BD8303MUV-E2 ROHM

Datasheet 2.7V to 14V Synchronous Buck-Boo st Controller BD8303MUV General Description Key Specifications BD8303MUV is ROHMs high efficiency step-up/step-down Input Voltage Range: +2.7V to +14V switching regulator IC. It produces output of 3.3V / 5V from Reference Volatage Accuracy : 1.25% 1 cell of lithium battery, 4 batteries, or 2 cells of Li batteries Standby Current: 0A(Typ) with just one inductor. Operating Temperature Range: -25C to +85C 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 Package W(Typ) x D(Typ) x H(Max) regulators. 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 VQFN016V3030 General Portable Equipment 3.00mm x 3.00mm x 1.00mm DVC Single-Lens Reflex Cameras Portable DVDs Mobile PCs Typical Application Circuit V =4.0~14V, V 8.4V, I 100mA ~ 1500mA CC OUT OUT V = CC 4.0V 14V Insert a filter as required. 1F RB521CS-30 47F 0.1F RB521CS-30 RSS065N03 4.7H 0.1F V (set at 8.4 V) OUT (TDK SLF10165) RSS065N03 100k RT SW1 47F x 2 27k INV LG1 RSS065N03 4700pF FB PGND 3.9k RSS065N03 GND LG2 7.5k 200k 100pF 0.1F ON/OFF Product structureSilicon monolithic integrated circuit This product has no designed protection against radioactive rays www.rohm.com TSZ02201-0Q3Q0NZ00320-1-2 2014 ROHM Co., Ltd. All rights reserved. 1/23 TSZ2211114001 16.Feb.2015 Rev.002 VCC STB VREG BOOT2 HG2 BOOT1 SW2 HG1 BD8303MUV Pin Configuration Pin Descriptions Pin No. Pin Name Function TOP VIEW 1 RT Oscillation frequency set terminal 2 INV Error AMP input terminal 3 FB Error AMP output terminal 4 GND Ground terminal 5 STB ON/OFF terminal RT SW1 6 BOOT2 Output side high-side driver input terminal 7 HG2 Output side high-side FET gate drive terminal INV LG1 8 SW2 Output side coil connecting terminal PGND FB 9 LG2 Output side low-side FET gate drive terminal LG2 GND 10 PGND Driver part ground terminal 11 LG1 Input side low-side FET gate drive terminal 12 SW1 Input side coil connecting terminal 13 HG1 Input side high-side FET gate drive terminal 14 BOOT1 Input side high-side driver input terminal 15 REG 5V Internal regulator output terminal 16 VCC Power input terminal Block Diagram REG TIMING CONTROL TIMING CONTROL www.rohm.com TSZ02201-0Q3Q0NZ00320-1-2 2014 ROHM Co., Ltd. All rights reserved. 2/23 TSZ2211115001 16.Feb.2015 Rev.002 VCC STB REG BOOT2 BOOT1 HG2 HG1 SW2 REG