General Description

The MAX6505–MAX6508 temperature switches have dual

logic outputs that assert when the die temperature cross-

es their trip thresholds. Trip thresholds are factory pro-

grammed to convenient temperatures in 5°C increments.

The MAX6505/MAX6506 have an ALARM output that

asserts when the temperature is above the factory-pro-

grammed thresholds (available from -40°C to +125°C).

They also have a WARN output that asserts when the

temperature is several degrees below the ALARM thresh-

old. The difference between the ALARM and WARN

thresholds (

+20°C, or +30°C. The MAX6505’s logic outputs are open

drain, while the MAX6506’s logic outputs are push-pull.

The MAX6507 has open-drain outputs (OVER, OK), and

the MAX6508 has push-pull outputs (OVER, OK), each

with two factory-programmed threshold temperatures

+125°C. The overtemperature output asserts when the

The MAX6505–MAX6508 are accurate to ±0.5

°C (typ),

±5.5

°C (max). Operating from a +2.5V to +5.5V supply,

these low-cost devices typically consume 30µA supply

current and require no external components for setting

trip points. The MAX6505–MAX6508 are available in a

6-pin SOT23 package.

________________________Applications

µP Temperature Monitoring in High-Speed

Computers

Temperature Control

Temperature Alarms

Fan Control

Features

♦ ±0.5°C (typ) Threshold Accuracy Over Full

Temperature Range

♦ No External Components Required

♦ Low Cost

♦ 30µA (typ) Supply Current

♦ Factory-Programmed Thresholds from -40°C to

+125°C in 5°C Increments

♦ Open-Drain Outputs (MAX6505/MAX6507),

Push-Pull Outputs (MAX6506/MAX6508)

♦ Pin Selectable 2°C, 10°C Hysteresis

(MAX6507/MAX6508)

♦ Pin Selectable +5°C, +10°C, +20°C, +30°C

♦ SOT23 Package

Note: To complete the suffix information for the MAX6505/

MAX6506, add P or N for positive or negative trip tempera-

ture, and select an available trip point in degrees centigrade.

For example, the MAX6505UTP055+T describes a MAX6505 in

a SOT23 package with a +55°C threshold (Table 3). Contact

the factory for pricing and availability of temperature versions

(minimum order 10,000 pieces).

To complete the suffix information for MAX6507/MAX6508, see

Table 4.

+

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

T = Tape and reel.

Dual Trip SOT Temperature Switches

________________________________________________________________

Maxim Integrated Products

1

Pin Configurations

19-1712; 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.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX6505UT_ _ _ _+T

-40°C to +125°C 6 SOT23

MAX6506UT_ _ _ _+T

-40°C to +125°C 6 SOT23

MAX6507UT_ _ _ _+T

-40°C to +125°C 6 SOT23

MAX6508UT_ _ _ _+T

-40°C to +125°C 6 SOT23

Selector Guide appears at end of data sheet.

TOP VIEW

GND

S1

16

+

5

S0

MAX6505

MAX6506

SOT23

2

34

WARN

(WARN)

ALARM

(ALARM)

( ) ARE FOR MAX6506.

GND

S0

16

5

N.C.

MAX6507

MAX6508

SOT23

2

34

OK

(OK)

OVER

(OVER)

( ) ARE FOR MAX6508.

+

Typical Operating Circuits appear at end of data sheet.