BD9E303EFJ-LB Datasheet, PDF (5/31 Pages) Rohm – Over-Current Protection

BD9E303EFJ-LB
Datasheet
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^{(Note 1)}
VSW
Pd
-0.5 to VIN + 0.3
V
2.76 ^{(Note 1)}
W
Operating Junction Temperature Range
Tj
-40 to +150
C
Storage Temperature Range
Tstg
-55 to +150
C
(Note 1) HTSOP-J8:Derating in done 22mW/°C for operating Ta ≥ 25°C
(PCB size: 114.3 mm × 76.2 mm × 1.6 mm, copper foil area (on 2nd & 3rd layer and reverse side): 74.2 mm × 74.2 mm when mounted on 4-layer PCB)
Copper foil thickness: Front side and reverse side 70µm be used, 2nd & 3rd 35µm be used.
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 (Ta= -40°C to +85°C)
Parameter
Supply Voltage
Symbol
Min
VIN
7.0
Rating
Typ
-
Max
Unit
36
V
Output Current
IOUT
0
-
3
A
Output Voltage Range
VRANGE
1.0 ^{(Note 2)}
-
VIN × 0.8
V
(Note 2) Please use it in output voltage setting of which output pulse width does not become 200nsec (Typ) or less. See the page 18 for how to calculate the
resistance of the output voltage setting.
Electrical Characteristics (Unless otherwise specified V_IN=24V V_EN=3V Ta=25°C)
Parameter
Symbol
Min
Limit
Typ
Max
Unit
Conditions
Supply Current in Operating
IOPR
-
2.2
3.0
mA
VFB = 1.1V
No switching
Supply Current in Standby
ISTBY
-
0
10
µA VEN = 0V
Reference Voltage (TJ =25°C)
VFB
0.990 1.000 1.010
V
Reference Voltage (TJ =-40 to +150°C)
VFB
0.965 1.000 1.035
V
FB Input Current
IFB
-1
0
1
µA VFB = 1.1V
Switching frequency
FOSC
255
300
345
kHz
Maximum Duty ratio
Maxduty
90
95
99
%
High-side FET on-resistance
RONH
-
90
-
mΩ ISW = 100mA
Low-side FET on-resistance
RONL
-
80
-
mΩ ISW = 100mA
Over Current limit
ILIMIT
-
5.2
-
A
UVLO detection voltage
VUVLO
4.7
5.0
5.3
V VIN falling
UVLO hysteresis voltage
VUVLOHYS
1.2
1.4
1.6
V
EN high-level input voltage
VENH
2.5
-
VIN
V
EN low-level input voltage
VENL
0
-
0.8
V
EN Input current
IEN
Soft Start time
● VFB : FB Input Voltage. VEN : EN Input Voltage.
● Pd should not be exceeded.
TSS
2.1
4.2
8.4
µA VEN = 3V
1.25
2.50
5.00
msec
EN rising to
FB=0.85V
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TSZ02201-0J3J0AJ00650-1-2
13.Feb.2015 Rev.002