RT6585B = 3H

 RT6585BGQW RT6585B 3H=1R 3H=1E 3H

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 has an oscillator
output to driver 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
RT6585A/B automatically switches to the diode-emulation
mode in light load applications. The RT6585A/B is available
in the WQFN-20L 3×3 package