BD9355MWV-E2

Regulators ICs for Digital Cameras and Camcorders System Switching Regulator IC with Built-in FET (5V) No.11036EAT15 BD9355MWV ●Description 7 Channel Switching Regulator Controller for Digital Camera that contains an internal FET. Built in the function that dim a white LED for back light with a diming set signal from a microcomputer. ●Features 1) 1.5V minimum input operating 2) Supplies power for the internal circuit by step-up converter(CH1). 3) CH1step-up converter, CH2 cross converter, CH3,4 step-down converter, CH5 inverting converter for CCD, CH6 boost converter for CCD, CH7 boost converter for LED 4) All channels contain internal Power MOSFET and compensation. Built-In Over Voltage Protection (OVP) for CH1,2,7 5) Operating frequency 2.0MHz(CH3,4), 1MHz(CH1,2,5～7) 6) Contains sequence control circuit for CH1～4. It is possible to select sequence CH1⇒CH3⇒CH4⇒CH2 and CH1⇒CH4⇒CH3⇒CH2 by SEQ_CTL pin 7) Built-In discharge switch (CH2,3,4) and contains off sequence control circuit for CH1～4. CH1,3 turn off after CH2,4 output voltage discharged. 8) Built-In Short-circuit Protection (SCP) 9) CH1 have backgate control circuit CH6 have high side switches with soft start function. 10) Thermally enhanced UQFN036V5050 package(5mm□0.4mm pitch) ●Applications For Digital Camera ●Absolute maximum ratings (Ta=25℃) Parameter Symbol Ratings Unit HX2BAT,VCCOUT -0.3～7 V VHx1～4, 56 -0.3～7 V ( Hx56 - Lx5) Voltage -0.3～15 V VLx6 -0.3～22 V VLx7 -0.3～30 V IomaxHx1, Lx1 ±2.2 A IomaxHx2 ±1.5 A IomaxHx3 ±1.2 A IomaxHx4 ±1.0 A IomaxHx56 ±1.5 A IomaxHS6L +1.2 A IomaxLx7,8 ±1.0 A Pd 0.88 (*1) W Operating Temperature Topr -25～+85 ℃ Storage Temperature Tstg -55～+150 ℃ HX2BAT,VCCOUT +150 ℃ Maximum applied power Supply voltage Maximum applied input voltage Maximum Output current Power Dissipation Maximum applied power Supply voltage *1 Should be derated by 7.04mW/℃ at Ta=25℃ or more. When mounted on a glass epoxy PCB of 74.2mm×74.2 mm×1.6 mm www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 1/22 2011.03 - Rev.A Technical Note BD9355MWV ●Operating condition Ratings Parameter Symbol Unit Conditions Min. Typ. Max. VBAT 1.5 - 5.5 V CVREF 0.047 0.1 0.47 µF fpwm 20 - 100 kHz CH1 NMOS/PMOS drain current Idpl1 － － 2.1 A CH2 Hx2BAT input current Iin2 － － 1.4 A CH3 PMOS drain current Idpl3 － － 1.0 A CH4 PMOS drain current Idpl4 － － 0.5 A CH5 PMOS drain current Idpl5 － － 1.4 A CH6 HS6L input current Idpl6 － － 1.1 A Idnl6,7 － － 0.9 A CH1 4.5 － 5.4 V CH2 (※) － 5.4 V CH3 1.0 － 4.4 V CH4 1.0 － 4.4 V CH5 -9.5 － -1.5 V CH6 5.5 － 16 V ※Use with VBAT