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부품번호 | ACE1085 기능 |
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기능 | 3A Low Dropout Linear Regulator | ||
제조업체 | ACE Technology | ||
로고 | |||
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ACE1085
Technology
3A Low Dropout Linear Regulator
Description
ACE1085 is a series of low dropout three terminal regulators with a dropout of 1.3V at 3A load current.
Other than a fixed version (Vout=1.8V,2.5V,3.3V,5.0V), ACE1085 has an adjustable version, The
adjustable version can set the output voltage with two external resistors.
ACE1085 offers thermal shut down and current limit functions, to assure the stability of chip and power
system. And it uses trimming technique to guarantee output voltage accuracy within ±2%.
The ACE1085 series is available in standard packages of TO-263-2L, TO-263-3L, TO-220 and TO-252.
Features
● Other than a fixed version and an adjustable version, output value can be customized on command.
● Maximum output current is 3A
● Output voltage accuracy is within ±2% (±1% Customized)
● Range of operation input voltage: Max 18V
● Line regulation: 0.2% (Typical)
● Load regulation: 0.2% (Typical)
● Environment Temperature: -50℃~140℃
Application
● Power Management for Computer Mother Board, Graphic Card
● Battery Charger
● Post Regulators for Switching Supplies
● Microprocessor Supply
Absolute Maximum Ratings
Parameter
Symbol Max Unit
Input voltage
VIN 18 V
Junction temperature
TJ
150 OC
Environment Temperature TA
140 OC
Storage temperature
TS - 65 to 150 OC
Packaging Type
TO-220
TO-263-3L
TO-263-2L
TO-252
123
123
123
123
VER 1.2 1
www.DataSheet4U.com
ACE1085
Technology
3A Low Dropout Linear Regulator
Thermal
Resistance
junction to case
θJC
TO-252
TO-263
TO-220
12.5
3
3
℃
/W
Note1:The Parameters of Line Regulation and Load Regulation in Table1 are tested under constant junction temperature.
Note2:When Iout varies between 0~3A,Vin-Vout varies between 1.5V~6V under constant junction temperature, the parameter is
satisfied the criterion in table. If temperature varies between -50℃≤TA≤140℃,it needs output current to be larger than 10mA to
satisfy the criterion.
Note3:Dropout Voltage is tested under Iout=3A and the following testing conditions: First step is to find out the Vout
value(Vout1) when Vin1=Vout+1.5V, second step is to decrease Vin(Vin2) until Vout value is equal to 99%*Vout1(Vout2).
Vdropout=Vin2-Vout2.
Note4:Minimum Load Current is defined as the minimum output current required to maintain regulation.
When 1.5V≦Vin-Vout≦6V,the device is guaranteed to regulate if the output current is greater than 10mA.
Detailed Description
ACE1085 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 and current limit modules can assure chip and its application system working
safety when the environment temperature is larger than 140℃ or output current is larger than 3.2A.
The bandgap module provides stable reference voltage, whose temperature coefficient is compensated
by careful design considerations. The temperature coefficient is under 100ppm/℃.And the accuracy of
output voltage is guaranteed by trimming technique.
Typical Application Circuit
ACE1085 has an adjustable version and fixed versions, Chart 1 is its typical application.
Vin
10uF
Tan
ACE1085
Vin Vout
ADJ
125 ohm
R1
R2
Vout
22uF
Tan
Vout=Vref * (1+R2/R1)+Iadj * R2
VER 1.2 4
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ACE1085
Technology
3A Low Dropout Linear Regulator
Packing Information
TO-252
VER 1.2 7
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부품번호 | 상세설명 및 기능 | 제조사 |
ACE1085 | 3A Low Dropout Linear Regulator | ACE Technology |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |