19-3007; Rev 1; 2/11
Low-Cost, 2.7V to 5.5V, Analog Temperature
Sensor Switches in a SOT23
–MAX6519
General Description
Features
The MAX6516–MAX6519 low-cost, fully integrated tem-
perature switches assert a logic signal when their die
temperature crosses a factory-programmed threshold.
Operating from a 2.7V to 5.5V supply, these devices
feature a fixed voltage reference, an analog tempera-
ture sensor, and a comparator. They are available with
factory-trimmed temperature trip thresholds from -45°C
to +115°C in 10°C increments, and are accurate to
0.5°C ꢀtypꢁ. These devices reꢂuire no external compo-
nents and typically consume 22µA of supply current.
Hysteresis is pin selectable at 2°C or 10°C.
♦ 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
♦ Analog Output to Allow Board-Level Testing
♦ Open-Drain or Push-Pull Outputs
♦ Pin-Selectable 2°C or 10°C Hysteresis
Ordering Information
The MAX6516–MAX6519 are offered with hot-tempera-
ture thresholds ꢀ+35°C to +115°Cꢁ, asserting when the
temperature is above the threshold, or with cold-tem-
perature thresholds ꢀ-45°C to +15°Cꢁ, asserting when
the temperature is below the threshold.
PART
TEMP RANGE
PIN-PACKAGE
MAX6516UK_ _ _ _+T -55°C to +125°C 5 SOT23
MAX6517UK_ _ _ _+T -55°C to +125°C 5 SOT23
MAX6518UK_ _ _ _+T -55°C to +125°C 5 SOT23
MAX6519UK_ _ _ _+T -55°C to +125°C 5 SOT23
These devices provide an analog output proportional to
temperature and are stable with any capacitive load up
to 1000pF. The MAX6516–MAX6519 can be used over a
range of -35°C to +125°C 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 reꢂuired.
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 MAX6516UKP065+T describes a
MAX6516 in a 5-pin SOT23 package with a +65°C threshold.
Contact the factory for pricing and availability.
The MAX6516 and MAX6518 have an active-high,
push-pull output. The MAX6517 and MAX6519 have an
active-low, open-drain output. These devices are avail-
able in a space-saving 5-pin SOT23 package and oper-
ate over the -55°C to +125°C temperature range.
+Denotes a leadꢀPbꢁ-free/RoHS-compliant package.
T = Tape and reel.
Functional Diagram appears at end of data sheet.
Applications
Fan Control
Over/Undertemperature
Protection
Pin Configurations
Test Eꢂuipment
Temperature Control
Temperature Alarms
TOP VIEW
Notebook, Desktop PCs
RAID
(TOVER)
TOVER
(TUNDER)
TUNDER
OUT
GND
HYST
1
2
3
5
4
5
4
OUT
GND
HYST
1
2
3
5
4
5
4
Servers
(MAX6516)
MAX6517
(MAX6516)
MAX6517
Typical Operating Circuit
V
V
CC
CC
V
CC
SOT23
SOT23
100kΩ
V
CC
(TOVER)
TOVER
(TUNDER)
TUNDER
V
TOVER
INT
CC
HYST
GND
OUT
1
2
3
HYST
GND
OUT
1
2
3
0.1μF
MICROCONTROLLER
(MAX6518)
MAX6519
(MAX6518)
MAX6519
MAX6517
OUT
ADC IN
GND
GND
HYST
V
V
CC
CC
SOT23
SOT23
________________________________________________________________ Maxim Integrated Products
1
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.