BD9D321EFJ Datasheet, PDF (5/28 Pages) Rohm – 4.5V to 18V Input, 3.0A Integrated MOSFET 1ch Synchronous Buck DC/DC Converter

BD9D321EFJ
Electrical Characteristics
(Ta = 25°C, VIN = 12V, VEN = 3V unless otherwise specified)
Parameter
<VIN Pin Block >
Standby Circuit Current
Symbol
Min
I_STB
-
Operating Circuit Current
I_VIN
-
<Enable Block >
EN Low Voltage
EN High Voltage
EN Bias Current
<5V Linear Regulator Block >
VREG Standby Voltage
VREG Output Voltage
Maximum Current
< Under-Voltage Lock-Out Block >
UVLO Threshold Voltage
UVLO Hysteresis Voltage
< Reference Voltage Block >
FB Threshold Voltage
FB Input Current
SS Charge Current
SS Discharge Current
< On Time Control Block >
On Time
V_ENL
-
V_ENH
2.2
I_EN
-
V_{VREG_STB}
-
V_VREG
5
I_REG
-
V_{VREG_UVLO}
dV_{VREG_UVLO}
3.4
200
V_REF
I_FB
I_SSC
I_SSD
0.753
-
1.4
0.1
Ton
-
Minimum Off Time
Toffmin
100
<SW Block >
High Side FET ON Resistance
R_ONH
-
Low Side FET ON Resistance
R_ONL
-
< Over Current Protection Block >
Over Current Protection Current Limit
Iocp
-
(Note 5) No tested on outgoing inspection.
Limit
Typ
2
0.7
-
-
1.5
-
5.25
10
3.8
300
0.765
-
2.0
0.2
215
200
100
70
5
Max
15
2
0.3
VIN
5
0.1
5.5
-
4.2
400
0.777
1
2.6
-
-
-
200
140
-
Datasheet
Unit
Conditions
µA VEN=GND
mA
VEN=3V, IOUT=0mA
when no switching
V
V
µA VEN=3V
V
VEN=GND
V
mA
V
VREG: Sweep up
mV VREG: Sweep down
V
VIN=12V, VOUT=1.8V
PWM Mode Operation
µA
µA
mA
VREG=5.25V,
VSS=0.5V
nsec
nsec
VIN=12V,
VOUT=1.8V
mΩ
mΩ
A
(Note 5)
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TSZ22111•15•001
5/25
TSZ02201-0J3J0AC00490-1-2
07.Aug.2013 Rev.001