BD9134MUV_14 Datasheet, PDF (3/25 Pages) Rohm – Synchronous Buck Converter with Integrated FET

BD9134MUV
Absolute Maximum Ratings (Ta=25°C)
Parameter
Symbol
Limit
Unit
VCC Voltage
PVCC Voltage
VCC
-0.3 to +7 ^{(Note 1)}
V
PVCC
-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
1.21 ^{(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, occupied area by copper foil : 10.29mm² , in each layers
(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. 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.
Recommended Operating Conditions (Ta=-40°C to +105°C)
Parameter
Symbol
Min
Limit
Unit
Typ
Max
Power Supply Voltage
VCC
4.5
5
PVCC
4.5
5
5.5
V
5.5
V
EN Voltage
VEN
0
-
5.5
V
Output Current
(Note 6) Pd should not be exceeded.
ISW
-
-
3.0^{(Note 6)}
A
Electrical Characteristics (Ta=25°C VCC=PVCC=5V, VEN=VCC, unless otherwise specified.)
Parameter
Limit
Symbol
Unit
Min
Typ
Max
Standby Current
ISTB
-
0
10
μA
Active Current
ICC
-
250
500
μA
EN Low Voltage
VENL
-
GND
0.8
V
EN High Voltage
VENH
2.0
VCC
-
V
EN Input Current
IEN
-
1
10
μA
Oscillation Frequency
fOSC
0.8
1
1.2
MHz
High Side FET ON-Resistance
RONH
-
82
115
mΩ
Low Side FET ON-Resistance
RONL
-
70
98
mΩ
OUTPUT Voltage
VOUT
3.25
3.3
3.35
V
ITH SInk Current
ITHSI
10
18
-
μA
ITH Source Current
ITHSO
10
18
-
μA
UVLO Threshold Voltage
VUVLO1
3.6
3.8
4.0
V
UVLO Release Voltage
VUVLO2
3.65
3.9
4.2
V
Soft-Start Time
tSS
2.5
5
10
ms
Timer Latch Time
tLATCH
0.5
1
2
ms
Output Short Circuit Threshold Voltage
VSCP
-
1.65
2.4
V
Conditions
EN=GND
Standby mode
Active mode
VEN=5V
PVCC=5V
PVCC=5V
VOUT=4.1V
VOUT=2.5V
VCC=5V to 0V
VCC=0V to 5V
VOUT =3.3V to 0V
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03.Oct.2014 Rev.002