A Product Line of
Diodes Incorporated
AZ1085C
3A LOW DROPOUT LINEAR REGULATOR
Description
The AZ1085C is a series of low dropout positive voltage regulators
with a maximum dropout of 1.5V at 3A of load current.
The series features on-chip thermal shutdown. It also includes a
bandgap reference and a current limiting circuit.
The AZ1085C is available in 1.5V, 1.8V, 2.5V, 3.3V, 5.0V and
adjustable versions. The fixed versions integrate the adjust resistors.
The adjustable version can set the output voltage with two external
resistors.
The AZ1085C series is available in standard packages of TO263,
TO263-2, TO252-2 (3), TO252-2 (4) and TO252-2 (5).
Features
Low Dropout Voltage: Typical 1.3V at 3A
Current Limiting and Thermal Protection
Output Current: 3A
Current Limit: 4.5A
Operating Junction Temperature: 0 to +125°
C
Compatible with Low ESR Ceramic Capacitor
Line Regulation: 0.015% (Typ)
Load Regulation: 0.1% (Typ)
Lead-Free Packages: TO263, TO263-2
Totally Lead-Free; RoHS Compliant (Notes 1 & 2)
Lead-Free Packages, Available in “Green” Molding Compound:
TO263, TO263-2, TO252-2 (3), TO252-2 (4), TO252-2 (5)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
High Efficiency Linear Regulators
Battery Charger
Post Regulation for Switching Supplies
Microprocessor Supply
Mother Board Power Supplies
DVD-Video Player
Telecom Equipment
Set Top Boxes and Web Boxes Modules' Supply
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)
INPUT
OUTPUT
ADJ/GND
3
2
1
INPUT
OUTPUT
ADJ/GND
3
2
1
INPUT
OUTPUT (TAB)
ADJ/GND
3
2
1
TO263
TO263-2
TO252-2 (3) Option 1
AZ1085C
Document number: DS36735 Rev. 2 - 2
1 of 21
www.diodes.com
April 2014
© Diodes Incorporated
A Product Line of
Diodes Incorporated
AZ1085C
Functional Block Diagram
Absolute Maximum Ratings
(Note 4)
Symbol
T
J
T
STG
T
LEAD
Parameter
Operating Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering, 10sec.)
TO263
θ
JA
Thermal Resistance (Note 5)
TO263-2
TO252-2 (3)/TO252-2 (4)/
TO252-2 (5)
ESD
Notes:
Rating
+150
-65 to +150
+260
75
75
100
Unit
º
C
º
C
º
C
º
C/W
ESD (Human Body Model)
2000
V
4. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied.
Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.
5. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the
device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, T
J(max),
the junction-to-
ambient thermal resistance, θ
JA,
and the ambient temperature, T
A.
The maximum allowable power dissipation at any ambient temperature is calculated
using: P
D(max)
= (T
J(max)
-T
A
)/θ
JA.
Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into
thermal shutdown.
AZ1085C
Document number: DS36735 Rev. 2 - 2
3 of 21
www.diodes.com
April 2014
© Diodes Incorporated
A Product Line of
Diodes Incorporated
AZ1085C
Recommended Operating Conditions
Symbol
V
IN
T
J
Input Voltage
Operating Junction Temperature Range
Parameter
Min
–
0
Max
12
+125
Unit
V
º
C
Electrical Characteristics
(Typicals and limits appearing in normal type apply for T
J
= +25° Limits appearing in
Boldface
type
C.
apply over the entire operating junction temperature range 0 to +125°
C.)
Symbol
V
REF
Parameter
Reference Voltage
Conditions
AZ1085C-ADJ,
I
OUT
= 10mA, V
IN
-V
OUT
= 3V, T
J
= +25°
C,
10mA ≤ I
OUT
≤ 3A, 1.5V ≤ V
IN
-V
OUT
≤ 5V
AZ1085C-1.5,
I
OUT
= 0mA, V
IN
= 4.5V, T
J
= +25°
C,
10mA ≤ I
OUT
≤ 3A, 3.0V ≤ V
IN
≤ 6V
AZ1085C-1.8,
I
OUT
= 0mA, V
IN
= 4.8V, T
J
= +25°
C,
10mA ≤ I
OUT
≤ 3A, 3.3V ≤ V
IN
≤ 7V
Min
1.238
1.225
1.485
1.47
1.782
1.764
2.475
2.45
3.267
3.234
4.95
4.9
–
–
–
–
–
–
Typ
1.250
1.250
1.5
1.5
1.8
1.8
2.5
2.5
3.3
3.3
5
5
0.015
0.035
0.5
1
0.5
1
0.5
1
0.5
1
0.5
1
Max
1.262
1.275
1.515
1.53
1.818
1.836
2.525
2.55
3.333
3.366
5.05
5.1
0.2
0.2
6
6
6
6
6
6
6
6
10
10
Unit
V
V
V
V
OUT
Output Voltage
AZ1085C-2.5,
I
OUT
= 0mA, V
IN
= 5.5V, T
J
= +25°
C,
10mA ≤ I
OUT
≤ 3A, 4.0V ≤ V
IN
≤ 7V
AZ1085C-3.3,
I
OUT
= 0mA, V
IN
= 6.3V, T
J
= +25°
C,
10mA ≤ I
OUT
≤ 3A, 4.8V ≤ V
IN
≤ 8V
AZ1085C-5.0,
I
OUT
= 0mA, V
IN
= 8V, T
J
= +25°
C,
10mA ≤ I
OUT
≤ 3A, 6.5V ≤ V
IN
≤ 10V
AZ1085C-ADJ,
I
OUT
= 10mA, 2.85V ≤ V
IN
≤ 10V
AZ1085C-1.5,
I
OUT
= 10mA, 3.0V ≤ V
IN
≤ 10V
AZ1085C-1.8,
I
OUT
= 10mA, 3.3V ≤ V
IN
≤ 10V
AZ1085C-2.5,
I
OUT
= 10mA, 4.0V ≤ V
IN
≤ 10V
AZ1085C-3.3,
I
OUT
= 10mA, 4.8V ≤ V
IN
≤ 10V
AZ1085C-5.0,
I
OUT
= 10mA, 6.5V ≤ V
IN
≤ 10V
V
V
V
%
mV
mV
mV
mV
mV
∆V
OUT
Line Regulation
AZ1085C
Document number: DS36735 Rev. 2 - 2
4 of 21
www.diodes.com
April 2014
© Diodes Incorporated
A Product Line of
Diodes Incorporated
AZ1085C
Electrical Characteristics
(Cont. Typicals and limits appearing in normal type apply for T
J
= +25° Limits appearing in
Boldface
C.
type apply over the entire operating junction temperature range 0 to +125°
C.)
Symbol
Parameter
Conditions
AZ1085C-ADJ,
0mA ≤ I
OUT
≤ 3A, V
IN
-V
OUT
= 3V
AZ1085C-1.5,
0mA ≤ I
OUT
≤ 3A, V
IN
-V
OUT
= 3V
AZ1085C-1.8,
0mA ≤ I
OUT
≤ 3A, V
IN
-V
OUT
= 3V
AZ1085C-2.5,
0mA ≤ I
OUT
≤ 3A, V
IN
-V
OUT
= 3V
AZ1085C-3.3,
0mA ≤ I
OUT
≤ 3A, V
IN
-V
OUT
= 3V
AZ1085C-5.0,
0mA ≤ I
OUT
≤ 3A, V
IN
-V
OUT
= 3V
Min
–
–
–
–
–
–
–
–
–
–
3.2
–
–
60
–
–
–
–
–
Typ
0.1
0.2
3
7
3
7
3
7
3
7
5
10
1.3
6.34
6.34
7.36
4.5
3
5
72
55
0.2
0.5
0.5
0.003
Max
0.3
0.4
15
20
15
20
15
20
15
20
20
35
1.5
–
–
–
–
10
10
–
120
5
–
–
–
Unit
%
mV
mV
mV
mV
mV
V
∆V
OUT
Load Regulation
V
DROP
Dropout Voltage
I
OUT
= 3A, ∆V
REF
, ∆V
OUT
= 1%
TO263
θ
JC
Thermal Resistance
(Junction to Case)
TO263-2
TO252-2 (3)/TO252-2 (4)/TO252-2 (5)
°
C/W
I
LIMIT
I
LOAD
(MIN)
I
Q
PSRR
I
ADJ
∆I
ADJ
–
–
–
Current Limit
Minimum Load Current
Quiescent Current
Ripple Rejection
Adjust Pin Current
Adjust Pin Current Change
Long Term Stability
Temperature Stability
RMS Noise (% of V
OUT
)
V
IN
-V
OUT
= 3V
V
IN
= 10V (AZ1085C-ADJ)
V
IN
= 10V (AZ1085C)
f
RIPPLE
= 120Hz, C
OUT
= 25µF, I
OUT
= 3A,
V
IN
-V
OUT
= 3V
V
IN
= 4.25V, I
OUT
= 10mA
10mA ≤ I
OUT
≤ 3A, 1.5V ≤ V
IN
-V
OUT
≤ 6V
T
A
= +125° 1000Hrs
C,
I
OUT
= 10mA, V
IN
-V
OUT
= 1.5V
T
A
= +25°C, 10Hz ≤ f ≤ 10kHz
A
mA
mA
dB
µA
µA
%
%
%
AZ1085C
Document number: DS36735 Rev. 2 - 2
5 of 21
www.diodes.com
April 2014
© Diodes Incorporated
京公网安备 11010802033920号
EEWORLD
