RT8230A = 2F

RT8230A = 2F

The RT8230A 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. The 5V linear regulator supplies
power to the PWM drivers. The RT8230A/B/C/D/E includes
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. To eliminate noise in audio applications,
an ultrasonic mode is included, which maintains the
switching frequency above 25kHz. Moreover, the diodeemulation mode maximizes efficiency for light load
applications. T