BD9673EFJ-E2 ROHM Electronics, BD9673EFJ-E2 Datasheet - Page 9

• Manufacturer Part Number: BD9673EFJ-E2
• Description: Specifications: Type: Step-Down (Buck) ; Output Type: Adjustable ; PWM Type: Current Mode ; Synchronous Rectifier: Yes ; Number of Outputs: 1 ; Voltage - Output: 1 V ~ 29.4 V ; Current - Output: 1.5A ; Frequency - Switching: 300kHz ; Voltage - Input:
• Manufacturer: ROHM Electronics

●Example of Reference Application Circuit (Input 24V, Output 5.0V/ 1A)
●Reference Application Data (Example of Reference Application Circuit)
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BD9673EFJ
5V/1A
© 2012 ROHM Co., Ltd. All rights reserved.
Fig.22 Electric Power Conversion Rate
100
90
80
70
60
50
40
30
20
10
0
VOUT
0
47µF/15
GRM32EB31C476KE15 (murata)
Fig.25 Load Response Characteristics
LOAD CURRENT[mA]
500
VCC=42V
Fig.27 startup Waveform
(Io=0A→1.5A)
VCC=36V
1000
VCC=24V
VCC=12V
R1
R2
VOUT：200mV/div (AC)
1500
IL：500mA/div (DC)
15µH CDRH105R
(SUMIDA)
RB056L-40 (ROHM)
120
k Ω
30
k Ω
Fig.23 Frequency Response
Characteristics(Io=0.5A）
C1
R3
Fig.21 Reference Application Circuit
EN：5V/div (DC)
LX：10V/div (DC
IL：0.5A/div (DC)
VOUT：2V./div (DC)
6800pF
10kΩ
9/18
Phase
Gain
GND
FB
VC
Fig.26 Load Response Characteristics
Lx
0.01µF
(Io=1.5A→0A)
Fig.28 Stop Waveform
SYNC
VCC
BST
EN
VOUT：200mV/div (AC)
IL：500mA/div (DC)
Fig.24 Frequency Response
Characteristics (Io=1.0A）
10uF/35V
GRM31EB3YA106KA12L
(murata)
Technical Note
2012.02 - Rev.C
Phase
Gain
EN：5V/div (DC)
LX：10V/div (DC
IL：0.5A/div (DC)
VOUT：2V./div (DC)
SYNC
EN
VCC 24V
ON/OFF
control