BD9C301FJ-LB Datasheet, PDF (4/22 Pages) Rohm – 4.5V to 18V Input, 3.0A Integrated MOSFET Single Synchronous Buck DC/DC Converter

BD9C301FJ-LB
Recommended Operating Conditions
Parameter
Symbol
Min
Supply Voltage
V_IN
4.5
Output Current
I_OUT
-
Output Voltage Setting Range
Operating Junction Temperature
Range
(Note1) V_IN×0.125 ≥ 0.8 [V]
V_RANGE
Tj
V_IN×0.125^{(Note 1)}
-40
Electrical Characteristics
(Ta = 25C, V_IN = 12 V, V_EN = 5 V unless otherwise specified)
Parameter
Symbol
Min
Circuit Current in Active
I_{Q_active}
-
Limits
Typ
1.5
Circuit Current in Standby
I_{Q_stby}
-
1.0
FB Pin Voltage
V_FB
0.792
0.800
FB Input Current
I_FB
-
0
Switching Frequency
f_OSC
450
500
High Side FET On Resistance
R_ONH
-
80
Low Side FET On Resistance
R_ONL
-
45
Power MOS Leakage Current
I_LSW
-
0
Current Limit
I_LIMIT
3.5
-
Minimum Duty Ratio
Min_duty
-
-
UVLO Threshold
V_UVLO
3.75
4.0
UVLO Hysteresis Voltage
V_UVLOHYS
-
0.2
EN High-Level Input Voltage
V_ENH
2.0
-
EN Low-Level Input Voltage
V_ENL
-
-
Soft Start Time
T_SS
0.5
1.0
(Note 1) V_FB :FB Pin Voltage, V_EN :EN Pin Voltage, I_SW :SW Pin Current
(Note 2) Current capability should not exceed Pd.
Rating
Typ
-
-
-
-
Unit
Max
18.0
V
3.0
A
V_IN×0.7
V
+125
°C
Unit
Max
Conditions
2.5
mA V_FB= 0.75V, V_EN= 5V
10.0
0.808
2
μA V_EN = 0V
V
FB-COMP Short
(Voltage follower)
μA
550
kHz
-
mΩ V_IN= 12V , I_SW = -1A
-
mΩ V_IN= 12V , I_SW = -1A
5
μA V_IN= 18V , V_SW = 18V
-
A
12.5
%
4.25
V Wake up V_IN Voltage
-
V
-
V
0.8
V
2.0 msec
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TSZ22111・15・001
4/19
TSZ02201-0J3J0AJ00540-1-2
21.Feb.2014 Rev.002