Diodes AZ2085 User Manual
AZ2085
Document number: DS36595 Rev. 3 - 2
1 of 11
www.diodes.com
March 2014
© Diodes Incorporated
AZ2085
A Product Line of
Diodes Incorporated
NE W P R OD U C T
Description
The AZ2085 series is low dropout positive voltage regulators with a
maximum dropout of 1.5V at 3A of load current.
The device features on-chip thermal shutdown. It also includes a
bandgap reference and a current limiting circuit.
The AZ2085 is available in adjustable version. The adjustable version
can set the output voltage with two external resistors.
The AZ2085 series is available in standard packages of TO252-2 (3)
and TO252-2 (5).
Applications
High Efficiency Linear Regulators
Battery Charger
Digital Video/Camcorder
Post Regulation for Switching Supplies
Microprocessor Supply
Mother Board Power Supplies
DVD-video Player
Telecom Equipment
Set Top Boxes and Web Boxes Modules' Supply
Features
Low Dropout Voltage: Typical 1.2V at 3A
Current Limiting and Thermal Protection
Output Current: 3A
Current Limit: 4.5A
Operating Junction Temperature: 0 to +125°C
Line Regulation: 0.015% (Typ)
Load Regulation: 0.1% (Typ)
Adjust Pin Current: 6μA (Typ)
Minimum Load Current: 0.3mA (Typ)
Compatible with Low ESR Ceramic Capacitor
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
1
2
3
INPUT
OUTPUT
ADJ/GND
1
2
3
INPUT
OUTPUT
ADJ/GND
1
2
3
INPUT
OUTPUT
ADJ/GND
3A LOW DROPOUT LINEAR REGULATOR
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen - and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Pin Assignments
(Top View) (Top View) (Top View)
TO252-2 (3) Option 1 TO252-2 (3) Option 2 TO252-2 (5)
AZ2085
Document number: DS36595 Rev. 3 - 2
2 of 11
www.diodes.com
March 2014
© Diodes Incorporated
AZ2085
A Product Line of
Diodes Incorporated
NE W P R OD U C T
AZ2085
ADJ/GND
V
OUT
= V
REF
* (1+R2/R1) + I
ADJ
* R2
R2
R1
V
IN
V
OUT
CIN=10µF C
OUT
=22µF
INPUT OUTPUT
3
2
1
Pin Number
Pin Name
Function
1
ADJ/GND
Adjust pin/Ground
2
OUTPUT
Output voltage
3
INPUT
Input voltage
Typical Applications Circuit
Pin Descriptions
AZ2085
Document number: DS36595 Rev. 3 - 2
3 of 11
www.diodes.com
March 2014
© Diodes Incorporated
AZ2085
A Product Line of
Diodes Incorporated
NE W P R OD U C T
Thermal
Protection
+
-
For Adjustable Output, disconnect A1 and A2, connect B
INPUT
OUTPUT
ADJ/
GND
A1
A2
B
3
2
1
Functional Block Diagram
AZ2085
Document number: DS36595 Rev. 3 - 2
4 of 11
www.diodes.com
March 2014
© Diodes Incorporated
AZ2085
A Product Line of
Diodes Incorporated
NE W P R OD U C T
Symbol
Parameter
Rating
Unit
V
IN
Input Voltage
18
V
T
J
Operating Junction Temperature
+150
°C
T
STG
Storage Temperature Range
-65 to +150
°C
T
LEAD
Lead Temperature (Soldering, 10sec)
+260
°C
θ
JA
Thermal Resistance (Junction to Ambient)
100
°C/W
—
ESD (Human Body Model)
2000
V
Symbol
Parameter
Min
Max
Unit
V
IN
Input Voltage — 12 V T
J
Operating Junction Temperature
0
+125
°C
Absolute Maximum Ratings (Note 4)
Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are str ess ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Condi tions” is not implied.
Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
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