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AQ112CY-S4-AJ-TR

Description
ultra-low dropout 1A voltage regulator
File Size616KB,10 Pages
ManufacturerAcutechnology
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AQ112CY-S4-AJ-TR Overview

ultra-low dropout 1A voltage regulator

AQ112
Ultra-Low Dropout
1A Voltage Regulator
Product Specification
Revision 1.6
September 13, 2006
General Description
The AQ112 is an ultra-low dropout three terminal
voltage regulator, offered in popular fixed options
or an adjustable version that can set a precise
voltage from 1.22V to 12V with two external
resistors.
It drops into the footprint of the popular LM1117
SOT-223 and provides a true 4
th
pin separated
from the output tab which allows a separate bias
connection from the pass transistor in order to
achieve
enable
and
ultra low dropout
from V
IN
to V
OUT
.
The
enable
pin provides a remote turn-off for low
power consumption. It draws virtually zero current
in shutdown mode and implements Sequential,
Ratiometric,
or
Simultaneous
sequencing
schemes.
To assure accuracy within 1%, the heart of the
AQ112 is a self-correcting AcuRef™ bandgap
reference.
On-chip current limit and thermal shutdown with
hysteresis protects against any combination of
overload and ambient temperature that might
cause the junction temperature to exceed safe
limits.
Applications
Graphic cards
PC motherboards
Switching power supply post-regulation
Telecom equipment
DVD video player
Features
Ultra Low Dropout (400mV at 1A)
Enable pin implements sequencing
Vout tolerance less than
1.5%
over
temperature
Stable with low cost 1uF capacitor
Thermal protection with hysteresis
Short circuit protection
Adjustable output
The AQ112 is featured in the new
SOT223 4-lead
TetraPack
TM
package.
RoHS compliant
available
Typical Application
www.acutechnology.com
AQ112

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