FAN53540 Fairchild Semiconductor, FAN53540 Datasheet - Page 8

• Manufacturer Part Number: FAN53540
• Description: The FAN53540 is a step-down switching voltage regulator that delivers an adjustable output from an input voltage supply of 2
• Manufacturer: Fairchild Semiconductor

© 2011 Fairchild Semiconductor Corporation
FAN53540 • Rev. 1.0.2
Typical Characteristics
Unless otherwise specified; V
Figure 16. Quiescent Current, Auto Mode, EN=V
60
50
40
30
20
10
70
60
50
40
30
20
10
Figure 20. Line Transient, 50 Load, t
2.5
10
Figure 18. Power Supply Rejection (PSRR)
3.0
100
Input Voltage (V)
3.5
Frequency (Hz)
IN
=5V, V
1,000
4.0
OUT
=1.2V, V
4.5
10,000
R
=t
MODE
F
5.0
1.2VOUT,
25mA Load
1.2VOUT,
1.0A Load
3.3VOUT,
1.0A Load
=10s
=0V, T
-40C
+25C
+85C
IN
100,000
5.5
A
=25°C, circuit in Figure 1, and components per Table 1.
8
100%
95%
90%
85%
80%
75%
70%
Figure 17. Quiescent Current, PMW Mode, EN=V
Figure 19. Inductor Efficiency Comparison, 5.0V
Figure 21. Line Transient, I
50
40
30
20
10
0
2.5
0
1.2 VOUT, L=SC2511
1.2 VOUT, L=IHLP16
1.8 VOUT, L=SC2511
1.8 VOUT, L=IHLP16
3.3 VOUT, L=SC2511
3.3 VOUT, L=IHLP16
3.0
1000
Input Voltage (V)
Load Current (mA)
3.5
2000
4.0
LOAD
3000
=1.0A, t
4.5
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R
4000
=t
5.0
F
=10s
-40C
+25C
+85C
IN
IN
5000
5.5