LM75AIM National Semiconductor, LM75AIM Datasheet
LM75AIM
Manufacturer Part Number
LM75AIM
Description
SOIC
Manufacturer
National Semiconductor
Datasheet
1.LM75BIM-3.pdf
(18 pages)
Specifications of LM75AIM
Date_code
05+
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© 2005 National Semiconductor Corporation
LM75
Digital Temperature Sensor and Thermal Watchdog with
Two-Wire Interface
General Description
The LM75 is a temperature sensor, Delta-Sigma analog-to-
digital converter, and digital over-temperature detector with
I
read temperature. The open-drain Overtemperature Shut-
down (O.S.) output becomes active when the temperature
exceeds a programmable limit. This pin can operate in either
“Comparator” or “Interrupt” mode.
The host can program both the temperature alarm threshold
(T
away (T
tents of the LM75’s T
A1, A2) are available for address selection. The sensor
powers up in Comparator mode with default thresholds of
80˚C T
The LM75’s 3.0V to 5.5V supply voltage range, low supply
current and I
applications. These include thermal management and pro-
tection applications in personal computers, electronic test
equipment, and office electronics.
Features
n SOP-8 and Mini SOP-8 (MSOP) packages save space
n I
n Separate open-drain output pin operates as interrupt or
Simplified Block Diagram
2
I 2 C
C
OS
comparator/thermostat output
®
2
®
C Bus interface
is a registered trademark of Philips Corporation.
) and the temperature at which the alarm condition goes
interface. The host can query the LM75 at any time to
OS
HYST
and 75˚C T
). In addition, the host can read back the con-
2
C interface make it ideal for a wide range of
OS
HYST
and T
.
HYST
registers. Three pins (A0,
DS012658
n Register readback capability
n Power up defaults permit stand-alone operation as
n Shutdown mode to minimize power consumption
n Up to 8 LM75s can be connected to a single bus
n UL Recognized Component
Key Specifications
Applications
n System Thermal Management
n Personal Computers
n Office Electronics
n Electronic Test Equipment
j
j
j
thermostat
Supply Voltage
Supply Current
Temperature Accuracy
operating
shutdown
−25˚C to 100˚C
−55˚C to 125˚C
01265801
October 2005
www.national.com
3.0V to 5.5V
250 µA (typ)
1 mA (max)
±
±
4 µA (typ)
2˚C(max)
3˚C(max)