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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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EPC700-CSP6 датащи(PDF) 4 Page - Espros Photonics corp |
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EPC700-CSP6 датащи(HTML) 4 Page - Espros Photonics corp |
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4 / 11 page  epc700/epc702 Functional Description Normal Operation During typical operation the OUT follows the IN as shown in Figure 1. As long as the output current does not exceed the current threshold, OUT is stable ON and STATUS is stable HIGH-Z. The delay from IN to OUT is defined as tON and tOFF for the rising and the falling edge respectively. Please note that the status of the pin OUT is dependent whether the chip is operated with or without external driver transistor. In the subsequent diagrams, the version with external driver transistor is shown only. Over-current Sequence A short on the load side will lead to an over-current through OUT. If an over-current stays longer than the time t del and text, OUT is turned off as shown in the figure below. At the same time STATUS changes its state to indicate an over-current situation to an external controller. STATUS can also be used to drive directly an indicator LED due to its 10mA driving capability. epc700 delivers a constant on-signal, whereas epc702 has a flashing output. Note: The parameter text used in this paper is described in Figure 7. © 2011 ESPROS Photonics Corporation Characteristics subject to change without notice 4 Datasheet epc700_702 - V2.2 www.espros.ch Figure 1: Normal operation Timing diagram operation mode epc700 LST IN OUT (without external Transistor) STATUS epc700 SHORT SENS HIGH-Z 05.01.2011 Page 1 File: This document is confidential and protected by law and international trades. It must not be shown to any third party nor be copied in any form without our written permission . 05.01.2011 Page 1 File: This document is confidential and protected by law and international trades. It must not be shown to any third party nor be copied in any form without our written permission . t LED t LED t LED t LED t LED t LED t LED t LED STATUS epc702 0 0 HIGH-Z 0 V th sens HIGH-Z t off t on OUT (with external Transistor) V Sat VDD V Sat Figure 2: Short circuit detection Timing diagram typical overcurrent epc700 LST V th sens t del t ext IN OUT STATUS epc700 SHORT SENS HIGH-Z 04.08.2010 Page 1 File: This document is confidential and protected by law and international trades. It must not be shown to any third party nor be copied in any form without our written permission . STATUS epc702 0 0 0 0 t LED HIGH-Z |
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