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
MAX6514/MAX6515
Low-Cost, 2.7V to 5.5V Temperature Switches
in a SOT23
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-3147; 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.
Pin Configurations and Functional Diagram appear at end of
data sheet.
Note: These parts are offered in 16 standard temperature ver-
sions with a minimum order of 2500 pieces. To complete the
suffix information, add P or N for positive or negative trip tem-
perature, and select an available trip point in degrees centi-
grade. 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 availability.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Typical Operating Circuit
