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