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MCP9509/10
Resistor-Programmable Temperature Switches
Features
Description
?
?
?
?
Resistor-Programmable Temperature Switch
Wide Operating Voltage Range: 2.7V to 5.5V
Low Supply Current: 30 μA (typical)
Temperature Switch Accuracy:
- ±0.5°C (typical) at +25°C, +45°C
Microchip Technology’s MCP9509/10 devices are pro-
grammable logic output temperature switches. The
temperature switch threshold can be programmed with
a single external resistor, which provides high design
flexibility and simplicity. In addition, this family of
devices provide user programmable features such as
- ±1°C (typical) 0°C to +70°C
- ±3.5°C (maximum) 0°C to +125°C
- ±4.5°C (maximum) -20°C to +125°C
- ±2°C (typical) -40°C to +125°C
? Sensor Options available:
- Switch for rising temperature: Cold to Hot (H)
- Switch for falling temperature: Hot to Cold (C)
? Output Configurations:
- Open-Drain:
– External Pull-up Resistor: MCP9509
– Internal Pull-up Resistor: MCP9510
- Active-Low, Push-Pull: MCP9510
- Active-High, Push-Pull: MCP9510
2°C and 10°C (typical) switch hysteresis and output
structure configuration. The MCP9509 provides an
open drain output, whereas the MCP9510 is offered in
three different user selectable output configurations:
Active-low/Active-high push pull and Active-Low
Open-Drain output with an internal 100 k Ω pull-up
resistor.
The MCP9509/10 operate from 2.7V to 5.5V. This
family is capable of triggering for temperatures -40°C to
+125°C with high accuracy.
Package Types
MCP9509
SOT-23-5
? User Selectable Hysteresis: 2°C or 10°C (typical)
? Space-Saving SOT-23-5, SOT-23-6 Packages
Applications
SET 1
GND 2
OUT 3
5 V DD
4 HYST
?
?
Power Supply Thermal Shutdown
Temperature Alarm
MCP9510
SOT-23-6
?
?
?
?
Thermostat Control
Fan Control
Base-Stations
Automotive
SET 1
GND 2
OUT / OUT 3
6 V DD
5 OUTSET
4 HYST
Typical Performance
20%
16%
12%
T A = +45°C
V DD = 4.1V
9087 Units
6 Lots
8%
4%
0%
Temperature Accuracy (°C)
? 2008 Microchip Technology Inc.
DS22114A-page 1
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