BD9673AEFJ Datasheet, PDF (10/23 Pages) Rohm – Flexible Step-down Switching Regulators with Built-in Power MOSFET

BD9673AEFJ
●Example of Reference Application Circuit (Input 24V, Output 5.0V)
0.01µF
5V/1.0A VOUT
47µF/15V
GRM32EB31C476KE15 (murata)
15µH CDRH105R
(SUMIDA)
RB056L-40 (ROHM)
Lx
GND
VCC
BST
VC
R1 120kΩ
C2
C1 6800pF
open
FB
R2 30kΩ
R3 10kΩ
EN
SYNC
Datasheet
VCC 24V
10µF/35V
GRM31EB3YA106KA12L
(murata)
EN ^ON/OFF
control
SYNC
Figure 23. Reference Application Circuit
●Reference Application Data (Example of Reference Application Circuit)
100
90
80
70
60
50
40
30
20
10
0
0
VCC=12V
VCC=24V
VCC=36V
VCC=42V
500
1000
1500
LOAD CURRENT[mA]
Figure 24. Electric Power
Conversion Rate
Phase
Gain
Figure 25. Frequency Response
Characteristics (Io=0.5A)
Phase
Gain
Figure 26. Frequency Response
Characteristics (Io=1.0A)
VOUT：200mV/div (AC)
IL：1A/div (DC)
VOUT：200mV/div (AC)
IL：1A/div (DC)
Figure 27. Load Response Characteristics
(Io=0A→1.5A)
Figure 28. Load Response Characteristics
(Io=1.5A→0A)
EN：5V/div (DC)
LX：10V/div (DC
IL：0.5A/div (DC)
VOUT：2V./div (DC)
EN：5V/div (DC)
LX：10V/div (DC
IL：0.5A/div (DC)
VOUT：2V./div (DC)
Figure 29. startup Waveform
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
10/20
Figure 30. Stop Waveform
TSZ02201-0Q1Q0AJ00190-1-2
28.JAN.2014 Rev.003