19-3007; Rev 0; 11/03
Low-Cost, 2.7V to 5.5V, Analog Temperature
Sensor Switches in a SOT23
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.
o High Accuracy ±±1.5° ꢀ(aꢁx ꢂOvr ꢃ±.5° ꢄt ꢅ+.5°
Tv(pvraꢄurv Rangv
o Ltw Ptwvr °tnsu(pꢄitn—22µA Typical °urrvnꢄ
o FacꢄtryꢃPrtgra((vd Thrvshtlds frt( ꢃ4.5° ꢄt
ꢅ±±.5° in ±05° Incrv(vnꢄs
o Analtg ꢂuꢄpuꢄ ꢄt Alltw BtardꢃLvOvl Tvsꢄing
o ꢂpvnꢃDrain tr PushꢃPull ꢂuꢄpuꢄs
o PinꢃSvlvcꢄablv 25° tr ±05° Hysꢄvrvsis
o Ltw °tsꢄ
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.
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX6516UK_ _ _ _-T
MAX6517UK_ _ _ _-T
MAX6518UK_ _ _ _-T
MAX6519UK_ _ _ _-T
-55°C to +125°C 5 SOT23-5
-55°C to +125°C 5 SOT23-5
-55°C to +125°C 5 SOT23-5
-55°C to +125°C 5 SOT23-5
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.
*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.
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.
Functional Diagram appears at end of data sheet.
Applications
Over/Undertemperature
Protection
Pin Configurations
Fan Control
TOP VIEW
Test Equipment
Temperature Control
Temperature Alarms
Notebook, Desktop PCs
(TOVER)
TOVER
(TUNDER)
TUNDER
OUT
GND
HYST
1
2
3
5
4
5
4
OUT
GND
HYST
1
2
3
5
4
5
4
RAID
(MAX6516)
MAX6517
(MAX6516)
MAX6517
Servers
Typical Operating Circuit
V
CC
V
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
CC
V
CC
SOT23
SOT23
________________________________________________________________ Maxim Integrated Products
±
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.