MAX6511 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – Low-Cost, Remote SOT Temperature Switches

19-1819; Rev 2; 10/04
Low-Cost, Remote SOT Temperature Switches
General Description
The MAX6511/MAX6512/MAX6513 are fully integrated,
remote temperature switches that use an external P-N
junction (typically a diode-connected transistor) as the
sensing element to measure the remote temperature.
These devices assert a logic signal when the tempera-
ture crosses a factory-programmed threshold. Available
trip thresholds are from +45°C to +125°C in 10°C incre-
ments. Accuracy is within ±3°C (T_A = -5°C to +55°C) or
±5°C (T_A = -40°C to +85°C). Hysteresis is pin selec-
table to 5°C or 10°C.
The MAX6511 has an active-low CMOS output and the
MAX6513 has an active-high CMOS output. The
MAX6512 has an open-drain output. The output is
asserted when the temperature exceeds the threshold
value. The active-low open-drain output is intended to
interface with a microprocessor (µP) reset or interrupt
input. The active-high CMOS output can directly drive a
power FET to control a cooling fan.
The MAX6511/MAX6512/MAX6513 operate from a
+3.0V to +5.5V supply and typically consume 400µA of
supply current. They are available in the small 6-pin
SOT23. The MAX6513 is also available in a 6-pin lead-
free TDFN package.
________________________Applications
CPU Temperature Monitoring in High-Speed
Computers
Multichip Modules
Battery Packs
Temperature Control
Temperature Alarms
Fan Control
TOP VIEW
Pin Configuration
Features
♦ Continuously Measure External Junction
Temperature
♦ Factory-Programmed Temperature Threshold from
+45°C to +125°C in 10°C Increments
♦ Insensitive to Series Parasitic Resistance
♦ Active-Low CMOS Output (MAX6511) or Open-Drain
Output for Overtemperature Alarm (MAX6512) or
Active-High Output (MAX6513) for Direct Fan Control
♦ <100ms Response Time
♦ Accuracy
±3°C (TREMOTE ₌ +45°C to +125°C, TA = -5°C to +55°C)
±5°C (TREMOTE ₌ +45°C to +125°C, TA = -40°C to +85°C)
♦ Pin-Selectable 5°C or 10°C Hysteresis
♦ 400µA Average Current Consumption
♦ +3.0V to +5.5V Supply Range
♦ 6-Pin SOT23 Package
♦ 6-Pin TDFN Package (Lead Free)
Ordering Information
PART*
TEMP RANGE ^PIN-
OUTPUT
PACKAGE
MAX6511UT_ _ _ -T
-40°C to +85°C
6 SOT23-6
CMOS
(active low)
MAX6512UT_ _ _ -T
MAX6513_T_ _ _ -T
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
6 SOT23-6 Open-drain
6 TDFN
CMOS
6 SOT23-6 ^{(active high)}
*These parts are offered in nine standard temperature versions
with a minimum order of 2500 pieces. To complete the suffix
information, select an available trip point in degrees centigrade
from the device marking codes table. For example, the
MAX6511UT065-T describes a MAX6511 in a 6-pin SOT23
package with a +65°C threshold.
V_DD 1
6 DXP
GND 2
MAX6511
MAX6512
MAX6513
5 DXN
HYST 3
4 TOVER (TOVER)
( ) ARE FOR MAX6513 SOT23 ONLY.
Typical Operating Circuit appears at end of data sheet.
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