BD9E300EFJ-LB BD9E300UEFJ-LB
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Symbol
Rating
Unit
Supply Voltage
VIN
VEN
-0.3 to +40
-0.3 to +40
-0.3 to +45
-0.3 to +7
V
V
EN Input Voltage
Voltage from GND to BOOT
Voltage from SW to BOOT
FB Input Voltage
VBOOT
⊿VBOOT
VFB
V
V
-0.3 to +7
V
COMP Input Voltage
VCOMP
VSW
-0.3 to +7
V
SW Input Voltage
-0.5 to VIN + 0.3
3.75 (Note 1)
-40 to +150
-55 to +150
V
Allowable Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
Pd
W
C
C
Tj
Tstg
(Note 1) Derating in done 30.08 mW/°C for operating above Ta≧25°C (Mount on 4-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 125C.
Recommended Operating Conditions
Rating
Typ
Parameter
Supply Voltage
Symbol
Unit
Min
7.0
Max
36
VIN
IOUT
-
V
A
V
Output Current
0
-
-
2.5
Output Voltage Range
VRANGE
1.0(Note 2)
VIN × 0.7
(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)
Limit
Typ
Parameter
Symbol
Unit
mA
Conditions
VFB = 1.1V
Min
-
Max
2.5
Supply Current in Operating
IOPR
1.5
No switching
Supply Current in Standby
Reference Voltage
ISTBY
VFB
-
0.98
-1
0
1.00
0
10
1.02
1
µA
V
VEN = 0V
FB Input Current
IFB
µA
MHz
%
VFB = 0V
Switching frequency
FOSC
Maxduty
RONH
RONL
ILIMIT
VUVLO
VUVLOHYS
VENH
VENL
0.85
85
-
1.00
90
1.15
95
-
Maximum Duty ratio
High-side FET on-resistance
Low-side FET on-resistance
Over Current limit
170
140
5.0
6.4
200
-
mΩ
mΩ
A
ISW = 100mA
ISW = 100mA
-
-
-
-
UVLO detection voltage
UVLO hysteresis voltage
EN high-level input voltage
EN low-level input voltage
EN Input current
6.1
100
2.5
-
6.7
300
VIN
0.8
8.4
V
VIN falling
mV
V
-
V
IEN
2.1
4.2
µA
VEN = 3V
EN rising to
FB=0.85V
Soft Start time
TSS
1.5
3.0
6.0
msec
●
●
VFB : FB Input Voltage. VEN : EN Input Voltage.
Pd should not be exceeded.
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