MAX6516 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – Low-Cost, 2.7V to 5.5V, Analog Temperature Sensor Switches in a SOT23

19-3007; Rev 0; 11/03
Low-Cost, 2.7V to 5.5V, Analog Temperature
Sensor Switches in a SOT23
General Description
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 (typ). These devices require no external compo-
nents and typically consume 22µA of supply current.
Hysteresis is pin selectable at 2°C or 10°C.
The MAX6516–MAX6519 are offered with hot-tempera-
ture thresholds (+35°C to +115°C), asserting when the
temperature is above the threshold, or with cold-tem-
perature thresholds (-45°C to +15°C), asserting when
the temperature is below the threshold.
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 required.
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.
Applications
Fan Control
Test Equipment
Temperature Control
Temperature Alarms
Over/Undertemperature
Protection
Notebook, Desktop PCs
RAID
Servers
Typical Operating Circuit
V_CC
0.1µF
100kΩ
V_CC
TOVER
MAX6517
OUT
GND
HYST
V_CC
INT
MICROCONTROLLER
ADC IN
GND
Features
o High Accuracy ±1.5°C (max) Over -15°C to +65°C
Temperature Range
o Low Power Consumption—22µA Typical Current
o Factory-Programmed Thresholds from -45°C to
+115°C in 10°C Increments
o Analog Output to Allow Board-Level Testing
o Open-Drain or Push-Pull Outputs
o Pin-Selectable 2°C or 10°C Hysteresis
o Low Cost
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX6516UK_ _ _ _-T -55°C to +125°C 5 SOT23-5
MAX6517UK_ _ _ _-T -55°C to +125°C 5 SOT23-5
MAX6518UK_ _ _ _-T -55°C to +125°C 5 SOT23-5
MAX6519UK_ _ _ _-T -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 MAX6516UKP065-T describes a MAX6516 in a
5-pin SOT23 package with a +65°C threshold. Contact the facto-
ry for pricing and availability.
Functional Diagram appears at end of data sheet.
Pin Configurations
TOP VIEW
OUT 1
(TOVER)
5 _TOVER
(MAX6516)
GND 2 _MAX6517
OUT 1
(TUNDER)
5 _TUNDER
(MAX6516)
GND 2 _MAX6517
HYST 3
4 V_CC
SOT23
HYST 3
4 V_CC
SOT23
HYST 1
(TOVER)
5 _TOVER
(MAX6518)
GND 2 _MAX6519
HYST 1
(TUNDER)
5 _TUNDER
(MAX6518)
GND 2 _MAX6519
OUT 3
4 V_CC
SOT23
OUT 3
4 V_CC
SOT23
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