ace1117c ACE Technology Co., LTD., ace1117c Datasheet

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ace1117c

Manufacturer Part Number
ace1117c
Description
1a Bipolar Linear Regulator
Manufacturer
ACE Technology Co., LTD.
Datasheet
Description
which can provide an output voltage from 1.25 to 13.8V with only two external resistors.
system. And it uses trimming technique to guarantee output voltage accuracy within 1.5%(1.2V version is
within 2%).Other output voltage accuracy can be customized on command, such as 1% or 2%.
Features
● Other than a fixed version and an adjustable version, ouput value can be customized on command.
● Maximum output current is 1A.
● Range of operation input voltage: Max 15V
● Line regulation: 0.2%.
● Load regulation: 0.4%.
● Environment Temperature: -40℃~85℃
Application
● Power Management for Computer Mother Board, Graphic Card
● LCD Monitor and LCD TV
● DVD Decode Board
● ADSL Modem
● Post Regulators for switching supplies
Absolute Maximum Ratings
Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.
Electrical Characteristics
Package Thermal Resistance
ACE1117C is a series of low dropout three-terminal regulators with a dropout of 1.26V at 1A load current.
Other than a fixed version (Vout=1.2V,1.8V,2.5V,2.85V,3.3V,5V) , ACE1117C has an adjustable version,
ACE1117C offers thermal shut down and current limit functions, to assure the stability of chip and power
Operating Junction Temperature
Ambient Temperature
Storage temperature
Input voltage
Parameter
Technology
SOT-223
TO-252
Symbol
V
T
T
T
IN
A
S
J
- 40 to 150
-40~85
Max
12.5
150
15
20
1A Bipolar Linear Regulator
O
Unit
C/W
O
O
O
V
C
C
C
ACE1117C
VER 1.2
1

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ace1117c Summary of contents

Page 1

... Description ACE1117C is a series of low dropout three-terminal regulators with a dropout of 1.26V at 1A load current. Other than a fixed version (Vout=1.2V,1.8V,2.5V,2.85V,3.3V,5V) , ACE1117C has an adjustable version, which can provide an output voltage from 1.25 to 13.8V with only two external resistors. ACE1117C offers thermal shut down and current limit functions, to assure the stability of chip and power system ...

Page 2

... Typical Application Application circuit of ACE1117C fixed version ACE1117C Vin Vout GND/ADJ C1 Note: Input capacitor (Cin=10uF) and output capacitor (Cout=22uF) are recommended in all application circuit. Tantalum capacitor is recommended. Packaging Type SOT-223 TO-252 Ordering information Selection Guide ACE1117C Technology C2 Rload ...

Page 3

... ACE1117C-1.2V Iout=10mA, 3.0V≦Vin≦15V ACE1117C-1.8V Iout=10mA, 3.8V≦Vin≦15V △Vout ACE1117C-2.5V Iout=10mA, 3.9V≦Vin≦15V ACE1117C-2.85V Iout=10mA, 4.25V≦Vin≦15V ACE1117C-3.3V Iout=10mA, 4.75V≦Vin≦15V ACE1117C-5V Iout=10mA, 6.5V≦Vin≦15V ACE1117C-ADJ △Vout Vin-Vout=3V, 10mA≦Iout≦1A ACE1117C-1.2V 1A Bipolar Linear Regulator Min =25℃ ...

Page 4

... Vin=3.9V, 0≦Iout≦1A ACE1117C-2.85V Vin=4.25V, 0≦Iout≦1A ACE1117C-3.3V Vin=4.75V, 0≦Iout≦1A ACE1117C-5V Vin=6.5V, 0≦Iout≦1A ACE1117C-1.2V, Vin-Vout=1.25V ACE1117C-1.8V, Vin-Vout=1.25V ACE1117C-2.5V, Vin-Vout=1.25V I Q ACE1117C-2.85V, Vin-Vout=1.25V ACE1117C-3.3V, Vin-Vout=1.25V ACE1117C-5V, Vin-Vout=1.25V I ADJ Ichange Vin-Vout=2V, T ...

Page 5

... Block Diagram Detailed Description ACE1117C 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 composed of some modules including start-up circuit, bias circuit, bandgap, thermal shutdown, current limit, power transistors and its driver circuit and so on ...

Page 6

... Application Hints The typical Linear regulator would require external capacitors to ensure stability. However, ACE1117C is designed in such a way that these external capacitor can be omitted if the PCB layout is tight and system noise is not very high. For better transient and PSRR performance, the Input and Output capacitors are still recommended.  ...

Page 7

... Thermal Considerations We have to take heat dissipation into consideration when output current or differential voltage of input and output voltage is large. Because in such cases, the power dissipation consumed by ACE1117C is very large. ACE1117C series uses SOT-223 package type and its thermal resistance is about 20℃/W. And the copper area of application board can affect the total thermal resistance. If copper area is 5cm*5cm( ...

Page 8

... Adj Pin Current vs. Temperature Technology 6.ACE1117C Load Transient Response ACE1117C 1A Bipolar Linear Regulator VER 1.2 8 ...

Page 9

... Packing Information SOT-223 Technology ACE1117C 1A Bipolar Linear Regulator VER 1.2 9 ...

Page 10

... Packing Information TO-252 Technology ACE1117C 1A Bipolar Linear Regulator VER 1.2 10 ...

Page 11

... A critical component is 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 affect its safety or effectiveness. Technology Notes ACE Technology Co., LTD. http://www.ace-ele.com/ ACE1117C 1A Bipolar Linear Regulator VER 1.2 11 ...

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