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AIC1117A-50CT [AIC]

1A Low Dropout Positive Adjustable Regulator; 1A低压差正可调稳压器
AIC1117A-50CT
型号： AIC1117A-50CT
厂家： ANALOG INTERGRATIONS CORPORATION    ANALOG INTERGRATIONS CORPORATION
描述：

1A Low Dropout Positive Adjustable Regulator
1A低压差正可调稳压器

稳压器
文件： 总8页 (文件大小：139K)
中文：  中文翻译
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AIC1117A  
1A Low Dropout Positive Adjustable Regulator  
FEATURES  
DESCRIPTION  
n
n
l Dropout Voltage 1.3V at 1A Output Current.  
The AIC1117A is a low dropout three terminal  
regulator with 1A output current capability. The  
output voltage is adjustable with the use of a  
resistor divider or fixed 2.85V, 3.3V, 5V. Dropout  
is guaranteed at a maximum of 1.5V at  
maximum output current. Its low dropout voltage  
and fast transient response make it ideal for low  
voltage microprocessor applications. Internal  
current and thermal limiting provides protection  
against any overload condition that would create  
excessive junction temperatures.  
l Fast Transient Response.  
l Line Regulation typically at 0.015%.  
l Load Regulation typically at 0.1%.  
l Internal Thermal and Current Limiting.  
l Adjustable Output Voltage or Fixed 2.85V, 3.3V,  
5V.  
l Standard 3-Pin Power Packages.  
APPLICATIONS  
n
l Post Regulator for Switching Supply.  
l Active SCSI Termination.  
l Battery Chargers.  
l Constant-Current Regulators.  
l Motherboard Clock Supplies.  
TYPICAL APPLICATION CIRCUIT  
n
VREF=VOUT - VADJ=1.25V (typ.)  
VOUT=VREF x (1+RF2/RF1)+ IADJ x RF2  
IADJ=55mA (typ.)  
3
2
VIN  
5V  
AIC1117A  
VOUT  
3.3V  
RF1  
+
VREF  
C1  
m
10 F  
ADJ  
1
W
125  
1%  
+
C2  
m
10 F  
(1) C1 needed if device is far away from filter  
capacitors.  
RF2  
205  
1%  
W
(2) C2 required for stability.  
Adjustable Voltage Regulator  
VIN  
5V  
VOUT  
3.3V  
AIC1117A-33  
+
C1  
m
10 F  
+
C2  
m
10 F  
GND  
Fixed Voltage Regulator  
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC  
DS-1117A-00 May 21, 01 TEL: 886-3-5772500 FAX: 886-3-5772510  
www.analog.com.tw  
1
AIC1117A  
ORDERING INFORMATION  
n
AIC1117A-XXCX  
ORDER NUMBER  
PIN CONFIGURATION  
AIC1117ACE  
(TO-252)  
PACKAGING TYPE  
E: TO-252  
FRONT VIEW  
M: TO-263  
1: ADJ  
T: TO-220  
Y: SOT-223  
2: VOUT (TAB)  
3: VIN  
1
2
3
AIC1117ACM  
(TO-263)  
FRONT VIEW  
DEFAULT: ADJ.  
28: 2.85V  
1: ADJ  
2: VOUT (TAB)  
3: VIN  
33: 3.3V  
50: 5.0V  
1
2
3
FRONT VIEW  
AIC1117ACT  
(TO-220)  
1: ADJ  
2: VOUT (TAB)  
3: VIN  
1
2
3
FRONT VIEW  
AIC1117ACY  
(SOT-223)  
1: ADJ  
2: VOUT (TAB)  
3: VIN  
1
2
3
2
AIC1117A  
ABSOLUTE MAXIMUM RATINS  
n
VIN pin to ADJ/GND pin ...........................…….......…….......……………...................... 7V  
Operating Junction Temperature Range  
..................………...................... 0°C ~ 125°C  
Power Dissipation …………………………………………………………….Internally Limited  
Thermal Resistance (Junction to Case)  
TO-220 ………........……...…………... 3°C /W  
TO-263 …....……....…………………….3°C /W  
SOT-223 …....……..………..………..15°C /W  
TO-252 ……………………………..12.5°C /W  
Thermal Resistance (Junction to Ambient) TO-220  
(Assume no ambient airflow, no heatsink) TO-263  
…....……....………………… 50°C/W  
….....…….....………………..60°C/W  
SOT-223 ……………………………..155°C/W  
TO-252 ……………………………..100°C/W  
...............................…………................. - 65°C ~ 150°C  
Lead Temperature (Soldering) 10 sec. .....................………............………...….......260°C  
Storage Temperature Range  
ELECTRICAL CHARACTERISTICS (V =5V, T =25°C, I =10mA, Unless otherwise  
n
IN  
J
O
specified)  
PARAMETER  
TEST CONDITIONS  
MIN.  
TYP.  
MAX. UNIT  
Reference Voltage  
TJ=25°C  
1.238  
1.225  
1.25  
1.25  
1.262  
0°C£TJ£125°C  
2.65V£VIN£7V  
10mA£IO£1A  
1.275  
V
AIC1117A-28, VIN=5V  
AIC1117A-33, VIN=5V  
AIC1117A-50, VIN=7V  
AIC1117A  
2.82  
3.26  
4.95  
2.85  
3.30  
5.00  
2.88  
3.33  
5.05  
V
Output Voltage  
0°C£TJ£125°C  
2.65V£VIN£7V  
10mA£IO£1A  
0.98VN  
VN  
1.02VN  
2.65£VIN£7V  
Line Regulation  
TJ=25°C  
0.015  
0.035  
0.2  
0.2  
%VOUT  
0°C£TJ£125°C  
3
AIC1117A  
ELECTRICAL CHARACTERISTICS (Continued)  
n
PARAMETER  
TEST CONDITIONS  
MIN.  
TYP.  
MAX. UNIT  
TJ=25°C, IO=10mA ~1A  
0°C£TJ£125°C  
DVOUT, DVREF =1%  
IO=1A  
0.1  
0.2  
0.3  
Load Regulation  
%VOUT  
0.4  
Dropout Voltage  
1.3  
55  
1.5  
V
A
0°C£TJ£125°C  
0°C£TJ£125°C  
2.65£VIN£7V  
Current Limit  
1
Adjusted Pin Current (IADJ  
)
10mA£IO£1A  
0°C£TJ£125°C  
2.65£VIN£7V  
120  
5
mA  
Adjusted Pin Current Change  
(DIADJ  
10mA£IO£1A  
0°C£TJ£125°C  
IO=0.5A  
0.2  
0.5  
mA  
)
% VOUT  
Temperature Stability  
0°C£TJ£125°C  
0°C£TJ£125°C  
0°C£TJ£125°C  
10Hz£f£10KHz  
5
10  
14  
mA  
mA  
Minimum Load Current ( Adj. )  
10  
Quiescent Current ( Fixed Version)  
0.003  
%VOUT  
RMS Output Noise (% of VOUT  
)
120Hz input ripple  
60  
72  
dB  
Ripple Rejection Ratio  
COUT=25mF  
4
AIC1117A  
TYPICAL PERFORMANCE CHARACTERISTICS  
n
Load Transient Response  
Line Transient Response  
0.1  
0.05  
50  
0
0
-0.05  
-0.1  
--50  
VIN=5V  
m
COUT=10 F (Tantalum)  
--100  
m
CIN=1 F  
VOUT=3.3V  
m
COUT=10 F (Tantalum)  
VOUT=3.3V  
0.4A  
0.1A  
7.0  
6.0  
0
10  
20  
30  
40  
50  
0
40  
80  
120  
160  
200  
m
m
Time ( S)  
Time ( S)  
Minimum Operating Current  
Dropout Voltage (VOUT=3.3V)  
1.26  
1.24  
1.22  
1.20  
1.18  
5.0  
4.5  
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.16  
0
1.0  
0
1
2
3
4
5
200  
400  
600  
800  
1000  
Output Current (mA)  
Differential Voltage (V)  
Minimum Load Current (Adjustable Version)  
5
4
3
2
1
0
°
T =125 C  
J
°
T =125 C  
J
°
T =0 C  
J
1
2
3
4
5
6
7
8
9
Input/Output Differential (V)  
5
AIC1117A  
BLOCK DIAGRAM  
n
VIN  
Current Amp.  
+
GM  
-
+
VREF  
1.25V  
Thermal  
Limit  
Current  
Limit  
m
55 A  
VOUT  
For fixed voltage  
device  
GND  
ADJ  
PIN DESCRIPTIONS  
n
ADJ PIN  
-
Providing VREF=1.25V (typ.) for adjustable VOUT. VREF=VOUT-VADJ and IADJ=55mA (typ.)  
(GND PIN -  
Power ground.)  
VOUT PIN -  
Adjustable output voltage.  
Power Input.  
VIN PIN  
-
6
AIC1117A  
PHYSICAL DIMENSIONS  
n
l TO-220 (unit: mm)  
A
SYMBOL  
MIN  
3.56  
MAX  
4.82  
E
A
D
E
F
14.23  
9.66  
16.51  
10.66  
D
e
e1  
e2  
F
2.29  
0.50  
-
2.79  
1.15  
1.10  
1.39  
2.92  
14.73  
0.51  
2.04  
12.70  
J1  
L
L
e1  
J1  
e
e2  
l TO-252 (unit: mm)  
E
C1  
SYMBOL  
MIN  
2.19  
1.02  
0.64  
5.21  
0.46  
5.33  
6.35  
MAX  
2.38  
1.27  
0.88  
5.46  
0.58  
5.59  
6.73  
b2  
A
A
A1  
b
b2  
C1  
D
D
H
E
L
e
2.28 (TYP.)  
e
H
9.40  
0.51  
10.42  
-
b
A1  
L
7
AIC1117A  
l SOT-223  
SYMBOL  
MIN  
0.02  
0.60  
2.90  
0.24  
6.30  
3.30  
MAX  
0.12  
0.80  
3.15  
0.35  
6.80  
3.70  
D
A1  
B
B1  
°
° ±  
13  
3
B1  
C
E
H
e
A1  
D
B
E
3 (PLCS)  
° ±  
°
3
13  
e
2.30 (TYP.)  
H
6.70  
7.30  
C
0.91 MIN  
°
0
°
~ 10  
° ±  
°
3
13  
SOT-223 Marking  
l
Part No.  
Marking  
BS17  
AIC1117ACY  
AIC1117A-28CY  
AIC1117A-33CY  
AIC1117A-50CY  
BS28  
BS33  
BS50  
l TO-263 (unit: mm)  
SYMBOL  
MIN  
4.06  
0.50  
1.14  
-
MAX  
4.83  
1.00  
1.40  
0.7  
E
A
A
b
C2  
L2  
b2  
C
D
L
c2  
D
1.14  
8.63  
9.65  
1.40  
9.66  
10.29  
L1  
E
e
2.54 (TYP.)  
e
L
14.60  
2.28  
-
15.88  
2.80  
1.40  
b2  
C
b
L1  
L2  
8

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