Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsMAX6505UTP085+T

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 (ΔT

) is pin selectable to +5°C, +10°C,

+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

OVER

and T

UNDER

) in the wide range of -40°C to

+125°C. The overtemperature output asserts when the

temperature is above T

OVER

. When the temperature is in

the desired window (less than T

OVER

and greater than

UNDER

), OK (OK) asserts.

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

ALARM

- T

WARN

(MAX6505/MAX6506)

♦ 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.

MAX6505–MAX6508

Dual Trip SOT Temperature Switches

________________________________________________________________

Maxim Integrated Products

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

5 S0

MAX6505

MAX6506

SOT23

WARN

(WARN)

ALARM

(ALARM)

( ) ARE FOR MAX6506.

GND

5 N.C.

MAX6507

MAX6508

SOT23

(OK)

OVER

(OVER)

( ) ARE FOR MAX6508.

Typical Operating Circuits appear at end of data sheet.

Summary of content (10 pages)

PAGE 1
9-1712; Rev 1; 2/11 Dual Trip SOT Temperature Switches The MAX6505–MAX6508 temperature switches have dual logic outputs that assert when the die temperature crosses their trip thresholds. Trip thresholds are factory programmed to convenient temperatures in 5°C increments. The MAX6505/MAX6506 have an ALARM output that asserts when the temperature is above the factory-programmed thresholds (available from -40°C to +125°C).
PAGE 2
MAX6505–MAX6508 Dual Trip SOT Temperature Switches ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC to GND) ..................................-0.3V to +6V S1, S0 to GND ............................................-0.3V to (VCC + 0.3V) All Other Pins to GND.................................-0.3V to (VCC + 0.3V) Input/Output Current, All Pins...........................................±20mA Continuous Power Dissipation (TA = +70°C) SOT23 (derate 8.7mW/°C above +70°C) ....................
PAGE 3
Dual Trip SOT Temperature Switches (VCC = +2.5V to +5.5V, RPULLUP = 100kΩ (MAX6505/MAX6507 only), TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C and VCC = +5V, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS Open-Drain Output Leakage Current Note 1: Note 2: Note 3: MIN TYP MAX VCC = 5.5V, VALARM = 5.5V, VWARN = 5.5V (MAX6505) 1 VCC = 5.5V, VOK = 5.5V, VOVER = 5.5V (MAX6507) 1 UNITS μA 100% production tested at TA = +25°C.
PAGE 4
Dual Trip SOT Temperature Switches MAX6505–MAX6508 Pin Description PIN MAX6505 MAX6506 1 FUNCTION MAX6508 -— -— WARN Open-Drain Active-Low Warning Output. WARN goes low when the die temperature exceeds TWARN = TALARM ΔTAW. Push-Pull Active-High Warning Output. WARN goes high when the die temperature exceeds TWARN = TALARM ΔTAW. -— 1 -— -— WARN 2 2 2 2 GND 3, 5 3, 5 -— -— S1, S0 -— -— 3 3 S0 4 4 4 4 VCC Supply Voltage Input. Bypass VCC to GND with a 0.1μF ceramic capacitor.
PAGE 5
Dual Trip SOT Temperature Switches The MAX6505–MAX6508 fully integrated temperature switches incorporate two temperature-dependent references and a comparator. One reference exhibits a positive temperature coefficient and the other a negative temperature coefficient. The temperature at which the two reference voltages are equal determines the temperature trip point. There are two versions, each of which has two logic outputs.
PAGE 6
MAX6505–MAX6508 Dual Trip SOT Temperature Switches Table 2. Hysteresis Selection PART MAX6505 MAX6506 MAX6507 MAX6508 +75°C TEMPERATURE -10°C TYPICAL THRESHOLD HYSTERESIS WARN CONDITIONS ALARM CONDITIONS 2°C — 5°C — — 10°C -— — -— — — ΔTWA = 5°C or 10°C ΔTWA = 20°C or 30°C — 2°C S0 = GND — — 10°C S0 = VCC — +2.5V TO +5.
PAGE 7
Dual Trip SOT Temperature Switches PART SUFFIX TRIP POINT (°C) TOP MARK MAX6505 UTN035 -35 MAX6505 UTN030 -30 MAX6505 UTN025 MAX6505 UTN020 MAX6505 TRIP POINT (°C) TOP MARK UTN035 -35 AALR UTN030 -30 AALS PART SUFFIX AAKK MAX6506 AAKL MAX6506 -25 AAKM MAX6506 UTN025 -25 AALT -20 AAKN MAX6506 UTN020 -20 AALU UTN015 -15 AAKO MAX6506 UTN015 -15 AALV MAX6505 UTN010 -10 AAKP MAX6506 UTN010 -10 AALW MAX6505 UTN005 -5 AAKQ MAX6506 UTN005 -5 AALX MAX6
PAGE 8
MAX6505–MAX6508 Dual Trip SOT Temperature Switches Table 4. MAX6507/MAX6508 Trip Temperature Code TRIP TEMPERATURE (°C) -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 HEX CODE* 82 87 8C 91 96 9B A0 A5 00 05 0A 0F 14 19 1E 23 28 2D 32 37 3C 41 46 4B 50 55 5A 5F 64 69 6E 73 78 125 7D *Two hex codes are used in the suffix. The first indicates the the low trip temperature and the second indicates the high trip temperature.
PAGE 9
Dual Trip SOT Temperature Switches VCC +2.5V TO +5.5V FAN +2.5V TO +5.5V R1 VCC S0 WARN MAX6505 S1 R2 VCC VCC INT S0 μP S1 SHDN ALARM GND GND WARN MAX6506 ALARM GND VCC INT VCC μP GND FAN +2.5V TO +5.
PAGE 10
MAX6505–MAX6508 Dual Trip SOT Temperature Switches Revision History REVISION NUMBER REVISION DATE 0 4/00 Initial release 2/11 Changed all leaded parts to lead(Pb)-free parts in the Ordering Information table; in the Absolute Maximum Ratings section changed the continuous power dissipation numbers (7.1mW/°C to 8.