AS300LP13 [ETC]
Shunt Temperature Sensor; 分流器温度传感器
| 型号： | AS300LP13 |
| 厂家： | 
ETC |
| 描述： | Shunt Temperature Sensor |
| 文件： | 总6页 (文件大小：71K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AS300
Shunt Temperature Sensor
SEMICONDUCTOR
Features
Description
Calibrated directly in Kelvin
Linear 10 mV/¡C scale factor
1¡C typical accuracy at 27¡C (300 K)
Fully rated for Ð40 to 125¡C
(233 to 398 K)
The AS300 is a two-terminal integrated circuit temperature sensor. It is
a precision-trimmed shunt type regulator that emulates a zener diode
in function. Its output voltage is linearly proportional to temperature in
Kelvin. The output voltage is calibrated for 3.000 V at 27¡C (300 K) and
increases by 10 mV/¡C.
¥
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The AS300 is available in four packages.The SOT-223 offers a large
heat-sink for transferring heat to the die for fast and accurate thermal
sensing. The SOT-223 is especially effective at sensing the tem-
perature of hybrid and MCM substrates. The SOT-23 is best-suited
for applications requiring a small footprint or precision force/sense
metering.
Suitable for remote applications
Low-impedance output, 0.3 ½ for a
1 mA load
Now available in the SOT-223 for
improved substrate temperature
sensing
¥
¥
¥
Pin Configuration Ñ Top view
TO-92 (LP)
SOT-223 (G)
V
TEMP
V
TEMP
GND (F)
GND (S)
GND (F)
GND (S)
SOIC (D)
SOT-23/3L (VS)
GND (S)
GND (F)
N/C
N/C
1
2
3
4
8
7
6
5
V
TEMP
N/C
TEMP (F)
TEMP (F)
GND
V
GND
N/C
V
Ordering Information
AS300 LP
A
Packaging Option:
Circuit Type:
= Ammo Pack
= Bulk
= Tube
A
B
T
Shunt Temperature Sensor
= Tape and Reel (7" Reel Dia)
= Tape and Reel (13" Reel Dia)
7
13
Package Style:
= SOIC
D
= SOT-223
= TO-92
= SOT-23/3L
G
LP
VS
ASTEC Semiconductor
1
AS300
Shunt Temperature Sensor
Functional Block Diagram
V
TEMP
+
–
+
–
10 mV/°C
GND
Pin Function Description
Pin Number
TO, SOT
SOIC
Function
Description
1
2
3
1
2
6
GND (S)
GND (F)
Optional sense pin ground, otherwise tie to substrate pin GND (F).
Signal ground and circuit substrate.
VTEMP (F)
Output voltage proportional to temperature. VTEMP is nominally 3.00 V
at 27¡C (300 K) and increases at 10 mV/¡C.
Ð
5
VTEMP (S)
Optional sense pin for VTEMP. Available on the 8L SOIC package only.
Tie pin to VTEMP (F) if not using force/sense metering.
Absolute Maximum Ratings
Parameter
Symbol
IREF
Rating
Unit
Supply Current
20
mA
Continuous Power Dissipation at 25¡C
TO-92
PD
775
1250
mW
mW
mW
mW
¡C
SOT-223
8L SOIC
750
SOT-23/3L
200
Junction Temperature
Operating Temperature
Storage Temperature
Lead Temp, Soldering 10 Seconds
TJ
150
Ð40 to 125
Ð65 to 150
300
¡C
TSTG
TL
¡C
¡C
Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sec-
tions of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
ASTEC Semiconductor
2
Shunt Temperature Sensor
AS300
Typical Thermal Resistances
Package
θJA
θJC
Typical Derating
TO-92
160¡C/W
115¡C/W
175¡C/W
575¡C/W
80¡C/W
8¡C/W
6.3 mW/¡C
8.7 mW/¡C
5.7 mW/¡C
1.7 mW/¡C
SOT-223
8L SOIC
SOT-23/3L
45¡C/W
150¡C/W
Electrical Characteristics
Electrical Characteristics are guaranteed over the full junction temperature range (Ð40 to 125¡C). Ambient temperature must be
derated based upon power dissipation and package thermal characteristics.
Parameter
Symbol
VTEMP
Test Condition
Min.
2.970
3.690
Typ.
3.000
3.730
40
Max.
3.030
3.770
Unit
V
Output Voltage
IK = 2 mA, TJ = 27¡C (300 K)
IK = 2 mA, TJ = 100¡C (373 K)
IK = 2 mA, deviation from 10 mV/¡C
VTEMP
V
Temperature Coefficient Error
Minimum Operating Current
Output Impedance
µV/¡C
mA
½
IK(min)
ZKA
0.6
2
IK = 0.6 to 5.5 mA
0.3
Test Circuit
V
V
IN
TEMP
IK
Figure 1
ASTEC Semiconductor
3
AS300
Shunt Temperature Sensor
Typical Performance Curves
Forward Characteristics
Output Voltage
5.0
0.7
0.6
0.5
0.4
0.3
T = 27°C
IK = 2 mA
4.5
J
4.0
3.5
3.0
2.5
2.0
1.5
0.2
0.1
0
–0.1
–50
–25
250
0
25
300
50
75
350
100
125 (°C)
400 (K)
0.01
0.1
1.0
10
100
I
– Forward Current (µA)
F
T – Temperature
Figure 2
Figure 3
Thermal Response by Package in Still Air
Thermal Response by Package in a Stirred Oil Bath
120
100
80
120
100
80
SOT-223
SOT-223
TO-92
TO-92
60
8L SOIC
60
40
20
0
40
20
0
8L SOIC
0
4
8
12
16
20
24
0
2
4
6
8
10
12
Time (s)
Time (s)
Figure 4
Figure 5
ASTEC Semiconductor
4
Shunt Temperature Sensor
AS300
Typical Performance Curves
Operating Characteristics
Operating Characteristics
1.50
10k
1k
27°C
27°C
1.25
1.00
0°C
100
10
100°C
0°C
0.75
0.50
0.25
0
1.0
0
100°C
0
1
2
3
4
0
1
2
3
4
VTEMP – Output Voltage (V)
VTEMP – Output Voltage (V)
Figure 6
Figure 7
Transient Response
Dynamic Impedance
4
3
2
1
0
5
1k
T = 27°C
J
T = 27°C
IK = 2 mA
J
OUTPUT
1k
100
10
V
V
IN
OUT
1.0
INPUT
0.1
0
0.01
0.01
0.1
1.0
10
10
1k
0
25
50
500
600
t – Time (µs)
f – Frequency (kHz)
Figure 8
Figure 9
ASTEC Semiconductor
5
AS300
Shunt Temperature Sensor
Typical Applications
Linear Fan Controller
Fahrenheit Thermometer
15 V
9 V
5k
12 VDC, 120 mA
Brushless Fan
M
9.1k
15k
20k
100 µA Full Scale
Analog Meter
2N2907
130k
+
A
LM358
Ð
AS300
R2
AS431
500
R1
AS300
AS1004-1.2
Adjust R1 to set 0°F reading (120k)
Adjust R2 to set 100°F reading (2.7k)
Figure 10
Figure 11
Linear Fan Controller
Thermostat
1.2 V
V
CC
12 VDC, 120 mA
Brushless Fan
M
120k
91k
10k
10k
R1
R2
R3
+
+
IRF233
LM358
LM339
Ð
Ð
AS300
34k
AS300
1 nF
Figure 12
Figure 13
ASTEC Semiconductor
6
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