MAXIM MAX6516, MAX6519 User Manual

General Description

The MAX6516–MAX6519 low-cost, fully integrated temperature switches assert a logic signal when their die temperature crosses a factory-programmed threshold. Operating from a 2.7V to 5.5V supply, these devices feature a fixed voltage reference, an analog temperature sensor, and a comparator. They are available with factory-trimmed temperature trip thresholds from -45°C to +115°C in 10°C increments, and are accurate to ±0.5°C (typ). These devices require no external components and typically consume 22µA of supply current. Hysteresis is pin selectable at 2°C or 10°C.

The MAX6516–MAX6519 are offered with hot-temperature thresholds (+35°C to +115°C), asserting when the temperature is above the threshold, or with cold-temperature thresholds (-45°C to +15°C), asserting when the temperature is below the threshold.

These devices provide an analog output proportional to temperature and are stable with any capacitive load up to 1000pF. The MAX6516–MAX6519 can be used over a range of -35°C to +125°C with a supply voltage of 2.7V to 5.5V. For applications sensing temperature down to

-45°C, a supply voltage above 4.5V is required.

The MAX6516 and MAX6518 have an active-high, push-pull output. The MAX6517 and MAX6519 have an active-low, open-drain output. These devices are available in a space-saving 5-pin SOT23 package and operate over the -55°C to +125°C temperature range.

Applications

Features

♦ High Accuracy ±1.5°C (max) Over -15°C to +65°C

Temperature Range

♦ Low Power Consumption—22µA Typical Current

♦ Factory-Programmed Thresholds from -45°C to

+115°C in 10°C Increments

♦ Analog Output to Allow Board-Level Testing

♦ Open-Drain or Push-Pull Outputs

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

MAX6516–MAX6519

Low-Cost, 2.7V to 5.5V, Analog Temperature

Sensor Switches in a SOT23

________________________________________________________________

Maxim Integrated Products

Ordering Information

MAX6517

GND

MICROCONTROLLER

INT

ADC IN

GND HYST

OUT

TOVER

0.1μF

100kΩ

Typical Operating Circuit

19-3007; Rev 1; 2/11

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

Pin Configurations

Fan Control

Test Equipment

Temperature Control

Temperature Alarms

Over/Undertemperature Protection

Notebook, Desktop PCs

RAID

Servers

Note: These parts are offered in 16 standard temperature versions with a minimum order of 2500 pieces. To complete the suffix information, add P or N for positive or negative trip temperature, and select an available trip point in degrees centigrade. For example, the MAX6516UKP065+T describes a MAX6516 in a 5-pin SOT23 package with a +65°C threshold. Contact the factory for pricing and availability.

Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

Functional Diagram appears at end of data sheet.

PART TEMP RANGE PIN-PACKAGE

MAX6516UK _ _ _ _ +T -55°C to +125°C 5 SOT23

MAX6517UK _ _ _ _ +T -55°C to +125°C 5 SOT23

MAX6518UK _ _ _ _ +T -55°C to +125°C 5 SOT23

MAX6519UK _ _ _ _ +T -55°C to +125°C 5 SOT23

TOP VIEW

GND

15OUT

(MAX6516)

MAX6517

(TOVER) TOVER

GND

15OUT

(MAX6516)

MAX6517

(TUNDER) TUNDER

HYST

SOT23

15HYST

(MAX6518)

GND

OUT

MAX6519

SOT23

(TOVER) TOVER

HYST

SOT23

15HYST

(MAX6518)

GND

OUT

MAX6519

SOT23

(TUNDER) TUNDER

MAX6516–MAX6519

Low-Cost, 2.7V to 5.5V, Analog Temperature Sensor Switches in a SOT23

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= 2.7V to 5.5V, R

PULLUP

= 100kΩ (open-drain output only), TA= -55°C to +125°C, unless otherwise noted. Typical values are at

= +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 are guaranteed by design. Note 2: The MAX6516–MAX6519 are available with internal factory-programmed temperature trip thresholds from -45°C to +115°C

in 10°C increments.

Note 3: V

must be greater than 4.5V for a switching threshold of -45°C.

Note 4: Guaranteed by design.

All voltages are referenced to GND. V

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

TOVER, TUNDER (open drain)................................ -0.3V to +6V

TOVER, TUNDER (push-pull) .................... -0.3V to (V

+ 0.3V)

OUT, HYST .................................................-0.3V to (V

+ 0.3V)

OUT Short to GND .........................................................Indefinite

Continuous Power Dissipation (T

= +70°C)

SOT23 (derate 3.1mW/°C above +70°C).....................247mW

Operating Temperature Range ........................-55°C to +125°C

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

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

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

Soldering Temperature (reflow) .......................................+260°C

Supply Voltage Range V

Supply Current I

Temperature Threshold Accuracy (Note 2)

Temperature Threshold Hysteresis

HYST Input Logic Level (Note 4)

Logic Output Voltage High (Push-Pull)

Logic Output Voltage Low (Push-Pull and Open Drain)

Open-Drain Output Leakage Current

OUT TEMPERATURE SENSITIVITY

Error to Equation: OUT = 1.8015V - 10.62mV(T - 30)

- 1.1µV (T - 30)

Sensor Gain -10.62 mV/°C

OUT Capacitive Load (Note 4) 1000 pF

OUT Load Regulation

OUT Line Regulation 0.04 0.3 °C/V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Hot-temperature thresholds (+35°C to +115°C)

Cold-temperature thresholds (-45°C to +15°C)

-15°C to +65°C -1.5 +1.5

+75°C to +115°C -2.5 +2.5

-45°C to -25°C (Note 3) -3 +3

HYST = V

HYST = GND 10

SOURCE

SINK

-30°C to +125°C, VCC = 2.7V to 5.5V -2 +2

-55°C to -30°C (Note 3) -5 +2

0 < I

-1µA < I

= 500µA, V

= 800µA, V

= 1.2mA, V

= 3.2mA, V

= 2.7V, open-drain output = 5.5V 10 nA

< 40µA 0.24

OUT

< 0 0.02

OUT

> 2.7V 0.8 x V

> 4.5V VCC - 1.5

> 2.7V 0.3

> 4.5V 0.4

ΔT

HYST

2.7 5.5 V

22 40

0.8 x V

0.2 x V

µA

°C

MAX6516–MAX6519

Low-Cost, 2.7V to 5.5V, Analog Temperature

Sensor Switches in a SOT23

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Typical Operating Characteristics

(VCC= 5V, TA = +25°C, unless otherwise noted.)

TRIP-THRESHOLD ACCURACY

SAMPLE SIZE = 147

1.0

TO 1.25

MAX6516 toc01

PERCENTAGE OF PARTS SAMPLED (%)

-1.25

TO -1.5

-0.75

TO -1.0

-0.25 TO 0.25

TO -0.5 ACCURACY (°C)

0.5

TO 0.75

SUPPLY CURRENT vs. TEMPERATURE

SUPPLY CURRENT (μA)

-55 125 TEMPERATURE (°C)

MAX6516 toc04

105856545255-15-35

OUTPUT VOLTAGE vs. TEMPERATURE

2.75

2.50

2.25

2.00

1.75

(V)

OUT

1.50

1.25

1.00

0.75

0.50

-55 125 TEMPERATURE (°C)

OUTPUT VOLTAGE vs. SUPPLY VOLTAGE

1.8300 TA = +30°C

1.8250

1.8200

1.8150

1.8100

(V)

1.8050

OUT

1.8000

1.7950

1.7900

1.7850

1.7800

2.5 5.5 SUPPLY VOLTAGE (V)

TEMPERATURE ERROR

MAX6516 toc02

1058545 65-15 5 25-35

TEMPERATURE ERROR (°C)

-1

-2

-55 125

TOVER/TUNDER OUTPUT VOLTAGE HIGH

MAX6516 toc05

5.04.54.03.53.0

(V)

010

vs. TEMPERATURE

TEMPERATURE (°C)

vs. SOURCE CURRENT

(mA)

SINK

MAX6516 toc03

105856545255-15-35

MAX6516 toc06

987654321

TOVER/TUNDER OUTPUT VOLTAGE LOW

vs. SOURCE CURRENT

500

+25°C

400

300

(V)

200

100

010

(mA)

SINK

MAX6516 toc07

987654321

THERMAL STEP RESPONSE IN

PERFLOURINATED FLUID

2s/div

MAX6516 toc08

+25°C

+18.5°C/div

+100°C

THERMAL STEP RESPONSE IN

STILL AIR

10s/div

MAX6516 toc09

+18.5°C/div

+100°C

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