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Analog voltage output temperature sensor MM1522XU/XN
Analog voltage output temperature sensor
Monolithic IC MM1522XU/XN
Outline
This is a temperature sensor IC that can obtain +10mV/˚C linear output voltage relative to temperature
change.
Features
1. Temperature sensitivity ±10mV/˚C
2. Output voltage precision +3˚C max.
3. Consumption current 70µA typ.
4. Operating power voltage range +2.7~+10.0V
5. Operating temperature range
-
40~+125˚C
Package
SC-82ABB (MM1522XU)
SOT-25A (MM1522XN)
Applications
1. CPU heat protection
2. Battery charger heat protection
3. Cellular phones
Pin Description
SC-82ABB SOT-25A
Pin No. Pin Name Function
1 N.C
2 GND GND PIN
3 V
4 V
CC VCC PIN
OUT Output PIN
Pin No. Pin Name Function
1,3 N.C
2 GND GND PIN
4 V
5 V
CC VCC PIN
OUT Output PIN
Absolute Maximum Ratings
Item Symbol Rating Unit
Storage temperature T
Operating temperature T
Supply voltage V
Allowable loss Pd
(Ta=25˚C)
STG
OPR
CC max. +13 V
-
55~+150 ˚C
-
40~+125 ˚C
154 (SC-82ABB)
188 (SOT-25A)
mW
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Output voltage
max.
min.
-
25˚C30˚C 100˚C
Temperature
Output voltage
V
OUT
(+100˚C)
V
OUT
(-25˚C)
Slope: Temperature
sensitivity
-
25˚C100˚C
Temperature
Analog voltage output temperature sensor MM1522XU/XN
Electrical Characteristics
Item Symbol Measurement Conditions Min. Typ. Max. Unit
Accuracy Ac Ta=
Current consumption I
Output voltage
Temperature sensitivity
Nonlinearity
Line regulation LineReg Ta=+30˚C V
Load regulation LoadReg Ta=+30˚C IOUT=0~400µA 0 1
Temperature sensitivity of
current consumption
Note: *1 Design assurance value
Note:
2 Output voltage: VOUT
*
Terminal voltage at the time of Ta=-25˚C,
30˚C and 100˚C.
2 VOUT Ta=+30˚C 0.79 0.82 0.85 V
*
3 VSE 10*1
*
4 NL
*
(Except where noted otherwise, VCC=3V, Ta=-25~+100˚C, I
-
25~+100˚C
CC VCC=+2.7~+10V 70 110 µA
-
25˚C 0.24 0.27 0.30 V
Ta=
Ta=+100˚C 1.49 1.52 1.55 V
CC=+2.7~+10V 0 ±1.0
I
SE Ta=
-
40~+125˚C 0.2*1
OUT
±3*1
±0.8*1
=0µA)
mV/
mV/V
µV/µA
µA/
˚C
˚C
˚C
˚C
Note:
3 Temperature Sensitivity: VSE
*
Temperature coefficient of output voltage
calculated from output voltage at the time of
Ta=
-
25˚C and +100˚C.
SE=(VOUT (100˚C)
V
-
VOUT(-25˚C))/125
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-
25˚C30˚C 100˚C
Temperature
Output voltage
Approximated
straight line
a
a
a
measurement value
Analog voltage output temperature sensor MM1522XU/XN
Note:
4 Nonlinearity: NL
*
Characteristic curve of output voltage and
deflection with the approximation straight line.
In temperature range from
the approximation straight line and the
maximum deflection of the temperature of
the measurement value among output
voltages obtained from the approximation
straight line. It assumes the approximation
straight line to be a straight line to which a
is minimized.
-
25 to +100˚C,
Block Diagram
MM1522XU MM1522XN
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Measuring Circuit
Application Circuits
Analog voltage output temperature sensor MM1522XU/XN
Thermal watch of Microprocessor
Thermal watch of Battery Cell
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