The RT6585A/B has an oscillator output to driver the external charge pump application. 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.

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.

Features:

－ Support Connected Standby Mode for Ultrabook

－ CCRCOT Control with 100ns Load Step Response

－ Support MLCC Stable

－ PWM Maximum Duty Ratio > 96%

－ 5V to 25V Input Voltage Range

－ 2V to 5.5V Output Voltage Range

－ 5V/3.3V LDOs with 100mA Output Current

－ 1% Accuracy on 3.3V LDO Output

－ Oscillator Driving Output for Charge Pump Application

－ Internal Frequency Setting

－ 400kHz/475kHz (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-Load WQFN Package

－ RoHS Compliant and Halogen Free