XRP7708_10 Datasheet, PDF (1/2 Pages) Exar Corporation – Quad Channel Digital PWM Step Down Controller

Your Electronic Engineering Resource
XRP7708 Quad Channel Digital PWM Step Down Controller
General Description:
The XRP7708 is a quad-output pulse-width modulated (PWM)
step-down DC-DC controller with a built-in LDO for standby power
and GPIOs. The device provides a complete power management
solution in one IC and is fully programmable via an I2C serial
interface. Independent Digital Pulse Width Modulator (DPWM)
channels regulate output voltages and provide all required
protection functions such as current limiting and over-voltage
protection.
Each output voltage can be programmed from 0.9V to 5.1V without
the need of an external voltage divider. The wide range of the programmable DPWM switching frequency
(from 300 KHz to 1.5 MHz) enables the user to optimize between efficiency and component size. Input
voltage range is from 6.5V to 20V.Two controllers support a load of up to 5A,while the other two controllers
support up to 8A. I2C bus interface is provided to program the IC as well as to communicate with the host for
fault reporting and handling, power rail parameters monitoring, etc.
The device offers a complete solution for softstart
and soft-stop. The start-up delay and ramp of each
PWM regulator can be independently controlled.
The device can start up a pre-biased PWM channel
without causing large negative inductor current.
Key Features:
 4 Channel Step Down Controller
o 2 x 5A Channels & 2 x 8A
Channels
o Programmable Output Voltage
0.9V-5.1V
o Programmable 1.5MHz DPWM
Frequency
Legal Disclaimer: The content of the pages of this website is for your general information and use only. It is subject to change without notice. From time to time, this website may
also include links to other websites. These links are provided for your convenience to provide further information. They do not signify that we endorse the website(s). We have no
responsibility for the content of the linked website(s). Your use of any information or materials on this website is entirely at your own risk, for which we shall not be liable. It shall
be your own responsibility to ensure that any products, services or information available through this website meet your specific requirements.