MAX6625/MAX6626
9-Bit/12-Bit Temperature Sensors with
I2C-Compatible Serial Interface in a SOT23
General Description
The MAX6625/MAX6626 combine a temperature sensor, a
programmable overtemperature alarm, and an I C-compatible
Features
● 9-Bit Temperature-to-Digital Converter (MAX6625)
2
● 12-Bit Temperature-to-Digital Converter (MAX6626)
2
serial interface into single compact packages. They convert
their die temperatures into digital values using internal analog-
to-digital converters (ADCs). The result of the conversion is
held in a temperature register, readable at any time through
the serial interface. A dedicated alarm output, OT, activates
if the conversion result exceeds the value programmed in
the high-temperature register. A programmable fault queue
sets the number of faults that must occur before the alarm
activates, preventing spurious alarms in noisy environments.
OT has programmable output polarity and operating modes.
● I C-Compatible Serial Interface
● Up to Four Devices on a Single Bus
● Versatile Alarm Output with Programmable Trip
Temperature and Hysteresis
● Low-Power Shutdown Mode
● Space-Saving TDFN or SOT23 Packages
● Lead-Free Version Available (TDFN Package)
Ordering Information
PART
TEMP RANGE
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
PIN-PACKAGE
6 SOT23
The MAX6625/MAX6626 feature a shutdown mode that
saves power by turning off everything but the power-on
MAX6625PMUT*
MAX6625PMUT+*
MAX6625RMUT*
MAX6625RMUT+*
MAX6625PMTT*
MAX6625RMTT*
MAX6626PMUT*
MAX6626PMUT+*
MAX6626RMUT+*
MAX6626RMUT*
6 SOT23
2
reset and the I C-compatible interface. Four separate
6 SOT23
addresses can be configured with the ADD pin, allowing
up to four MAX6625/MAX6626 devices to be placed on
the same bus. The MAX6625P/MAX6626P OT outputs
are open drain, and the MAX6625R/MAX6626R OT outputs
include internal pullup resistors.
6 SOT23
6 TDFN-EP**
6 TDFN-EP**
6 SOT23
The MAX6625 has a 9-bit internal ADC and can function
as a replacement for the LM75 in most applications. The
MAX6626 has a 12-bit internal ADC. Both devices come
in the space-saving 6-pin SOT23 package, or the 6-pin
TDFN package.
6 SOT23
6 SOT23
6 SOT23
*For device options, see Selector Guide at end of data sheet.
Requires special solder temperature profile described in the
Absolute Maximum Ratings section.
**EP = Exposed pad.
# Indicates an RoHS-compliant part
Applications
● Fan Control
● Temperature Alarms
● System Temperature Control
● Industrial Equipment
+Denotes a lead(Pb)-free/RoHS-compliant package.
Ordering Information is continued at end of data sheet.
Pin Configuration
Typical Operating Circuit
V
S
TOP VIEW
1kΩ
1kΩ
+
6
0.1µF
SDA
GND
SCL
1
2
3
6
5
4
V
S
10kΩ
(OMIT FOR MAX6625R
AND MAX6626R)
4
MAX6625
MAX6626
ADD
OT
OT OUTPUT
MAX6625
MAX6626
1
3
SDA
2
TO I C
MASTER
SCL
SOT236
TDFN-EP**
5
2
**EP = EXPOSED PAD
19-1841; Rev 8; 5/19