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RT2702GQW Datasheet(PDF) 6 Page - Richtek Technology Corporation |
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RT2702GQW Datasheet(HTML) 6 Page - Richtek Technology Corporation |
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6 / 20 page  6 RT2702 www.richtek.com DS2702-00 October 2016 © Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Parameter Symbol Test Conditions Min Typ Max Unit VREF Internal Reference Voltage VREF TA = 25°C 0.597 0.6 0.603 V Output Voltage Accuracy VFB VFB to RGND excluding external resistor divider tolerance -1 -- 1 % Switching Frequency Control Switching Frequency fSW VIN = 6V, VOUT = 1V, RTON = 390k -- 500 -- kHz Minimum Turn Off Time (LG on) tOFF_MIN VFB = 0.55V -- 275 400 ns Minimum Skip Mode Frequency VFB > 0.6V 20 -- -- kHz Soft- Start Soft Start Setting Current ISS 8 10 12 A Internal Soft Start tSS_INT VSS = VDRV, 10% VREF to 90% VREF 1 3 5 ms Soft- Off Soft Off Bleeding Resistor RDIS -- 30 -- Over Current Protection VILIM Output Voltage VILIM 1.188 1.2 1.212 V Over Current Threshold Offset VOC_OFS VCSP VCSN = VILIM x (RCS/RILIM) = 50mV 3 -- 3 mV Zero Current Threshold VZC GND – PHASE 6 -- 2 mV Protection and PGOOD POK Output Voltage Logic low, sinking 4 mA -- -- 0.4 V OVP Threshold VOVP VFB rising 108.5 112.5 116.5 % UVP Threshold VUVP VFB falling 83.5 87.5 91.5 % Power Good Low Delay tPOK_DLY -- 10 -- s PWM Driving Capability PWM Source Resistor RPWM_SRC VDRV to PWM -- -- 35 PWM Sink Resistor RPWM_SK PWM to GND -- -- 15 Logic I/O EN Input Voltage VEN_OFF Controller OFF -- 0.925 -- V VEN_ON Controller ON -- 1 -- V MODE Input Voltage VMODE_L ASM (Audio Skipping Mode) -- -- 0.4 V VMODE_H FCCM 1.2 -- -- V THWN Input Voltage THWN_L V PWM float, VDRV remains ON -- -- 0.4 V THWN_H V Normal operation 2 -- -- V DISB Output Resistor DISB_SRC V VDRV to DISB -- -- 55 DISB_SK V DISB to GND -- -- 30 |
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