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1A Low Dropout Linear Regulator
AOZ1117
General Description
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 applications such as VGA cards. The AOZ1117 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 2.75V to 14V input supply.
Features

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 Fixed Output Example
VIN + 5V
VIN + 5V
3 2
Adjustable Output Example Adjustable Output Example
V + 5V VININ + 5V
3
3 IN VIN
= 3.3V V = 3.3V VOUT OUT VIN V2 OUT
VOUT = 3.3V VOUT = 3.3V V
VOUT OUT
ADJ/GND
V
2
2 1
3
C1 10F
VIN C1 10F
VOUT
1
AOZ1117
ADJ/GND AOZ1117
ADJ/GND 1
1
C2 C2 10F
10F
C1 10F C1
10F
AOZ1117
ADJ/GND AOZ1117
R1 240 R1 R2 390 R2
240
C2 10F C2
10F
390
VOUT = VREF x 1 +
R2 R1
VREF = VREF VOUT = 1.250Vx 1 +
R2 R1
VREF = 1.250V
Figure 1.
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AOZ1117
Ordering Information
Part Number
AOZ1117TI-AAL AOZ1117TI-15L AOZ1117TI-18L AOZ1117TI-25L AOZ1117TI-33L AOZ1117TI-50L
Output Voltage
Adjustable 1.5V 1.8V 2.5V 3.3V 5.0V
Ambient Temperature Range
Package
Environmental
-40C to +85C
TO-252
Green Product
* 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. VOUT 3. VIN Heat sink tab is connected to Pin 2.
2 1 3
TO-252
(Top View)
Pin Description
Name
Adj (GND) Vout Vin
I/O
I O I
Pin #
1 2 3
Function
A resistor divider from this pin to the Vout pin and ground sets the output voltage. (Ground only for Fixed-Mode) The output of the regulator. A minimum of 10uF capacitor (0.15 ESR 20) must be connected from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor (0.15 ESR 20) 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.
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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
VIN to GND Maximum Junction Temperature (TJ) Power Dissipation (PD), TA = 25C, TJ = 125C, PD = (TJ - TA) / JA No heat sink; no air flow Multi-layer PCB copper area (10mm x 10mm) Storage Temperature (TS) ESD Rating(1)
Rating
-0.3V to +15V 150C
Parameter
Supply Voltage (VIN) Operating Junction Temperature (TJ) Ambient Temperature (TA) Package Thermal Resistance (JA)(2)
Rating
2.75V to +14V 0C to +125C -40C to +85C 50C/W
1050mW 1818mW -65C to +150C 2kV
Note:
2.The package JA is measured with the device mounted on 1-in2
FR-4 board with 2oz. Copper, in a still air environment with TA = 25C. The value in any given application depends on the user's specific board design.
Note: 1. Devices are inherently ESD sensitive, handling precautions are required. Human body model rating: 1.5k in series with 100pF.
Block Diagram
VIN
3
2
VOUT
+ + CURRENT LIMIT + Thermal Shutdown 1 1.25V + 1 GND (Fixed)
ADJ
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AOZ1117
Electrical Characteristics
Under Operating Conditions
Parameter
Operation Input Voltage Reference Voltage Output Voltage
Device
All AOZ1117-ADJ AOZ1117-1.5 AOZ1117-1.8 AOZ1117-2.5 AOZ1117-3.3 AOZ1117-5.0
Conditions
TJ = 25C, (VIN-OUT) = 1.5V, IOUT = 10mA IOUT = 10mA, TJ = 25C, 3V VIN 12V IOUT = 10mA, TJ = 25C, 3.3V VIN 12V IOUT = 10mA, TJ = 25C, 4V VIN 12V IOUT = 10mA, TJ = 25C, 4.8V VIN 12V IOUT = 10mA, TJ = 25C, 6.5V VIN 12V VIN = VOUT+1.5V~7V, IO = 10mA, TJ = 25C VIN = VOUT+1.5V~12V, IO = 10mA, TJ = 25C
Min.
2.75 1.225 1.470 1.764 2.450 3.235 4.900
Typ.
1.250 1.500 1.800 2.500 3.300 5.000 0.1 0.1
Max
14 1.275 1.530 1.836 2.550 3.365 5.100 0.3 0.5 1
Unit
V V V V V V V % % % mV mV mV mV mV V A
Line Regulation(1)(2)
All
Load Regulation(1)(2)
AOZ1117-ADJ AOZ1117-1.5 AOZ1117-1.8 AOZ1117-2.5 AOZ1117-3.3 AOZ1117-5.0
VIN = 3V, Vadj = 0,10mA < IO <1A, TJ = 25C VIN = 3V, 10mA < IO < 1A, TJ = 25C VIN = 3.3V, 10mA < IO < 1A, TJ = 25C VIN = 4V, 10mA < IO < 1A, TJ = 25C VIN = 5V, 10mA IOUT 1A, TJ = 25C VIN = 6.5V, 10mA IOUT 1A, TJ = 25C IOUT = 1A, VOUT = 1% VOUT VIN - VOUT = 3V 0C Tj 125C VIN = VOUT + 3V, f = 120Hz, COUT = 25F Tantalum IO = 10mA Junction-to-Ambient (No heat sink; no air flow) Junction-to-Ambient(4) Junction-to-Case 1. 1 5 60 0.5 92 55 10 12 15 20 26 40 1.3
15 18 25 33 50 1.4
Dropout Voltage (VIN-VOUT) Current Limit Minimum Load Current Ripple Rejection Temperature Stability Thermal Resistance (JA )
All All All All All All
10 70
mA dB % C/W
Thermal Resistance (JC)
Notes:
All
C/W
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.
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AOZ1117
Typical Performance Characteristics
Dropout Voltage vs Output Current
2.0 1.8 0.20
Load Regulation vs Temperature
Output Voltage Deviation (%)
1.6
0 I load = 800mA -0.20
Dropout Voltage (V)
1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 0 250 500 750 1000 Tj = 125 oC Tj = 25 oC
-0.40
-0.80
-1 -25 0 25 50 75 100 125
Output Current (mA)
Temperature (oC)
Percent Change in Output Voltage vs Temperature
2 1
Line Regulation
Output Voltage Deviation (%)
Output Voltage Change (%)
1.5 1 0. 5 0 -0.5 -1 -1.5 -2 -50 -25 0 25 50
o
0.8
0.6
0.4
0.2
75
100
125
150
0
2
4
6
8
10
12
Temperature ( C)
Input Voltage (V)
Output Voltage Deviation (mV) Input Voltage (V)
Line Transient Response
7.5 6.5 5.5 40 20 0 -20 -40 0 20 40 60 80 100 120 140 160 180 200 Cin=1F Cout=10F Tantalum Output Voltage Deviation (mV) 30 20 10 0 -10 -20 2 1 0 -1 0 10
Load Transient Response
C in = 1F C out = 10 F Tantalum Preload = 100mA
Load Current (A)
20
30
40
50
60
70
80
90
100
Time (s)
Time (s )
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AOZ1117
Package Dimensions, TO252-3L
E b2 L3 A A2 c1
D Optional
1 2 3
H
L1 e e1 b1 b 3 places
.010"
c
.004"
See Detail `D'
Gauge Plane
L2 Seating Plane
See Detail `E' Optional
L 0 to 10 A1
Option 1
Option 2
DETAIL `E'
DETAIL `D'
Dimensions in millimeters
RECOMMENDED LAND PATTERN
Symbols A A1 A2 b b1 b2 c c1 D E e e1 H L L1 L2 Min. 2.184 0.000 0.889 0.635 0.762 4.953 0.450 0.450 5.969 6.350 Nom. 2.286 -- -- 0.762 -- -- 0.508 -- 6.096 Max. 2.388 0.127 1.143 0.889 1.143 5.461 0.610 0.610 6.223
Dimensions in inches
Symbols A A1 A2 b b1 b2 c c1 D E e e1 H L L1 L2 Min. 0.086 0.000 0.035 0.025 0.030 0.195 0.018 0.018 0.235 0.250 Nom. 0.090 -- -- 0.030 -- -- 0.020 -- 0.240 Max. 0.094 0.005 0.045 0.035 0.045 0.215 0.024 0.024 0.245
6.25 Min.
6.80 Min. 6.60 1.50 Min.
2.286
3.00 Min. 4.572 BSC
UNIT: mm
6.604 6.731 2.286 BSC 4.572 BSC 9.398 -- 10.414 1.270 -- 2.032 0.635 -- 1.016 0.508 BSC
0.260 0.265 0.090 BSC 0.180 BSC 0.370 -- 0.410 0.050 -- 0.080 0.025 -- 0.040 0.020 BSC 0.035 -- 0.050
L3 0.889 -- 1.270 L3 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).
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AOZ1117
Tape and Reel Dimensions, TO252-3L
Carrier Tape
T D1 P2 P1 E1
E2 B0 E
K0 A0 D0 P0 Feeding Direction
UNIT: mm
Package
A0
B0 10.50 0.10
K0 2.70 0.10
D0 1.50 +0.10
D1 1.50 Min.
E 16.00 0.10
E1 1.75 0.10
E2 7.50 0.10
P0 8.00 0.10
P1 4.00 0.10
P2 2.00 0.10
T 0.30 0.05
TO-252 (DPAK) 6.90 (16mm) 0.10
Reel
T
S G M V N K
R
H
UNIT: mm
W
W 17.50 0.50 T H 2.30 o13.50 +0.10 K 10.60 S 2.5 0.10 G -- R -- V --
Tape Size Reel Size M N 16mm o330 o330.00 o99.50 0.5 1.0
Leader / Trailer & Orientation
Trailer Tape 300mm min. or 75 empty pockets
Components Tape Orientation in Pocket
Leader Tape 500mm min., or 125 empty pockets
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AOZ1117
Part Marking
1 1 1 7 T I 33
Part Number Code Underline Denotes Green Product
BA8612
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.
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