AOZ1117TI-AAL [AOS]
1A Low Dropout Linear Regulator; 1A低压降线性稳压器
| 型号： | AOZ1117TI-AAL |
| 厂家： | 
ALPHA & OMEGA SEMICONDUCTORS |
| 描述： | 1A Low Dropout Linear Regulator |
| 文件： | 总8页 (文件大小：419K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AOZ1117
1A Low Dropout Linear Regulator
General Description
Features
The AOZ1117 is a low dropout positive adjustable or
fixed-mode regulator with minimum of 1A 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. The AOZ1117 is also well suited for other appli-
cations such as VGA cards. The AOZ1117 is guaranteed
to have lower than 1.4V dropout at full load current mak-
ing it ideal to provide well-regulated outputs of 1.25V to
5.0V with 2.75V to 14V input supply.
● 1.4V maximum dropout at full load current
● Fast transient response
● Output current limiting
● Built-in thermal shutdown
● Good noise rejection
● 3-terminal adjustable or fixed 1.5V, 1.8V, 2.5V, 3.3V,
or 5.0V
● TO252 package
Applications
● PC peripheral
● Communication
Typical Circuits
Fixed Output Example
Adjustable Output Example
V
+ 5V
V
= 3.3V
IN
OUT
V
IN
+ 5V
V
= 3.3V
OUT
3
2
V
V
IN
OUT
3
2
V
V
OUT
IN
1
R1
24
ADJ/GND
0Ω
C2
C1
10μF
C2
C1
10μF
1
10μF
AOZ1117
10μF
ADJ/GND
R2
390Ω
AOZ1117
!
R2
R1
V
= V
x 1 +
REF
OUT
V
= 1.250V
REF
Figure 1.
Rev. 1.1 September 2008
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Page 1 of 8
AOZ1117
Ordering Information
Ambient
Part Number
Output Voltage
Temperature Range
Package
Environmental
AOZ1117TI-AAL
AOZ1117TI-15L
AOZ1117TI-18L
AOZ1117TI-25L
AOZ1117TI-33L
AOZ1117TI-50L
Adjustable
1.5V
1.8V
-40°C to +85°C
TO-252
Green Product
2.5V
3.3V
5.0V
• All AOS products are offered in packages with Pb-free plating and compliant to RoHS standards.
• Parts marked as Green Products (with “L” suffix) use reduced levels of Halogens, and are also RoHS compliant.
Please visit www.aosmd.com/web/quality/rohs_compliant.jsp for additional information.
Pin Configuration
Tab
Pinout:
1. Adjust/Ground
2. V
3. V
OUT
IN
2
3
1
Heat sink tab is connected to Pin 2.
TO-252
(Top View)
Pin Description
Name
I/O
Pin #
Function
Adj (GND)
I
O
I
1
A resistor divider from this pin to the Vout pin and ground sets the output voltage.
(Ground only for Fixed-Mode)
Vout
Vin
2
3
The output of the regulator. A minimum of 10uF capacitor (0.15Ω ≤ ESR ≤ 20Ω) must
be connected from this pin to ground to insure stability.
The input pin of regulator. Typically a large storage capacitor (0.15Ω ≤ ESR ≤ 20Ω) 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.
Rev. 1.1 September 2008
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Page 2 of 8
AOZ1117
Absolute Maximum Ratings
Exceeding the Absolute Maximum ratings may damage the
device.
Recommend Operating Ratings
The device is not guaranteed to operate beyond the Maximum
Operating Ratings.
Parameter
Rating
Parameter
Supply Voltage (VIN)
Rating
2.75V to +14V
0°C to +125°C
-40°C to +85°C
50°C/W
VIN to GND
-0.3V to +15V
150°C
Operating Junction Temperature (TJ)
Ambient Temperature (TA)
Maximum Junction Temperature (TJ)
Power Dissipation (PD), TA = 25°C,
TJ = 125°C, PD = (TJ – TA) / θJA
(2)
Package Thermal Resistance (ΘJA
)
No heat sink; no air flow
1050mW
1818mW
Note:
2.The package ΘJA is measured with the device mounted on 1-in2
FR-4 board with 2oz. Copper, in a still air environment with TA =
25°C. The value in any given application depends on the user’s spe-
cific board design.
Multi-layer PCB copper area
(10mm x 10mm)
Storage Temperature (TS)
ESD Rating(1)
-65°C to +150°C
±2kV
Note:
1. Devices are inherently ESD sensitive, handling precautions are
required. Human body model rating: 1.5kΩ in series with 100pF.
Block Diagram
V
V
OUT
3
2
IN
+
+
-
+
1.25V
CURRENT
LIMIT
1
1
GND (Fixed)
ADJ
+
Thermal
Shutdown
-
Rev. 1.1 September 2008
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Page 3 of 8
AOZ1117
Electrical Characteristics
Under Operating Conditions
Parameter
Device
All
AOZ1117-ADJ TJ = 25°C, (VIN-OUT) = 1.5V, IOUT = 10mA
Conditions
Min.
Typ.
Max
Unit
Operation Input Voltage
Reference Voltage
Output Voltage
2.75
14
V
V
V
V
V
V
V
%
%
1.225
1.470
1.764
2.450
3.235
4.900
1.250
1.500
1.800
2.500
3.300
5.000
0.1
1.275
1.530
1.836
2.550
3.365
5.100
0.3
AOZ1117-1.5
AOZ1117-1.8
AOZ1117-2.5
AOZ1117-3.3
AOZ1117-5.0
All
IOUT = 10mA, TJ = 25°C, 3V ≤ VIN ≤ 12V
IOUT = 10mA, TJ = 25°C, 3.3V ≤ VIN ≤ 12V
IOUT = 10mA, TJ = 25°C, 4V ≤ VIN ≤ 12V
IOUT = 10mA, TJ = 25°C, 4.8V ≤ VIN ≤ 12V
IOUT = 10mA, TJ = 25°C, 6.5V ≤ VIN ≤ 12V
VIN = VOUT+1.5V~7V, IO = 10mA, TJ = 25°C
Line Regulation(1)(2)
Load Regulation(1)(2)
VIN = VOUT+1.5V~12V, IO = 10mA, TJ =
25°C
0.1
0.5
AOZ1117-ADJ VIN = 3V, Vadj = 0,10mA < IO <1A, TJ = 25°C
1
%
AOZ1117-1.5
AOZ1117-1.8
AOZ1117-2.5
AOZ1117-3.3
AOZ1117-5.0
All
VIN = 3V, 10mA < IO < 1A, TJ = 25°C
IN = 3.3V, 10mA < IO < 1A, TJ = 25°C
12
15
20
26
40
1.3
15
18
25
33
50
1.4
mV
mV
mV
mV
mV
V
V
VIN = 4V, 10mA < IO < 1A, TJ = 25°C
VIN = 5V, 10mA ≤ IOUT ≤ 1A, TJ = 25°C
VIN = 6.5V, 10mA ≤ IOUT ≤ 1A, TJ = 25°C
IOUT = 1A, ∆VOUT = 1% VOUT
Dropout Voltage
(VIN–VOUT
)
Current Limit
All
All
All
VIN – VOUT = 3V
1. 1
A
Minimum Load Current
Ripple Rejection
0°C ≤ Tj ≤ 125°C
5
10
70
mA
dB
VIN = VOUT + 3V, f = 120Hz, COUT = 25µF
Tantalum
60
Temperature Stability
All
All
IO = 10mA
0.5
92
%
Thermal Resistance (θJA
)
Junction-to-Ambient
°C/W
(No heat sink; no air flow)
Junction-to-Ambient(4)
55
10
Thermal Resistance (θJC
)
All
Junction-to-Case
°C/W
Notes:
1. 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.
2. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the difference between
input and output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.
3. 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.
4. Output is connected to the multi-layer PCB cupper area 10mm x 10mm separately. If you need large PD or lower Tc & Tj, please connect to the
large copper area > 10mm x 10mm.
Rev. 1.1 September 2008
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AOZ1117
Typical Performance Characteristics
Dropout Voltage vs Output Current
Load Regulation vs Temperature
0.20
0
2.0
1.8
1.6
1.4
I load = 800mA
Tj = 25 oC
1.2
-0.20
-0.40
-0.80
- 1
1.0
0.8
Tj = 125 oC
0.6
0.4
0.2
0
250
Output Current (mA)
750
500
1000
0
25
50
75
100
125
-25
0
Temperature (oC)
Percent Change in Output Voltage vs Temperature
Line Regulation
2
1
1.5
1
0.8
0. 5
0
0.6
0.4
-0.5
- 1
0.2
0
-1.5
- 2
-50 -25
0
25
50
75
100 125 150
6
8
10
12
2
4
Temperature (oC)
Input Voltage (V)
Line Transient Response
Load Transient Response
7.5
6.5
30
20
C in = 1μF
Cin=1μF
Cout=10μF Tantalum
C out = 10 μF Tantalum
Preload = 100mA
10
0
5.5
40
-10
-20
2
20
0
1
-20
0
-40
-1
0
20 40 60 80 100 120 140 160 180 200
Time (μs)
20 30 40 50 60 70 80 90 100
Time (μs)
0
10
Rev. 1.1 September 2008
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Page 5 of 8
AOZ1117
Package Dimensions, TO252-3L
A
E
b2
A2
c1
L3
D
H
Optional
1
2
3
L1
e
c
.004"
b1
See Detail ‘D’
b 3 places
e1
.010"
L2
Seating Plane
Gauge Plane
See Detail ‘E’
Optional
Option 1
Option 2
L
0° to 10°
A1
DETAIL ‘D’
DETAIL ‘E’
Dimensions in millimeters
Dimensions in inches
RECOMMENDED LAND PATTERN
Symbols Min. Nom. Max.
Symbols Min. Nom. Max.
A
A1
A2
b
2.184 2.286 2.388
A
A1
A2
b
0.086 0.090 0.094
0.000
0.889
—
—
0.127
1.143
0.000
0.035
—
—
0.005
0.045
6.25 Min.
0.635 0.762 0.889
0.025 0.030 0.035
b1
b2
c
0.762
4.953
—
—
1.143
5.461
b1
b2
c
0.030
0.195
—
—
0.045
0.215
6.80 Min.
0.450 0.508 0.610
0.450 0.610
0.018 0.020 0.024
0.018 0.024
6.60
c1
D
—
c1
D
—
1.50 Min.
5.969 6.096 6.223
6.350 6.604 6.731
2.286 BSC
0.235 0.240 0.245
0.250 0.260 0.265
0.090 BSC
E
E
e
e
3.00 Min.
2.286
e1
H
4.572 BSC
e1
H
0.180 BSC
4.572 BSC
9.398
1.270
0.635
—
—
—
10.414
2.032
1.016
0.370
0.050
0.025
—
0.410
0.080
0.040
L
L
—
UNIT: mm
L1
L2
L3
L1
L2
L3
—
0.020 BSC
—
0.508 BSC
—
0.889
1.270
0.035
0.050
Notes:
1. Package body sizes exclude mold flash and gate burrs. Mold flash should be less than 6 mils.
2. Dimension L is measured in gauge plane.
3. Tolerance 0.10mm unless otherwise specified.
4. Controlling dimension is millimeter, converted inch dimensions are not necessarily exact.
5. Refer to JEDEC TO-252(AA).
Rev. 1.1 September 2008
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Page 6 of 8
AOZ1117
Tape and Reel Dimensions, TO252-3L
Carrier Tape
P1
P2
D1
E1
T
E2
E
B0
K0
A0
P0
D0
Feeding Direction
UNIT: mm
Package
A0
B0
K0
D0
D1
E
E1
E2
P0
P1
P2
T
TO-252 (DPAK) 6.90
10.50
0.10
2.70
0.10 +0.10
1.50
1.50 16.00 1.75
7.50
0.10
8.00
0.10
4.00
0.10
2.00
0.10
0.30
0.05
(16mm)
0.10
Min.
0.10
0.10
Reel
T
S
G
K
M
N
V
H
R
W
UNIT: mm
Tape Size Reel Size
M
N
W
T
H
K
S
G
R
V
16mm
ø330
ø330.00 ø99.50
0.5 1.0
17.50
0.50
2.30 ø13.50 10.60
+0.10
2.5
0.10
—
—
—
Leader / Trailer
& Orientation
Trailer Tape
300mm min.
Components Tape
Orientation in Pocket
Leader Tape
500mm min.,
or 75 empty pockets
or 125 empty pockets
Rev. 1.1 September 2008
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Page 7 of 8
AOZ1117
Part Marking
1117TI33
BA8612
Part Number Code
Underline Denotes Green Product
1
3
Alpha & Omega Semiconductor reserves the right to make changes at any time without notice.
LIFE SUPPORT POLICY
ALPHA & OMEGA SEMICONDUCTOR PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL
COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS.
As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant into
the body or (b) support or sustain life, and (c) whose
failure to perform when properly used in accordance
with instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of
the user.
2. A critical component in any component of a life
support, device, or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
Rev. 1.1 September 2008
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Page 8 of 8
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