sensitron SCP-6212 / SCP-6212adj semiconductor datasheet SCP-6212 preliminary ? 221 west industry court ? deer park, ny 11729-4681 ? phone (631) 586-7600 ? fax (631) 242-9798 ? ? world wide web site - http://www.sensitron.com ? e-mail address - sales@sensitron.com ? 1 SCP-6212/ SCP-6212adj 1.25a efficient solenoid driver the SCP-6212 is designed to drive solenoids and relays in an efficient m anner, taking advantage of the characteristic of differing driving and holding currents. for 1.2 seconds upon receiving a command signal, or for an adjustable time on the SCP-6212adj, the device behaves as a traditional high-side driver, passing the input voltage to the output terminals. after the solenoid has engaged, plus some time margin, the delivered current is reduced by switching the output from the pass element to a dc- dc converter to fix the output at 15v, or to another adjustable voltage on the scp- 6212adj. the driver is controlled by a 5v signal. a block di agram is shown in figure 1. short-circuit protection is employed for each of the two operating states. delay-time to dc-dc operation and dc-dc output voltage on the scp- 6212adj are programmed with external resistors, shown in figure 4. features ? input voltage range 21v ? 40v (12v ? 40v for SCP-6212adj) ? 1.25a drive capability ? at vin = 28v, i load = 1.25a o v out = 28v nominal for 1.2 seconds upon command o v out = 15v nominal after 1.2 seconds ? adjustable time delay and hold voltage (SCP-6212adj) ? integrated catch diode for inductive kickback ? 0v ? 5v on/off control ? pwm operating frequency 2.2mhz ? short circuit protection ? low-profile surface mount package pass element dc-dc converter delay off in out control figure 1 . block diagram absolute maximum ratings v in ................ ............. .............. ......40v v cmd .............. .................. -0.2v to 12v output current (drive) .............1.25a output current (hold) ................0.5a storage and operating temperature ................ .............. ..........-40 0 c to 85 0 c
sensitron SCP-6212 / SCP-6212adj semiconductor datasheet SCP-6212 preliminary ? 221 west industry court ? deer park, ny 11729-4681 ? phone (631) 586-7600 ? fax (631) 242-9798 ? ? world wide web site - http://www.sensitron.com ? e-mail address - sales@sensitron.com ? 2 electrical characteristics t a = 25 0 c unless otherwise specified. parameter conditions min. typ. max. units turn-on threshold 1.3 1.8 2.3 v turn-off threshold 1.4 1.9 2.4 v driving current voltage drop i out = 0.25a 0.25 0.40 v (v in - v out ) i out = 0.50a 0.45 0.60 v i out = 1.25a 0.85 1.00 v time delay to hold-current mode v cmd = 5.0v 1.0 1.2 1.4 s efficiency in hold-current mode i out = 0.25a 85 89 % pwm frequency 1 2.2 mhz 1 pwm frequency is provided for information only, for the purpose of general electromagnetic interfer ence consideration. the outp ut is a smooth dc voltage in both driving and holding modes. 1 vin 2 vin 4 command 3 command gnd 6 gnd 5 vout 7 vout 8 scp-xxxx figure 2 . SCP-6212 pinout figure 3. time delay vs. command voltage 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2345678 command voltage (v) time delay (s)
sensitron SCP-6212 / SCP-6212adj semiconductor datasheet SCP-6212 preliminary ? 221 west industry court ? deer park, ny 11729-4681 ? phone (631) 586-7600 ? fax (631) 242-9798 ? ? world wide web site - http://www.sensitron.com ? e-mail address - sales@sensitron.com ? 3 resistor selection rt for time delay from command signal to output voltage reduction is made by setting rt 6667t, where t is time in seconds. resistor se lection rv for output voltage selection is made by rv 144000/(vout-0.49). figure 4 . SCP-6212adj pinout and external program resistors vout 8 vout 7 gnd 5 vout set 6 3 time set 4 command 2 vin 1 vin scp-xxxxadj rt rv figure 5. turn-on, showing 28v to 15v transition. figure 6. output under short-circuit conditions.
sensitron SCP-6212 / SCP-6212adj semiconductor datasheet SCP-6212 preliminary ? 221 west industry court ? deer park, ny 11729-4681 ? phone (631) 586-7600 ? fax (631) 242-9798 ? ? world wide web site - http://www.sensitron.com ? e-mail address - sales@sensitron.com ? 4 figure 7. mechanical outline
sensitron SCP-6212 / SCP-6212adj semiconductor datasheet SCP-6212 preliminary ? 221 west industry court ? deer park, ny 11729-4681 ? phone (631) 586-7600 ? fax (631) 242-9798 ? ? world wide web site - http://www.sensitron.com ? e-mail address - sales@sensitron.com ? 5 disclaimer: 1- the information given herein, including the specifications and dimens ions, is subject to change without prior notice to impr ove product characteristics. before ordering, purchas ers are advised to contact the sensitron semiconductor sales department for the latest version of the datasheet(s). 2- in cases where extremely high reliabilit y is required (such as use in nuclear power control, aerospace and aviation, traffic equipment, medical equipment , and safety equipment) , safety s hould be ensured by using semi conductor devices that featur e assured safety or by m eans of users? fail-safe precautions or other arrangement . 3- in no event shall sensitron semiconductor be liable for any dam ages that may result from an accident or any other cause duri ng operation of the user?s units according to the datas heet(s). sensitron semiconductor assumes no responsibility for any intellectual property claims or any other problems that may result from applications of info rmation, products or circuits described in the datasheets. 4- in no event shall sensitron semiconductor be liable for any fa ilure in a semiconductor device or any secondary damage result ing from use at a value exceeding the absolute maximum rating. 5- no license is granted by the datasheet(s ) under any patents or other rights of any third party or sensitron semiconductor. 6- the datasheet(s) may not be reproduced or duplicated, in any form, in whole or par t, without the expressed written permissio n of sensitron semiconductor. 7- the products (technologies) de scribed in the datasheet(s) are not to be provi ded to any party whose purpose in their applica tion will hinder maintenance of international peace and safety nor are they to be ap plied to that purpose by their direct purchasers or any thir d party. when exporting these products (technolog ies), the necessary procedures are to be taken in accordance with related laws and regulatio ns.
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