The RT9232B is a single-phase synchronous buck PWM
DC-DC converter controller designed to drive two
N- MOSFETs. It provides a highly accurate, programmable
output voltage precisely regulated to low voltage
requirement with an internal 0.8V ± 1% reference.
The RT9232B uses an external compensated, single
feedback loop voltage mode PWM control for fast transient
response. An oscillator with Programmable frequency
(50kHz to 800kHz) reduces the external inductor and
capacitor component size for saving PCB board area.
The RT9232B provides fast transient response to satisfy
high current output applications (up to 25A) while
minimizing external components. It is suitable for highperformance
graphic processors, DDR and VTT power.
The RT9232B integrates complete protect functions such
as Soft Start, Output Enable, UVLO(under-voltage lockout)
and OCP into a small 14-pin package.