AIC1117A-28CM [AIC]
1A Low Dropout Positive Adjustable Regulator; 1A低压差正可调稳压器型号: | AIC1117A-28CM |
厂家: | ANALOG INTERGRATIONS CORPORATION |
描述: | 1A Low Dropout Positive Adjustable Regulator |
文件: | 总8页 (文件大小:139K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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
相关型号:
©2020 ICPDF网 联系我们和版权申明