. Each type employs
internal current limiting, thermal shut-down, and safe
operating area. If adequate heat sinking is provided, they
can deliver over 1 A output current. Although designed
primarily as fixed-voltage regulators, these devices can
be used with external components for adjustable voltages
and currents.
TO-220
(Dual Gauge)
GND
GND
D-PAK
1
1. Input
2. GND
3. Output
1
Block Diagram
INPUT
1
CURRENT
GENERATOR
SERIES
PASS
ELEMENT
OUTPUT
3
SOA
PROTECTION
STARTING
CIRCUIT
REFERENCE
VOLTAGE
ERROR
AMPLIFIER
THERMAL
PROTECTION
GND
2
Figure 1. Block Diagram
© 2006 Fairchild Semiconductor Corporation
KA78XXE / KA78XXAE Rev. 1.1.1
www.fairchildsemi.com
1
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
Ordering Information
Product Number
KA7805ETU
KA7806ETU
KA7808ETU
KA7809ETU
KA7810ETU
KA7812ETU
KA7815ETU
KA7818ETU
KA7824ETU
KA7805AETU
KA7809AETU
KA7810AETU
KA7812AETU
KA7815AETU
KA7824AETU
KA7805ERTF
KA7805ERTM
KA7808ERTM
KA7809ERTM
KA7812ERTM
Note:
1. Above output voltage tolerance is available at 25°C.
2. Refer to below figure for TM / TF Suffix for DPAK.
Output Voltage
Tolerance
Package
Operating
Temperature
Parking Method
±4%
TO-220 (Dual Gauge)
Rail
0°C to +125°C
±2%
±4%
D-PAK
Tape and Reel
© 2006 Fairchild Semiconductor Corporation
KA78XXE / KA78XXAE Rev. 1.1.1
www.fairchildsemi.com
2
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only.
Symbol
V
I
R
θJC
R
θJA
T
OPR
T
STG
Input Voltage
Parameter
V
O
= 5 V to 18 V
V
O
= 24 V
Value
35
40
5
65
0 to +125
-65 to +150
Unit
V
V
°C/W
°C/W
°C
°C
Thermal Resistance Junction-Cases (TO-220)
Thermal Resistance Junction-Air (TO-220)
Operating Temperature Range (KA78XXE / AE / ER)
Storage Temperature Range
© 2006 Fairchild Semiconductor Corporation
KA78XXE / KA78XXAE Rev. 1.1.1
www.fairchildsemi.com
3
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
Electrical Characteristics (KA7805E / KA7805ER)
Refer to test circuit, 0°C < T
J
< 125°C, I
O
= 500 mA, V
I
=10 V, C
I
= 0.33
μF,
C
O
=0.1
μF,
unless otherwise specified.
Symbol
V
O
Parameter
T
J
= +25°C
Output Voltage
Conditions
5.0 mA
≤
I
O
≤
1.0 A, P
O
≤
15 W,
V
I
= 7 V to 20 V
T
J
= +25°C
T
J
= +25°C
T
J
= +25°C
I
O
= 5 mA to 1.0 A
V
I
= 7 V to 25 V
I
O
= 5 mA
f = 10 Hz to 100 kHz, T
A
= +25°C
f = 120 Hz, V
I
= 8 V to 18 V
I
O
= 1 A, T
J
= +25°C
f = 1 kHz
V
I
= 35 V, T
A
= +25°C
T
J
= +25°C
V
I
= 7 V to 25 V
V
I
= 8 V to 12 V
I
O
= 5.0 mA to1.5 A
I
O
=250 mA to 750 mA
Min.
4.80
4.75
Typ.
5.00
5.00
4.0
1.6
9
4
5.0
0.03
0.30
-0.8
42
Max.
5.20
5.25
100.0
50.0
100
50
8.0
0.50
1.30
Unit
V
Regline
Regload
I
Q
ΔI
Q
ΔV
O
/ΔT
V
N
RR
V
Drop
R
O
I
SC
I
PK
Line Regulation
(3)
Load Regulation
(3)
Quiescent Current
Quiescent Current Change
Output Voltage Drift
(4)
Output Noise Voltage
Ripple Rejection
(4)
Dropout Voltage
Output Resistance
(4)
Short-Circuit Current
Peak Current
(4)
mV
mV
mA
mA
mV/°C
μV/V
O
dB
V
mΩ
mA
A
62
73
2
15
230
2.2
Notes:
3. 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.
4. These parameters, although guaranteed, are not 100% tested in production.
© 2006 Fairchild Semiconductor Corporation
KA78XXE / KA78XXAE Rev. 1.1.1
www.fairchildsemi.com
4
KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
Electrical Characteristics (KA7806E)
Refer to test circuit, 0°C < T
J
< 125°C, I
O
= 500 mA, V
I
= 11 V, C
I
= 0.33
μF,
C
O
= 0.1
μF,
unless otherwise specified.
Symbol
V
O
Parameter
T
J
= +25°C
Output Voltage
Conditions
5.0 mA
≤
I
O
≤
1.0 A, P
O
≤
15 W,
V
I
= 8.0 V to 21 V
T
J
= +25°C
T
J
= +25°C
T
J
= +25°C
I
O
= 5 mA to 1 A
V
I
= 8 V to 25 V
I
O
= 5 mA
f = 10 Hz to 100 kHz, T
A
= +25°C
f = 120 Hz, V
I
= 9 V to 19 V
I
O
= 1 A, T
J
= +25°C
f = 1 kHz
V
I
= 35 V, T
A
= +25°C
T
J
= +25°C
V
I
= 8 V to 25 V
V
I
= 9 V to 13 V
I
O
= 5 mA to 1.5 A
I
O
= 250 mA to 750 mA
Min.
5.75
5.70
Typ.
6.00
6.00
5.0
1.5
9
3
5.0
Max.
6.25
6.30
120.0
60.0
120
60
8.0
0.5
1.3
Unit
V
Regline
Regload
I
Q
ΔI
Q
ΔV
O
/ΔT
V
N
RR
V
Drop
R
O
I
SC
I
PK
Line Regulation
(5)
Load Regulation
(5)
Quiescent Current
Quiescent Current
Change
Output Voltage Drift
(6)
Output Noise Voltage
Ripple Rejection
(6)
Dropout Voltage
Output Resistance
(6)
Short-Circuit Current
Peak Current
(6)
mV
mV
mA
mA
mV/°C
μV/Vo
dB
V
mΩ
mA
A
-0.8
45
59
75
2
19
250
2.2
Notes:
5. 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.
6. These parameters, although guaranteed, are not 100% tested in production.
© 2006 Fairchild Semiconductor Corporation
KA78XXE / KA78XXAE Rev. 1.1.1
www.fairchildsemi.com
5
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