Data Sheet

KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 12
Electrical Characteristics (KA7824E)
Refer to test circuit, -40°C < T
J
< 125°C, I
O
= 500 mA, V
I
= 33 V, C
I
= 0.33 μF, C
O
= 0.1 μF, unless otherwise specified.
Notes:
19. 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.
20. 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 23.00 24.00 25.00
V
5.0 mA ≤ I
O
≤ 1.0 A, P
O
≤ 15 W,
V
I
= 27 V to 38 V
22.80 24.00 25.25
Regline Line Regulation
(19)
T
J
= +25°C
V
I
= 27 V to 38 V 17 480
mV
V
I
= 30 V to 36 V 6 240
Regload Load Regulation
(19)
T
J
= +25°C
I
O
= 5 mA to 1.5 A 15 480
mV
I
O
= 250 mA to 750 mA 5 240
I
Q
Quiescent Current T
J
= +25°C5.28.0mA
ΔI
Q
Quiescent Current
Change
I
O
= 5 mA to 1.0 A 0.1 0.5
mA
V
I
= 27 V to 38 V 0.5 1.0
ΔV
O
/ΔT Output Voltage Drift
(20)
I
O
= 5mA -1.5 mV/°C
V
N
Output Noise Voltage f = 10 Hz to 100 kHz, T
A
= +25°C120μV
RR Ripple Rejection
(20)
f = 120 Hz, V
I
= 28 V to 38 V 50 67 dB
V
Drop
Dropout Voltage I
O
= 1 A, T
J
= +25°C2V
R
O
Output Resistance
(20)
f = 1 kHz 28 mΩ
I
SC
Short-Circuit Current V
I
= 35 V, T
A
= +25°C230mA
I
PK
Peak Current
(20)
T
J
= +25°C2.2A