SP7656 EXAR [Exar Corporation], SP7656 Datasheet - Page 8

• Manufacturer Part Number: SP7656
• Description: 3A, 29V Non-Synchronous Buck Converter
• Manufacturer: EXAR [Exar Corporation]

100
Inductor Ripple
Current 2A/div
LX
Output Ripple
90
80
70
60
50
40
0.0
Figure 3- Efficiency, Natural convection
11/07/08 SP7656 PowerBlox
Figure 5- Output Ripple
Vout=3.3V, Ta= 25°C
at Vout=3.3V, Ta= 25°C
E ffic ie n c y v s Io u t (3.3Vo u t)
1.0
V in= 12V
V in= 24V
Io u t (A)
2.0
3.0
Figure 2- Typical application circuit
4.0
8
100
Figure 4- Efficiency Natural convection
95
90
85
80
75
70
65
60
0.0
Vin
Vout
at Vout=12V, Ta= 25°C,
Iout
2A/div
E ffic ie n c y v s Io u t (12Vo u t)
Vout=3.3V, Ta= 25°C
1.0
Figure 6- Start-up
Application Information
V in= 14V
V in= 24V
V in= 29V
Copyright 2008 EXAR Corporation
Io u t (A)
2.0
3.0
4.0