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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP9501 Datasheet

Temperature Switch

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MCP9501/2/3/4
Temperature Switch with Selectable Hysteresis
Features
• Factory Set Temperature Switch
• Available Temperature Switch Thresholds:
- TSET = -35°C, -25°C, -15°C, -5°C, +5°C,
+15°C, +25°C, +35°C, +45°C, +55°C, +65°C,
+75°C, +85°C, +95°C, +105°C, +115°C,
+125°C
• Wide Operating Voltage Range: 2.7V to 5.5V
• Low Supply Current: 25 µA (typical)
• Qualification: AEC-Q100 Rev. G, Grade 1
(-40°C to +125°C)
• Temperature Switch Accuracy:
- ±1°C (typical)
- ±4°C (maximum) between -15°C to +75°C
- ±6°C (maximum) between -40°C to +125°C
• Switch Threshold Options (Hot/Cold):
- Rising temperature: MCP9501/2 (Hot option)
- Falling temperature: MCP9503/4 (Cold option)
• Output Configuration Options:
- Active-low, open-drain output: MCP9501/3
- Uses external pull-up resistor
- Active-high, push-pull output: MCP9502/4
• User-Selectable Hysteresis: +2°C or +10°C
(typical)
• 5-Lead SOT-23 Package
Applications
• Power Supply Critical Temperature Shutdown
• Temperature Alarm
• Thermostat Control
• Fan Control
• Base Stations
• Automotive
Typical Performance
40%
35%
30%
TA = -35°C to +125°C
VDD = 4.1V
32 Units
25%
20%
15%
10%
5%
0%
-4.0 -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0
Temperature Accuracy (°C)
4.0
Description
Microchip Technology’s MCP9501/2/3/4 family devices
are temperature switches with ±1°C (typical) accurate
factory set output thresholds. These devices are ideal for
high-power supply systems where an overtemperature
protection circuit is needed. These devices do not
require external components, consume 25 µA (typical),
and the factory set thresholds provide simplicity.
In addition, this family of devices provides
user-selectable +2°C and +10°C (typical) switch hyster-
esis, and various output configurations. The MCP9501/2
outputs switch for rising temperatures, while the
MCP9503/4 devices switch for falling temperatures, with
the relative hysteresis at the set thresholds. This family
of devices is also available with an active-high, push-pull
output (MCP9502/4) and an active-low, open-drain
output (MCP9501/3). The push-pull output is ideal for a
microcontroller interface, while the open-drain output
can be used for level shifting, wired-OR configuration or
as a heater on/off switch.
The MCP9501/2/3/4 devices operate from a 2.7V to 5.5V
supply. This family is available with the space-saving
5-lead SOT-23 package.
Package Types
MCP9501/2/3/4
5-Lead SOT-23
GND 1
GND 2
HYST 3
5 Output
4 VDD
2011-2016 Microchip Technology Inc.
DS20002268B-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP9501 Datasheet

Temperature Switch

No Preview Available !

MCP9501/2/3/4
OUTPUT FUNCTIONAL DESCRIPTION
MCP9501, Hot Option (Open-Drain, Active-Low)
V
Output
Hysteresis
Note:
Available temperature thresholds for
Option P or for rising temperature
only: +5°C, +15°C, +25°C, +35°C,
+45°C, +55°C, +65°C, +75°C, +85°C,
+95°C, +105°C, +115°C, +125°.
COLD
THYST TSET HOT
Temperature
MCP9502, Hot Option (Push-Pull, Active-High)
V
Output
Hysteresis
Note:
Available temperature thresholds for
Option P or for rising temperature
only: +5°C, +15°C, +25°C, +35°C,
+45°C, +55°C, +65°C, +75°C, +85°C,
+95°C, +105°C, +115°C, +125°.
COLD
THYST TSET HOT
Temperature
MCP9503, Cold Option (Open-Drain, Active-Low)
V
Output
Hysteresis
Note:
Available temperature thresholds for
Option P or for rising temperature
only: +5°C, +15°C, +25°C.
Available temperature thresholds for
Option N or for falling temperature
only: -35°C, -25°C, -15°C, -5°C.
COLD
TSET THYST HOT
Temperature
MCP9504, Cold-Option (Push-Pull, Active-High)
V
Output
Hysteresis
Note:
COLD
TSET THYST HOT
Temperature
Available temperature thresholds for
Option P or for rising temperature
only: +5°C, +15°C, +25°C.
Available temperature thresholds for
Option N or for falling temperature
only: -35°C, -25°C, -15°C, -5°C.
Contact Microchip for all other threshold
options.
DS20002268B-page 2
2011-2016 Microchip Technology Inc.


Part Number MCP9501
Description Temperature Switch
Maker Microchip
Total Page 22 Pages
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