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TN5D61A no. a1240-1/11 features high efficiency (on resistance 100m , vertical-type p-ch power mosfet). over current protection function (self recovery type). under voltage protection function. over temperature protection function (self recovery type). soft start function (variable subject to externally-connected capacitor). stand-by mode function (compatible with soft start terminal). specifications absolute maximum ratings at ta=25 c parameter symbol conditions ratings unit maximum input voltage v in max 57 v maximum output current i o max 5a drain-to-source voltage of built-in mosfet v dss --60 v drain current of built-in mosfet (dc) i d -- 9 a drain current of built-in mosfet (pulse) i dp pw 10 s, duty cycle 1% --36 a fb pin maximum input voltage v fb 30 v ss pin maximum input voltage v ss 7v allowable power dissipation p d 2.0 w tc=25 c15w operating temperature topr --25 to +125 c junction temperature tj 150 c storage temperature tstg --55 to +150 c sanyo semiconductors data sheet www.semiconductor-sanyo.com/network ordering number : ena1240 n1208iq ms im tc-00001714 specifications of any and all sanyo semiconductor co.,ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' s products or equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, av equipment, communication device, office equipment, industrial equipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. if there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. TN5D61A expd (excellent-performance power & rf device) separately-excited step-down switching regulator (24v output type)
TN5D61A no. a1240-2/11 recommend operating conditions parameter symbol conditions ratings unit input voltage v in ta=25 c 30 to 48 v output current i out ta=25 c 0 to 5 a operating temperature range topr rec --10 to +85 c electrical characteristics at ta=25 c, see specified test circuit ratings parameter symbol conditions min typ max unit output voltage v out v in =40v, i out =3a 23.3 24.0 24.7 v efficiency 10.0 4.5 2.8 7.2 3.5 12.5 2.54 1.27 2.75 3.81 2.4 (5.9) 1.6 16.0 14.0 1 2 3 4 5 0.9 0.7 0.5 3.2 1.27 2.54
TN5D61A no. a1240-3/11 block diagram pin functions pin no. symbol function 1v in power supply input (maximum 57v) 2 gnd gnd 3sw out pulse voltage output 4 fb feedback from output voltage 5 ss for soft start capacitor connection and standby mode switching application circuit example 1 5 2 3 4 v in ss gnd sw out fb under voltage protect softstart band gap osc amp comp output over temperature protect over current protect sense pch mosfet -- + -- + + + v in gnd gnd v out 1 5 2 3 4 v in ss gnd sw out fb
TN5D61A no. a1240-4/11 specified circuit for electrical characteristics [circuit] [components] symbol component specification c1 electrolytic capacitor 3000 to 3600
TN5D61A no. a1240-5/11 evaluation board [circuit] [components] symbol component specification maker remark f1 fuse 4a littelfuse 452 004 c1a electrolytic capacitor 1200
TN5D61A no. a1240-6/11 recommended pcb pattern to-220fi5h-hb specification silk printing (top view) to-220fi5h-hb specification pattern (perspective view)
TN5D61A no. a1240-7/11 output current -- a output voltage -- v output voltage -- output current output current -- a efficiency -- % efficiency -- output current output current -- a output voltage -- v characteristic of output current protection input voltage -- v input voltage -- v input current -- a input current -- input voltage case temperature, tc -- c output voltage -- v output voltage -- tc output voltage -- v output voltage -- input voltage case temperature, tc -- c oscillation frequency -- khz oscillation frequency -- tc input voltage -- v power loss -- w power loss -- input voltage 23.2 23.6 23.4 24.8 23.8 24.2 24.0 24.4 24.6 15 03 24 it13751 30v 40v v in =48v 60 70 100 80 90 15 03 24 it13752 48v v in =30v 0 5 30 10 15 20 0 1 2 3 6 4 5 25 0 3.0 0.5 1.0 1.5 2.0 2.5 2 068 410 it13753 it13754 30v v in =48v 10 30 20 40 50 60 10 30 20 40 50 60 10 30 20 40 50 60 it13755 23.2 23.4 23.6 24.8 23.8 24.2 24.0 24.4 24.6 0 100 --25 50 25 75 it13757 v in =40v 23.2 23.4 24.0 23.8 23.6 24.2 24.4 24.6 24.8 i out =3a i out =3a 130 120 140 160 150 170 180 0 100 --25 50 25 75 it13758 v in =40v 5a i out =5a 3a it13756 i out =5a 3a 40v i out =3a
TN5D61A no. a1240-8/11 input voltage -- v output voltage -- v input reduced-voltage characteristic input / output voltage -- v output voltage rising characteristic input / output voltage -- v output voltage falling characteristic input / output voltage -- v output voltage rising characteristic output voltage -- v capacitance of soft start capacitor -- output voltage rising characteristic capacitance of soft start capacitor -- output voltage rising characteristic output voltage -- v input / output voltage -- v output voltage falling characteristic it13760 input voltage: v in =40v output voltage: v out =24v on it13761 input voltage: v in =40v output voltage: v out =24v it13762 input voltage: v in =40v output voltage: v out =24v on it13764 c=0.01
TN5D61A no. a1240-9/11 example of over-voltage protection circuit. generally, in constant-voltage power supply circuit, output voltage will become higher than the specified value (over- voltage state) in case of any failures or pc board solderability defects. to minimize the damage caused by this over voltage, we recommend setting an over-voltage protection circuit. in designing, the following confirmations are necessary in actual circuit. 1) how the over-voltage protection circuit operates and its effects. 2) is there any malfunction due to ambient temperature change of each device or exogenous noises? over-voltage protection circuit example example of over-voltage protection circuit the thyristor will operate when it accept an over-voltage (v out ) signal, then the fuse is melted and the input power is cut off, then the operation of ic1 is stopped. continued on next page. v in gnd gnd it12639 v out fuse f1 c zd r thyristor constant-voltage power supply + + v in gnd gnd it12640 v out 1 thyristor fuse f1 ic1 5 234 c zd r
TN5D61A no. a1240-10/11 continued from preceding page. ss terminal (5 pin) also acts as standby mode switch. by setting ss terminal (5 pin) voltage to be equal or less than 0.3vtyp, the output on/off is able to be controlled by external signals. on/off control circuit example in addition, confirmation of the following points is necessary in actual circuit. 1) how the output on/off control operates and its effects. 2) is there any malfunction due to the ambient temperature change of each device or exogenous noises? points to remember in pattern designing 1) transient large current flows to v in terminal (1 pin), so we recommend the input capacitor should be 3000
TN5D61A no. a1240-11/11 sanyo semiconductor co.,ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. it is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. when designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of sanyo semiconductor co.,ltd. or any third party. sanyo semiconductor co.,ltd. shall not be liable for any claim or suits with regard to a third party?s intellectual property rights which has resulted from the use of the technical information and products mentioned above. information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equipment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. in the event that any or all sanyo semiconductor co.,ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd. ps this catalog provides information as of november, 2008. specifications and information herein are subject to change without notice.

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