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XRP7714EVB Datasheet(PDF) 1 Page - Exar Corporation

Part # XRP7714EVB
Description  Quad Channel Digital PWM Step Down Controller
Download  27 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRP7714EVB Datasheet(HTML) 1 Page - Exar Corporation

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February 2010
Rev. 1.1.3
Exar Corporation
www.exar.com
48720 Kato Road, Fremont CA 94538, USA
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
GENERAL DESCRIPTION
The XRP7714 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 4.75V to
25V.
An 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 including
independently programmable: soft-start, soft-
stop, start-up delay and ramp of each PWM
regulator.
APPLICATIONS
• Multi Channel Power Supplies
• Audio-Video Equipments
• Industrial & Telecom Equipments
• Processors & DSPs Based Equipments
FEATURES
• 4 x 5A Channel Step Down Controller
− Programmable Output Voltage 0.9V-5.1V
− Programmable 1.5MHz DPWM Frequency
− Integrated FETs Drivers
• 4.75V-25V Single Input Voltage Range
• Up to 6 Reconfigurable GPIO Pins
• Fully Programmable via I2C Interface
• Independent Digital Pulse Width
Modulator (DPWM) channels
• Complete Monitoring and Reporting
• Complete Power Up/Down Sequencing
• Full On Board Protection
OTP, UVLO, OCP and OVP
• Built-in 3.3V/5V LDO
• Configuration Development Tools
• Green/Halogen Free 40-pin TQFN
TYPICAL APPLICATION DIAGRAM
Fig. 1: XRP7714 Application Diagram


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