XRP7714 Exar, XRP7714 Datasheet

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XRP7714

Manufacturer Part Number
XRP7714
Description
Quad Channel Digital PWM Step Down Controller
Manufacturer
Exar
Datasheet

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February 2010
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 I
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
programmable
(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.
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.
TYPICAL APPLICATION DIAGRAM
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
An I
divider.
2
C bus interface is provided to
DPWM
The
wide
switching
2
C serial interface.
range
Q
Q
Fig. 1: XRP7714 Application Diagram
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APPLICATIONS
FEATURES
• Multi Channel Power Supplies
• Audio-Video Equipments
• Industrial & Telecom Equipments
• Processors & DSPs Based Equipments
• 4 x 5A Channel Step Down Controller
• 4.75V-25V Single Input Voltage Range
• Up to 6 Reconfigurable GPIO Pins
• Fully Programmable via I
• Independent Digital Pulse Width
• Complete Monitoring and Reporting
• Complete Power Up/Down Sequencing
• Full On Board Protection
• Built-in 3.3V/5V LDO
• Configuration Development Tools
• Green/Halogen Free 40-pin TQFN
D
D
− Programmable Output Voltage 0.9V-5.1V
− Programmable 1.5MHz DPWM Frequency
− Integrated FETs Drivers
Modulator (DPWM) channels
OTP, UVLO, OCP and OVP
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Tel. +1 510 668-7000 – Fax. +1 510 668-7001
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C Interface
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