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The RT6585A/B is a dual-channel step-down, controller generating supply voltages for battery-powered systems. It includes two Pulse-Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and two fixed 5V/3.3V linear regulators. Each linear regulator provides up to 100mA output current and 3.3V linear regulator provides 1% accuracy under 35mA. The RT6585A/B provides a mode selection pin, SKIPSEL, to select Diode-Emulation Mode (DEM) or Audio Skipping Mode (ASM). Other features include on-board power-up sequencing, a power-good output, internal soft-start, and soft-discharge output that prevents negative voltage during shutdown. <br />A constant current ripple PWM control scheme operates without sense resistors and provides 100ns response to load transient. For maximizing power efficiency, the RT6585A/B automatically switches to the diode-emulation mode in light load applications. The RT6585A/B is available in the WQFN-20L 3x3 package. The recommended junction temperature range is -40°C to 125°C, and the ambient temperature range is -40°C to 85°C.
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<li class="mv5"> Support Connected Standby Mode for Ultrabook<br /> </li><li class="mv5"> CCRCOT Control with 100ns Load Step Response<br /> </li><li class="mv5"> PWM Maximum Duty Ratio > 98%<br /> </li><li class="mv5"> 5V to 25V Input Voltage Range <br /> </li><li class="mv5"> Dual Adjustable Output:<br />- CH1: 2V to 5.5V<br />- CH2: 2V to 4V<br /> </li><li class="mv5"> 5V/3.3V LDOs with 100mA Output Current<br /> </li><li class="mv5"> 1% Accuracy on 3.3V LDO Output<br /> </li><li class="mv5"> Internal Frequency Setting<br />- 400kHz/475kHz (CH1/CH2)<br /> </li><li class="mv5"> Internal Soft-Start and Soft-Discharge<br /> </li><li class="mv5"> 4700ppm/°C R<sub>DS(ON)</sub> Current Sensing<br /> </li><li class="mv5"> Independent Switcher Enable Control<br /> </li><li class="mv5"> Built in OVP/UVP/OCP/OTP<br /> </li><li class="mv5"> Non-latch UVLO<br /> </li><li class="mv5"> Power-Good Indicator<br /> </li><li class="mv5"> 20-Lead WQFN Package</li>
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<li class="mv5"> Notebook and Sub-Notebook Computers<br /> </li><li class="mv5"> System Power Supplies<br /> </li><li class="mv5"> 3-Cell and 4-Cell Li+ Battery-Powered Device</li>
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