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PDF AZ2940 Fiche technique - Diodes

Numéro de référence AZ2940
Description 1A ULTRA LOW DROPOUT LINEAR REGULATOR
Fabricant Diodes 
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AZ2940 Datasheet, Description
A Product Line of
Diodes Incorporated
AZ2940
1A ULTRA LOW DROPOUT LINEAR REGULATOR
Description
The AZ2940 is a low dropout three-terminal regulator with a typical
dropout of 280mV at 1A output current.
The AZ2940 provides current limit and thermal shutdown. On-chip
thermal shutdown provides protection against any combination of high
current and ambient temperature that would create excessive junction
temperatures.
The AZ2940 has 1.2V, 1.8V, 2.5V, 3.3V and 5.0V versions.
The AZ2940 series is available in the industry standard TO-220-3,
TO-220F-3, TO-263-3, TO-252-2 (3), TO-252-2 (4), TO-252-2 (5) and
SOT-223 power packages. (Detailed information please refer to
pages 13, 14)
Features
Minimum Guaranteed Output Current: 1A
Dropout Voltage at IOUT = 1A: 280mV Typ. (Except 1.2V and 1.8V
Versions)
Output Accuracy: 1%
Low Ground Current
Internal Current Limit and Thermal Protection
Reversed-battery and Reversed-lead Insertion Protection
Fast Transient Response
TO-220-3, TO-263-3, TO-252-2 (3), TO-252-2 (4), TO-252-2 (5)
Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
Available in “Green” Packages: TO-220-3, TO-220F-3, TO-263-3,
TO-252-2 (3), TO-252-2 (4), TO-252-2 (5) and SOT-223
Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
LCD TV
Set Top Box
LCD Monitor
SMPS Post Regulator
Laptop, Palmtop and Notebook
Portable Instrumentation
USB Power Supply
Notes:
1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.
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
(Front View)
3
2
1
TO-220-3 (Option 1)
(Front View)
3
2
1
TO-220-3 (Option 3)
AZ2940
Document number: DS37880 Rev. 3 - 2
VOUT
GND
VIN
VOUT
GND
VIN
1 of 29
www.diodes.com
(Front View)
3
2
1
TO-220-3 (Option 2)
(Front View)
3
2
1
TO-220F-3
VOUT
GND
VIN
VOUT
GND
VIN
June 2015
© Diodes Incorporated
AZ2940 Fiche technique
Functional Block Diagram
VIN 1
1.24V
Reference
+
-
A Product Line of
Diodes Incorporated
AZ2940
3 VOUT
16V
Thermal
Shutdown
2 GND
Absolute Maximum Ratings (Note 5)
Symbol
VIN
TJ
TSTG
TLEAD
θJA
ESD
ESD
Parameter
Input Voltage
Operating Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering, 10sec)
Thermal Resistance (Junction to Ambient)
ESD (Human Body Model)
ESD (Machine Model)
Rating
16
+150
-65 to +150
+260
TO-220-3/TO-220F-3
TO-263-3
TO-252-2 (3)/(4)/(5)
SOT-223
5000
300
60
60
100
120
Unit
V
oC
oC
oC
oC/W
V
V
Note 5:
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.
Recommended Operating Conditions
Symbol
VIN
TJ
Parameter
Input Voltage
Operating Junction Temperature
Min
2.5
-40
AZ2940
Document number: DS37880 Rev. 3 - 2
3 of 29
www.diodes.com
Max
13.2
+125
Unit
V
oC
June 2015
© Diodes Incorporated

3 Page

AZ2940 pdf
A Product Line of
Diodes Incorporated
AZ2940
Electrical Characteristics (Cont.)
AZ2940-2.5 Electrical Characteristics
(Operating Conditions: VIN = 3.5V, IOUT = 10mA, CIN = 10µF, COUT = 10µF, TJ = +25oC, unless otherwise specified. The Boldface applies over -
40oC to +125oC)
Symbol
VOUT
VRLINE
VRLOAD
VOUT/∆T
VDROP
IGND
ISC
ILOAD (MIN)
θJC
Parameter
Condition
Output Voltage
Line Regulation
Load Regulation
Output Voltage Temperature
Coefficient
Dropout Voltage (Note 8)
IOUT = 10mA
10mA IOUT 1A, 3.5V VIN 13.2V
IOUT = 10mA, 3.5V VIN 13.2V
VIN = 3.5V, 10mA IOUT 1A
IOUT = 10mA
VOUT = 1%
IOUT = 100mA
IOUT = 1A
Ground Current
VIN = 3.5V
IOUT = 750mA
IOUT = 1A
Short Circuit Current
Minimum Load Current
Output Noise Voltage (rms)
Thermal Resistance
VOUT = 0V (Note 6)
10Hz to 100kHz, IOUT = 100mA,
COUT = 10µF
TO-252-2 (3)/(4)/(5)
SOT-223
Min
2.475
2.45
1.5
Typ
2.5
2.5
5.0
7.5
50
70
280
12
18
2.2
1
400
7.8
29.7
Max
2.525
2.55
25
37.5
250
200
550
25
5
Unit
V
V
mV
mV
µV/oC
mV
mV
mA
mA
A
mA
µV
oC/W
Notes:
6. VIN = VOUT(NOMINAL)+1V.
8. Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value which is measured at VOUT+1V
applied to VIN.
AZ2940
Document number: DS37880 Rev. 3 - 2
6 of 29
www.diodes.com
June 2015
© Diodes Incorporated

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