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1/10 www.rohm.com 2010.11 - rev. a ? 2010 rohm co., ltd. all rights reserved. power management ics for au tomotive body control ldo regulator BD3650FP-M description the BD3650FP-M is low-saturation regulator. this ic has a built-in over-current protec tion circuit that prevents the destruction of the ic due to output short circuits and a thermal shutdown circuit that protects the ic from thermal damage due to overloading. features 1) output current: 0.3a 2) high output voltage precision : 2% 3) low saturation with pdmos output 4) built-in over-current protection circuit that prevents the destruction of the ic due to output short circuits 5) built-in thermal shutdown circuit for protec ting the ic from thermal damage due to overloading 6) low esr capacitor 7) to252-3 packaging applications onboard devices (vehicle equipment, car ster eos, satellite navigation systems, etc.) absolute maximum ratings (ta=25 ) parameter symbol ratings unit supply voltage *1 vcc -0.3 +36.0 v power dissipation *2 pd 1.2 w operating temperatur e range topr -40 +125 storage temperature range tstg -55 +150 maximum junction temperature tjmax 150 *1 not to exceed pd. *2 to252-3:reduced by 9.6mw / over ta = 25 , when mounted on glass epoxy board: 70mm 70mm 1.6mm. operating conditions (ta=-40 +125) parameter symbol min. max. unit supply voltage *3 vcc 5.6 30.0 v output current io 0 0.3 a *3 consider the voltage drop (dropout voltage) due to the output current. note: this product is not designed for protection against radioactive rays. no.10039eat08
technical note 2/10 BD3650FP-M www.rohm.com 2010.11 - rev. a ? 2010 rohm co., ltd. all rights reserved.
technical note 3/10 BD3650FP-M www.rohm.com 2010.11 - rev. a ? 2010 rohm co., ltd. all rights reserved. ambient temperature: ta[] ambient temperature: ta []
technical note 4/10 BD3650FP-M www.rohm.com 2010.11 - rev. a ? 2010 rohm co., ltd. all rights reserved.
technical note 5/10 BD3650FP-M www.rohm.com 2010.11 - rev. a ? 2010 rohm co., ltd. all rights reserved.
technical note 6/10 BD3650FP-M www.rohm.com 2010.11 - rev. a ? 2010 rohm co., ltd. all rights reserved. 0 1 2 3 4 5 0 25 50 75 100 125 150 ambient temper ature: ta () R ? ?? Q ?? Q Q `??g? c ~e () ? ? ?
technical note 7/10 BD3650FP-M www.rohm.com 2010.11 - rev. a ? 2010 rohm co., ltd. all rights reserved. R R
technical note 8/10 BD3650FP-M www.rohm.com 2010.11 - rev. a ? 2010 rohm co., ltd. all rights reserved. 10. output pins it is necessary to place capacitors between each output pin and gnd to prevent oscillation on the output. usable capacitance values range from 4.7f to 1000f. ceramic capacitors can be used as long as their esr value is low enough to prevent oscillation (0.001 ? ? ?
technical note 9/10 BD3650FP-M www.rohm.com 2010.11 - rev. a ? 2010 rohm co., ltd. all rights reserved. 14. positive voltage surges on v cc pin a power zener diode should be inserted between v cc and gnd for protection against voltage surges of more than 36v on the v cc pin. 15. negative voltage surges on v cc pin a schottky barrier diode should be inserted between v cc and gnd for protection against voltages lower than gnd on the v cc pin. 16. output protection diode loads with large inductance components may cause reverse current flow during startup or shutdown. in such cases, a protection diode should be inserted on the output to protect the ic. 17. regarding input pins of the ic this monolithic ic contains p+ isolation and p substrate layers between adjacent elements in order to keep them isolated. pn junctions are formed at the intersection of these p layers with the n layers of other elements, creating parasitic diodes and/or transistors. for example (refer to the figure below):
technical note 10/10 BD3650FP-M www.rohm.com 2010.11 - rev. a ? 2010 rohm co., ltd. all rights reserved.
r1010 a www.rohm.com ? 2010 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specied herein is subject to change for improvement without notice. the content specied 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 specications, 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 specied 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 specied 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 specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specied in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, re or any other damage caused in the event of the failure of any product, such as derating, redunda ncy, re control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospac e machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specied herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law.

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