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FAN1540D18X View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
View to exact match
FAN1540D18X
Fairchild
Fairchild Semiconductor Fairchild
FAN1540D18X Datasheet PDF : 15 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Typical Performance Characteristics—FAN1539MPX, FAN1540MPX,
FAN1540MMPX, FAN1540DX (Continued)
Line Transient Response
I OUT = I MAX
Load Transient Response
3.300V
VIN = 5V
3.300V
CIN = 22µF
COUT = 10µF
(Ceramic Low ESR Capacitors)
CIN = 22µF
COUT = 10µF
(Ceramic Low ESR Capacitors)
t r = 1µs
Tj = 25°C
t r = 1µs
tf = 1µs
Tj = 25°C
Time (20µs/div)
Time (20µs/div)
Short Circuit Removal Response
3.300V
VIN = 5V
CIN = 22µF
COUT = 10µF
(Ceramic Low ESR Capacitors)
10 mA
~3.3A
tf = 1µs
Tj = 25°C
Time (40µs/div)
Ripple Rejection vs. Frequency
100
90
80
70
60
50
40
30
VIN = 5V
20
I OUT = 10mA
COUT = 10µF (Low ESR)
10
0
101
102
103
104
105
106
Frequency (Hz)
Output Spectral Noise Density
vs. Frequency
2.0
1.8
VIN = 5V
1.6
IOUT = IMAX
1.4
1.2
1.0
0.8
0.6
0.4 CIN = 22µF
COUT = 10µF
0.2 Ceramic Low ESR
0
10
100
1K
10K
100K
Fr eq ue ncy (H z)
Typical Region of Stability
ESR vs. Output Current*
1000
Region of Instability
100
Region of Stability
10
1
0.1
0
VIN = 5V
CIN = 22µF
COUT = 10µF
Tj = 25°C
200
400
600
800 1000 1200
Output Current (mA)
*Note: ESR Values measured at f = 10kHz
1400
Note:
Transient response tests require short lead lengths and low resistance connections at source and load.
9
FAN1539/FAN1540 Rev. 1.1.1
www.fairchildsemi.com
 

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