MCP9501/2/3/4
3.0
PIN DESCRIPTIONS
TABLE 3-1:
PIN FUNCTION TABLE
MCP9501/2/3/4
SOT-23-5
Symbol
Description
1
2
3
4
5
GND
GND
HYST
V DD
Output
Ground
Ground (must be connected to ground)
Hysteresis Selection Input:
HYST = GND → Hysteresis is 2°C (typical)
HYST = V DD → Hysteresis is 10°C (typical)
Power pin
Output Options:
MCP9501 → Open-Drain, Active-Low Output (Hot-Option)
MCP9502 → Push-Pull, Active-High Output (Hot-Option)
MCP9503 → Open-Drain, Active-Low Output (Cold-Option)
MCP9504 → Push-Pull, Active-High Output (Cold-Option)
3.1
Ground (GND)
3.3
Power Pin (V DD )
The GND pin is the system ground pin. Pin 2 must be
connected to system ground. Pin 1 can also be
connected to system ground which would provide
The operating voltage range, as specified in the DC
electrical specification table, is applied on this pin.
better thermal conduction to the die.
3.4
Switch Output (Output)
3.2
Hysteresis Input (HYS)
This output is triggered when temperature rises or falls
beyond the programmed trip temperature threshold.
This is an input pin which can be connected to V DD or
GND to select output hysteresis. Either 2°C
(HYST = GND) or 10°C (HYST = V DD ) of typical
hysteresis can be selected.
DS22268A-page 6
MCP9501/3 require an external pull-up resistor.
? 2011 Microchip Technology Inc.
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