A1116K3R-12 [AITSEMI]
BIPOLAR LDO REGULATOR 800mA LINEAR LOW DROPOUT REGULATOR;型号: | A1116K3R-12 |
厂家: | AiT Semiconductor |
描述: | BIPOLAR LDO REGULATOR 800mA LINEAR LOW DROPOUT REGULATOR |
文件: | 总9页 (文件大小:291K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
A1116
BIPOLAR LDO REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
800mA LINEAR LOW DROPOUT REGULATOR
DESCRIPTION
FEATURES
A1116 is a series of low dropout three-terminal
regulators with a typical dropout of 1.3V at 800mA.
⚫
⚫
⚫
⚫
⚫
⚫
Maximum output current is 800mA
Range of operation input voltage: Max 18V
Line regulation: 0.1%/V (typ.)
Besides fixed voltage version (VOUT = 1.2V, 1.5, 1.8V,
2.5V, 3.3V, 5V, 12V), A1116 has an adjustable
version that can provide an output voltage from 1.25
to 12V with two external resistors.
Load regulation: 10mV (typ.)
Environment Temperature: -40°C ~85°C
Available in SOT89-3 package
APPLICATION
A1116 offers thermal shut down functions to assure
stability of chip and power system. Trimming
technique is used to guarantee output voltage
accuracy within 2%.
⚫
⚫
⚫
⚫
⚫
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DVB
Computer Mother Board, Graphic Card
LCD Monitor and LCD TV
DVD Decode Board
The A1116 is available in SOT89-3 package.
ADSL Modem
Post Regulators for Switching Supplies
ORDERING INFORMATION
TYPICAL APPLICATION
Package Type
SOT89-3
SPQ: 1,000pcs/Reel
Part Number
A1116K3R-XX
A1116K3VR-XX
K3
XX: Output Voltage,
12=1.2V, 18=1.8V,
ADJ: Adjustable
Note
V: Halogen free Package
R: Tape & Reel
AiT provides all RoHS products
Application circuit of A1116 fixed version
REV1.1
- JUL 2018 RELEASED, NOV 2018 UPDATED-
- 1 -
A1116
BIPOLAR LDO REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
800mA LINEAR LOW DROPOUT REGULATOR
PIN DESCIPTION
Top View
Top View
Pin #
A1116-XX
GND
A1116-ADJ
1
2
3
ADJ
VOUT
VIN
VOUT
VIN
ABSOLUTE MAXIMUM RATINGS
Max Input Voltage
18V
150°C
TJ, Max Operating Junction Temperature
TA, Ambient Temperature
Power Dissipation SOT89-3
TS, Storage Temperature
Lead Temperature & Time
-40°C ~ 85°C
500mW
-40°C ~ 150°C
260°C, 10s
Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and
operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED WORKING CONDITIONS
Parameter
Input Voltage Range
Operating Junction Temperature
Symbol
TJ
Value
Units
V
Max. 16
-40 ~ 85
°C
REV1.1
- JUL 2018 RELEASED, NOV 2018 UPDATED-
- 2 -
A1116
BIPOLAR LDO REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
800mA LINEAR LOW DROPOUT REGULATOR
ELECTRICAL CHARACTERISTICS
TJ = 25°C
Parameter
Reference Voltage
Symbol
VREF
Conditions
Min.
1.225
1.176
1.764
2.45
Typ.
1.25
1.2
1.8
2.5
Max.
1.275
1.224
1.836
2.55
Unit
V
10mA≤IOUT≤800mA , VIN=3.25V
0≤IOUT≤800mA, VIN=3.2V
0≤IOUT≤800mA , VIN=3.8V
0≤IOUT≤800mA , VIN=4.5V
ADJ
1.2V
1.8V
2.5V
Output Voltage
Line Regulation
VOUT
V
0≤IOUT≤800mA , VIN=5.3V
3.3V
5.0V
3.234
4.9
12.0V 11.76
ADJ
3.3
3.366
5.1
12.24
0≤IOUT≤800mA , VIN=7.0V
0≤IOUT≤800mA , VIN=14V
IOUT=10mA, 2.75V≤VIN≤15V
IOUT=10mA, 2.7V≤VIN≤15V
IOUT=10mA, 3.3V≤VIN≤15V
IOUT=10mA, 4.0V≤VIN≤15V
IOUT=10mA, 4.8V≤VIN≤15V
5
12
1.2V
1.8V
2.5V
3.3V
5.0V
ΔVOUT
-
-
0.1
0.2
%/V
IOUT=10mA, 6.5V≤VIN≤15V
IOUT=10mA, 13.5V≤VIN≤18V
VIN =2.75V, 10mA≤IOUT≤800mA
VIN =2.7V, 10mA≤IOUT≤800mA
VIN=3.3V, 10mA≤IOUT≤800mA
12.0V
ADJ
1.2V
1.8V
2.5V
3.3V
5.0V
12.0V
Load Regulation
Dropout Voltage
ΔVOUT VIN=4.0V, 10mA≤IOUT≤800mA
VIN=4.8V, 10mA≤IOUT≤800mA
VIN=6.5V, 10mA≤IOUT≤800mA
VIN=13.5V, 10mA≤IOUT≤800mA
10
30
mV
IOUT=100mA
IOUT=800mA
VIN-VOUT=2V, TJ=25°C
-
-
1.23
1.3
-
1.3
1.5
-
VDROP
V
Current Limit
Minimum Load
Current
Ilimit
Imin
800
mA
mA
ADJ
-
2
10
VIN =10V
VIN =12V
VIN =12V
VIN =12V
VIN =12V
VIN =18V
VIN =5V, 10mA≤IOUT≤800mA
1.2V
1.8V
2.5V
3.3V
5.0V
12.0V
ADJ
Quiescent
Current
IQ
-
2
5
mA
Adjust Pin Current
IADJ change
IADJ
-
-
55
0.2
120
10
μA
μA
ICHANGE VIN =5V, 10mA≤IOUT≤800mA
ADJ
Temperature
Coefficient
ΔV/ΔT
-
±100
-
-
ppm
Thermal Resistor
θJC
SOT89-3
-
70
oC/W
NOTE1: All test are conducted under ambient temperature 25°C and within a short period of time 20ms
NOTE2: Load current smaller than minimum load current of A1116-ADJ will lead to unstable or oscillation output.
REV1.1
- JUL 2018 RELEASED, NOV 2018 UPDATED-
- 3 -
A1116
BIPOLAR LDO REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
800mA LINEAR LOW DROPOUT REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS
T=25°C, unless specified.
1.
Line Regulation
2.
Load Regulation
A1116-ADJ VOUT Vs. IOUT
A1116-ADJ VOUT Vs. VIN
3.
Dropout Voltage
A1116-ADJ Dropout Vs. IOUT
4.
Thermal performance with OTP
A1116-ADJ VOUT Vs. Temp
REV1.1
- JUL 2018 RELEASED, NOV 2018 UPDATED-
- 4 -
A1116
BIPOLAR LDO REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
800mA LINEAR LOW DROPOUT REGULATOR
BLOCK DIAGRAM
REV1.1
- JUL 2018 RELEASED, NOV 2018 UPDATED-
- 5 -
A1116
BIPOLAR LDO REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
800mA LINEAR LOW DROPOUT REGULATOR
DETAILED DESCRIPTION
A1116 is a series of low dropout voltage, three terminal regulators. Its application circuit is very simple: the
fixed version only needs two capacitors and the adjustable version only needs two resistors and two
capacitors to work. It is composed of some modules including start-up circuit, bias circuit, bandgap, thermal
shutdown, current limit, power transistors and its driver circuit and so on.
The thermal shut down modules can assure chip and its application system working safety when the junction
temperature is larger than 140°C.
The bandgap module provides stable reference voltage, whose temperature coefficient is compensated by
careful design considerations. The temperature coefficient is under 100 ppm/°C. And the accuracy of output
voltage is guaranteed by trimming technique.
TYPICAL APPLICATION
A1116 has an adjustable version and fixed versions (1.2V, 1.8V, 2.5V, 3.3V, 5V and 12V)
Fixed Output Voltage Version
Application circuit of A1116 fixed version
1.
2.
Recommend using 10uF tan capacitor as bypass capacitor (C1) for all application circuit.
Recommend using 10uF tan capacitor to assure circuit stability.
Adjustable Output Voltage Version
A1116-ADJ provides a 1.25V reference voltage. Any output voltage between 1.25V~12V can be achievable
REV1.1
- JUL 2018 RELEASED, NOV 2018 UPDATED-
- 6 -
A1116
BIPOLAR LDO REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
800mA LINEAR LOW DROPOUT REGULATOR
by choosing two external resistors (schematic is shown below), R1 and R2
Application Circuit of A1116-ADJ
The output voltage of adjustable version follows the equation: VOUT =1.25 x (1+R2/R1) + IADJ x R2. We can
ignore IADJ because IADJ (about 50uA) is much less than the current of R1 (about 2~10mA).
1.
To meet the minimum load current (>10mA) requirement, R1 is recommended to be 125ohm or lower.
As A1116-ADJ can keep itself stable at load current about 2mA, R1 is not allowed to be higher than
625ohm.
2.
Using a bypass capacitor (CADJ) between the ADJ pin and ground can improve ripple rejection. This
bypass capacitor prevents ripple from being amplified as the output voltage is increased. The
impedance of CADJ should be less than R1 to prevent ripple from being amplified. As R1 is normally in
the range of 100Ω~500Ω, the value of CADJ should satisfy this equation: 1/(2 x fripple x CADJ)<R1.
THERMAL CONSIDERATIONS
We have to take heat dissipation into great consideration when output current or differential voltage of input
and output voltage is large. Because in such cases, the power dissipation consumed by A1116 is very large.
A1116 series uses SOT89-3 package type and its thermal resistance is about 70°C/W. And the copper area
of application board can affect the total thermal resistance. For Example, If copper area is 5cm*5cm (two
sides), the resistance is about 30°C/W. So the total thermal resistance is about 70°C/W + 30°C/W. We can
decrease total thermal resistance by increasing copper area in application board. When there is no good heat
dissipation copper are in PCB, the total thermal resistance will be as high as 120°C/W, then the power
dissipation of A1116 could allow on itself is less than 1W. And furthermore, A1116 will work at junction
temperature higher than 125°C under such condition and no lifetime is guaranteed.
REV1.1
- JUL 2018 RELEASED, NOV 2018 UPDATED-
- 7 -
A1116
BIPOLAR LDO REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
800mA LINEAR LOW DROPOUT REGULATOR
PACKAGE INFORMATION
Dimension in SOT89-3 (Unit: mm)
REV1.1
- JUL 2018 RELEASED, NOV 2018 UPDATED-
- 8 -
A1116
BIPOLAR LDO REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
800mA LINEAR LOW DROPOUT REGULATOR
IMPORTANT NOTICE
AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to
discontinue any integrated circuit product or service without notice, and advises its customers to obtain the
latest version of relevant information to verify, before placing orders, that the information being relied on is
current.
AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to
be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT
products in such applications is understood to be fully at the risk of the customer. As used herein may involve
potential risks of death, personal injury, or servere property, or environmental damage. In order to minimize
risks associated with the customer's applications, the customer should provide adequate design and
operating safeguards.
AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT
warrants the performance of its products of the specifications applicable at the time of sale.
REV1.1
- JUL 2018 RELEASED, NOV 2018 UPDATED-
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