XRP7665 Datasheet, PDF (12/12 Pages) Exar Corporation – 3A 18V Synchronous Step-Down Converter

XRP7 6 6 5
3 A 1 8 V Sy n ch r o n o u s St ep - Do w n Co n v er t er
REVISION HISTORY
Revision
1.0.0
1.1.0
Date
02/14/2011
10/13/2011
2.0.0
02/12/2013
2.0.1
3/29/2013
Description
Initial release of datasheet
Added Moisture Sensitivity Level (MSL) information
Reformat of datasheet
Changed min operating input voltage from 4.75V to 4.5V
Updated Electrical Specifications parameter (quiescent current, feedback voltage, high
and low side switch on - resistance, oscillator frequency, EN shutdown threshold voltage
and hysteresis, EN lockout threshold voltage and hysteresis, UVLO threshold and
hy steresis, soft - start time)
Updated figure 2: XRP7665 block diagram
Updated Pin Description, EN pin description
Updated all Typical Performance Characteristics curves
Updated Enable pin description
Deleted Electrical Specification para meter s (shutdown supply current, EN shutdown
threshold voltage and hysteresis, EN lockout threshold voltage and hysteresis)
Added Electrical Specification para meter s (EN enable t hreshold voltage and hysteresis )
$GGHG³(1$%/()pa8ra1gr&ap7h,t2o t1he´theory of operation section.
FOR FURTHER ASSISTAN CE
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NOTICE
EXAR Corporation reserves the right to make changes to
the products contained in this publication in order to improve
design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein,
conveys no license under any patent or other right, and makes no rep
resentation that the circuits are free of patent
infringement. Charts and schedules contained here in are only for illustration purposes and may vary depending upon a
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is assumed for inaccuracies.
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malfunction of the product can reasonably be expected to cause failure o
f the life support system or to significantly affect its
safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in
writing, assurances to its satisfaction that: (a) the risk of injury or damage h
as been minimized; (b) the user assumes all
such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances.
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12 / 12
Rev. 2.0. 1