Data Sheet

KA78XXE / KA78XXAE — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78XXE / KA78XXAE Rev. 1.9 18
Electrical Characteristics (KA7824AE)
Refer to the test circuit, 0°C < T
J
< +125°C, I
O
=1 A, V
I
= 33 V, C
I
= 0.33 μF, C
O
= 0.1 μF, unless otherwise specified.
Notes:
31. 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.
32. 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 23.5 24.0 24.5
V
I
O
= 5 mA to 1 A, P
O
≤15 W,
V
I
= 27.3 V to 38 V
23.0 24.0 25.0
Regline
Line Regulation
(31)
V
I
= 27 V to 38 V, I
O
= 500 mA 18 240
mV
V
I
= 21 V to 33 V 6 240
T
J
= +25°C
V
I
= 26.7 V to 38 V 18 240
V
I
= 30 V to 36 V 6 120
Regload
Load Regulation
(31)
T
J
= +25°C, I
O
= 5 mA to 1.5 A 15 100
mVI
O
= 5 mA to 1.0 A 15 100
I
O
= 250 mA to 750 mA 7 50
I
Q
Quiescent Current T
J
= +25°C5.26.0mA
ΔI
Q
Quiescent Current Change
V
I
= 27.3 V to 38 V, T
J
= +25°C0.8
mAV
I
= 27.3 V to 38 V, I
O
= 500 mA 0.8
I
O
= 5 mA to 1.0 A 0.5
ΔV/ΔT Output Voltage Drift
(32)
I
O
= 5 mA -1.5 mV/°C
V
N
Output Noise Voltage f = 10 Hz to 100 kHz, T
A
= +25°C 120 μV
RR Ripple Rejection
(32)
f = 120 Hz, I
O
= 500 mA,
V
I
= 28 V to 38 V
54 dB
V
Drop
Dropout Voltage I
O
= 1 A, T
J
= +25°C2V
R
O
Output Resistance
(32)
f = 1 kHz 20 mΩ
I
SC
Short-Circuit Current V
I
= 35 V, T
A
= +25°C 250 mA
I
PK
Peak Current
(32)
T
J
= +25°C2.2A