AV1085S [AVICTEK]
3A Adjustable Low Dropout Linear Regulator (LDO); 3A可调低压差线性稳压器（ LDO ）
| 型号： | AV1085S |
| 厂家： | 
Avic Technology |
| 描述： | 3A Adjustable Low Dropout Linear Regulator (LDO) |
| 文件： | 总7页 (文件大小：104K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AV1085
TO-252,263,220
3A Adjustable Low Dropout
Linear Regulator (LDO)
@vic
GENERAL DESCRIPTION
FEATURES
The AV1085 is a positive and low dropout
three-terminal voltage regulator with 3A out-
put current capability. This device is design-
ed for use in low voltage applications that
offers lower dropout voltage and faster tran-
sient response.
Very easy to use, it requires only two
external resistors to set the output voltage
Low dropout voltage:
1.3V typical at up to 3A
Low ground current
Fast transient response
Current & thermal limiting
Line regulation: 0.5% typical
Load regulation: 0.5% typical
TO-220, TO-263 and TO-252 packages
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This device is fully protected against over
current faults, over temperature operation,
reversed input polarity, reversed lead insert-
ion, transient voltage spike …etc.
On-Chips trimming the reference voltage to
1% and features the low dropout of maxi-
mum 1.45 volts.
APPLICATIONS
High current microprocessor supplies
Low voltage logic supply
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The AV1085 Series regulators are available
in the popular industry standard TO-220
TO-263 and TO-252 packages.
Powering VGA & sound card
Portable instrumentation
Constant current regulator
Post regulator for switching power supply
TYPICAL APPLICATION
Vin
Vout
AV1085
IN
OUT
ADJ
Vref
R1
R2
Cin
Cout
10uF
+
+
10uF
Iadj
Vo = Vref (1+R2/R1) + Iadj x R2
1. Cin needed if device is far from from filter capacitors.
2. Cout required for stability.
- Basic Adjustable Regulator Circuit -
MAY-31-2001
1
3A Adjustable Low Dropout
Linear Regulator (LDO)
AV1085
TO-252,263,220
@vic
ABSOLUTE MAXIMUM RATINGS
Operating Junction
Temperature Range
Storage Temperature
Range
Lead Temperature
(Soldering, 10 Seconds)
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Maximum Supply Voltage
7V
0 to 125 °C
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Internally
Limited
Power Dissipation
-40 to 150 °C
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Thermal Resistance
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5 °C/W
260 °C
Junction to Case,
θJC
Thermal Resistance
Junction to Ambient,
TO-263
TO-252
TO-220
z
θJA
60 °C/W
70 °C/W
50 °C/W
(Unless otherwise specified, T = 25 °C.)
ELECTRICAL CHARACTERISTICS
A
Parameter
Symbol
Test Conditions
Typical
Limits
1.23VMin
1.27VMax
1.45V
2%
Reference Voltage
VREF VIN = 5V, IOUT = 10mA
1.25V
Dropout Voltage
Line Regulation
Load Regulation
Minimum Load
Current
VD
1.3V
0.5%
0.5%
V
REF = 1%, IOUT = 3A
Δ
REG(LINE)
(VOUT + 1.5V) V
7V, IOUT = 10mA
≤
≤
IN
REG
2.5%
(LOAD) (V -V ) = 3V, 10mA I
≤
OUT
3A
≤
IN
OUT
IO
IADJ
ICL
10mA
1.5V (V -V ) 5.75V
≤
≤
IN
OUT
Adjust Pin Current
Current Limit
55 A
100 A
µ
µ
VIN - VOUT = 2V
5.0A
4.0A (Min)
0.003%
of VOUT
RMS Output Noise
VN
RA
Ripple Rejection
Ratio
f = 120Hz, CADJ = 22 F for ADJ pin,
VIN = 5V, IOUT = 3A
µ
72dB
60dB (Min)
DEVICE SELECTION GUIDE
Device
Package
Marking
AV1085D
TO-252
AV1085D
AV1085S
AV1085S3
AV1085T
TO-263 (2-Lead) TO-263 (3-Lead)
TO-220
AV1085S
AV1085S3
AV1085T
2
MAY-31-2001
AV1085
TO-252,263,220
3A Adjustable Low Dropout
Linear Regulator (LDO)
@vic
PIN CONFIGURATIONS
Pin #
Function
1
2
3
Adjust
Output
Input
Note: TAB is Output Pin
MAY-31-2001
3
AV1085
TO-252,263,220
3A Adjustable Low Dropout
Linear Regulator (LDO)
@vic
TO-263 (D2PAK) MECHANICAL DATA
mm
mm
Dimension
Dimension
Min.
14.5
4.2
Typ.
15
Max.
15.8
4.7
Min.
1.0
Typ.
1.5
Max.
1.8
A
B
H
I
9.8
10.3
C
D
E
F
1.20
1.35
J
K
L
6.5
1.5
2.8
0.4
0.3
-0.102
8.5
0.5
0.203
9.5
0.7
1.4
M
N
4.83
5.08
5.33
G
9
MAY-31-2001
4
3A Adjustable Low Dropout
Linear Regulator (LDO)
AV1085
TO-252,263,220
@vic
TO-263 (D2PAK) MECHANICAL DATA
mm
mm
Dimension
Dimension
Min.
Typ.
15
Max.
Min.
Typ.
1.5
Max.
A
B
C
D
E
14.5
4.2
15.8
4.7
H
I
1.0
9.8
1.8
10.3
1.20
1.35
J
K
L
6.5
1.5
2.8
0.4
0.3
0.5
0.7
1.4
F
-0.102
8.5
0.203
9.5
M
N
4.83
5.08
5.33
G
9
MAY-31-2001
5
AV1085
TO-252,263,220
3A Adjustable Low Dropout
Linear Regulator (LDO)
@vic
TO-220 (3-Lead) MECHANICAL DATA
mm
mm
Dimension
A
Dimension
Min.
9.78
2.61
Typ.
Max.
10.54
2.87
Min.
2.4
Typ.
Max.
2.68
10.16
H
2.54
B
C
D
2.74
20
I
1.19
4.4
1.27
4.6
1.35
4.8
J
K
28.5
14.6
8.4
28.9
29.3
15.4
9.2
1.14
1.27
1.4
E
F
15.0
8.8
L
M
N
2.3
2.6
2.9
0.26
0.46
0.66
G
0.72
0.8
0.88
7
°
MAY-31-2001
6
3A Adjustable Low Dropout
Linear Regulator (LDO)
AV1085
TO-252,263,220
@vic
TO-252 (DPAK) MECHANICAL DATA
mm
mm
Dimension
Dimension
Min.
9.35
2.2
Typ.
Max.
10.1
2.4
Min.
Typ.
0.8
Max.
A
B
C
D
E
H
I
6.4
5.2
6.6
5.4
1
0.48
0.89
0.45
0.6
J
K
L
1.5
0.6
0.6
0.64
4.4
0.9
4.6
F
0.03
6
0.23
6.2
M
N
G
7
MAY-31-2001
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