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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX6515 Datasheet

(MAX6514 / MAX6515) Temperature Switches

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MAX6515 pdf
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19-3147; Rev 0; 1/04
Low-Cost, 2.7V to 5.5V Temperature Switches
in a SOT23
General Description
The MAX6514/MAX6515 low-cost, fully integrated temper-
ature switches assert a logic signal when their die tem-
perature crosses a factory-programmed threshold.
Operating from a 2.7V to 5.5V supply, these devices fea-
ture a fixed voltage reference, an analog temperature
sensor, and a comparator. They are available with facto-
ry-trimmed temperature trip thresholds from -45°C to
+15°C and +35°C to +115°C in 10°C increments, and are
accurate to ±1°C (typ). These devices require no external
components and typically consume 22µA of supply cur-
rent. Hysteresis is pin selectable at 2°C or 10°C.
The MAX6514/MAX6515 are offered with hot-tempera-
ture thresholds (+35°C to +115°C), asserting when the
temperature is above the threshold or with cold-temper-
ature thresholds (-45°C to +15°C), asserting when the
temperature is below the threshold. The MAX6514/
MAX6515 can be used over a -35°C to +125°C range
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 MAX6514 has an active-high, push-pull output. The
MAX6515 has 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 tem-
perature range.
Applications
Over/Undertemperature Protection
Fan Control
Test Equipment
Temperature Control
Temperature Alarms
Notebook, Desktop PCs
RAID
Servers
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
Open-Drain or Push-Pull Outputs
Pin-Selectable 2°C or 10°C Hysteresis
Low Cost
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
MAX6514UK_ _ _ _-T*
MAX6515UK_ _ _ _-T*
-55°C to +125°C 5 SOT23-5
-55°C to +125°C 5 SOT23-5
*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 MAX6514UKP065-T describes a MAX6514 in a
5-pin SOT23 package with a +65°C threshold in tape and reel
(2.5k minimum order). Contact the factory for pricing and avail-
ability.
Typical Operating Circuit
VCC
100k
VCC
TOVER
VCC
INT
Pin Configurations and Functional Diagram appear at end of
data sheet.
0.1µF
MAX6515
GND GND HYST
MICROCONTROLLER
GND
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX6515 Datasheet

(MAX6514 / MAX6515) Temperature Switches

No Preview Available !

MAX6515 pdf
Low-Cost, 2.7V to 5.5V Temperature Switches
in a SOT23
ABSOLUTE MAXIMUM RATINGS
All Voltages Are Referenced to GND
VCC ..........................................................................-0.3V to +6V
TOVER, TUNDER (open drain)................................ -0.3V to +6V
TOVER, TUNDER (push-pull)....................... -0.3V to VCC + 0.3V
HYST .............................................................-0.3V to VCC + 0.3V
Continuous Power Dissipation
5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW
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
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
(VCC = 2.7V to 5.5V, RPULLUP = 100k, (open-drain output only), TA = -55°C to +125°C, unless otherwise noted. Typical values are
at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Supply Voltage Range
VCC
2.7 5.5 V
Supply Current
Hot-temperature thresholds
(+35°C to +115°C)
ICC
Cold-temperature thresholds
(-45°C to +15°C)
22 40
µA
40
Temperature Threshold Accuracy
(Note 2)
TTH
-15°C to +65°C
+75°C to +115°C
-45°C to -25°C (Note 3)
-1.5 +1.5
-2.5
+2.5
°C
-3 +3
Temperature Threshold
Hysteresis
THYST
HYST = VCC
HYST = GND
2
°C
10
HYST Input Threshold (Note 4)
Logic Output Voltage High
(Push-Pull)
Logic Output Voltage Low
(Push-Pull and Open Drain)
VIH
VIL
VOH
VOL
ISOURCE = 500µA, VCC > 2.7V
ISOURCE = 800µA, VCC > 4.5V
ISINK = 1.2mA, VCC > 2.7V
ISINK = 3.2mA, VCC > 4.5V
0.8 x VCC
0.8 x VCC
VCC - 1.5
0.2 x VCC
0.3
0.4
V
V
V
Open-Drain Output Leakage
Current
VCC = 2.7V, open-drain output = 5.5V
10 nA
Note 1: 100% production tested at TA = +25°C. Specifications over temperature are guaranteed by design.
Note 2: The MAX6514/MAX6515 are available with internal factory-programmed temperature trip thresholds from -45°C to +15°C
and +35°C to +115°C in 10°C increments.
Note 3: VCC must be greater than 4.5V for a switching threshold of -45°C.
Note 4: Guaranteed by design.
2 _______________________________________________________________________________________


Part Number MAX6515
Description (MAX6514 / MAX6515) Temperature Switches
Maker Maxim Integrated Products
Total Page 8 Pages
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