BD8303MUV_15 Datasheet, PDF (1/27 Pages) Rohm – Synchronous Buck-Boost Controller

Datasheet
2.7V to 14V
Synchronous Buck-Boost Controller
BD8303MUV
General Description
BD8303MUV is ROHM’s high efficiency step-up/step-down
switching regulator IC. It produces output of 3.3V / 5V from
1 cell of lithium battery, 4 batteries, or 2 cells of Li batteries
with just one inductor.
This IC uses an original step-up/step-down drive system
and provides a higher efficient power supply than
conventional SEPIC-system or H-bridge system switching
regulators.
Key Specifications
 Input Voltage Range:
 Reference Volatage Accuracy :
 Standby Current:
 Operating Temperature Range:
+2.7V to +14V
1.25%
0μA(Typ)
-25°C to +85°C
Package
W(Typ) x D(Typ) x H(Max)
Features
 Highly-Efficient Step-Up/Step-Down DC/DC
Converter Implemented with Just One Inductor
 Supports High-Current Applications with External
N-Channel FET
 Incorporates a Soft-Start Function
 Incorporates a Timer-Latch System with Short
Circuit Protection Function
Applications
General Portable Equipment
 DVC
 Single-Lens Reflex Cameras
 Portable DVDs
 Mobile PCs
VQFN016V3030
3.00mm x 3.00mm x 1.00mm
Typical Application Circuit
VCC=4.0~14V, VOUT＝8.4V, IOUT＝100mA ~ 1500mA
VCC =
4.0V – 14V
Insert a filter
as required.
0.1μF
27kΩ
100kΩ _RT
INV
4700pF _FB
7.5kΩ
100pF
3.9kΩ
GND
200kΩ
1μF
RB521CS-30
RB521CS-30
0.1μF
47μF
RSS065N03
4.7μH
(TDK SLF10165) RSS065N03
VOUT (set at 8.4 V)
SW1
LG1
PGND
LG2
RSS065N03
RSS065N03
47μF x 2
ON/OFF
0.1μF
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
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TSZ02201-0Q3Q0NZ00320-1-2
16.Feb.2015 Rev.002