Diodes AP1086T33G-U 1.5a low dropout positive adjustable or fixed-mode regulator Datasheet

AP1086
1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Description
Pin Assignments
(Top View)
AP1086 is a low dropout positive adjustable or fixed-mode
regulator with 1.5A output current capability. The product is
specifically designed to provide well-regulated supply for low
voltage IC applications such as high-speed bus termination
and low current 3.3V logic supply. AP1086 is also well suited
for other applications such as VGA cards. AP1086 is
guaranteed to have lower than 1.4V dropout at full load
current making it ideal to provide well-regulated outputs of
1.25V to 5.0V with 4.7 to 12V input supply by different output
voltage.
VIN
3
2
VOUT
1
Adj (GND)
Tab is VOUT
TO252-3L
(Top View)
3
Features
VIN
2
•
•
•
•
•
•
•
•
3-Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V,3.3V,
5.0V
1.4V Maximum Dropout at Full Load Current
Fast Transient Response
Built-in Thermal Shutdown
Output Current Limiting
Lead Free Packages: TO252-3L, TO263-3L, TO220-3L
TO252-3L, TO263-3L, and TO220-3L: Available in
“Green” Molding Compound (No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
VOUT
1
Adj (GND)
Tab is VOUT
TO263-3L
(Top View)
3
VIN
2
VOUT
1
Adj (GND)
Tab is VOUT
TO220-3L
Notes:
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
Typical Application Circuit
Adjustable Regulator
5V to 3.3V Fixed Mode Regulator
5V
5V
C1
100uF
C1
100uF
Vin
Vout
GND
Tab is Vout
Vin
3.3V/1.5A
VOUT=Vref × (1+R2/R1)
Vout
C2
100uF
2.5V/1.5A
R1
121 Ω
R2
121 Ω
Adj
Tab is Vout
Note: Vo = V RE ∗
F
AP1086
Document number: DS31028 Rev. 6 - 2
C2
100uF
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( R2
+ )
1 R1
June 2010
© Diodes Incorporated
AP1086
1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Pin Descriptions
Pin Name
I/O
Adj (GND)
VOUT
O
VIN
I
Pin #
Description
1
Adjustable (Ground only for fixed mode)
2
The output of the regulator. A minimum of 10uF capacitor must be connected
from this pin to ground to insure stability.
3
The input pin of regulator. Typically a large storage capacitor is connected
from this pin to ground to insure that the input voltage does not sag below the
minimum dropout voltage during the load transient response. This pin must
always be 1.4V higher than VOUT in order for the device to regulate properly.
Functional Block Diagram
VIN
3
2
VOUT
1
Adj
+
-
+
+
1.25V
CURRENT
LIMIT
+
-
Thermal
Shutdown
Absolute Maximum Ratings
Symbol
VIN
TST
TMJ
Parameter
Rating
-0.3 to 12
-65 to +150
150
DC Supply Voltage
Storage Temperature
Maximum Junction Temperature
Unit
V
o
C
o
C
Recommended Operating Conditions
Symbol
Top
Parameter
Operating Junction Temperature Range
AP1086
Document number: DS31028 Rev. 6 - 2
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Min
Max
0
125
Unit
o
C
June 2010
© Diodes Incorporated
AP1086
1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Electrical Characteristics (Under Operating Conditions)
Parameter
Reference Voltage
Conditions
AP1086-Adj
AP1086-1.5
Output Voltage
Line Regulation
ο
TA = 25 C, (VIN-VOUT)= 1.5V,IO = 10mA
ο
IOUT = 10mA, TA = 25 C, 3V≦VIN≦12V
ο
Min
Typ.
Max
Unit
1.225
1.250
1.275
1.470
1.500
1.530
V
AP1086-1.8
IOUT = 10mA, TA = 25 C, 3.3V≦VIN≦12V
1.764
1.800
1.836
V
AP1086-2.5
IOUT = 10mA, TA = 25οC, 4V≦VIN≦12V
2.450
2.500
2.550
V
AP1086-3.3
IOUT = 10mA, TA = 25οC, 4.8V≦VIN≦12V
3.235
3.300
3.365
V
4.900
5.000
5.100
V
-
-
0.2
%
ο
AP1086-5.0
IOUT = 10mA, TA = 25 C, 6.5V≦VIN≦12V
AP1086-XXX
IO = 10mA, VOUT+1.5V<VIN<12V
ο
AP1086-Adj
VIN = 3.3V, 0mA<Io<1.5A, TA = 25 C
(Note 2, 3)
-
-
1
%
AP1086-1.5
VIN = 3V, 0mA<Io<1.5A, TA = 25οC
(Note 2, 3)
-
12
15
mV
AP1086-1.8
VIN = 3.3V, 0mA<Io<1.5A, TA = 25οC
(Note 2, 3)
-
15
18
mV
AP1086-2.5
VIN = 4V, 0mA<Io<1.5A, TA = 25οC
(Note 2, 3)
-
20
25
mV
AP1086-3.3
VIN = 5V, 0≦IOUT≦1.5A, TA = 25οC,
TJ = 25oC (Note 2, 3)
-
26
33
mV
AP1086-5.0
VIN = 8V, 0≦IOUT≦1.5A, TA = 25οC,
TJ = 25oC (Note 2, 3)
-
40
50
mV
Dropout Voltage
(VIN-VOUT)
AP1086-Adj/-2.5/
-3.3/-3.6/-5.0
IOUT = 1.5A, ΔVOUT = 1%VOUT
-
1.3
1.4
V
Current Limit
AP1086-Adj/-2.5/
-3.3/-3.6/-5.0
(VIN-VOUT) = 5V
1. 6
-
-
A
Minimum Load
Current (Note 4)
AP1086-XXX
o
o
0 C≦TJ≦125 C
-
5
10
mA
Thermal Regulation
TA = 25οC, 30ms pulse
-
0.008
0.04
%/W
Load Regulation
Ripple Rejection
f = 120Hz,COUT = 25uF Tantalum, IOUT = 1.5A
-
60
70
dB
RMS Noise (% of VOUT)
10Hz ≤ f ≤ 10KHz
-
0.003
-
%
Temperature Stability
IO = 10mA
-
0.5
-
%
θJA Thermal Resistance
Junction-to-Ambient
(No heat sink; No air flow)
TO252-3L
TO263-3L
TO220-3L
-
101
83
86
-
o
C/W
θJC Thermal Resistance
Junction-to-Case
TO252-3L: Control Circuitry/Power Transistor
TO263-3L: Control Circuitry/Power Transistor
TO220-3L: Control Circuitry/Power Transistor
-
15
0.65/2.7
0.65/2.7
-
o
C/W
Notes:
AP1086-XXX
VIN = VOUT+3V
2. See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant
junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the package.
3. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the difference in input and
output and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.
4. Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential the device is
guaranteed to regulate if the output current is greater than 10mA.
AP1086
Document number: DS31028 Rev. 6 - 2
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AP1086
1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Functional Description
Introduction
The AP1086 adjustable or fixed-mode Low Dropout (LDO) regulator is a 3 terminal device which can easily be
programmed by internal mask change to any voltages within the range of 1.25V to VIN-1.4V. The AP1086 only
needs 1.4V differential between VIN and VOUT to maintain output regulation. In addition, the output voltage
tolerances are also extremely tight and they include the transient response as part of the specification. For
example, Intel VRE specification calls for a total of +/- 100mV including initial tolerance, load regulation and 0 to
1.5A load step.
The AP1086 is specifically designed to meet the fast current transient needs as well as providing an accurate
initial voltage, reducing the overall system cost with the need for fewer output capacitors.
Load Regulation
Since the AP1086 is only a 3 terminal device, it is not possible to provide true remote sensing of the output
voltage at the load. But it can supply good load regulation by internal feedback bypass the external loss such as
adjustable mode.
Stability
The AP1086 requires the use of an output capacitor as part of the frequency compensation in order to make the
regulator stable. For most applications a minimum of 10uF aluminum electrolytic capacitor insures both stability
and good transient response.
Thermal Design
The AP1086 incorporates an internal thermal shutdown that protects the device when the junction temperature
exceeds the maximum allowable junction temperature. Although this device can operate with junction
temperatures in the range of 150oC, it is recommended that the selected heat sink be chosen such that during
maximum continuous load operation the junction temperature is kept below the temperature.
Layout Consideration
The output capacitors must be located as close to the VOUT terminal of the device as possible. It is recommended
to use a section of a layer of the PC board as a plane to connect the VOUT pin to the output capacitors to prevent
any high frequency oscillation that may result due to excessive trace inductance.
AP1086
Document number: DS31028 Rev. 6 - 2
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AP1086
1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Typical Performance Characteristics
0.20
2. 0
Output Voltage Deviation (%)
1. 8
1. 6
Dropout Voltage (V)
1. 4
1. 2
0
I load=1.5A
-0.20
Tj = 25 oC
1. 0
-0.40
0. 8
Tj = 125 oC
0. 6
-0.80
0. 4
0. 2
0
0
0.25
0.5
0.75
1.0
1.25
-1
1.5
-25
Output Current (A)
Dropout Voltage vs Output Current
0
25
50
Temperature ( oC)
75
100
125
Load Regulation vs Temperature
2
1
1.5
0. 5
0
-0.5
-1
-1.5
-2
-50
-25
0
25
50
Temperature ( oC)
75
100
125
150
Output Voltage Deviation (%)
Output Voltage Change (%)
0.8
1
0.6
0.4
0.2
0
2
6.5
5.5
40
20
0
-20
-40
0
20
40
60
80
100 120 140 160 180 200
TIME (us)
30
Document number: DS31028 Rev. 6 - 2
12
Cin=1uF
Cout=10uF Tantalum
Preload=100mA
20
10
0
-10
-20
2
1
0
-1
0
Line Transient Response
AP1086
10
Line Regulation
Load Current (A) Output Voltage Deviation (mV)
Output Voltage Deviation (mV) Input Voltage (V)
Cin=1uF
Cout=10uF Tantalum
8
Input Voltage (V)
Percent Change in Output Voltage vs Temperature
7.5
6
4
10
20
30
40
50
60
70
80
90
100
TIME (us)
Load Transient Response
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AP1086
1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Ordering Information
AP1086 X XX X - X
Low Dropout Regulator
Package
D : TO252-3L
K : TO263-3L
T : TO220-3L
Device
AP1086DXXL-13
AP1086DXXG-13
AP1086KXXL-13
AP1086KXXG-13
AP1086TXXL-U
AP1086TXXG-U
Notes:
Package
Code
Packaging
(Note 5)
D
D
K
K
T
T
TO252-3L
TO252-3L
TO263-3L
TO263-3L
TO220-3L
TO220-3L
Vout
Blank = Adj
15 = 1.5V
18 = 1.8V
25 = 2.5V
33 = 3.3V
50 = 5.0V
Lead Free
Packing
L : Lead Free
G : Green
U : Tube
13 : Taping & Reel
Tube
Part Number
Quantity
Suffix
NA
NA
NA
NA
NA
NA
NA
NA
50
-U
50
-U
13” Tape and Reel
Part Number
Quantity
Suffix
2500/Tape & Reel
-13
2500/Tape & Reel
-13
800/Tape & Reel
-13
800/Tape & Reel
-13
NA
NA
NA
NA
5. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP1086
Document number: DS31028 Rev. 6 - 2
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© Diodes Incorporated
AP1086
1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Marking Information
(1) TO252-3L
( Top view )
Logo
Part Number
1086 for ADJ
86-VV : 15 for 1.5V
18 for 1.8V
25 for 2.5V
33 for 3.3V
50 for 5.0V
86-VV
YY WW X X
L : Lead Free
G : Green
YY : Year : 01~09
WW : Week : 01~52, 52 represents
52 and 53 week
X : Internal Code
(2) TO263-3L
( Top view )
Logo
Part Number
VV: 15 for 1.5V
18 for 1.8V
25 for 2.5V
33 for 3.3V
50 for 5.0V
Blank for ADJ
1086-VV
YY WW X X
L : Lead Free
G : Green
YY : Year : 01~09
WW : Week : 01~52, 52 represents
52 and 53 week
X : Internal code
(3) TO220-3L
( Top view )
Logo
Part Number
VV: 15 for 1.5V
18 for 1.8V
25 for 2.5V
33 for 3.3V
50 for 5.0V
Blank for ADJ
AP1086
Document number: DS31028 Rev. 6 - 2
1086-VV
YY WW X X
L : Lead Free
G : Green
YY : Year : 01~09
WW : Week : 01~52, 52 represents
52 and 53 week
X : Internal code
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AP1086
1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Package Outline Dimensions (All Dimensions in mm)
6.354/6.80 Typ 6.58
5.6
7.2
11.0
2.25
2.0
5.40/6.20
Typ 5.57
5.6
5.20/5.50 Typ 5.35
0.88/1.27
(1) Package type: TO252-3L
1.2
0.64/1.02
Typ 0.83
Land Pattern Recommendation (Unit: mm)
0.89/
1.14
0.45/0.58
Typ 0.52
2.18/2.40
Typ 2.29
9.00/10.40 Typ 9.70
0.51
SEE NOTE2
2.28
BSC.
4.57 BSC.
0.61 Typ
SEATING
PLANE
0.45/0.58
Typ 0.52
2.54
BSC.
1.27/
1.78
Typ
1.52
3
15.7
9.1
8.65/9.65 Typ 9.15
10.9
14.61/15.88 Typ 15.24
9.65/10.29 Typ 9.97
2.92
Typ 1.30
(2) Package type: TO263-3L
1.3
0.51/0.99 Typ 0.75
0.38 Typ
2.28/2.80 Typ 2.54
AP1086
Document number: DS31028 Rev. 6 - 2
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1.14/1.40
Typ 1.27
4.06/4.83
Typ 4.45
1.14/1.40 Typ1.27
2.54
Land Pattern Recom m endation (Unit: m m )
June 2010
© Diodes Incorporated
AP1086
1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
Package Outline Dimensions (Continued)
(3) Package type: TO220-3L
3.53/4.09
Typ 3.81
3.55/4.85
Typ 4.20
0.51/1.40
Typ 0.95
SEATING PLANE
9.70/10.70
Typ 10.20
5.84/6.86
Typ 6.35
14.20/16.50
Typ 15.35
2.54/3.43
Typ 2.98
1.14/1.78
Typ 1.46
4.83/5.33
Typ 5.08
AP1086
Document number: DS31028 Rev. 6 - 2
12.72/14.72
Typ 13.72
3.66/6.35
Typ 5.00
0.31/1.14
0.51/1.14
Typ 0.72
Typ 0.83
2.99/2.79
Typ 2.54
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2.03/2.92
Typ 2.48
June 2010
© Diodes Incorporated
AP1086
1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR
FIXED-MODE REGULATOR
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DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS
DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
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A critical component is any component in a life support device or system whose failure to perform can be reasonably expected
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AP1086
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