ACE1117H

ACE1117H
1A Bipolar Linear Regulator
Description
ACE1117H is a series of low dropout three-terminal regulators with a dropout of 1.3V at 1A load current.
ACE1117H features a low standby current 2mA.
Other than a fixed version (Vout = 1.2V, 1.8V, 2.5V, 3.3V, 5V, and 12V), ACE1117H has an adjustable
version, which can provide an output voltage from 1.25 to 12V with only two external resistors.
ACE1117H offers thermal shut down and current limit functions, to assure stability of chip and power
system. Trimming technique is used to guarantee output voltage accuracy within ±2%. Other output
voltage accuracy such as ±1% can be customized on demand.
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 18V
● Standby current: 2mA (typ.)
● Line regulation: 0.1% (typ.)
● Load regulation: 10mV (typ.)
● Environment Temperature: -20℃~85℃
● Compatible with tantalum capacitor, electrolytic capacitor and MLCC
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
Symbol
Max
Input voltage
VIN
18
Operating Junction Temperature
Ambient Temperature
Package Thermal Resistance
Storage temperature
TJ
TA
V
150
O
C
-40~85
O
C
SOT-223
20
TO-252
12.5
TS
Unit
- 40 to 150
O
C/W
O
C
Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.
VER 1.2
1
ACE1117H
1A Bipolar Linear Regulator
Typical Electrical Characteristics
ACE1117H-ADJ Vout vs. Temp
Typical Application
Application circuit of ACE1117H fixed version
ACE1117H
Packaging Type
SOT-223
1
2
TO-252
3
1
2
SOT-223 / TO-252
Description
1
Vss/ADJ
2
Vout
3
Vin
3
Recommended work conditions
Parameter
Value
Input Voltage Range
Max. 16V (1)
Operating Junction Temperature (TJ) -20 ~ 125 OC
Note 1. Exceptional for ACE1117H-12V, the maximum input voltage for ACE1117H-12V is 20V.
VER 1.2
2
ACE1117H
1A Bipolar Linear Regulator
Ordering information
ACE1117H 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
(TJ=25℃)
Symbol
Test Conditions
ACE1117H-1.2V
0≦Iout≦1A, Vin=3.2V
ACE1117H-1.8V
0≦Iout≦1A, Vin=3.8V
ACE1117H-2.5V
Output Voltage
Vout
0≦Iout≦1A, Vin=4.5V
ACE1117H-3.3V
0≦Iout≦1A, Vin=5.3V
ACE1117H-5.0V
0≦Iout≦1A, Vin=7.0V
ACE1117H-12.0V
0≦Iout≦1A, Vin=14V
Reference Voltage
VREF
ACE1117H-ADJ
10mA≦Iout≦1A, Vin=3.25V
ACE1117H-ADJ
Iout=10mA, 2.75V≦Vin≦16V
ACE1117H-1.2V
Iout=10mA, 2.7V≦Vin≦15V
ACE1117H-1.8V
Iout=10mA, 3.3V≦Vin≦16V
Line Regulation
△Vout
ACE1117H-2.5V
Iout=10mA, 4.0V≦Vin≦16V
ACE1117H-3.3V
Iout=10mA, 4.8V≦Vin≦16V
ACE1117H-5.0V
Iout=10mA, 6.5V≦Vin≦16V
ACE1117H-12.0V
Iout=10mA, 13.5V≦Vin≦20V
Load Regulation
△Vout
ACE1117H-ADJ
Vin=2.7V, 10mA≦Iout≦1A
Min
Typ
Max
1.176
1.20
1.224
1.764
1.80
1.836
2.45
2.5
2.55
Unit
V
3.234
3.3
3.366
4.9
5
5.1
11.76
12
12.24
1.225
1.25
1.275
0.1
0.2
0.1
0.2
0.1
0.2
0.1
0.2
0.1
0.2
0.1
0.2
0.1
0.2
10
30
V
%/V
VER 1.2
mV
3
ACE1117H
1A Bipolar Linear Regulator
ACE1117H-1.2V
10
30
10
30
10
30
10
30
10
30
10
30
ACE1117H-1.2V, Vin=10V
2
5
ACE1117H-1.8V, Vin=12V
2
5
ACE1117H-2.5V, Vin=12V
2
5
ACE1117H-3.3V, Vin=12V
2
5
ACE1117H-5.0V, Vin=12V
2
5
ACE1117H-12.0V, Vin=20V
2
5
55
120
uA
0.2
10
uA
Vin=2.75V, 10mA≦Iout≦1A
ACE1117H-1.8V
Vin=3.3V, 10mA≦Iout≦1A
ACE1117H-2.5V
Vin=4.0V, 10mA≦Iout≦1A
ACE1117H-3.3V
Vin=4.8V, 10mA≦Iout≦1A
ACE1117H-5.0V
Vin=6.5V, 10mA≦Iout≦1A
ACE1117H-12.0V
Vin=13.5V, 10mA≦Iout≦1A
Quiescent Current
IQ
ACE1117H-ADJ Vin=5V,
Adjust Pin Current
IADJ
Iadj change
Ichange
Current Limit
llimit
Vin-Vout=2V, TJ=25℃
Minimum load Current
lmin
ACE1117H-ADJ
Temperature coefficient
△V/△T
Vdrop
Dropout voltage
Thermal Resistance
ΘJC
10mA≦Iout≦1A
ACE1117H-ADJ Vin=5V,
10mA≦Iout≦1A
mA
1
A
2
10
±100
mA
ppm
Iout=100mA
1.23
1.3
V
Iout=1A
1.3
1.5
V
SOT-223
20
TO-252
10
℃/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 ACE1117H-ADJ will lead to unstable or oscillation output.
VER 1.2
4
ACE1117H
1A Bipolar Linear Regulator
Block Diagram
Detailed Description
ACE1117H 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 1.2
5
ACE1117H
1A Bipolar Linear Regulator
Typical Application
ACE1117H has an adjustable version and six fixed versions (1.2V, 1.8V, 2.5V, 3.3V, 5.0V and 12V)
Fixed output voltage version
ACE1117H
Application circuit of ACE1117H fixed version
1. Recommend using 10uF tan capacitor as bypass capacitor (C1) for all application circuit.
2. Recommend using 10uF tan capacitor to assure circuit stability.
Adjustable Output Voltage Version
ACE1117H provides a 1.25V reference voltage. Any output voltage between 1.25V~12V can be
achievable by choosing two external resistors (schematic is shown below), R1 and R2
ACE1117H-ADJ
Application Circuit of ACE1117H –ADJ
The output voltage of adjustable version follows the equation: Vout=1.25*(1+R2/R1)+IAdj*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 125Ω or lower. As
ACE1117H-ADJ can keep itself stable at load current about 2mA, R1 is not allowed to be higher than
625Ω.
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 * ripple*CADJ)<R1.
VER 1.2
6
ACE1117H
1A Bipolar Linear Regulator
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 ACE1117H is
very large. ACE1117H series uses SOT-223 package type and its thermal resistance is about 20°C/W.
And the copper area of application board can affect the total thermal resistance. If copper area is 5cm*5cm
(two sides), the resistance is about 30°C/W. So the total thermal resistance is about 20°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 ACE1117H could allow on itself is less than 1W. And furthermore, ACE1117H will work
at junction temperature higher than 125°C under such condition and no lifetime is guaranteed.
Typical Performance Characteristic
TA=25℃ unless specified
ACE1117H-ADJ Vout vs. Vin
Vin(V)
ACE1117H-ADJ Vout vs. Iout
Iout(A)
VER 1.2
7
ACE1117H
1A Bipolar Linear Regulator
Typical Performance Characteristic
TA=25℃ unless specified
ACE1117H-ADJ Dropout vs. Iout
Iout(A)
ACE1117H-ADJ Vout vs. Temp
Temperature(℃)
VER 1.2
8
ACE1117H
1A Bipolar Linear Regulator
Packing Information
SOT-223
Symbol
A
A1
A2
A3
b
b1
b2
b3
c
c1
D
D1
D2
E
E1
E2
e
e1
L
L1
L2
R
R1
Θ
Θ1
Min
0.02
1.50
0.80
0.67
0.66
2.96
2.95
0.30
0.29
6.48
6.55
6.80
3.40
3.33
0.8
0.10
0.10
。
0
10。
Nom
1.60
0.90
0.71
3.00
0.30
6.53
6.60
3.50
3.43
2.30BSC
4.60BSC
1.00
1.75REF
0.25BSC
12。
Max
1.80
0.10
1.70
1.00
0.80
0.76
3.09
3.05
0.35
0.31
6.58
6.65
7.05
7.20
3.60
3.53
1.20
。
8
14。
UNITS OF MEASURE=MILLIMETER
ALL DIMENSIONS REFER TO JEDEC STANDARD TO261-AA
VER 1.2
9
ACE1117H
1A Bipolar Linear Regulator
Packing Information
TO-252
UNITS OF MEASURE=MILLIMETER
VER 1.2
10
ACE1117H
1A Bipolar Linear Regulator
Notes
ACE does not assume any responsibility for use as critical components in life support devices or systems
without the express written approval of the president and general counsel of ACE Electronics Co., LTD.
As sued 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 shoes 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 to the user.
2. 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, or to affect its safety
or effectiveness.
ACE Technology Co., LTD.
http://www.ace-ele.com/
VER 1.2
11