BD9E100FJ-LB Datasheet, PDF (5/33 Pages) Rohm – 7.0V to 36V Input, 1.0 A Integrated MOSFET Single Synchronous Buck DC/DC Converter

BD9E100FJ-LB
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Symbol
Rating
Unit
Supply Voltage
VIN
-0.3 to +40
V
EN Input Voltage
VEN
-0.3 to +40
V
Voltage from GND to BOOT
Voltage from SW to BOOT
VBOOT
-0.3 to +45
V
⊿VBOOT
-0.3 to +7
V
FB Input Voltage
VFB
-0.3 to +7
V
COMP Input Voltage
VCOMP
-0.3 to +7
V
SW Input Voltage
Allowable Power Dissipation
VSW
Pd
-0.5 to VIN + 0.3
V
0.67 ^{(Note 1)}
W
Operating Junction Temperature Range
Tj
-40 to +150
C
Storage Temperature Range
Tstg
-55 to +150
C
(Note 1) Derating in done 5.36 mW/°C for operating above Ta≧25°C (Mount on 1-layer 70.0mm x 70.0mm x 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: Reliability is decreased at junction temperature greater than 125C.
Recommended Operating Conditions
Parameter
Rating
Symbol
Min
Typ
Max
Unit
Supply Voltage
VIN
7.0
-
36
V
Output Current
IOUT
0
-
1.0
A
Output Voltage Range
VRANGE
1.0^{(Note 2)}
-
VIN × 0.7
V
(Note 2) Please use it in I/O voltage setting of which output pulse width does not become 150nsec (Typ) or less. See the page 22 for how to calculate the
resistance of the output voltage setting.
Electrical Characteristics (Unless otherwise specified VIN=24V VEN=3V Ta=25°C)
Parameter
Symbol
Min
Limit
Typ
Unit
Max
Supply Current in Operating
IOPR
-
1.5
2.5
mA
Supply Current in Standby
ISTBY
-
0
10
µA
Conditions
VFB = 1.1V
No switching
VEN = 0V
Reference Voltage
VFB
0.98
1.00
1.02
V
FB Input Current
IFB
-1
0
1
µA VFB = 0V
Switching frequency
FOSC
0.85
1.00
1.15 MHz
Maximum Duty ratio
Maxduty
85
90
95
%
High-side FET on-resistance
RONH
-
300
-
mΩ ISW = 100mA
Low-side FET on-resistance
RONL
-
300
-
mΩ ISW = 100mA
Over Current limit
ILIMIT
-
3.0
-
A
UVLO detection voltage
VUVLO
6.1
6.4
6.7
V VIN falling
UVLO hysteresis voltage
VUVLOHYS
100
200
300
mV
EN high-level input voltage
VENH
2.5
-
VIN
V
EN low-level input voltage
VENL
-
-
0.8
V
EN Input current
IEN
Soft Start time
TSS
● VFB : FB Input Voltage. VEN : EN Input Voltage.
● Pd should not be exceeded.
2.1
4.2
8.4
µA VEN = 3V
1.5
3.0
6.0
msec
EN rising to
FB=0.85V
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TSZ02201-0J3J0AJ00370-1-2
21.Feb.2014 Rev.002