General Description
The RT6575C/D 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 RT6575C/D has an oscillator
output to drive the external charge pump application. Other
features include on-board power-up sequencing, a powergood
output, internal soft-start, and soft-discharge output
that prevents negative voltage during shutdown.
A constant current ripple PWM control scheme operates
without sense resistors and provides 100ns response to
load transient. For maximizing power efficiency, the
RT6575C/D automatically switches to the diode-emulation
mode in light load applications. To eliminate noise in audio
applications, an audio-skipping mode is included, which
maintains the switching frequency above 25kHz. The
RT6575C/D is available in the WQFN-20L 3x3 package.

Features
 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
 Oscillator Driving Output for Charge Pump
Application
 Support Audio-Skipping Mode (ASM)
 Internal Frequency Setting
 300kHz/355kHz (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