FAN5362 Fairchild Semiconductor, FAN5362 Datasheet - Page 5

• Manufacturer Part Number: FAN5362
• Description: The FAN5362 is a 500mA or 750mA, step-down, switching voltage regulator that delivers a fixed output voltage from an input voltage supply of 2
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FAN5362 • Rev. 1.0.4
Typical Characteristics
Unless otherwise noted, V
Figure 5. Efficiency vs. Load Current and Input Supply
100%
98%
96%
94%
92%
90%
88%
86%
84%
82%
80%
90
80
70
60
50
40
30
20
10
0
0
1
500
450
400
350
300
250
200
150
100
50
0
Figure 9. PFM / PWM Boundaries
3
3.2VIN_Auto
3.6VIN_AUTO
100
d.c
%
.
100
Hysteresis
3.5
Figure 7. Ripple
I
LOAD
10
IN
200
Load current (mA)
=V
Always PFM
Always PWM
Input Voltage(V)
Output Current (mA)
EN
4
=3.6V,V
300
4.5
MODE
100
=0 (AUTO), V
400
VIN = 3.2, Mode=0
VIN = 3.6, Mode=0
VIN = 4.2, Mode=0
VIN = 3.2, Mode=1
VIN = 3.6, Mode=1
VIN = 4.2, Mode=1
5
500
1000
5.5
OUT
=2.9V, C
5
Figure 8. Effect of t
2.910
2.905
2.900
2.895
2.890
2.885
3500
3000
2500
2000
1500
1000
500
OUT
0
1300
1200
1100
1000
900
800
700
600
0
=10µF, and T
-
2.5
Figure 10. Peak Inductor Current
50
Figure 6. Load Regulation
100
Auto 3.6VIN
Auto 3.2VIN
3.0
100
150
A
I
LOAD
OFF(MIN)
=25°C.
Frequency
3.5
200
Load Current(mA)
Input Voltage (V)
200
Output Current (mA)
250
on Reducing Switching
4.0
300
300
4.5
350
3.2VIN_AUTO
3.6VIN_AUTO
3.6VIN_FPWM
3.2VIN_FPWM
www.fairchildsemi.com
400
5.0
400
‐40C
+25C
+85C
450
5.5
500
500