BD91361MUV_14 Datasheet, PDF (3/27 Pages) Rohm – Synchronous Buck Converter with Integrated FET

BD91361MUV
Datasheet
Absolute Maximum Ratings (Ta=25°C)
Parameter
Symbol
Rating
Unit
VCC Voltage
PVCC Voltage
VCC
PVCC
-0.3 to +7 ^{(Note 1)}
V
-0.3 to +7 ^{(Note 1)}
V
BST Voltage
VBST
-0.3 to +13
V
BST_SW Voltage
VBST-SW
-0.3 to +7
V
EN Voltage
VEN
-0.3 to +7
V
SW,ITH Voltage
Power Dissipation 1
VSW, VITH
-0.3 to +7
V
Pd1
0.34 ^{(Note 2)}
W
Power Dissipation 2
Pd2
0.70 ^{(Note 3)}
W
Power Dissipation 3
Pd3
2.21 ^{(Note 4)}
W
Power Dissipation 4
Pd4
3.56 ^{(Note 5)}
W
Operating Temperature Range
Topr
-40 to +105
°C
Storage Temperature Range
Tstg
-55 to +150
°C
Maximum Junction Temperature
Tjmax
+150
°C
(Note 1) Pd should not be exceeded.
(Note 2) IC only
(Note 3) Mounted on a 1-layer 74.2mmx74.2mmx1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm²
(Note 4) Mounted on a 4-layer 74.2mmx74.2mmx1.6mm glass-epoxy board, 1st and 4th copper foil area : 10.29mm², 2nd and 3rd copper foil area : 5505mm²
(Note 5) Mounted on a 4-layer 74.2mmx74.2mmx1.6mm glass-epoxy board, occupied area by copper foil : 5505mm², in each layers
Caution: Operating the IC over the absolute maximum ratings may damage the IC. In addition, it is impossible to predict all destructive situations such as
short-circuit modes, open circuit modes, etc. Therefore, it is important to consider circuit protection measures, like adding a fuse, in case the IC is operated in
a special mode exceeding the absolute maximum ratings.
Recommended Operating Conditions (Ta=-40°C to +105°C)
Parameter
Symbol
Min
Rating
Typ
Max
Unit
Power Supply Voltage
VCC
PVCC
2.7
3.3
2.7
3.3
5.5
V
5.5
V
EN Voltage
VEN
0
-
5.5
V
Logic Input Voltage
VVID<1:0>
0
-
5.5
V
Output Voltage Setting Range
VOUT
0.8
-
3.3 ^{(Note 6)} V
SW Average Output Current
ISW
-
-
4.0 ^{(Note 7)} A
(Note 6) In case the output voltage is set to 1.6V or more, VCCMin = VOUT+1.2V.
(Note 7) Pd should not be exceeded.
Electrical Characteristics
(Unless otherwise specified, Ta=25°C VCC=PVCC=3.3V, VEN=VCC, VID<1>=VID<0>=0V, R1=10kΩ, R2=5kΩ)
Parameter
Symbol
Min
Limit
Typ Max
Unit
Conditions
Standby Current
ISTB
-
0
10
µA EN=GND
Active Current
ICC
-
250
500
µA
EN Low Voltage
VENL
-
GND 0.8
V Standby mode
EN High Voltage
VENH
2.0
VCC
-
V Active mode
EN Input Current
IEN
-
3
10
µA VEN=3.3V
VID Low Voltage
VVIDL
-
GND 0.8
VID High Voltage
VVIDH
2.0
VCC
-
VID Input Current
IVID
-
3
10
VVID=3V
Oscillation Frequency
fOSC
0.8
1
1.2 MHz
High Side FET ON-Resistance
RONH
-
60
90
mΩ PVCC=3.3V
Low Side FET ON-Resistance
RONL
-
55
85
mΩ PVCC=3.3V
ADJ Voltage
VADJ
0.788 0.800 0.812
V
VVID<1:0>=(0,0)
ITH Sink Current
ITHSI
10
18
-
µA VADJ=1V
ITH Source Current
ITHSO
10
18
-
µA VADJ=0.6V
UVLO Threshold Voltage
VUVLO1
2.400 2.500 2.600
V VCC=3.3V to 0V
UVLO Release Voltage
VUVLO2
2.425 2.550 2.700
V VCC=0V to 3.3V
Soft-Start Time
tSS
0.5
1
2
ms
Timer Latch Time
tLATCH
0.5
1
2
ms
Output Short Circuit Threshold Voltage
VSCP
-
0.40 0.56
V VADJ =0.8V to 0V
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06.Oct.2014 Rev.002