ACE1117C
1A Bipolar Linear Regulator
Description
ACE1117C is a series of low dropout three-terminal regulators with a dropout of 1.3V at 1A load current.
ACE1117C features a very low standby current 2mA compared to 5mA of competitor.
Other than a fixed version Vout＝1.2V,1.8V,2.5V,2.85V,3.3V,5V and 12V, ACE1117C has an adjustable
version, which can provide an output voltage from 1.25 to 12V with only two external resistors.
ACE1117C 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%.Other output
voltage accuracy can be customized on command, such as ±1%.
Features
● Other than a fixed version and an adjustable version, output value can be customized on command.
● Maximum output current is 1A.
● Range of operation input voltage: Max 12V
● Standby current: 2mA (typ.)
● Line regulation: 0.1% (typ.)
● Load regulation: 10Mv (typ.)
● Environment Temperature: -20℃~85℃
● Compatible with tantalum capacitor, electrolytic capacitor
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
Parameter
Input voltage
Operating Junction Temperature
Ambient Temperature
Package Thermal Resistance
Storage temperature
SOT-223
TO-252
T
S
Symbol
V
IN
T
J
T
A
Max
15
150
-40~85
20
12.5
- 40 to 150
O
Unit
V
O
O
C
C
C/W
O
C
Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.
VER 1.3
1
ACE1117C
1A Bipolar Linear Regulator
Typical Electrical Characteristics
ACE1117C-ADJ Vout vs. Temp
Temperature (℃)
Typical Application
Application circuit of ACE1117C fixed version
ACE1117C
Packaging Type
SOT-223
TO-252
SOT-223 / TO-252
1
2
3
1
2
3
1
2
3
Description
ADJ/GND
Vout
Vin
VER 1.3
2
ACE1117C
1A Bipolar Linear Regulator
Ordering information
ACE1117C XX XX
+ H
Halogen - free
Pb - free
XM : SOT-223
YM : TO-252
Output Voltage : 1.2 / 1.8V ….. / Default: Adjustable Version
Electrical Characteristics
Parameter
Symbol
Test Conditions
ACE1117C-1.2V
0≦Iout≦1A, Vin=3.2V
ACE1117C-1.8V
0≦Iout≦1A, Vin=3.8V
ACE1117C-2.5V
Output Voltage
Vout
0≦Iout≦1A, Vin=4.5V
ACE1117C-3.3V
0≦Iout≦1A, Vin=5.3V
ACE1117C-5.0V
0≦Iout≦1A, Vin=7.0V
ACE1117C-12.0V
0≦Iout≦1A, Vin=14V
Reference Voltage
V
REF
ACE1117C-ADJ
10mA≦Iout≦1A, Vin=3.25V
ACE1117C-ADJ
Iout=10mA, 2.75V≦Vin≦12V
ACE1117C-1.2V
Iout=10mA, 2.7V≦Vin≦10V
ACE1117C-1.8V
Iout=10mA, 3.3V≦Vin≦12V
Line Regulation
△Vout
ACE1117C-2.5V
Iout=10mA, 4.0V≦Vin≦12V
ACE1117C-3.3V
Iout=10mA, 4.8V≦Vin≦12V
ACE1117C-5.0V
Iout=10mA, 6.5V≦Vin≦12V
ACE1117C-12.0V
Iout=10mA, 13.5V≦Vin≦20V
Min
1.176
1.764
2.45
3.234
4.9
11.76
1.225
Typ
1.20
1.80
2.5
3.3
5
12
1.25
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Mum
1.224
1.836
2.55
Unit
V
3.366
5.1
12.24
1.275
0.2
0.2
0.2
0.2
0.2
0.2
0.2
%/V
V
VER 1.3
3
ACE1117C
1A Bipolar Linear Regulator
ACE1117C-ADJ
Vin=2.75V, 10mA≦Iout≦1A
ACE1117C-1.2V
Vin=2.7V, 10mA≦Iout≦1A
ACE1117C-1.8V
Vin=3.3V, 10mA≦Iout≦1A
Load Regulation
△Vout
ACE1117C-2.5V
Vin=4.0V, 10mA≦Iout≦1A
ACE1117C-3.3V
Vin=4.8V, 10mA≦Iout≦1A
ACE1117C-5.0V
Vin=6.5V, 10mA≦Iout≦1A
ACE1117C-12.0V
Vin=13.5V, 10mA≦Iout≦1A
ACE1117C-1.2V, Vin=10V
ACE1117C-1.8V, Vin=12V
Quiescent Current
I
Q
ACE1117C-2.5V, Vin=12V
ACE1117C-3.3V, Vin=12V
ACE1117C-5.0V, Vin=12V
ACE1117C-12.0V, Vin=20V
Adjust Pin Current
Iadj change
Current Limit
Minimum load Current
Temperature coefficient
Vdrop
I
ADJ
Ichange
llimit
lmin
△V/△T
Dropout voltage
ΘJC
Iout=100mA
Iout=1A
SOT-223
TO-252
ACE1117C-ADJ Vin=5V,
10mA≦Iout≦1A
ACE1117C-ADJ Vin=5V,
10mA≦Iout≦1A
Vin-Vout=2V, T
J
=25℃
ACE1117C-ADJ
1
2
±100
1.23
1.3
20
10
1.3
1.5
10
10
10
10
10
10
10
10
2
2
2
2
2
2
55
0.2
30
30
30
30
30
30
30
5
5
5
5
5
5
120
10
uA
uA
A
mA
ppm
V
V
℃/W
mA
mV
Thermal Resistance
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 ACE1117C-ADJ will lead to unstable or oscillation output.
VER 1.3
4
ACE1117C
1A Bipolar Linear Regulator
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. 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℃.
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.
VER 1.3
5
