XR77128 Datasheet (Exar) - Quad Output Digital PWM/PFM Universal PMIC

XR77128, Quad Output Digital PWM/PFM Universal PMIC

The XR77128 is a quad channel digital Pulse Width Modulated (PWM) step down (buck) controller.

A wide 4.75V to 5.5V and 5.5V to 25V input voltage range allows for single supply operation from standard power rails.

With integrated FET gate drivers, two LDOs for standby power and a 105kHz to 1.23MHz i

XR77128 Features

* Quad Channel Step-down Controller  Digital PWM 105kHz-1.23MHz Operation  Individual Channel Frequency Selection  Patented digital PFM with Ultrasonic mode  Patented Over Sampling Feedback  Programmable 5 coefficient PID control  Integrated MOSFET Drivers  Supports DrMOS devices

* 4.