MCP9501 datasheet(6/20 Pages) MICROCHIP

6 / 20 page

MCP9501/2/3/4

DS22268A-page 6

3.0

PIN DESCRIPTIONS

TABLE 3-1:

PIN FUNCTION TABLE

3.1

Ground (GND)

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

better thermal conduction to the die.

3.2

Hysteresis Input (HYS)

This is an input pin which can be connected to VDD or

GND

select

output

hysteresis.

Either

2°C

(HYST = GND) or 10°C (HYST = VDD) of typical

hysteresis can be selected.

3.3

Power Pin (VDD)

The operating voltage range, as specified in the DC

electrical specification table, is applied on this pin.

3.4

Switch Output (Output)

This output is triggered when temperature rises or falls

beyond the programmed trip temperature threshold.

MCP9501/3 require an external pull-up resistor.

MCP9501/2/3/4

Symbol

Description

SOT-23-5

GND

Ground

GND

Ground (must be connected to ground)

HYST

Hysteresis Selection Input:

HYST = GND

→ Hysteresis is 2°C (typical)

HYST = VDD → Hysteresis is 10°C (typical)

4VDD

Power pin

Output

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)

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