Product Highlight

Distribution Spotlight
Innovations Embedded
Buck-Boost DC/DC Converters (Controller)
Optimized for multi-function, high performance battery-driven
portable devices of all types, ROHM’s DC/DC converters and
controllers (BD8301MUV/BD8303MUV) feature a wide input
voltage range and automatic step-up/-down operation for
reduced power consumption. High output efficiency is
maintained across the entire input range. Only one coil is
used and fewer parts are required than conventional Sepic
systems contributing to smaller power supply configurations.
Applications
Key Features
• Mobile phones
• Digital cameras/camcorders
• Gaming equipment
• Portable audio players
• Communication equipment
• Portable GPS devices
• Handheld printers
• Navigation systems
• Digital photo frames
• Cordless phones
BD8301MUV (internal FET type)
• Configure a cross converter with just a single coil
• Wide input voltage range: 2.5V to 5.5V
• Broad range of output voltages: 2.8V to 5.5V
• Large current output: 1A
• High efficiency
• Compact VQFN020V4040 package
BD8303MUV (external large current FET type)
• Configure a cross converter with just a single coil
• Wide input voltage range: 2.7V to 14V
• Compatible with large current FETs up to 5A
• Compact VQFN016V3030 package
• Includes soft-start functionality
Pricing
Quantity per reel: 3,000 pieces
Price: $1.19 - $1.88
Samples available
General Boost/Buck Circuit (*SEPIC Method)
ROHM Simple and Smart Configuration
parallel power
terminal system
Inductor
Voltage
Capacitor
Step-down (Buck) Step-up (Boost)
Output
Voltage
3.3V
Automatic
Switching
DC/DC
Converter
Step-up
(Boost)
Operation
3.3V
Capacitor
Step-up/down Operation
Time
High efficiency not
possible with the
SEPIC system
84% max. efficiency
Additional Inductor,
capacitor and diode
required
Large mounting area
(Peripheral components: 2 inductors, 3 capacitors, 1 diode, 2 resistors)
*Single Encoded Primary Inductor Converter
more info:
click here
Resistor
Resistor
Inductor Capacitor
Battery Voltage
0
Inductor
Diode
Terminal layout
designed to minimize
wiring resistance
High efficiency: 96%
Eliminates the need
for an inductor,
capacitor and diode
Space saving
(Peripheral components: 1 inductor, 2 capacitors, 2 resistors)
visit us:
www.rohm.com