Rainbow Electronics MAX6510 User Manual

MAX6509/MAX6510

Resistor-Programmable

SOT Temperature Switches

________________________________________________________________ Maxim Integrated Products 1

19-1617; Rev 1b; 9/00

________________General Description

The MAX6509/MAX6510 are fully integrated, resistor­programmable temperature switches with thresholds
set by an external resistor. They require only one exter­nal resistor to set the temperature threshold within a
wide -40°C to +125°C temperature range. The MAX6509
provides an open-drain output. The MAX6510 features
three selectable output options: active-low, active-high,
and open drain with an internal pull-up resistor.

These switches operate with a +2.7V to +5.5V single
supply while providing a temperature threshold accura­cy of ±0.5°C (typ) or ±4.7°C (max). They typically con­sume 32µA supply current. Hysteresis is pin selectable
to 2°C or 10°C.

The MAX6509/MAX6510 are available in 5-pin and 6-pin
SOT23 packages, respectively.

________________________Applications

µP Temperature Monitoring in High-Speed
Computers

Temperature Control
Temperature Alarms
Fan Control
Automotive

____________________________Features

♦ ±0.5°C Threshold Accuracy

♦ ±4.7°C (max) Threshold Accuracy (-40°C to +125°C)

♦ Temperature Threshold Set by a 1% External

Resistor

♦ Set-Hot or Set-Cold Option

♦ Low 32µA Supply Current

♦ Open-Drain, Push-Pull Outputs;

Open-Drain with Internal Pull-Up Resistor

♦ Pin-Selectable 2°C or 10°C Hysteresis

♦ SOT23 Packages

Ordering Information

Pin ConfigurationsTypical Operating Circuit

*A minimum order of 2500 pc. is required for SOT packages.
**See Table 1 for selectable output options.

†Contact factory for availability.

TOP

MARK

ADNT

ADNU

AAHA

AAHB6 SOT23-6-40°C to +125°C

†MAX6510HAUT-T**

5 SOT23-5-40°C to +125°CMAX6509HAUK-T

6 SOT23-6-40°C to +125°C

MAX6510CAUT-T**

5 SOT23-5

PIN-

PACKAGE

TEMP. RANGE

-40°C to +125°C

†MAX6509CAUK-T

PART*

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

+2.7V TO +5.5V

0.1µF

V

R

SET

( ) ARE FOR MAX6510.

CC

MAX6509

SET

MAX6510

GND

OUT

(OUT)

GND(OUTSET)

HYST

INT

V

µP

GND

CC

TOP VIEW

15SET

MAX6509

2

GND

34

OUT

SOT23-5

V

CC

HYST

SET

16V

MAX6510

2

GND

34

SOT23-6

5

CC

OUTSET

HYSTOUT, OUT

µA

MAX6509/MAX6510

Resistor-Programmable
SOT Temperature Switches

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V

CC

= +2.7V to +5.5V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

Note 1: 100% production tested at TA= +25°C. Specifications over temperature limits are guaranteed by design.

Reference to GND Supply Voltage (V

CC

).................-0.3V to +6V

OUT (MAX6509) ....................................................-0.3V to +6V

OUT, OUT (MAX6510).............................-0.3V to (V

CC

+ 0.3V)

SET, HYST, OUTSET ..................................-0.3V to (V

CC

+ 0.3V)

Output Current (all pins) .....................................................20mA

Input Current (all pins) ........................................................20mA

Continuous Power Dissipation (T

A

= +70°C)

5-Pin SOT23 (derate 7.1mW/°C above +70°C).............571mW

6-Pin SOT23 (derate 8.7mW/°C above +70°C).............696mW

Operating Temperature Range .........................-40°C to +125°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

5.5

±0.1

V

OUTSET

= V

CC

OUTSET = unconnected

OUT, active high

OUT, open drain

V

OUTSET

= GND

OUT, active low

V

OUT

= V

CC

(MAX6509)

I

OUT

= 5mA

I

OUT

= 5mA, OUTSET = GND or V

CC

±0.5 ±3.7

TA= -40°C to 0°C

0.85 · V

CC

0.72 · V

CC

0.55 ·V

CC

V

OUTSET Current I

OUTSET

-5.5

µAMAX6510

OUTSET Voltage V

OUTSET

0.2 · V

CC

MAX6510

HYST Input Threshold

HYST Input Leakage

1

µA

V

IH

VCC- 0.4

V

Output Voltage High V

OH

VCC- 0.4

V

Open-Drain Output Leakage
Current

Output Voltage Low V

OL

0.3

V

I

OUT

10

µA

OUT Impedance to V

CC

V

IL

0.4

60 100 160

kΩOUTSET = unconnected (MAX6510)

Temperature Threshold
Hysteresis

T

HYST

2

°C

10

HYST = GND

HYST = V

CC

Temperature Threshold
Accuracy

Supply Current I

CC

32 50

µA

∆T

TH

±0.5 ±4.7

°C

MAX6509

TA= 0°C to +125°C

PARAMETER SYMBOL MIN TYP MAX UNITS

Supply Voltage Range V

CC

2.7 5.5

V

CONDITIONS

47 80

OUTSET = GND or VCC(MAX6510)

97 165

OUTSET = unconnected, OUT = low

MAX6509/MAX6510

Resistor-Programmable

SOT Temperature Switches

_______________________________________________________________________________________ 3

__________________________________________Typical Operating Characteristics

(VCC= +5V, R

PULL-UP

= 10kΩ (MAX6509 only), TA= +25°C, unless otherwise noted.)

SUPPLY CURRENT vs. TEMPERATURE

50

45

40

35

30

25

SUPPLY CURRENT (µA)

20

15

10

VCC = +3.3V

R

= 0

SET

OUTSET = GND (MAX6510)

-50 0-25 25 50 75 100 125

R

SET

(T

100

90

80

70

60

(kΩ)

50

SET

R

40

30

20

10

0

0 20406080100120140

VCC = +5V

VCC = +2.7V

TEMPERATURE (°C)

vs. TEMPERATURE
= 0°C TO +125°C)

A

TEMPERATURE (°C)

MAX6509/10 toc01

MAX6509/10 toc03

R

vs. TEMPERATURE

SET

= -40°C TO 0°C)

(T

160

150

140

130

(kΩ)

SET

R

120

110

100

90

-40 -30 -25-35 -20 -15 -10 -5 0

A

TEMPERATURE (°C)

TRIP THRESHOLD OFFSET vs.

0.20

0.15

0.10

0.05

0

-0.05

SET POINT OFFSET (°C)

-0.10

-0.15

-0.20

-50 0-25 25 50 75 100 125

TEMPERATURE

VCC = +2.7V

VCC = +3.3V

VCC = +5V

VCC = +3.3V

VCC = +2.7V

TEMPERATURE (°C)

MAX6509/10 toc02

MAX6509/10 toc04

TRIP POINT ERROR vs.

SET TEMPERATURE

1.0

0.9

0.8

0.7

0.6

0.5

0.4

ERROR (°C)

0.3

0.2

0.1

0

-40 -25 0 25 50 75 100 125

VCC = +5V
1% R

SET

SET RESISTOR TEMPCO

200ppm

R

SET

50ppm

TEMPERATURE (°C)

MAX6509/10 toc05

100ppm

HYSTERESIS vs. TEMPERATURE

12

HYST = V

10

8

6

HYSTERESIS (°C)

4

2

0

-40 25 50-25 0 75 100 125

TEMPERATURE (°C)

CC

HYST = GND

MAX6509/10 toc06