Datasheet MCP9501, MCP9502, MCP9503, MCP9504 Datasheet

MCP9501/2/3/4

Temperature Switch with Selectable Hysteresis

Features

• Factory Set Temperature Switch

• Available Temperature Switch Thresholds:

-T

= -35°C,-25°C, -15°C, -5°C, 5°C, 15°C,

SET

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)

• Temperature Switch Accuracy:

- ±1°C (typical)

- ±4°C (maximum) -15°C to +75°C

- ±6°C (maximum) -40°C to +125°C

• Switch Threshold Options (Hot/Cold):

- Rising Temp.: MCP9501/2 (Hot Option)

- Falling Temp.: MCP9503/4 (Cold Option)

• Output Configuratio n Opt ion s:

- 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

Description

Microchip Technology’s MCP9501/2/3/4 family of
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 provide user
selectable 2°C and 10°C (typical) switch hysteresis,
and various output configurations. The MCP9501/2
outputs switch for rising temperatures while the
MCP9503/4 switch for falling temperature, with the
relative hysteresis at the set thresholds. This family of
devices is also available with Active-High Push-Pull
and Active-Low Open-Drain outputs, the MCP9502/4
and the MCP9501/3, respectively. The Push-Pull
output is ideal for a microcontroller interface while the
Open-Drain output ca n be used for le vel shif ting, wired­OR configuration, or as a heater on/off switch.

The MCP9501/2/3/4 operate from 2.7V to 5.5V su ppl y.
This family is available with space saving 5-lead
SOT-23 package.

Package Types

MCP9501/2/3/4

SOT-23-5
GND
GND

Hyst

1
2
3

5

4

Output

V

DD

50%

TA = -35°C to 125°C

= 4.1V

V

DD

40%

32 Units

30%

20%

Occurrences

10%

0%

-4.0

© 2011 Microchip Technology Inc. DS22268A-page 1

-2.0

Temperature Accuracy (°C)

0.0

2.0

4.0

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°.

HOT

COLD

MCP9502, Hot-Option (Push-Pull, Active-High)

V

Output

COLD HOT

T

HYST TSET

Hysteresis

T

HYST TSET

Temperature

Note: Available temperature thresholds for

Temperature

MCP9503, Cold-Option (Open-Drain, Active-Low)

V

Output

Hysteresis

Note: Available temperature thresholds for

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°.

Option P or for rising temperature only:
+5°C, +15°C, +25°C.

Option N or for falling temperature only :

-35°C, -25°C, -15°C, -5°C.

T

COLD HOT

SET THYST

Temperature

MCP9504, Cold-Option (Push-Pull, Active-High)

V

Output

COLD

DS22268A-page 2 © 2011 Microchip Technology Inc.

Hysteresis

T

SET THYST

HOT

Note: Available temper ature thresholds for

Option P or for rising temperature
only: +5°C, +15°C, +25°C.

Note: Available temper ature thresholds for

Option N or for falling temperature
only: -35°C, -25°C, -15°C, -5°C.

Note: Contact Microchip for all other

Temperature

threshold options.

MCP9501/2/3/4

1.0 ELECTRICAL CHARACTERISTICS

Junction Temperature (T

ESD protection on all pins (HBM:MM)................. (4 kV/400V)

Latch-Up Current at each pin (25°C) ....................... ±200 mA

)..........................................+150°C

J

Absolute Maximum Ratings †

VDD.................................................................................. 6.0V

Voltage at all Input/Output pins...............GND – 0.3V to 6.0V

Input/Output Current .....................................................20 mA

Storage temperature.....................................-65°C to +150°C

Ambient temp. with power applied................-40°C to +125°C

†Notice: Stresses above those listed under “Maximum
ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.

DC CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, TA = -40°C to +125°C, and

GND = Ground.

Parameters Sym Min Typ Max Unit Conditions

Sensor Accuracy

-15°C ≤ T

-40°C ≤ T

Power Supply

Operating Voltage V
Operating Current I
Line-Regulation Δ°C/ΔV— 0.2 —°C/VVDD = 2.7V to 5.5V

Hysteresis

Trip Point Hyste resis T

Hysteresis Select Input V

Open-Drain Output Leakage I
Output V oltage High V
Output V oltage Low V
Turn On Time T
SOT23-5 t

Note 1: This specification is tes ted at mi d supply of 4.1V f or op timum op era tion ac ross the s upply volt age range o f

≤ +75°C -4 ±1 +4 °C Note 1

A

≤ +125°C -6 ±2 6 °C

A

DD

DD

HYST

2.7 — 5.5 V
—2540µA

—2—°CHYST = GND
—10—°CHYST = V

V

I

Leak
Leak

RES

IH
IL

OH
OL
ON

0.8V

DD

——0.2VDDV
—0.1—µA
— 0.1 10 µA MCP9501/3

0.8V

DD

——0.2VDDVI
—1—ms
— 1.7 — s Time to 63% (89°C).

——V

——VI

2.7V to 5.5V.

DD

= 5 mA (MCP9502/4)

OUT

= 5 mA

OUT

+25°C (Air) to +125°C
(oil bath)

TEMPERATURE CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, TA = -40°C to +125°C, and

GND = Ground.

Parameters Sym Min Typ Max Units Conditions

Temperature Ranges

Specified Temperature Range T
Operating Temperature Range T
Storage Temperature Range T

A
A
A

Thermal Package Resistances

Thermal Resistance, 5L-SOT23 θ

JA

Note 1: Operation in this range must not cause T

© 2011 Microchip Technology Inc. DS22268A-page 3

-40 — +125 °C (Note 1)

-40 — +125 °C

-65 — +150 °C

— 220.7 — °C/Ω

to exceed Maximum Junction Temperature (+150°C).

J

MCP9501/2/3/4

V

V

V

V

V

V

V

V

V

V

2.0 TYPICAL PERFORMANCE CURVES

Note: The graphs and t ables provided following thi s n ote are a statistical s umm ar y b as ed on a limited number of

samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.

Note: Unless otherwise indicated, VDD = 2.7V to 5.5V, TA = -40°C to + 125°C, GND = Ground , R
(MCP9501/3 only) and 0.1 µF bypass capacitor.

6.0

4.0

2.0

Spec. Limits

+ St. Dev.
Average

- St. Dev.

0.10

0.08

0.06

HYST Input Pin

0.0

-2.0

-4.0

Temperature Accuracy (°C)

-6.0

VDD = 4.1V
32 units

-40-200 20406080100120
(°C)

T

A

FIGURE 2-1: Temperature Accuracy.

4.0

3.5

3.0

HYST = V

2.5

2.0

, Hysteresis (°C)

SS

1.5

1.0

HYST = V

0.5

SS

HYST = V

DD

0.0

-40-200 20406080100120
(°C)

T

A

14.0

13.0

12.0

11.0

10.0

9.0

8.0

7.0

6.0

HYST = V

DD

, Hysteresis (°C)

0.04

Leakage (µA)

0.02

Open-Drain Output
(MCP9501/03 only)

0.00

-40-200 20406080100120
T

(°C)

A

FIGURE 2-4: Leakage vs. Temperature.

20%

15%

)

VOH, VDD= 5.5

DD

(% of V

OL

V

10%

5%

VOH, VDD= 4.1
VOH, VDD= 2.7

VOL, VDD = 5.5
VOL, VDD = 4.1
VOL, VDD = 2.7

0%

-40-200 20406080100120

T

(°C)

A

FIGURE 2-5: VOL,VOH vs. Temperature.

FIGURE 2-2: Hysteresis vs. Temperature.

40

35

30

VDD = 5.5
VDD = 4.1
VDD = 2.7

25

(µA)

DD

I

20

15

10

-40-200 20406080100120
(°C)

T

A

FIGURE 2-3: Supply Current vs.

3.0

V

POR

Hysteresis

)
V

(V)

(

R
O

POR

P

V

V

2.5

2.0

1.5

1.0

0.5

0.0

-40 -20 0 20 40 60 80 100 120
(°C)

T

A

FIGURE 2-6: Power On Reset Threshold vs. Temperature.

Temperature.

PULL-UP

= 10 kΩ

100%

V

95%

OH

(% of V

90%

DD

)

85%

80%

105

V

POR

95

P
O
R

Hysteresis (mV)

H

85

y

s

t

e

r

75

e

s

i

s

65

(

m
V

)

55

45

Hysteresis (mV)

POR

V

DS22268A-page 4 © 2011 Microchip Technology Inc.

MCP9501/2/3/4

4.0-2.0

0.0

2.0

4.0

4.0-2.0

0.0

2.0

4.0

4.0-2.0

0.0

2.0

4.0

4.0-2.0

0.0

2.0

4.0

4.0-2.0

0.0

2.0

4.0

4.0-2.0

0.0

2.0

4.0

Note: Unless otherwise indicated, VDD = 2.7V to 5.5V, TA = -40°C to + 125°C, GND = Ground , R

(MCP9501 only) and 0.1 µF bypass capacitor.

60%

TA= -15\C

°

= 4.1V

V

DD

50%

492 Units

s

40%

e

c
n

e

r

30%

r
u

c

c

20%

O

Occurrences

10%

0%

-4.0

-

-2.0

T emperature A ccuracy (°C)

0.0

TA (°C)

2.0

FIGURE 2-7: Temperature Accuracy Distribution at -15°C.

60%

TA= 5\C

°

= 4.1V

V

DD

50%

480 Units

s

40%

e

c
n

e

r

30%

r
u

c

c

20%

O

Occurrences

10%

0%

-4.0

-

-2.0

T emperature A ccuracy (°C)

0.0

TA (°C)

2.0

FIGURE 2-8: Temperature Accuracy Distribution at 5°C.

s

e

c
n

e

r

r
u

c

c

Occurrences

O

60%

50%

40%

30%

20%

TA= 65\C
V

= 4.1V

DD

480 Units

°

10%

0%

-4.0

-

-2.0

T emperature A ccuracy (°C)

TA (°C)

0.0

2.0

FIGURE 2-9: Temperature Accuracy Distribution at 65°C.

4.0

4.0

4.0

60%

50%

s

40%

e

c
n

e

r

30%

r
u

c

c

20%

O

Occurrences

Occurrences

TA= 105\C
V

= 4.1V

DD

480 Units

°

°

10%

0%

0.0

0.0

-4.0

-4.0

-4.0

-

-2.0

-2.0

-2.0

T emperature A ccuracy (°C)

0.0

TA (°C)

TA (°C)

TA (°C)

FIGURE 2-10: Temperature Accuracy Distribution at 105°C.

Occurrences

s

e

c
n

e

r

r
u

c

c
O

60%

50%

40%

30%

20%

10%

0%

TA= 115\C
V

= 4.1V

DD

480 Units

-4.0

-

°

°

-2.0

T emperature A ccuracy (°C)

0.0

T

(°C)

A

FIGURE 2-11: Temperature Accuracy Distribution at 115°C.

60%

TA= 125\C

°

V

= 4.1V

DD

50%

480 Units

s

40%

e

c
n

e

r

30%

r
u

c

c

20%

O

Occurrences

10%

0%

-4.0

-

-2.0

T emperature A ccuracy (°C)

0.0

TA (°C)

FIGURE 2-12: Temperature Accuracy Distribution at 125°C.

PULL-UP

2.0

2.0

2.0

2.0

2.0

= 10 kΩ

4.0

4.0

4.0

4.0

4.0

© 2011 Microchip Technology Inc. DS22268A-page 5

MCP9501/2/3/4

3.0 PIN DESCRIPTIONS

TABLE 3-1: PIN FUNCTION TABLE

MCP9501/2/3/4

SOT-23-5

1 GND Ground
2 GND Ground (must be connected to ground)
3 HYST Hysteresis Selection Input:

4V
5 Output Outp ut Op tio ns:

Symbol Description

HYST = GND → Hysteresis is 2°C (typical)

DD

HYST = V

Power pin

MCP9501 → Open-Drain, Active-Low Output (Hot-Opti on)
MCP9502 → Push-Pull, Active-High Output (Hot-Optio n)
MCP9503 → Open-Drain, Active-Low Output (Cold-Option)
MCP9504 → Push-Pull, Active-H igh Output (Cold-O pt ion )

DD

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 to select output hysteresis. Either 2°C
(HYST = GND) or 10°C (HYST = V
hysteresis can be selected.

DD)

of typical

→ Hysteresis is 10°C (typical)

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 trigg ered when tem pe r atu re ris es or fa ll s
beyond the programmed trip temperature threshold.
MCP9501/3 require an external pull-up resistor.

DS22268A-page 6 © 2011 Microchip Technology Inc.