BD9D321EFJ Datasheet, PDF (7/28 Pages) Rohm – 4.5V to 18V Input, 3.0A Integrated MOSFET 1ch Synchronous Buck DC/DC Converter

BD9D321EFJ
Typical Performance Curves (Continued)
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
0
IOUT=1A
IOUT=10mA
5
10
15
20
VIN[V]
Figure 8. Output Voltage vs Input Voltage
Datasheet
100
90
80
70
60
50
40
30
20
10
0
0.001
VOUT =7.0V
VOUT =5.0V
VOUT =3.3V
VOUT =1.8V
VOUT =1.05V
VIN=12V
0.01
0.1
1
10
IOUT [A]
Figure 9. Efficiency vs Output Current
EN 5V/div
VREG 5V/div
SW 10V/div
VOUT 1V/div
500µsec/div
Figure 10. Start-up Waveform（EN=0V→5V）
(VIN=12V, VOUT=1.8V, IOUT=3A, Css=3300pF)
VIN 10V/div
VREG 5V/div
SW 10V/div
VOUT 1V/div
500µsec/div
Figure 11. Start-up Waveform（VIN=EN）
(VIN=12V, VOUT=1.8V, IOUT=3A, Css=3300pF)
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TSZ22111•15•001
7/25
TSZ02201-0J3J0AC00490-1-2
07.Aug.2013 Rev.001