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LM75BIMM-5 数据手册 - Maxim Integrated（美信）
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LM75BIMM-5数据手册
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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
I
2
C 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 (T
OS
) and the hysteresis
temperature below which the alarm condition is not
valid (T
HYST
). Also, the LM75’s T
OS
and T
HYST
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 T
OS
= +80°C and T
HYST
= +75°C. The 3.0V
to 5.5V supply voltage range, low supply current, and
I
2
C 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
Features
♦ SO (SOP) and µMAX
®
(µSOP) Packages
♦ I
2
C Bus Interface
♦ Separate Open-Drain OS Output Operates as
Interrupt or Comparator/Thermostat Input
♦ Register Readback Capability
♦ Power-Up Defaults Permit Stand-Alone Operation
as a Thermostat
♦ 3.0V to 5.5V Supply Voltage
♦ Low Operating Supply Current 250µA (typ), 1mA
(max)
♦ 4µA (typ) Shutdown Mode Minimizes Power
Consumption
♦ Up to Eight LM75s Can Be Connected to a Single
Bus
♦ Pin- and/or Register-Compatible with Improved-
Performance Maxim Sensors Including MAX7500,
MAX6625, MAX6626, DS75LV, and DS7505
LM75
Digital Temperature Sensor and Thermal
Watchdog with 2-Wire Interface
________________________________________________________________
Maxim Integrated Products
1
Functional Diagram
Ordering Information/Selector Guide
19-4385; Rev 0; 3/09
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.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Note: Devices are specified over the -55°C to +125°C temperature range and include I
2
C noise filter.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
PART PIN-PACKAGE PKG SUPPLY VOLTAGE (V) TOP MARK
LM75BIM-3+ 8 SO (SOP) Bulk 3.3 LM75BIM-3
LM75BIMX-3+ 8 SO (SOP) T&R 3.3 LM75BIM-3
LM75BIMM-3+ 8 µMAX (µSOP) Bulk 3.3 T01B
LM75BIMMX-3+ 8 µMAX (µSOP) T&R 3.3 T01B
LM75BIM-5+ 8 SO (SOP) Bulk 5.0 LM75BIM-5
LM75BIMX-5+ 8 SO (SOP) T&R 5.0 LM75BIM-5
LM75BIMM-5+ 8 µMAX (µSOP) Bulk 5.0 T00B
LM75BIMMX-5+ 8 µMAX (µSOP) T&R 5.0 T00B
OS
SDA
SCL
A0
A1
A2
+V
S
= 3.0V to 5.5V
SILICON
BANDGAP
TEMPERATURE
SENSOR
9-BIT DELTA-
SIGMA ADC
CONFIGURATION
REGISTER
TOS SET POINT
REGISTER
T
HYST
SET
POINT REGISTER
SET POINT
COMPARATOR W/
HYSTERESIS
2-WIRE INTERFACE
POINTER
REGISTER
8816 16 16
16
16
8
3
1
2
4
7
6
5
1
+
2
3
4
8
7
6
5
+V
S
A0
A1
A2GND
OS
SCL
SDA
LM75
μMAX (μSOP), SO
TOP VIEW
Pin Configuration
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