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PD166017T1F Scheda tecnica(PDF) 11 Page - Renesas Technology Corp |
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PD166017T1F Scheda tecnica(HTML) 11 Page - Renesas Technology Corp |
11 / 24 page PD166017T1F Preliminary R07DS0704EJ0100 Rev.1.00 Page 11 of 22 Apr 26, 2012 Case 2: Short circuit during on-condition The device shuts down automatically when the following condition (a) is detected. Detection of value (a) is activated after Von < Von(OvL)2 with hysteresis between detection (a) value and activation of (a) value. The sense current is fixed at IIS,fault. Shutdown is latched until the next reset via input. (a) Von > Von(OvL)2 after Von < Von(OvL)2 Short circuit IN IN OUT OUT VCC IL(SC) VOUT Von(OvL)2 Von(OvL)2 Von(OvL)2 VCC VCC Von(OvL)1 Von(OvL)1 td(oc): Turn-on check delay after input current positive slope 0 0 0 0 Short circuit detection IIS,fault IL VOUT t Depending on the external impedance (Evaluation circuit) VIN VIS tsdelay(fault) td(OC) td(OC) td(OC) VCC VIN RIS RL VOUT VON VIS VBAT IN OUT IS IIN IIS IL : Cable impedance tsdelay(fault): Fault sense signal delay after short circuit detection IL(SC): Short circuit detection current Case 2-(a) Von > Von(OvL)2 after Von < Von(OvL)2 Shutdown Shutdown |
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