LM78XX / LM78XXA — 3-Terminal 1 A Positive Voltage Regulator
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
LM78XX / LM78XXA Rev . 1.3.0 16
Electrical Characteristics (LM7815A)
Refer to the test circuit, 0°C < TJ < 125°C, IO = 1 A, VI = 23 V, CI = 0.33 μF, CO = 0.1 μF, unless otherwise specified.
Notes:
28. Load and line re gulati on are s pecifi ed at co nstan t junction temperature . Cha nges in VO due to heating effec ts mu st
be taken into account separately. Pulse testing with low duty is used.
29. These parameters, although guaranteed, are not 100% tested in production.
Symbol Parameter Conditions Min. Typ. Max. Unit
VOOutput Voltage TJ = +25°C 14.75 15.00 15.30 V
IO = 5 mA to 1 A, PO ≤ 15 W,
VI = 17.7 V to 30 V 14.40 15.00 15.60
Regline Line Regulation(28)
VI = 17.4 V to 30 V, IO = 50 0 mA 10.0 150.0
mV
VI = 20 V to 26 V 5.0 150.0
TJ = +25°CVI = 17.5 V to 30 V 11.0 150.0
VI = 20 V to 26 V 3.0 75.0
Regload Load Regulation(28) TJ = +25°C, IO = 5 mA to 1.5 A 12.0 100.0 mVIO = 5 mA to 1 A 12.0 100.0
IO = 250 mA to 750 mA 5.0 50.0
IQQuiescent Current TJ =+25°C5.26.0mA
ΔIQQuiescent Current
Change
IO = 5 mA to 1 A 0.5 mAVI = 17.5 V to 30 V, IO = 50 0 mA 0.8
VI = 17.5 V to 30 V, TJ = +25°C0.8
ΔVO/ΔT Output Voltage Dr ift(29) IO = 5 mA -1.0 mV/°C
VNOutput Noise Voltage f = 10 Hz to 100 kHz, TA = +25°C 10.0 μV/VO
RR Ripple Rejection(29) f = 120 Hz, VO = 500 mA,
VI =18.5 V to 28.5 V 58.0 dB
VDROP Dropout Voltage IO = 1 A, TJ =+25°C2.0V
ROOutput Resistance(29) f = 1 kHz 19.0 mΩ
ISC Short-Circ uit Current VI = 35 V, TJ =+25°C250mA
IPK Peak Current(29) TJ =+25°C2.2A