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FAN1540 View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
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FAN1540
Fairchild
Fairchild Semiconductor Fairchild
FAN1540 Datasheet PDF : 15 Pages
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Electrical Characteristics—FAN1540D18X
Unless otherwise specified, VIN = 3.135V to 3.465V, Tj = 25°C, IMAX = 1.3A. Boldface limits apply over operating
junction temperature range of 0°C TJ 125°C.
Test Conditions
Test Limits
Parameter
Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
(Note 6)
Symbol
VOUT
REG(LINE)
REG(LOAD)
VD
VIN
3.15V VIN 3.465V
3.135V VIN 3.465V
3.3V
IOUT
5mA IOUT IMAX
5mA IOUT IMAX
5mA IOUT IMAX
IOUT = IMAX
Min. Typ.
1.755 1.800
3
20
0.9
Max.
1.845
10
40
1.2
Units
V
mV
mV
V
Current Limit
Min. Output
Current for
regulation
(VOUT 3%)
Temperature
Stability
IS
IOMIN
TS
3.3V
IOUT = 5mA
2.5
A
0
mA
0.3
%
RMS Output
VN
Noise (Note 7)
IOUT = IMAX
0.003
%VOUT
Ripple Rejection
RA
3.3V
IOUT = 500mA
40
dB
Ratio (Note 8)
Transient
Response
Change of VOUT
with step load
change (Note 9)
-----V-I--O-O---U-U--T--T-
3.3V
1mA to IMAX
tr 1µS
IMAX to 1mA
tf 1µS
2.0
10
(undershoot %
or overshoot
of VOUT)
Transient
Response
Change of VOUT
with application of
VIN (Note 9)
-----V--V--O---I-UN----T-
0 to 1.8V Step Input
tr 1µS
10% to 90%
1mA IOUT IMAX
3.0
10
%
(undershoot
or overshoot
of VOUT)
Transient
Response
Short circuit
Removal
Response
(Note 9)
-----V--V--O--I--UN----T-
@IOUT =
short
3.3V
IOUT = short
to
IOUT = 10mA
3.0
10
%
(overshoot
or under-
shoot of VO)
Quiescent Current
Quiescent Current
Thermal Shutdown
Thermal Hysteresis
IGND
IGND
TjSD
THYST
3.3V
3.3V
IOUT = 0mA
2mA IOUT IMAX
1.0
2.0
mA
1.0
2.0
mA
160
°C
10
°C
Notes:
6 Dropout voltage is defined as the input to output differential voltage at which the output voltage drops 1% below the
nominal value measured at VIN = 3.3V.
7. Measured within 10Hz to 10kHz bandwidth.
8. Measured at DC, specified at 120 Hz.
9. CIN = 22µF, COUT = 10µF. Both capacitors are low ESR X7R type.
6
FAN1539/FAN1540 Rev. 1.1.1
www.fairchildsemi.com
 

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