Diodes AS78XXA - Manual (Page 11)

AS78XXA
Document number: DS36562 Rev. 3 - 2
11 of 23
www.diodes.com
September 2013
© Diodes Incorporated
AS78XXA
A Product Line of
Diodes Incorporated
Electrical Characteristics
(Cont.)
AS7818A
(@ V
IN
= 27V, I
OUT
= 1A, T
J
= -40 to +125°C, unless otherwise specified.)
Symbol Parameter Conditions Min Typ Max Unit
V
OUT
Output Voltage
T
J
= +25°C 17.64 18 18.36
V
I
OUT
= 5mA to 1A, V
IN
= 21V to
33V, P
D
≤ 15W
17.3 – 18.7
V
RLINE
Line Regulation
V
IN
= 21V to 33V,
I
OUT
= 500mA, T
J
= +25°C
– 45 180 mV
V
RLOAD
Load Regulation
V
IN
= 27V, I
OUT
= 5mA to 1A, T
J
=
+25°C
– 85 180 mV
I
Q
Quiescent Current V
IN
= 27V, I
OUT
= 0 – 3.6 6 mA
△ I
Q Quiescent Current Change
V
IN
= 21V to 33V, I
OUT
= 500mA,
T
J
= +25°C
– 0.3 0.8
mA
I
OUT
= 5mA to 1A, T
J
= +25°C – 0.08 0.5
PSRR Ripple Rejection
V
IN
= 22V to 32V, f = 120Hz, I
OUT
= 500mA
– 57 – dB
V
DROP
Dropout Voltage
△ V
OUT
= 1%, I
OUT
= 1A, T
J
=
+25°C
– 2 – V
N
O Output Noise Voltage f = 10Hz to 100kHz, T
A
= +25°C – 10 – µV/V
O
R
O Output Resistance f = 1kHz – 11 – mΩ
I
SC Short Circuit Current V
IN
= 35V, T
A
= +25°C – 0.2 – A
I
PK
Peak Output Current V
IN
= 24V, T
J
= +25°C – 2.2 – A
△ V
OUT
/△T
Output Voltage Temperature
Coefficient
– – 1.44 – mV/°C
(△V
OUT
/V
OUT
)/
△ T
– – 80 – ppm/°C
θ
JC
Thermal Resistance
TO-220-3 – 9 –
°C/W
TO-252-2 (3)/
TO-252-2 (4)/
TO-252-2 (5)
– 16 –
TO-220F-3 – 9 –