Technical Note Large Current External FET Controller T ype Switching Regulators Dual-output Step-up, Negative Voltage, Step-down Switching Regulators (Controller type) BA9743AFV, BA9744FV, BA9741F, BA9741FS www.rohm.com 2011 ROHM ROHM Co., Co., Ltd. Ltd. All All rights rights reserved. reserved. (c) 2013 1/16 No.13028ECT10 No.11028EBT10 2013.03 -- Rev. Rev. B C 2011.04 BA9743AFV, BA9744FV, BA9741F/FS Technical Note www.rohm.com www.rohm.com (c) ROHM Co., Co., Ltd. Ltd. All All rights rights reserved. reserved. (c) 2011 2013 ROHM 2/16 2013.03 Rev.CB 2011.04- -Rev. BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2013 2011 ROHM ROHMCo., Co.,Ltd. Ltd.All Allrights rightsreserved. reserved. Technical Note 3/16 2013.03 -Rev. Rev.BC 2011.04 BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2013 2011 ROHM ROHMCo., Co.,Ltd. Ltd.All Allrights rightsreserved. reserved. Technical Note 4/16 2013.03 Rev. B C 2011.04 -Rev. BA9743AFV, BA9744FV, BA9741F/FS Technical Note www.rohm.com www.rohm.com (c) 2013 2011 ROHM ROHMCo., Co.,Ltd. Ltd.All Allrights rightsreserved. reserved. (c) 5/16 2011.04 --Rev. B 2013.03 C BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com www.rohm.com (c) (c) 2013 2011 ROHM ROHMCo., Co.,Ltd. Ltd.All Allrights rightsreserved. reserved. Technical Note 6/16 Rev. C B 2011.04- -Rev. 2013.03 BA9743AFV, BA9744FV, BA9741F/FS Technical Note www.rohm.com www.rohm.com 2011 ROHM ROHMCo., Co.,Ltd. Ltd.All Allrights rightsreserved. reserved. (c)(c)2013 7/16 2013.03 C 2011.04 --Rev. B BA9743AFV, BA9744FV, BA9741F/FS Technical Note VREF 16 Vcc CT RT 9 1 2 REFERENCE TRIANGLE VOLTAGE OSCILLATOR NON1 3 INV1 4 FB1 ErrAmp1 PMW COMP1 SCP COMP 5 7 OUT1 NON2 14 INV2 13 ErrAmp2 10 OUT2 VREF(BA9741F/FS, BA9743AFV) FB2 12 PMW COMP2 VREF VCC(BA9744FV) SCP 15 S R TIMER LATCH www.rohm.com www.rohm.com (c) 2013 2011 ROHM ROHMCo., Co.,Ltd. Ltd.All Allrights rightsreserved. reserved. (c) R UVLO 6 11 8 DT1 DT2 GND 8/16 2013.03 Rev. C B 2011.04--Rev. BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2013 2011 ROHM ROHMCo., Co.,Ltd. Ltd.All Allrights rightsreserved. reserved. Technical Note 9/16 2013.03 -Rev. Rev.BC 2011.04 BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2013 2011 ROHM ROHMCo., Co.,Ltd. Ltd.All Allrights rightsreserved. reserved. Technical Note 10/16 2013.03 Rev. BC 2011.04 --Rev. BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2013 2011 ROHM ROHMCo., Co.,Ltd. Ltd.All Allrights rightsreserved. reserved. Technical Note 11/16 2011.04 --Rev. 2013.03 Rev. B C BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com www.rohm.com (c) (c) 2013 2011 ROHM ROHMCo., Co.,Ltd. Ltd.All Allrights rightsreserved. reserved. Technical Note 12/16 2013.03 C 2011.04 --Rev. B BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com www.rohm.com 2013 ROHM (c) 2011 ROHM Co., Co., Ltd. Ltd. All All rights rights reserved. reserved. Technical Note 13/16 2013.03 Rev. B C 2011.04 --Rev. BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com www.rohm.com (c) (c) 2011 2013 ROHM Co., Ltd. All rights reserved. Technical Note 14/16 2013.03 C 2011.04 --Rev. B BA9743AFV, BA9744FV, BA9741F/FS Technical Note Heat dissipation characteristics www.rohm.com www.rohm.com (c) 2011 2013 ROHM Co., Ltd. All rights reserved. (c) 15/16 2013.03 Rev. C B 2011.04- -Rev. BA9743AFV, BA9744FV, BA9741F/FS Technical Note Ordering part number B A 9 Part No. 7 4 3 A F Part No. 9743A 9744 9741 V Package FV:SSOP-B16 FS:SSOP-A16 F:SOP16 - E 2 Packaging and forming specification E2: Embossed tape and reel SSOP-B16 <Tape and Reel information> 5.00.2 9 1 Tape Embossed carrier tape Quantity 2500pcs Direction of feed 0.3Min. 4.40.2 6.40.3 16 E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 8 1.150.1 0.150.1 0.10 0.1 0.65 1pin 0.220.1 Reel (Unit : mm) Direction of feed Order quantity needs to be multiple of the minimum quantity. SSOP-A16 <Tape and Reel information> 6.6 0.2 (MAX 6.95 include BURR) Tape Embossed carrier tape Quantity 2500pcs 9 Direction of feed 0.3MIN 4.40.2 6.20.3 16 15 14 13 12 11 10 1 2 3 4 5 6 7 E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 8 0.11 1.50.1 0.15 0.1 0.1 0.8 0.36 0.1 1pin Reel (Unit : mm) Direction of feed Order quantity needs to be multiple of the minimum quantity. SOP16 <Tape and Reel information> 10 0.2 (MAX 10.35 include BURR) 9 Tape Embossed carrier tape Quantity 2500pcs Direction of feed E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 0.3MIN 4.40.2 6.20.3 16 1 8 0.11 1.50.1 0.15 0.1 1.27 0.4 0.1 0.1 1pin Reel (Unit : mm) www.rohm.com www.rohm.com (c) 2011 2013 ROHM ROHM Co., Co., Ltd. Ltd.All Allrights rightsreserved. reserved. (c) 16/16 Direction of feed Order quantity needs to be multiple of the minimum quantity. 2013.03 C 2011.04 --Rev. Rev.B Datasheet Notice Precaution on using ROHM Products 1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you (Note 1) , transport intend to use our Products in devices requiring extremely high reliability (such as medical equipment equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property ("Specific Applications"), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM's Products for Specific Applications. (Note1) Medical Equipment Classification of the Specific Applications JAPAN USA EU CHINA CLASS CLASSb CLASS CLASS CLASS CLASS 2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The following are examples of safety measures: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. Our Products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM's Products under any special or extraordinary environments or conditions. If you intend to use our Products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents [b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust [c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves [e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items [f] Sealing or coating our Products with resin or other coating materials [g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] Use of the Products in places subject to dew condensation 4. The Products are not subject to radiation-proof design. 5. Please verify and confirm characteristics of the final or mounted products in using the Products. 6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7. De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual ambient temperature. 8. Confirm that operation temperature is within the specified range described in the product specification. 9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Precaution for Mounting / Circuit board design 1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice - GE (c) 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet Precautions Regarding Application Examples and External Circuits 1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2. You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. Therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. Precaution for Electrostatic This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control). Precaution for Storage / Transportation 1. Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of which storage time is exceeding the recommended storage time period. Precaution for Product Label QR code printed on ROHM Products label is for ROHM's internal use only. Precaution for Disposition When disposing Products please dispose them properly using an authorized industry waste company. Precaution for Foreign Exchange and Foreign Trade act Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with ROHM representative in case of export. Precaution Regarding Intellectual Property Rights 1. All information and data including but not limited to application example contained in this document is for reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable for infringement of any intellectual property rights or other damages arising from use of such information or data.: 2. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any third parties with respect to the information contained in this document. Other Precaution 1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM. 2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of ROHM. 3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the Products or this document for any military purposes, including but not limited to, the development of mass-destruction weapons. 4. The proper names of companies or products described in this document are trademarks or registered trademarks of ROHM, its affiliated companies or third parties. Notice - GE (c) 2014 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet General Precaution 1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents. ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny ROHM's Products against warning, caution or note contained in this document. 2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior notice. Before purchasing or using ROHM's Products, please confirm the la test information with a ROHM sale s representative. 3. The information contained in this doc ument is provi ded on an "as is" basis and ROHM does not warrant that all information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. Notice - WE (c) 2014 ROHM Co., Ltd. All rights reserved. Rev.001 Datasheet ba9741fs - Web Page Buy Distribution Inventory Part Number Package Unit Quantity Minimum Package Quantity Packing Type Constitution Materials List RoHS ba9741fs SSOP-A16 2500 2500 Taping inquiry Yes