Data Sheet

KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 16
Electrical Characteristics (KA7812AE)
Refer to the test circuit, 0°C < T
J
< +125°C, I
O
= 1 A, V
I
= 19 V, C
I
= 0.33 μF, C
O
= 0.1 μF, unless otherwise specified.
Notes:
27. Load and line regulation are specified at constant junction temperature. Change in V
O
due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
28. These parameters, although guaranteed, are not 100% tested in production.
Symbol Parameter Conditions Min. Typ. Max. Unit
V
O
Output Voltage
T
J
= +25°C 11.75 12.00 12.25
V
I
O
= 5 mA to 1 A, P
O
≤ 15 W,
V
I
= 14.8 V to 27 V
11.50 12.00 12.50
Regline Line Regulation
(27)
V
I
= 14.8 V to 30 V, I
O
= 500 mA 10 120
mV
V
I
= 16 V to 22 V 4 120
T
J
= +25°C
V
I
= 14.5 V to 27 V 10 120
V
I
= 16 V to 22 V 3 60
Regload
Load Regulation
(27)
T
J
= +25°C, I
O
= 5 mA to 1.5 A 12 100
mVI
O
= 5 mA to 1.0 A 12 100
I
O
= 250 mA to 750 mA 5 50
I
Q
Quiescent Current T
J
= +25°C5.16.0mA
ΔI
Q
Quiescent Current Change
V
I
= 15 V to 30 V, T
J
= +25°C0.8
mAV
I
= 14 V to 27 V, I
O
= 500 mA 0.8
I
O
= 5 mA to 1.0 A 0.5
ΔV/ΔT Output Voltage Drift
(28)
I
O
= 5 mA -1 mV/°C
V
N
Output Noise Voltage f = 10 Hz to 100 kHz, T
A
= +25°C76 μV
RR Ripple Rejection
(28)
f = 120 Hz, I
O
= 500 mA,
V
I
= 14 V to 24 V
60 dB
V
Drop
Dropout Voltage I
O
= 1 A, T
J
= +25°C2V
R
O
Output Resistance
(28)
f = 1 kHz 18 mΩ
I
SC
Short-Circuit Current V
I
= 35 V, T
A
= +25°C250mA
I
PK
Peak Current
(28)
T
J
= +25°C2.2A