The XRP7720 is a quad output universal customizable PMIC comprised of a quad channel Digital Pulse Width Modulated (DPWM) step-down (buck) controller and 5V LDO. A wide 4.75V to 5.5V and 5.5V to 18V input voltage dual range allows for single supply operation from standard power rails. It is pin compatible to the popular XRP7724 and provides full flexibility during the development phase while offering a cost effective option for high volume production units.
With integrated FET gate drivers, it can operate from 105kHz to 1.23MHz with independent channel-to-channel programmable operating frequency, the XRP7720 reduces overall component count and solution footprint while optimizing conversion efficiencies. A selectable Digital Pulse Frequency Mode (DPFM) and low operating current result in better than 80% efficiency down to 10mA load provides support for portable and Energy Star compliant applications. Each XRP7720 output channel is individually programmable down to a minimum 0.6V with a resolution of 2.5mV, and configurable for precise soft-start and soft-stop sequencing, including delay and ramp control.
During development, the XRP7720ILB-DEV is configured using PowerArchitectTM 5.1 (PA 5.1) through an I2C interface, allowing for short development of the power system and short time-to-market for the entire system. Once development is completed and volume production is ready to commence, Exar will assign a unique part suffix and deliver a customized XRP7720.
Built-in independent output overvoltage, over temperature, overcurrent and undervoltage lockout protections ensure safe operation under abnormal operating conditions.
The XRP7720 is offered in a RoHS compliant, “green”/halogen free 44-pin TQFN package.