BD9E151NUX Datasheet, PDF (8/22 Pages) Rohm – 1ch Step-Down Switching Regulator

BD9E151NUX
Datasheet
Reference Characteristics of typical Application Circuits (VIN=12V, VOUT=5V IOUT=1A)
10uF/35V
GRM31CB3YA106KA12L(MURATA)
VIN
Cvcc2
EN
SS
CBST:0.1uF
BST
LX
47uF/16V
GRM32EB31C476KE15L (MURATA)
NRS6045T 15uH
(TAIYO YUDEN)
VOUT
Co1
VIN
GND
D1
RSX101VA-30(Rohm)
EN
VC
C1:10000pF
Ro:1kΩ
SS
FB
R3:2.7kΩ
R4:12KΩ
Css:0.047uF
R5:3KΩ
(Back side PAD is recommended
connecting to GND)
Figure 16. Typical ApplicationCircuit (VOU=5V)
100
90
80
70
60
50
40
30
20
10
0
1
VIN=8V
VIN=12V
VIN=25V
10
100
1000
output current Io[mA]
10000
Figure 17. Efficiency - Output Current
100
90
80
70
60
50
40
30
20
10
0
0
Iout=1A
Iout=100mA
Iout=10mA
5
10
15
20
25
30
output current Io[mA]
Figure 18. Efficiency - Input Voltage
EN [10V/div]
Lx [10V/div]
Vout [2V/div]
Iout [0.2A/div]
10ms/div
Iout [1A/div]
Overshoot=134mV
Vout [0.1V/div]
Undershoot=152mV
10ms/div
Figure 19. Start-up Characteristics
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TSZ22111・15・001
8/19
Figure 20. Load Response
TSZ02210-0Q3Q0AZ00160-1-2
2013.07.17 Rev.001