AIC1117CY [AIC]
800mA Low Dropout Positive Adjustable Regulator; 800毫安低压差正可调稳压器
| 型号： | AIC1117CY |
| 厂家： | 
ANALOG INTERGRATIONS CORPORATION |
| 描述： | 800mA Low Dropout Positive Adjustable Regulator |
| 文件： | 总7页 (文件大小：114K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AIC1117
800mA Low Dropout Positive Adjustable
Regulator
FEATURES
DESCRIPTION
n
n
l Dropout Voltage 1.2V at 800mA Output Current.
l Fast Transient Response.
The AIC1117 is a low dropout three terminal
regulator with 800mA output current capability.
The output voltage is adjustable with the use
of a resistor divider. For fixed output voltage
versions, the output voltage is internally set at
2.85V, 3.3V or 5V. Dropout is guaranteed at a
maximum of 1.3V 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 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 SCSI-2 Active Terminator.
l Post Regulator for Switching Supply.
l Battery Chargers.
l Constant-Current Regulators.
l PC Add-On Card.
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
AIC1117
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
3
2
VIN
5V
AIC1117-28
AIC1117-33
AIC1117-50
VOUT
+
C1
m
10 F
1
+
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-1117-00 Mar 13, 00 TEL: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
1
AIC1117
ORDERING INFORMATION
n
AIC1117-XXXX
ORDER NUMBER
PIN CONFIGURATION
PACKAGING TYPE
E: TO-252
M: TO-263
T: TO-220
Y: SOT-223
FRONT VIEW
AIC1117CE
(TO-252)
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
TEMPERATURE RANGE
°
°
C: 0 C~+70 C
AIC1117CM
(TO-263)
FRONT VIEW
OUTPUT VOLTAGE
DEFAULT: ADJ.
28: 2.85V
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
33: 3.3V
50: 5.0V
FRONT VIEW
AIC1117CT
(TO-220)
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
FRONT VIEW
AIC1117CY
(SOT-223)
1: ADJ (GND)
2: VOUT (TAB)
3: VIN
1
2
3
ABSOLUTE MAXIMUM RATINS
n
n
VIN pin to ADJ/ GND pin ...........................…….......…….....…………............................ 7V
Operating Junction Temperature Range ..................………...................... 0°C ~ 125°C
Storage Temperature Range ...............................…………................. - 65°C ~ 150°C
Thermal Resistance (Junction to Case)
TO-220 ………........……...…………... 3°C /W
TO-252 …....……....………………..12.5°C /W
SOT-223 …....……..………..………..15°C /W
Lead Temperature (Soldering) 10 sec. .....................………............………...….......260°C
TEST CIRCUIT
Refer to TYPICAL APPLICATION CIRCUIT.
2
AIC1117
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
Output Voltage
AIC1117 (Adj.)
TJ=25°C
1.238
1.225
2.82
1.25
1.25
2.85
3.30
5.00
1.262
1.275
2.88
V
V
0°C£TJ£125°C
AIC1117-28, VIN=5V
AIC1117-33, VIN=5V
AIC1117-50, VIN=7V
2.65£VIN£7V
3.26
3.33
4.95
5.05
Line Regulation
Load Regulation
TJ=25°C
0.015
0.035
0.1
0.2
0.2
0.3
0.4
%
%
0°C£TJ£125°C
TJ=25°C, IO=10~800mA
0°C£TJ£125°C
DVOUT, DVREF =1%
10mA£IO£800mA
0°C£TJ£125°C
0°C£TJ£125°C
2.65£VIN£7V
0.2
Dropout Voltage
1.2
55
1.4
V
A
Current Limit
0.85
Adjusted Pin Current (IADJ
)
10mA£IO£ 800mA
0°C£TJ£125°C
2.65£VIN£7V
120
5
mA
Adjusted Pin Current Change
(DIADJ
10mA£IO£800mA
0°C£TJ£125°C
IO=0.5A
0.2
0.5
mA
)
%
Temperature Stability
Minimum Load Current
0°C£TJ£125°C
0°C£TJ£125°C
10Hz£f£10KHz
5
10
mA
%
0.003
RMS Output Noise (% of VOUT
)
120Hz input ripple
60
72
dB
Ripple Rejection Ratio
COUT=25mF
3
AIC1117
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)
Dropout Voltage (VOUT=3.3V)
Minimum Operating Current
1.19
1.8
1.6
1.4
1.2
1.18
1.17
1.0
0.8
0.6
0.4
0.2
1.16
1.15
1.14
0
1
2
3
4
5
0
100 200 300 400
500 600 700
800 900
Output Current (mA)
Differential Voltage (V)
4
AIC1117
BLOCK DIAGRAM
n
IN
V
Current Amp.
+
GM
-
+
REF
V
1.25V
Thermal
Limit
Current
Limit
m
55 A
OUT
V
For fixed voltage
device
GND
ADJ
PIN DESCRIPTIONS
n
n
ADJ PIN
-
Providing VREF=1.25V (typ.) for adjustable VOUT. VREF=VOUT-VADJ and IADJ=55mA (typ.)
(GND PIN -
VOUT PIN -
Power ground.)
Adjustable output voltage.
Power Input.
VIN PIN
-
PHYSICAL DIMENSIONS
l TO-220 (unit: mm)
A
SYMBOL
MIN
3.56
14.23
9.66
2.29
0.50
-
MAX
4.82
E
A
D
F
16.51
10.66
2.79
E
D
e
e1
e2
F
1.15
1.10
0.51
2.04
12.70
1.39
J1
L
2.92
14.73
L
e1
J1
e
e2
5
AIC1117
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
l SOT-223
SYMBOL
MIN
0.02
0.60
2.90
0.24
6.30
3.30
MAX
D
A1
B
0.12
0.80
3.15
0.35
6.80
3.70
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
l
SOT-223 Marking
Part No.
AIC1117CY
Marking
AK17
AIC1117-28
AIC1117-33
AIC1117-50
AK28
AK33
AK50
6
AIC1117
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
7
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