AQ1117 Datasheet, PDF (1/7 Pages) Acutechnology Semiconductor – Low Dropout 1 Amp Voltage Regulator

Product Specification
Revision 1.5
AQ1117
Low Dropout
1 Amp Voltage Regulator
September 19, 2005
General Description
The AQ1117 is a 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.
AQ1117 is offered in SOT-89 which has a lower
thermal resistance and fits in smaller foot print
than a standard SOT-223. With a dropout
voltage of less than one volt, the AQ1117 can be
used in applications where drop out voltage and
size are an issue.
To assure accuracy within 1.5% over
temperature the heart of the AQ1117 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
• Featured in small SOT- 89 package
• Vout tolerance 1.5% over temperature
• Stable with low cost 1uF capacitor
• Low dropout voltage (1V at 1 Amp)
• Thermal protection with hysteresis
• Short circuit protection
• Offered with 1.8V, 2.5V, and 3.3V fixed or
adjustable output
• RoHS complaint available
Typical Application
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AQ1117