GS1086CT2.85 [VISHAY]
1.5A Low Dropout Positive Adjustable Regulator; 1.5A低压差正可调稳压器
| 型号： | GS1086CT2.85 |
| 厂家： | 
VISHAY |
| 描述： | 1.5A Low Dropout Positive Adjustable Regulator |
| 文件： | 总6页 (文件大小：82K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
GS1086
New Product
Vishay Semiconductors
formerly General Semiconductor
1.5A Low Dropout
Positive Adjustable Regulator
TO-252
(DPak)
TO-220AB
TO-263AB
(D2Pak)
SOT-223
1
2
3
2
3
2
3
1
1
3
GS1086CST
GS1086CE
2
1
GS1086CT
GS1086CM
Pin Definition
Description
1. Adjust/Gnd.
2. Vout (tab)
3. Vin
The GS1086 is a low dropout three terminal regulator with
1.5A output current capability. The output voltage is
adjustable with the use of a resistor divider. For fixed out-
put voltage versions, the output voltage is internally set at
2.5V, 2.85V, 3.3V or 5V. Dropout is guaranteed at a maxi-
mum 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.
Features
• Dropout Voltage 1.3V at 1.5A Output Current
• Fast Transient Response
• Line Regulation typically at 0.015%
• Load Regulation typically at 0.1%
• Internal thermal and current limiting
Applications
• Post Regulator for Switching Supply
• Battery Chargers
• Adjustable Output Voltage or Fixed 2.5V, 2.85V,
3.3V, 5V
• Standard 3-Pin Power Packages
• Constant-Current Regulators
• PC Add-On Card
Functional Block Diagram
Mechanical Data
Case: TO-220AB, TO-263AB (D2PAK),
VIN
TO-252 (DPAK) and SOT-223
Current
Amp
+
High temperature soldering guaranteed:
GM
--
+
VREF
1.25V
260°C/10 seconds at terminals
Thermal
Limit
Current
Limit
55µA
Case outlines are on the back page
VOUT
For
fixed
voltage
device
ADJ
GND
Document Number 74801
12-Mar-02
www.vishay.com
1
GS1086
Vishay Semiconductors
formerly General Semiconductor
Maximum Ratings and Thermal Characteristics (TA = 25°C unless otherwise noted)
Parameter
Symbol
Value
Unit
Vin Pin to ADJ/GND Pin
Thermal Resistance – Junction to Case
Vin
7
V
TO-220AB
TO-252
3.0
8.0
RθJC
°C/W
TO-263AB
SOT-223
3.0
15.0
Operating Junction Temperature Range
Storage Temperature Range
TJ
0 to +125
°C
°C
Tstg
–65 to 150
(2)
Electrical Characteristics(1) TJ = 25°C , VIN = 5V, Io = 10mA unless otherwise noted.
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
TJ = 25°C
1.238 1.250 1.262
1.225 1.250 1.275
0°C ≤ TJ ≤ 125°C
2.65V ≤ VIN ≤ 7V
10mA ≤ Io ≤ 1.5A
Reference Voltage
VREF
V
GS1086-2.5
VIN = 5V
2.47
2.82
3.26
4.95
0.98VN
2.5
2.85
3.30
5.00
VN
2.53
2.88
3.33
5.05
1.02VN
GS1086-2.85
GS1086-3.3
GS1086-5
GS1086
V
V
IN = 5V
IN = 5V
VIN = 7V
Output Voltage
VOUT
V
0°C ≤ TJ ≤ 125°C
2.65V ≤ VIN ≤ 7V
10mA ≤ Io ≤ 1.5A
2.65V ≤ VIN ≤ 7V
TJ = 25°C
0°C ≤ TJ ≤ 125°C
Line Regulation
Load Regulation
REGline
REGload
0.015
0.02
0.2
0.2
% VO
% VO
10mA ≤ Io ≤ 1.5A
TJ = 25°C
0°C ≤ TJ ≤ 125°C
0.1
0.2
0.3
0.4
0°C ≤ TJ ≤ 125°C
Io = 1.5A
1.3
1.25
1.2
1.5
1.45
1.4
Dropout Voltage
VDROP
V
Io = 1.0A
Io = 500mA
Output Current
Io
0°C ≤ TJ ≤ 125°C
1.5
2.0
A
2.65 ≤ Vin ≤ 7V
10mA ≤ Io ≤ 1.5A
0°C ≤ TJ ≤ 125°C
Adjust Pin Current
Iadj
55
120
5
µA
2.65 ≤ Vin ≤ 7V
10mA ≤ Io ≤ 1.5A
0°C ≤ TJ ≤ 125°C
Adjust Pin Current Change
Temperature Stability
∆Iadj
0.2
µA
Io = 0.5A
0°C ≤ TJ ≤ 125°C
TS
0.8
3
%VO
mA
Minimum Load Current
Adjustable Version
ILMIN
0°C ≤ TJ ≤ 125°C
10
www.vishay.com
2
Document Number 74801
12-Mar-02
GS1086
Vishay Semiconductors
formerly General Semiconductor
(2)
Electrical Characteristics(1) (con’t.) TJ = 25°C , VIN = 5V, Io = 10mA unless otherwise noted.
Parameter
Symbol
Test Conditions
0°C ≤ TJ ≤ 125°C
10HZ ≤ f ≤ 10 kHZ
Min
Typ
10
Max
Unit
mA
Quiescent Current
Fixed Voltage Version
IQ
14
RMS Output Noise
N
0.003
68
%VO
dB
f = 120 HZ, CO = 25µF
Cadj = 25µF
Ripple Rejection Ratio
RR
60
Thermal Regulation
Long Term Stability
Notes:
RTH
TA = 25°C, 30ms Pulse
TA = 125°C, 1000 Hrs
0.02
0.3
0.05
%/W
%VO
(1) All parameters, except nominal output voltage are specified for the variable voltage version, allowing a wider Vin Range.
The specified limits also apply for the fixed voltage versions over the allowable input voltage range: GS1086-2.5 (3.9V - 7.0V), GS1086-2.85 (4.25V - 7.0V),
GS1086-3.3 (4.75V - 7.0V), GS1086-5 (6.4V - 7.0V).
(2) To maintain the specified junction temperatures, low duty cycle pulse testing is required for most parameters.
Typical Application Circuit
VIN
5V
VOUT
3.3V
3
2
VIN
5V
3
2
GS1086-2.5
GS1086-2.85
GS1086-3.3
GS1086-5
GS1086
ADJ
VOUT
R1
125Ω
1%
1
VREF
+
+
1
C2
10µF
C2
10µF
+
+
C1
10µF
C1
10µF
R2
205Ω
1%
Adjustable Voltage Regulator
Fixed Voltage Regulator
Notes:
REF = VOUT – VADJ = 1.25V (typ.)
VOUT = VREF x (1+R2/R1) + IADJ x R2
ADJ = 55µA (typ.)
V
I
(1) C1 needed if device is far away from filter capacitors
(2) C2 required for stability
Document Number 74801
12-Mar-02
www.vishay.com
3
GS1086
Vishay Semiconductors
formerly General Semiconductor
Ratings and
Characteristic Curves (TA = 25°C unless otherwise noted)
Fig. 2 – Dropout Voltage v.s.
Temperature
Fig. 1 – Dropout Voltage (V
= 3.3V)
OUT
2.0
1.6
1.2
0.8
0.4
1.30
1.25
1.20
1.15
1.10
1.05
IOUT = 1.5A
TJ = 50°C
TJ = 0°C
TJ = 125°C
0
0
200
400
600
800 1000 1200 1400 1600
0
20
40
60
80
100
120
140
Output Current (mA)
Ambient Temperature (°C)
Fig. 3 – Minimum Load Current
(Adjustable Version)
Fig. 4 – Adjust Pin Current
100
80
60
40
20
0
5
4
3
2
TJ = 125°C
TJ = 25°C
TJ = 0°C
1
0
--50
--25
0
25
50
75
100
125
1
2
3
4
5
6
Temperature (°C)
Input / Output Differential Voltage (V)
Fig. 6 – Ripple Rejection
(with C 25µF)
Fig. 5 – Temperature Stability
adj
80
70
60
50
1.6
1.2
COUT = 25µF
I
= 0.5A
out
0.8
COUT = 10µF
COUT = 25µF
0.4
0.0
40
30
20
--0.4
--0.8
COUT = 10µF
--1.2
--1.6
10
100
1K
10K
100K
1M
--20
0
20
40
60
80
100
120 140
Frequency (Hz)
Temperature (°C)
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Document Number 74801
12-Mar-02
GS1086
Vishay Semiconductors
formerly General Semiconductor
Ratings and
Characteristic Curves (TA = 25°C unless otherwise noted)
Fig. 7 – Load Transient Response
Fig. 8 – Line Transient Response
0.1
0.05
0
50
0
VIN = 5V
CIN = 1µF
COUT = 10µF (Tantalum)
VOUT = 3.3V
--0.05
--0.1
--50
--100
COUT = 10µF (Tantalum)
VOUT = 3.3V
0.4A
0.1A
7.0
6.0
0
40
80
120
160
200
0
10
20
30
40
50
Time (µs)
Time (µs)
Ordering Information
GS1086Cxx xxx
Output Voltage
Default: Adj.
2.5: 2.5V
2.85: 2.85V
3.3: 3.3V
5: 5.0V
Package Type
ST: SOT-223
T: TO-220
M: TO-263
E: TO-252
Document Number 74801
12-Mar-02
www.vishay.com
5
GS1086
Vishay Semiconductors
formerly General Semiconductor
Case Outlines
SOT-223
TO-252 (DPAK)
6.73
6.35
2.38
2.19
6.80
6.30
3.15
2.90
0.58
0.46
5.46
5.21
Top View
7.30
6.70
3.70
3.30
5.59
5.33
10.42
9.40
2
3
1
1
2
3
0.80
0.60
0.88
0.64
0.51 (min.)
1.80
Max.
2.28 (TYP.)
0.35
0.24
0.91
Min.
1.27
1.02
0.12
0.02
2.30
Typ.
13° ±3°
Dimensions in millimeters
TO-263
TO-220
4.82
3.56
4.08
3.54
10.66
9.66
4.83
4.06
10.29
9.65
1.39
0.51
1.40
1.14
3.42
2.54
6.85
5.85
16.51
14.23
1.40 (max.)
9.66
8.63
15.88
14.60
1
2
3
2.80
2.28
1.40
1.14
6.35 Max.
14.73
12.70
1.00
0.7 (max.)
0.50
2.54 (TYP.)
(with plating)
1.14
2.79
2.29
1.77
1.15
0.31
2.92
2.04
1.01
0.38
(with plating)
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Document Number 74801
12-Mar-02
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