LM75BIMMX-3-T データシートの表示（PDF） - Maxim Integrated
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LM75BIMMX-3-T
Maxim Integrated
LM75BIMMX-3-T Datasheet PDF : 12 Pages
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19-4385; Rev 0; 3/09
Digital Temperature Sensor and Thermal
Watchdog with 2-Wire Interface
General Description
The LM75 temperature sensor includes a delta-sigma
analog-to-digital converter, and a digital overtempera-
ture detector. The host can query the LM75 through its
I2C interface to read temperature at any time. The
open-drain overtemperature output (OS) sinks current
when the programmable temperature limit is exceeded.
The OS output operates in either of two modes, com-
parator or interrupt. The host controls the temperature
at which the alarm is asserted (TOS) and the hysteresis
temperature below which the alarm condition is not
valid (THYST). Also, the LM75’s TOS and THYST regis-
ters can be read by the host. The address of the LM75
is set with three pins to allow multiple devices to work
on the same bus. Power-up is in comparator mode, with
defaults of TOS = +80°C and THYST = +75°C. The 3.0V
to 5.5V supply voltage range, low supply current, and
I2C interface make the LM75 ideal for many applica-
tions in thermal management and protection.
Applications
Thermal System Management
Thermal Protection
Test Equipment
Computers and Office Electronics
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Pin Configuration
Features
o SO (SOP) and µMAX® (µSOP) Packages
o I2C Bus Interface
o Separate Open-Drain OS Output Operates as
Interrupt or Comparator/Thermostat Input
o Register Readback Capability
o Power-Up Defaults Permit Stand-Alone Operation
as a Thermostat
o 3.0V to 5.5V Supply Voltage
o Low Operating Supply Current 250µA (typ), 1mA
(max)
o 4µA (typ) Shutdown Mode Minimizes Power
Consumption
o Up to Eight LM75s Can Be Connected to a Single
Bus
o Pin- and/or Register-Compatible with Improved-
Performance Maxim Sensors Including MAX7500,
MAX6625, MAX6626, DS75LV, and DS7505
Functional Diagram
SILICON
BANDGAP
TEMPERATURE
SENSOR
9-BIT DELTA-
SIGMA ADC
+VS = 3.0V to 5.5V
8
16
16
SET POINT
COMPARATOR W/
HYSTERESIS
3 OS
TOS SET POINT
REGISTER
TOP VIEW
+
SDA 1
SCL 2
OS 3
GND 4
LM75
8 +VS
7 A0
6 A1
5 A2
μMAX (μSOP), SO
CONFIGURATION
REGISTER
POINTER
REGISTER
THYST SET
POINT REGISTER
8
16
8
16
16
A0 7
A1 6
A2 5
2-WIRE INTERFACE
4
1
SDA
SCL
2
Ordering Information/Selector Guide
PART
PIN-PACKAGE
PKG
SUPPLY VOLTAGE (V)
LM75BIM-3+
8 SO (SOP)
Bulk
3.3
LM75BIMX-3+
8 SO (SOP)
T&R
3.3
LM75BIMM-3+
8 µMAX (µSOP)
Bulk
3.3
LM75BIMMX-3+
8 µMAX (µSOP)
T&R
3.3
LM75BIM-5+
8 SO (SOP)
Bulk
5.0
LM75BIMX-5+
8 SO (SOP)
T&R
5.0
LM75BIMM-5+
8 µMAX (µSOP)
Bulk
5.0
LM75BIMMX-5+
8 µMAX (µSOP)
T&R
5.0
Note: Devices are specified over the -55°C to +125°C temperature range and include I2C noise filter.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
TOP MARK
LM75BIM-3
LM75BIM-3
T01B
T01B
LM75BIM-5
LM75BIM-5
T00B
T00B
________________________________________________________________ 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.
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