BD9D321EFJ Datasheet, PDF (4/28 Pages) Rohm – 4.5V to 18V Input, 3.0A Integrated MOSFET 1ch Synchronous Buck DC/DC Converter

BD9D321EFJ
Datasheet
Absolute Maximum Ratings (Ta = 25C)
Parameter
Symbol
Rating
Unit
Input Voltage ^{(Note 1)}
VIN
20
V
BOOT Voltage ^{(Note 1)}
VBOOT
27
V
BOOT-SW Voltage ^{(Note 1)}
VBOOT-VSW
7
V
Output Feedback Voltage
SW Voltage ^{(Note 1)}
VREG Voltage ^{(Note 1)}
SS Voltage ^{(Note 1)}
Logic Input Voltage ^{(Note 1)}
Power dissipation ^{(Note 2)}
VFB
VSW
VREG
VSS
VEN
Pd
VREG
V
20
V
7
V
7
V
20
V
3.75
W
Operating Temperature Range
Topr
-40 to +85
°C
Storage Temperature Range
Tstg
-55 to +150
°C
Junction Temperature
Tjmax
+150
°C
(Note 1) No need to exceed Pd.
(Note 2) Derating in done 30.08 mW/°C for operating above Ta ≥ 25°C (Mount on 4-layer 70.0mm×70.0mm×1.6mm board)
Caution1: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit
between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over
the absolute maximum ratings.
Caution2: The operating temperature range is intended to guarantee functional operation and does not guarantee the life of the LSI within this range. The life of
the LSI is subject to derating depending on usage environment such as the voltage applied, ambient temperature and humidity. Consider derating in the design
of equipment and devices.
Recommended Operating Conditions
Parameter
Symbol
Min
Input voltage
VIN
4.5
BOOT voltage
VBOOT
4.5
SW Voltage
VSW
-0.7
BOOT-SW voltage
VBOOT-VSW
4.5
Logic Input Voltage
VEN
0
Output Current
IOUT
-
Output Voltage Range
VRANGE
0.765 ^{(Note 3)}
(Note 3) Please use under the condition of VOUT ≥ VIN×0.07 [V].
(Note 4) Please use under the condition of VOUT ≤ VIN×0.65 [V].
(Refer to the page 17 for how to calculate the output voltage setting.)
Limit
Typ
12
-
-
-
-
-
-
Unit
Max
18
V
24
V
+18
V
5.5
V
18
V
3
A
7 ^{(Note 4)}
V
www.rohm.co.jp
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111•15•001
4/25
TSZ02201-0J3J0AC00490-1-2
07.Aug.2013 Rev.001