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The RT6585C 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 RT6585C 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 RT6585C automatically switches to the diode-emulation mode in light load applications. The RT6585C is available in the WQFN-20L 3x3 package. The recommended junction temperature range is -40&deg;C to 125&deg;C.
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  • Support Connected Standby Mode for Ultrabook
  • CCRCOT Control with 100ns Load Step Response
  • PWM Maximum Duty Ratio > 98%
  • 5V to 25V Input Voltage Range
  • Dual Adjustable Output:
    - CH1: 2V to 5.5V
    - CH2: 2V to 4V
  • 5V/3.3V LDOs with 100mA Output Current
  • 1% Accuracy on 3.3V LDO Output
  • Internal Frequency Setting
    - 500kHz/600kHz (CH1/CH2)
  • Internal Soft-Start and Soft-Discharge
  • 4700ppm/°C RDS(ON) Current Sensing
  • Independent Switcher Enable Control
  • Built in OVP/UVP/OCP/OTP
  • Non-latch UVLO
  • Power-Good Indicator
  • 20-Lead WQFN Package
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Notebook and Sub-Notebook Computers<br />System Power Supplies<br />3-Cell and 4-Cell Li+ Battery-Powered Device
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