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Part: MAX6512UT045
Category:
Sensors
-> Temperature Sensors
Description: MAX6511, MAX6512, MAX6513 Low-Cost, Remote Sot Temperature Switches
Company: Maxim Integrated Products
Datasheet: Download MAX6512UT045 datasheet File size : 368 kB
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Datasheet text preview:
19-1819; Rev 0; 10/00
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 temperature crosses a factory-programmed threshold. Available trip thresholds are from +45°C to +125°C in 10°C increments. Accuracy is within ±3°C (TA = -5°C to +55°C) or ±5°C (TA = -40°C to +85°C). Hysteresis is pin selectable to 5°C or 10°C. The MAX6511 has an active-low CMOS output and the M A X 6 5 1 3 has an active-high CMOS output. The M A X 6 5 1 2 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 s u p p l y current. They are available in a small 6-pin SOT23 package.
Features
o Continuously Measure External Junction Temperature o Factory-Programmed Temperature Threshold from +45°C to +125°C in 10°C Increments o Insensitive to Series Parasitic Resistance o Active-Low CMOS Output (MAX6511) or OpenDrain Output for Overtemperature Alarm (MAX6512) or Active-High Output (MAX6513) for Direct Fan Control o <100ms Response Time o 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) o Pin-Selectable 5°C or 10°C Hysteresis o 400µA Average Current Consumption o +3.0V to +5.5V Supply Range o 6-Pin SOT23 Package
MAX6511/MAX6512/MAX6513
________________________Applications
CPU Temperature Monitoring in High-Speed Computers Multichip Modules Battery Packs Temperature Control Temperature Alarms Fan Control
PART*
Ordering Information
TEMP. RANGE PINOUTPUT PACKAGE CMOS (Active-Low)
MAX6511EUT_ _ _ -T -40°C to +85°C 6 SOT23-6
MAX6512EUT_ _ _ -T -40°C to +85°C 6 SOT23-6 Open-Drain MAX6513EUT_ _ _ -T -40°C to +85°C 6 SOT23-6 CMOS (Active-High)
Pin Configuration
TOP VIEW
VDD 1 6 DXP
*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 SOT23-6 package with a +65°C threshold.
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. ________________________________________________________________ Maxim Integrated Products 1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
Low-Cost, Remote SOT Temperature Switches MAX6511/MAX6512/MAX6513
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VDD) .....-0.3V to +6V DXP, DXN, HYST, TOVER (MAX6513), TOVER (MAX6511/MAX6512) .......-0.3V to (VDD + 0.3V) TOVER (MAX6513), TOVER (MAX6511) Output Current ....-1mA/+50mA DXN Input Current.........-1mA/+50mA Current (all other pins)......±20mA Continuous Power Dissipation (TA = +70°C) 6-Pin SOT23-6 (derate 9.1mW/°C above +70°C) ........727mW Operating Temperature Range ...-40°C to +85°C Storage Temperature Range .....-65°C to +150°C Junction Temperature ......+150°C Lead Temperature Vapor Phase (60s) .......+215°C Infrared (15s) ......+220°C
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.
ELECTRICAL CHARACTERISTICS
(VDD = +3.0V to +5.5V, CS = 2200pF, TA = -40°C to +85°C, TREMOTE = +45°C to +125°C (Note 1), unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER Supply Voltage Range Supply Current Temperature Threshold Accuracy (Note 3) Power-Supply Sensitivity for Temperature Trip Point Temperature Threshold Hysteresis Response Time Input Voltage High Input Voltage Low Output Voltage High Output Voltage Low Maximum DXP Source Current Minimum DXP Source Current VIH VIL VOH VOL MAX6511/MAX6513, IOUT = 1mA IOUT = 1mA 0.4V VDXP 2V, DXN = GND 0.4V VDXP 2V, DXN = GND 270 9 VDD - 0.2 0.2 VDD 0.2 0.2 THYST HYST = VIL HYST = VIH SYMBOL VDD IDD TTH TA = -5°C to +55°C TA = -40°C to +85°C -3.0 -5.0 -0.6 5 10 70 120 CONDITIONS MIN 3.0 400 TYP MAX 5.5 600 +3.0 +5.0 UNITS V µA °C °C/V °C ms V V V V µA µA
Note 1: TREMOTE refers to the temperature of the remote-sensing junction. TA refers to the temperature of the MAX6511/MAX6512/ MAX6513 package. Note 2: All parameters are 100% production tested at TA = +25°C. Specifications over temperature limits are guaranteed by design. Note 3: This parameter is guaranteed by design to ±3.5 sigma.
2
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Low-Cost, Remote SOT Temperature Switches
Typical Operating Characteristics
(VDD = +3.3V, CS = 2200pF, TA = +25°C, unless otherwise noted.)
MAX6511/MAX6512/MAX6513
SUPPLY CURRENT vs. AMBIENT TEMPERATURE
MAX6511 toc01
TEMPERATURE TRIP THRESHOLD ERROR vs. AMBIENT TEMPERATURE TA
MAX6511 toc02
TEMPERATURE TRIP THRESHOLD ERROR vs. CS CAPACITANCE
TEMPERATURE TRIP THRESHOLD ERROR (°C) 12 10 8 6 4 2 0 -2 -4 0 10 20 30 40 50 60
MAX6511 toc03
TEMPERATURE TRIP THRESHOLD ERROR (°C)
440 420 SUPPLY CURRENT (µA) 400 380 360 340 320 300 -40 -15 10 35 60 (NOTE: SUPPLY CURRENT INCLUDES EXTERNAL DIODE-CONNECTED TRANSISTOR)
0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 -1.2 -1.4 -1.6 -60 -40 -20 0
14
85
20 40 60 80 100 120 140
AMBIENT TEMPERATURE TA (°C)
AMBIENT TEMPERATURE TA (°C)
CS CAPACITANCE (nF)
TEMPERATURE TRIP THRESHOLD ERROR vs. SERIES RESISTANCE
TEMPERATURE TRIP THRESHOLD ERROR (°C)
MAX6511 toc04
TEMPERATURE TRIP THRESHOLD vs. SUPPLY VOLTAGE
TEMPERATURE TRIP THRESHOLD ERROR (°C) 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 -1.2 -1.4 -1.6 -1.8 3.0 3.5 4.0 4.5 5.0 5.5
MAX6511 toc05
1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 0
0.4
20 40 60 80 100 120 140 160 180 200 SERIES RESISTANCE ()
SUPPLY VOLTAGE (V)
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