BD8314NUV_15 Datasheet, PDF (1/25 Pages) Rohm – Integrated 2.5A MOSFET 1ch Boost Converter

Datasheet
3.0V to 12V, Integrated 2.5A MOSFET 1ch
Boost Converter
BD8314NUV
General Description
BD8314NUV is a high-efficiency step-up switching
regulator with built-in power MOSFET that can output
8V or 10V from a 4-battery voltage supply such as
Li1cell, Li2cell, or a 5V fixed power supply line. The
built-in 80mΩ N-Channel FET switch is capable of
handling output current up to 2.5A (DC). This IC has a
flexible phase compensation system and a switching
frequency of 1.2MHz allowing the use of smaller
external output inductor and capacitor making the
construction of a compact power supply really easy.
Key Specifications
 Input Voltage Range:
 Output Voltage Range:
 Switching Frequency:
 Nch FET ON-Resistance:
 Standby Current:
 Operating Temperature Range:
3.0V to 12V
4.0V to 12V
1.2MHz(Typ)
80mΩ(Typ)
0μA (Typ)
-25°C to +85°C
Package
W (Typ) x D (Typ) x H (Max)
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)
 Built-In Soft-Start Function.
 Built-In Timer Latch System for Short Circuit
Protection Function.
VSON010V3030
3.00mm x 3.00mm x 1.00mm
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
10V/500mA
RSX201L-30 (ROHM)
22μF
GRM32EB31C226KE16 (Murata)
200kΩ
22kΩ
10pF
10kΩ
ON/OFF
100kΩ
6 ^PGND
7 ^PGND
8 ^STB
9 INV
10 ^SWOUT
LLXx 5
LLXx ₄
VREG 3
VCC ₂
GND 1
4.7μH
DE3518E(TOKO)
3.0 to10V
10μF
GRM31CB31E106KA75L(Murata)
1μF
GRM188B11A105KA61(Murata)
1μF
GRM21BB11C105KA01(Murata)
3.0 to 10V
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
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© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
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TSZ02201-0Q3Q0NZ00380-1-2
17.Feb.2015 Rev.002