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 (c) 2011 ROHM Co., Ltd. All rights reserved. 1/16 No.11028EBT10 2011.04 - Rev. B BA9743AFV, BA9744FV, BA9741F/FS Technical Note www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 2/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Technical Note 3/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Technical Note 4/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS Technical Note www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 5/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Technical Note 6/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS Technical Note www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 7/16 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 (c) 2011 ROHM Co., Ltd. All rights reserved. R UVLO 6 11 8 DT1 DT2 GND 8/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Technical Note 9/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Technical Note 10/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Technical Note 11/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Technical Note 12/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Technical Note 13/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. Technical Note 14/16 2011.04 -Rev. B BA9743AFV, BA9744FV, BA9741F/FS Technical Note Heat dissipation characteristics www.rohm.com (c) 2011 ROHM Co., Ltd. All rights reserved. 15/16 2011.04 -Rev. B Technical Note BA9743AFV, BA9744FV, BA9741F/FS 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 (c) 2011 ROHM Co., Ltd. All rights reserved. 16/16 Direction of feed Order quantity needs to be multiple of the minimum quantity. 2011.04 - Rev.B Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. 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