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XRP7410EH-F

Description
Switching converters, voltage regulators and controllers
Categorysemiconductor    Power management   
File Size667KB,13 Pages
ManufacturerExar [Exar Corporation]
Environmental Compliance
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XRP7410EH-F Overview

Switching converters, voltage regulators and controllers

XRP7410EH-F Parametric

Parameter NameAttribute value
MakerExar [Exar Corporation]
RoHSyes
XRP7603
500mA 29V Non-Sync. Buck High Power LED Driver
March 2009
Rev. 1.0.0
GENERAL DESCRIPTION
The XRP7603 is a non-synchronous voltage
mode PWM step down converter with
integrated high side FET optimized to drive
high power LEDs at up to 2A of continuous
current. A wide 4.5V to 29V input voltage
range allows for single supply operations from
industry standard 5V, 12V or 24V power rails.
A 1.2MHz constant operating frequency allows
for small external components selection while
an internal type II control loop compensation
reduces the overall component count and
solution footprint. A low 200mV feedback
reference voltage minimizes power dissipation
in the system while efficiency is maximized via
a 100% duty cycle capability. Dimming and
shutdown mode is provided via an enable
function when required. An adjustable over
current and under voltage lock out protection
insures safe operations under abnormal
operating conditions.
The XRP7603 is pin-to-pin compatible with
Exar’s XRP7604 and SP7600, non synchronous
buck high power led drivers respectively rated
at 1A and 2A.
The XRP7603 is offered in a compact thermally
enhanced RoHS compliant “green”/halogen
free 8-pin SO package.
APPLICATIONS
General Lighting and Displays
Architectural and Accent Lighting
Medical and Industrial Instrumentation
Video Projectors
FEATURES
0.5A Continuous Output Current
4.5V to 29V Single Rail Input Voltage
1.2MHz Constant Switching Frequency
Internal Control Loop Compensation
0.2V Feedback Reference Voltage
2.5% Output Voltage Accuracy
Built-in Soft Start
PWM & Analog Dimming Capability
Adjustable Over-Current Protection
Pin-to-Pin Compatible with
1A - XRP7604 and 2A - SP7600
RoHS Compliant “Green”/Halogen Free
8-pin SO Package
TYPICAL APPLICATION DIAGRAM
Fig. 1: XRP7603 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001

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Description Switching converters, voltage regulators and controllers Switching converters, voltage regulators and controllers
Maker Exar [Exar Corporation] Exar [Exar Corporation]
RoHS yes yes
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