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XRP7725ILBTR-F

Description
switching controllers quad CH pgrmble pwr mgmt system
Categorysemiconductor    Other integrated circuit (IC)   
File Size4MB,34 Pages
ManufacturerExar [Exar Corporation]
Environmental Compliance
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XRP7725ILBTR-F Overview

switching controllers quad CH pgrmble pwr mgmt system

XRP7725ILBTR-F Parametric

Parameter NameAttribute value
ManufactureEx
Product CategorySwitching Controllers
RoHSYes
TopologyBuck
Number of Outputs4
Switching Frequency105 kHz to 1230 kHz
Input Voltage4.75 V to 25 V
Output Voltage0.6 V to 5.5 V
Output Curre130 mA
Maximum Operating Temperature+ 125 C
Mounting StyleSMD/SMT
Package / CaseTQFN-44
PackagingReel
Fall Time30 ns
IsolatiNon-Isolated
Minimum Operating Temperature- 40 C
Operating Supply Curre18 mA
Operating Supply Voltage4.75 V to 25 V
Rise Time30 ns
Factory Pack Quantity2500
XRP7725
Intel Node Manager Compatible Programmable
Power Management System
January 2014
Rev. 1.0.0
GENERAL DESCRIPTION
The XRP7725 is a quad channel Digital Pulse
Width Modulated (DPWM) Step down (buck)
controller. A wide 4.75V to 5.5V and 5.5V to
25V input voltage dual 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
independent channel to channel programmab
programmable
constant operating frequency, the XRP772
,
XRP7725
reduces overall component count and solution
footprint and optimizes 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 XRP7725 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.
The XRP7725 operation is fully controlled via
an SMBus-compliant I
2
C interface allowing for
advanced local and/or remote reconfiguration,
full performance monitoring and reporting as
well as fault handling.
Built-in independent output over voltage, over
temperature, over-current and under voltage
current
lockout protections insure safe operation
under abnormal operating conditions.
The XRP7725 is offered in a RoHS compliant,
“green”/halogen free 44-pin TQFN package.
pin
FEATURES
Quad Channel Step-down Controller
down C
Digital PWM 105kHz-1.23MHz Operation
1.23MHz
Individual Channel Frequency Selection
Patented digital PFM with Ultrasonic mode
Patented Over Sampling Feedback
Instantaneous current monitoring –
neous
®
Intel Node Manager Compatible
4.75V to 25V Input Voltage
4.75V-5.5V and 5.5V-25V Input Ranges
25V
0.6V to 5.5V Output Voltage
SMBus Compliant - I
2
C Interface
Int
Full Power Monitoring and Reporting
3 x 15V Capable PSIO + 2 x GPIOs
Full Start/Stop Sequencing Support
Built-in Thermal, Over-Current, UVLO
in
Over
and Output Over-Voltage Protections
Voltage
On Board 5V and 3.3V Standby LDOs
On Board Non-volatile Memory
volatile
Supported by PowerArchitect™ 5
PowerArchitect
APPLICATIONS
Blade Servers
Micro Servers
Network Adapter Cards
Base Stations
Switches/Routers
Broadcast Equipment
Industrial Control Systems
Automatic Test Equipment
TYPICAL APPLICATION DIAGRAM
XRP7725
Figure 1: XRP7725 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
668
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