BD9673EFJ-E2 ROHM Electronics, BD9673EFJ-E2 Datasheet - Page 2

• 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

●Electrical Characteristics (Unless otherwise specified, Ta=25℃,VCC=24V, Vo=5V, EN=3V)
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BD9673EFJ
© 2012 ROHM Co., Ltd. All rights reserved.
【Circuit Current】
【Under Voltage Lock Out (UVLO)】
【Oscillator】
【Error Amp】
【Current Sense Amp】
【Output】
【CTL】
【SYNC】
Stand-by current of VCC
Circuit current of VCC
Detect Voltage
Hysteresis width
Oscillating frequency
Max Duty Cycle
FB threshold voltage
Input bias current
Error amplifier DC gain
Trans Conductance
Soft Start Time
VC to switch current transconductance
Lx NMOS ON resistance
Lx pre-charge NMOS ON resistance
Over Current Detect Current
EN Pin Control voltage
EN Pin input current
SYNC Pin Control voltage
SYNC Pin input current
SYNC falling edge to LX rising edge delay
◎ Not designed to withstand radiation.
Parameter
ON
OFF
High
Low
VENOFF
VSYNCH
VSYNCL
VENON
Symbol
Vuvhy
Dmax
tdelay
RonH
RonL
Tsoft
REN
REN
VFB
A
fosc
Iocp
Vuv
G
G
IFB
Icc
Ist
VEA
EA
CS
0.990
2/18
Min.
270
-1.0
700
110
-0.3
-0.3
200
6.1
2.0
2.7
2.0
85
－
－
－
－
－
7
5
2
6
Limits
1.000
7000
Typ.
200
300
220
200
400
6.4
3.3
5.5
91
10
10
10
12
－
－
－
－
0
1
0
70000
1.010
Max.
VCC
300
330
440
340
600
6.7
1.0
0.8
5.5
0.8
10
97
13
20
17
11
24
－
2
µA/V
Unit
kHz
mA
mV
V/V
A/V
mΩ
µA
µA
ms
µA
µA
ns
%
Ω
V
V
A
V
V
V
V
VEN=0V
FB=1.2V
VFB=0V
IVC=±10µA,
VC=1.5V
VEN=3V
VSYNC=3V
Technical Note
Conditions
2012.02 - Rev.C