AN78L00 Datasheet, PDF (8/9 Pages) Panasonic Semiconductor – 3-pin Positive Output Voltage Regulator 100mA Type

s Electrical Characteristics (Ta=25˚C)
· ^{AN78L24/AN78L24M (24V Type)}
Parameter
Symbol
Condition
min typ max Unit
Output voltage
VO
Tj=25˚C
23
24
25
V
Output voltage tolerance
VO
VI=26.5 to 39V, IO=1 to 70mA
22.8
25.2
V
Line regulation
REGIN
VI=26.5 to 39V, Tj=25˚C
VI=27 to 39V, Tj=25˚C
60 300 mV
50 250 mV
Load regulation
REGL
IO=1 to 100mA, Tj=25˚C
IO=1 to 40mA, Tj=25˚C
40 200 mV
20 100 mV
Bias current
Input bias current fluctuation
Load bias current fluctuation
Output noise voltage
Ibias
∆Ibias (IN)
∆Ibias (L)
Vno
Tj=25˚C
VI=27 to 39V, Tj=25˚C
IO=1 to 40mA, Tj=25˚C
f=10Hz to 100kHz
2
3.5 mA
1 mA
0.1 mA
200
µV
Ripple rejection ratio
RR
VI=27 to 37V, IO=40mA, f=120Hz
34
44
dB
Minimum I/O voltage difference
VDIF (min.)
Tj=25˚C
1.7
V
Output short-circuit current
Output voltage temperature cofficient
IO (Short)
∆VO/Ta
Tj=25˚C , VI=35V
IO=5mA, Tj=0 to 125˚C
140
mA
–2
mV/˚C
Note 1) The specified condition Tj=25˚C means that the test should be conducted with each test time reducedt (within 10ms) so that
the drift in characteristic value due to a temperature rise at chip junction can be innored.
Note 2) Unless otherwise specified, VI=33V, IO=40mA, CI=0.33µF, CO=0.1µF, Tj=0 to 125˚C (AN78L24) and Tj=0 to 100˚C
(AN78L24M).
s Basic Regulator Circuit
Input
1
2
AN78L00
CI
3
Output
CO
CI : Required when the input line is long
CO : Improves the transient response
s Application Circuit
VI
Q1
20Ω
0.33µF
1
2
AN78L00
3
VI
IO
VO
1
2
AN78L00
3
VO´
VO
R2
0.1µF
Ibias
VO=VO´ +
Ibias +
VO
R2
R1
R1