RT8237B - High Efficiency Single Synchronous Buck PWM Controller
The RT8237A/B PWM controller provides high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high voltage batteries to generate low voltage CPU core, I/O, and chipset RAM supplies in notebook computers.
The constant on-time PWM control scheme handles wide
RT8237B Features
* Wide Input Voltage Range : 4.5V to 26V
* Output Voltage Range : 0.7V to 3.3V
* Built-in 0.5% 0.7V Reference Voltage
* Quick Load-Step Response within 100ns
* 4700ppm/°C Programmable Current Limit by Low Side RDS(ON) Sensing
* 4 Selectable Frequency Setting
* Soft-Start
