BD8305MUV Datasheet, PDF (1/16 Pages) Rohm – High-effciency Step-up/down Switching Regulators with Built-in Power MOSFET

Single-chip Type with Built-in FET Switching Regulator Series
High-efficiency Step-up/down
Switching Regulators
with Built-in Power MOSFET
BD8305MUV
No.10027EDT08
●Description
ROHM’s highly-efficient step-up/down switching regulator BD8305MUV produces step-up/down output including 3.3 V from
1 cell of lithium battery with just one coil.This IC adopts an original step-up/down drive system and creates a higher efficient
power supply than conventional Sepic-system or H-bridge system switching regulators.
●Features
1) Highly-efficient step-up/down DC/DC converter to be constructed just with one inductor.
2) Input voltage
2.5 V - 5.5 V
3) Output current
1 A at 3.3 V
800 mA at 5.0 V
4) Incorporates soft-start function.
5) Incorporates timer latch system short protecting function.
6) High heat radiation surface mounted package
VQFN020V4040
●Application
General portable equipment like portable audio or DSC/DVC
●Absolute Maximum Ratings
Parameter
Symbol
BD8305MUV
Unit
Maximum applied power voltage
Vcc,PVCC
7.0
V
Maximum input current
Iinmax
2.0
A
Maximum input voltage
Lx1
7.0
V
Lx2
7.0
V
Power dissipation
Pd
700
mW
Operating temperature range
Topr
-25 to +85
ºC
Storage temperature range
Tstg
-55 to +150
ºC
Junction temperature
Tjmax
150
ºC
*1 When installed on a 70.0 mm × 70.0 mm × 1.6 mm glass epoxy board. The rating is reduced by 5.6 mW/°C at Ta = 25°C or more.
●Operating Conditions (Ta = 25°C)
Parameter
Power supply voltage
Output voltage
Symbol
Vcc
OUT
Voltage range
Unit
2.5 to 5.5
V
2.8 to 5.2
V
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2010.05 - Rev.D