AV1085
TO-252,263,220
3A Adjustable Low Dropout
Linear Regulator (LDO)
@vic
GENERAL DESCRIPTION
FEATURES
The AV1085 is a positive and low dropout
three-terminal voltage regulator with 3A out-
put current capability. This device is design-
ed for use in low voltage applications that
offers lower dropout voltage and faster tran-
sient response.
Very easy to use, it requires only two
external resistors to set the output voltage
Low dropout voltage:
1.3V typical at up to 3A
Low ground current
Fast transient response
Current & thermal limiting
Line regulation: 0.5% typical
Load regulation: 0.5% typical
TO-220, TO-263 and TO-252 packages
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This device is fully protected against over
current faults, over temperature operation,
reversed input polarity, reversed lead insert-
ion, transient voltage spike …etc.
On-Chips trimming the reference voltage to
1% and features the low dropout of maxi-
mum 1.45 volts.
APPLICATIONS
High current microprocessor supplies
Low voltage logic supply
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The AV1085 Series regulators are available
in the popular industry standard TO-220
TO-263 and TO-252 packages.
Powering VGA & sound card
Portable instrumentation
Constant current regulator
Post regulator for switching power supply
TYPICAL APPLICATION
Vin
Vout
AV1085
IN
OUT
ADJ
Vref
R1
R2
Cin
Cout
10uF
+
+
10uF
Iadj
Vo = Vref (1+R2/R1) + Iadj x R2
1. Cin needed if device is far from from filter capacitors.
2. Cout required for stability.
- Basic Adjustable Regulator Circuit -
MAY-31-2001
1
AVICTEK [ Avic Technology ]
