MITSUMI
Temperature Switch IC with Hysteresis MM3496
Temperature Switch IC with Hysteresis
Monolithic IC MM3496
Outline
This IC is a temperature switch IC that changes the IC output level from Low to High when the temperature
around the IC reaches the detection temperature. With the hysteresis function, IC output level returns to
Low when the ambient temperature drops to the hysteresis temperature selected after detection. Detection
temperature T
DET
can be selected in 1.0°C steps between the range of 60 to 90°C with rank expansion, with
detection temperature accuracy of ±2.0°C.
Features
1.
2.
3.
4.
5.
High Temperature accuracy
Comes with hysteresis function
Low current consumption
Low power supply operation range
Small package
Package
SSON-4B
Applications
1.
2.
3.
4.
5.
6.
Cellular phones
LCD TVs/panels
Game equipment
PCs
System thermal monitors
OA equipment
MITSUMI
Temperature Switch IC with Hysteresis MM3496
Model Name
M
M
3
4
9
6
1
2
R
3
R
4
E
MM3496A
RRE, MM3496B
RRE, MM3496C
RRE
1
Hysteresis Temperature (T
HYS
) (Note1)
A
T
HYS
=5.0°C
B
T
HYS
=10°C
C
T
HYS
=15°C
2
Detecitng Temperature (T
DET
) (Note1)
01
T
DET
=+50°C
T
DET
is 1.0°C steps
31
T
DET
=+80°C
~
MM3496D
RRE, MM3496E
RRE, MM3496F
RRE
1
Hysteresis Temperature (T
HYS
) (Note1)
D
T
HYS
=5.0°C
E
T
HYS
=10°C
F
T
HYS
=15°C
2
Detecitng Temperature (T
DET
) (Note1)
01
T
DET
=-5.0°C
T
DET
is 1.0°C steps
21
T
DET
=+15°C
~
R
L
Note1 : Refer to [10. TIMING CHART] for the definition of the Hysteresis Temperature
and the Detecitng Temperature.
R
3
Package
SSON-4B
4
Packing Specifications
R HOUSING (Standard)
L HOUSING
MITSUMI
Temperature Switch IC with Hysteresis MM3496
Block Diagram
V
DD
Reference
Voltage Source
DET
Noise Rejection
Circuit
Temperature
Sensor
GND
Pin Assignment
4
3
1
2
3
4
DET
GND
NC
V
DD
1
2
SSON-4B
(TOP VIEW)
MITSUMI
Temperature Switch IC with Hysteresis MM3496
Pin Description
Pin No.
Pin Name
Function
Internal Equivalent Circuit
1
1
DET
Temp. Detect Output Pin
GND
2
GND
Ground pin
3
3
NC (Note2)
NC (Testing pin)
GND
4
V
DD
Power supply pin
Note2 : Testing pin is connected with the internal circuit for testing.
When resistance and capacity are connected with Testing pin, this product produce improper operating
signals. Please set Testing pin to the open state.
Absolute Maximum Ratings
Item
Maximum Supply Voltage
Terminal Voltage
Storage Temperature
Power Dissipation
Symbol
V
DDmax
DET
max
T
stg
Pd
Ratings
−0.3~+6.0
−0.3~+6.0
−55~+125
150
Units
V
V
°C
mW
Recommended Operating Conditions
Item
Operating Supply Voltage
Operating Temperature
Symbol
V
DDopr
T
opr
Ratings
+2.5~+4.5
−30~+105
Units
V
°C
MITSUMI
Temperature Switch IC with Hysteresis MM3496
Electrical Characteristics
Item
Operating Supply Voltage
Detecitng Temperature
Accuracy (Note3)
Hysteresis Temperature
(Note4)
(Except where noted otherwise Ta=25°C, V
DD
=2.8V)
Measurement conditions
Min. Typ. Max. Units
2.5
−2.0
T
HYS
=5.0°C
2.8
0
5.0
10.0
15.0
4.0
12.0
0.1
1.5
Ta=+60~+90°C
R
PULL-UP
= 1MΩ
250
100
3.5
500
500
4.5
+2.0
V
°C
°C
°C
°C
mA
µA
µA
µs
µs
Symbol
V
DD
T
DETAC1
T
HYS
T
HYS
=10°C
T
HYS
=15°C
DET Sink Current
I
DETL
I
LEAK
I
DD
t
noise
t
vsr
V
DET
=0.4V,
V
DET
=Low Level
V
DD
=5.0V,
V
DET
=High Level
DET Leak Current
Supply Current
Noise Rejection Time
V
DD
Start-up Response
Note3 : Detection temperature can be selected in 1.0°C steps
Note4 : Hysteresis temperature can be selected in 5.0°C steps
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