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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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RT7205AL датащи(PDF) 13 Page - Richtek Technology Corporation |
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RT7205AL датащи(HTML) 13 Page - Richtek Technology Corporation |
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13 / 36 page  RT7205A 13 DS7205A-00 February 2018 www.richtek.com © Copyright 2018 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Parameter Symbol Conditions Min Typ Max Unit Initial Output Low Clamping Voltage before Start-up VOL_VG_INI VDD = 2.5V, ISINK = 50mA -- -- 1 V Internal Pull-Low Resistor RGS_LOW -- 20 -- k Ω V_TR Section V_TR Internal Resistance RVDS2 4.56 4.80 5.04 k Ω V_TR Sample and Hold Error ESH_VTR (|VV_TR_HIGH - VVTR_SH| / VV_TR_HIGH) x 100 -- 5 -- % V_TR Sample and Hold Threshold KVTR_SH VTH_SH = KVTR_SH x VV_TR_HIGH[n-1] -- 0.875 -- -- Mask Time tMASK VV_TR > VTH_SH -- 300 -- ns Register-Programmable V_TR Blanking Time tBLANK_ VTR VV_TR > VTH_SH (Note 5) 000 0.4 0.5 0.6 µs 001 0.6 0.7 0.8 010 0.8 0.9 1.0 011 1.0 1.1 1.2 100 1.2 1.3 1.4 101 1.4 1.5 1.6 110 1.6 1.7 1.8 111 1.8 1.9 2 Register-Programmable V_TR Under Voltage Threshold VTH_VTR_UV If VV_TR_HIGH - (VOUT x KVDS_SR) > VTH_VTR_UV, SR driver is active. 000 Disable V 001 0.3 0.4 0.5 010 0.25 0.35 0.45 011 0.2 0.3 0.4 100 0.15 0.25 0.35 101 0.1 0.2 0.3 110 0.05 0.15 0.25 111 0 0.1 0.2 Low Level Threshold for Input Voltage KVIN_LOW When VV_TR < KVIN_LOW x VOUT, It will send an interrupt to MCU. 2.0 2.2 2.4 -- V_TR Over-Voltage Threshold VTH_VTR_OV V9 = 4.5V 2.8 3.0 3.2 V Low Level Threshold for V_TR Falling Edge Detection and Dead Time Comparison Threshold VTH_VTR_DT 0.05 0.10 0.15 V Dead Time Comparator Delay tD_DT (Note 5) -- -- 40 ns Dead Time Comparator Blanking Time tBLANK_DT Disable dead time comparator on VG rising edge -- 700 -- ns |
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