BD8311NUV Datasheet, PDF (1/16 Pages) Rohm – High-efficiency Step-up Switching Regulator with Built-in Power MOSFET

Single-chip Type with Built-in FET Switching Regulator Series
High-efficiency Step-up
Switching Regulator
with Built-in Power MOSFET
BD8311NUV
No.09027EBT03
●Description
ROHM’s High-efficiency Step-up Switching Regulator Built-in Power MOSFET BD8311NUV generates step-up output
including 8 V or 10 V from 4 batteries, batteries such as Li2cell etc. or a 5 V fixed power supply line.
This IC allows easy production of small and a wide range of output current, and is equipped with an external coil/capacitor
downsized by high frequency operation of 1.2 MHz, built-in 2.5 A rated 80 mΩ Nch FET SW, and flexible phase compensation
system on board.
●Features
1) Incorporates Nch FET capable of withstanding 2.5 A/14 V.
2) Incorporates phase compensation device between input and output of ERROR AMP.
3) Small coils and capacitors to be used by high frequency operation of 1.2 MHz
4) Input voltage 3.5 V – 11 V
5) Output current 600 mA (3.5 V – 10 V) at 10 V
800 mA (3.5 V – 8 V) at 8 V
6) Incorporates soft-start function.
7) Incorporates timer latch system short protecting function.
8) As small as 3 mm², SON 10-pin package VSON010V3030
●Application
General portable equipment like DSC/DVC powered by 4 dry batteries or Li2cell
●Operating Conditions (Ta = 25°C)
Parameter
Power supply voltage
Output voltage
Symbol
VCC
VOUT
Voltage range
Unit
3.5 to 11
V
4.0 to 11
V
●Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Maximum applied power voltage
VCC, LX
14
V
Maximum input voltage
SWOUT, INV
14
V
Maximum input current
Iinmax
2.5
A
Power dissipation
Pd
700
mW
Operating temperature range
Topr
-25 to +85
°C
Storage temperature range
Tstg
-55 to +150
°C
Junction temperature
Tjmax
+150
°C
*1 When used at Ta = 25°C or more installed on a 74.2 × 74.2 × 1.6^t mm board, the rating is reduced by 5.6 mW/°C.
* These specifications are subject to change without advance notice for modifications and other reasons.
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/14
2009.04 - Rev.B