View BD9141MUV_1488056.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

1/18 www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. single-chip type with built-in fet switching regulator series output 2a or more high-efficiency step-down switching regulator with built-in power mosfet BD9141MUV description rohm?s high efficiency step-down switching regulator BD9141MUV is a power supply designed to produce a low voltage including 5.0/3.3 volts from 2 lithium cell power supply line. offers high efficiency with our original pulse skip control technology and synchronous rectifier. employs a current m ode control system to provide faster transient response to sudden change in load. features 1) offers fast transient response with current mode pwm control system. 2) offers highly efficiency for all load range with synchrono us rectifier (nch/pch fet) and sllm (simple light load mode) 3) incorporates soft-start function. 4) incorporates thermal pr otection and ulvo functions. 5) incorporates short-current protec tion circuit with time delay function. 6) incorporates shutdown function 7) employs small surface mount package : vqfn020v4040 applications power supply for lsi including dsp, micro computer and asic line up matrix parameter symbol limits unit BD9141MUV v cc voltage v cc -0.3 +15 1 v pv cc voltage pv cc -0.3 +15 1 v en voltage v en -0.3 +15 v sw,ith voltage,vreg v sw ,v ith , v reg -0.3 +15 v power dissipation 1 pd1 0.34 2 w power dissipation 2 pd2 0.70 3 w power dissipation 3 pd3 2.21 * 4 w power dissipation 4 pd4 3.56 * 5 w operating temperatur e range topr -40 +105 storage temperature range tstg -55 +150 maximum junction temperature tjmax +150 pd should not be exceeded. ic only. 1 layer, mounted on a board 74.2mm 74.2mm 1.6mm glass-epoxy pcb (copper foil area : 10.29mm 2 ) 4 layers, mounted on a board 74.2mm 74.2mm 1.6mm glass-epoxy pcb (1 st ,4 th copper foil area : 10.29mm 2 2 nd ,3 rd copper foil area : 5505mm 2 ) ,. 4 layers, mounted on a board 74.2mm 74.2mm 1.6mm glass-epoxy pcb (copper foil area : 5505mm 2 ) , copper foil in each layers. no.09027eat37
technical note 2/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved.
technical note 3/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. 2.10.1 c0.2 0.5 1.0 15 6 10 11 15 16 20 4.0 0.1 4.0 0.1 2.10.1 0.40.1 0.25 +0.05 -0.04 0.02 +0.03 -0.02 1.0max. (0.22) 0.08 s s d9141 lot no. v cc
technical note 4/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved.
technical note 5/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. 470 480 490 500 510 520 530 5 6 7 8 9 10111213 input voltage:v cc [v] frequency:f osc [khz] ta = 2 5
technical note 6/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. ? ? ? ? ?
technical note 7/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. ? ?
technical note 8/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. ? ? ?
technical note 9/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. ? ?
technical note 10/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved.
technical note 11/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. ??? ??? ??? ???
technical note 12/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. 3. selection of input capacitor (cin) a low esr 22 ???
technical note 13/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. stable feedback loop may be achieved by canceling the pole fp (min.) produced by the output capacitor and the load resistance with cr zero correction by the error amplifier. 5. determination of output voltage the output voltage v out is determined by the equation (6): v out =(r2/r1+1) ??? ? ?
technical note 14/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved.
technical note 15/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. ? ? ? ? ?
technical note 16/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved.
technical note 17/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. 8. ground wiring pattern if small-signal gnd and large-current gnd are provided, it wi ll be recommended to separate the large-current gnd pattern from the small-signal gnd pattern and establish a single ground at the reference point of the se t pcb so that resistance to the wiring pattern and voltage fluctuations due to a large curr ent will cause no fluctuations in voltages of the small-signal gnd. pay attention not to cause fluctuations in the gnd wiring pattern of external parts as well. 9 . selection of inductor it is recommended to use an inductor with a series resistance element (dcr) 0.1
technical note 18/18 BD9141MUV www.rohm.com 2009.06 - rev. a ? 2009 rohm co., ltd. all rights reserved. d 9 4 1 D e2 : embossed taping b 1 u m v e 2 (unit : mm) vqfn020v4040 2.10.1 1 15 11 20 16 5 10 6 1.0 0.5 0.25 +0.05 ?0.04 2.10.1 0.40.1 c0.2 1.0max 0.02 +0.03 ?0.02 (0.22) 4.00.1 4.00.1 1pin mark 0.08 s s order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity direction of feed 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 2500pcs e2 () direction of feed reel 1pin
r0039 a www.rohm.com ? 2009 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, redundancy, 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, aerospace 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.

▲Up To Search▲

Price & Availability of BD9141MUV

	To Download BD9141MUV Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .