Datasheet 3.0V to 12V, Integrated 2.5A MOSFET 1ch Boost Converter BD8314NUV General Description Key Specifications BD8314NUV is a high-efficiency step-up switching Input Voltage Range: 3.0V to 12V regulator with built-in power MOSFET that can output Output Voltage Range: 4.0V to 12V 8V or 10V from a 4-battery voltage supply such as Switching Frequency: 1.2MHz(Typ) Li1cell, Li2cell, or a 5V fixed power supply line. The Nch FET ON-Resistance: 80m(Typ) built-in 80m N-Channel FET switch is capable of Standby Current: 0A (Typ) handling output current up to 2.5A (DC). This IC has a Operating Temperature Range: -25C to +85C flexible phase compensation system and a switching frequency of 1.2MHz allowing the use of smaller external output inductor and capacitor making the Package W (Typ) x D (Typ) x H (Max) construction of a compact power supply really easy. Features Built-in 2.5A (DC)/14V N-Channel FET Switch On-Chip Phase Compensation between Input and Output of ERROR AMP. Output Current: 600mA at 10V (3.5V to 10V Input) 600mA at 8V (3.0V to 8.0V Input) VSON010V3030 Built-In Soft-Start Function. 3.00mm x 3.00mm x 1.00mm Built-In Timer Latch System for Short Circuit Protection Function. Applications Portable Equipment like DSC/DVC Powered by 4 Dry Batteries or Li2cell Typical Application Circuit Input: 3.0V to 10V, Output: 10V / 500 mA RSX201L-30 (ROHM) 10V/500mA 22F GRM32EB31C226KE16 (Murata) 4.7H DE3518E(TOKO) PGND LXLx 5 6 3.0 to10V LXLx PGND 10pF 4 7 10F GRM31CB31E106KA75L(Murata) 1F GRM188B11A105KA61(Murata) STB VREG 3 ON/OFF 8 200k 10k VCC INV 2 9 100k 1F GRM21BB11C105KA01(Murata) 3.0 to 10V 22k SWOUT GND 1 10 Figure 1. Typical Application Circuit Product structureSilicon monolithic integrated circuit This product has no designed protection against radioactive rays .w ww.rohm.com TSZ02201-0Q3Q0NZ00380-1-2 2014 ROHM Co., Ltd. All rights reserved. 1/21 TSZ2211114001 17.Feb.2015 Rev.002 BD8314NUV Pin Configuration (TOP VIEW) SWOUT GND INV VCC STB VREG PGND LX LX PGND Figure 2. Pin Configuration Pin Description Pin No. Pin Name Function 1 GND Ground pin 2 VCC Supply voltage input pin 3 VREG 5V output terminal of regulator for internal circuit 4 , 5 LX Power switch terminal for coil 6 , 7 PGND Power transistor ground pin 8 STB ON/OFF terminal 9 INV ERROR AMP input pin 10 SWOUT STBSW for split resistance Block Diagram LX Figure 3. Block Diagram www.rohm.com TSZ02201-0Q3Q0NZ00380-1-2 2014 ROHM Co., Ltd. All rights reserved. 2/21 TSZ2211115001 17.Feb.2015 Rev.002