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LM75BIM-3/NOPB Datasheet(PDF) 5 Page - Texas Instruments

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Part # LM75BIM-3/NOPB
Description  Digital Temperature Sensor and Thermal Watchdog With Two-Wire Interface
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM75BIM-3/NOPB Datasheet(HTML) 5 Page - Texas Instruments

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LM75B, LM75C
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SNIS153D – JULY 2009 – REVISED OCTOBER 2015
6.5 Temperature-to-Digital Converter Characteristics
Unless otherwise noted, these specifications apply for: +VS = 5 Vdc for LM75BIM-5, LM75BIMM-5, LM75CIM-5, and
LM75CIMM-5; and +VS = 3.3 Vdc for LM75BIM-3, LM75BIMM-3, LM75CIM-3, and LM75CIMM-3
(1). T
A = TJ = 25°C, unless
otherwise noted.
(2)
PARAMETER
TEST CONDITIONS
MIN(3)
TYP(4)
MAX(3)
UNIT
TA = −25°C to 100°C
–2
2
Accuracy
°C
TA = −55°C to 125°C
–3
3
Resolution
9
Bits
Temperature Conversion Time
See(5)
100
ms
See(5), –55°C
≤ TA ≤ 125°C
300
I2C Inactive
0.25
mA
I2C Inactive, –55°C
≤ TA ≤ 125°C
0.5
LM75B
Shutdown Mode, +VS = 3 V
4
μA
Shutdown Mode, +VS = 5 V
6
Quiescent Current
I2C Inactive
0.25
mA
I2C Inactive, –55°C
≤ TA ≤ 125°C
1
LM75C
Shutdown Mode, +VS = 3 V
4
μA
Shutdown Mode, +VS = 5 V
6
O.S. Output Saturation Voltage
IOUT = 4.0 mA, –55°C ≤ TA
0.8
V
125°C
O.S. Delay
See (6), –55°C
≤ TA ≤ 125°C
1
6
Conversions
TOS Default Temperature
80
See (7)
°C
THYST Default Temperature
75
(1)
All part numbers of the LM75 will operate properly over the +VS supply voltage range of 3 V to 5.5 V. The devices are tested and
specified for rated accuracy at their nominal supply voltage. Accuracy will typically degrade 1°C/V of variation in +VS as it varies from
the nominal value.
(2)
For best accuracy, minimize output loading. Higher sink currents can affect sensor accuracy with internal heating. This can cause an
error of 0.64°C at full rated sink current and saturation voltage based on junction-to-ambient thermal resistance.
(3)
Limits are specified to AOQL (Average Outgoing Quality Level).
(4)
Typicals are at TA = 25°C and represent most likely parametric norm.
(5)
The conversion-time specification is provided to indicate how often the temperature data is updated. The LM75 can be accessed at any
time and reading the Temperature Register will yield result from the last temperature conversion. When the LM75 is accessed, the
conversion that is in process will be interrupted and it will be restarted after the end of the communication. Accessing the LM75
continuously without waiting at least one conversion time between communications will prevent the device from updating the
Temperature Register with a new temperature conversion result. Consequently, the LM75 should not be accessed continuously with a
wait time of less than 300 ms.
(6)
O.S. Delay is user programmable up to 6 “over limit” conversions before O.S. is set to minimize false tripping in noisy environments.
(7)
Default values set at power up.
6.6 Digital DC Characteristics
Unless otherwise noted, these specifications apply for +VS = 5 Vdc for LM75BIM-5, LM75BIMM-5, LM75CIM-5, and
LM75CIMM-5; and +VS = 3.3 Vdc for LM75BIM-3, LM75BIMM-3, LM75CIM-3, and LM75CIMM-3
(1). T
A = TJ = 25°C, unless
otherwise noted.
PARAMETER
TEST CONDITIONS
MIN(2)
TYP(3)
MAX(2)
UNIT
VIN(1)
Logical “1” Input Voltage
–55°C
≤ TA ≤ 125°C
+VS × 0.7
+VS + 0.3
V
VIN(0)
Logical “0” Input Voltage
–55°C
≤ TA ≤ 125°C
−0.3
+VS × 0.3
V
IIN(1)
Logical “1” Input Current
VIN = +VS
0.005
μA
VIN = +VS, –55°C ≤ TA
1
125°C
IIN(0)
Logical “0” Input Current
VIN = 0 V
−0.005
μA
VIN = 0 V, –55°C ≤ TA
−1
125°C
(1)
All part numbers of the LM75 will operate properly over the +VS supply voltage range of 3 V to 5.5 V. The devices are tested and
specified for rated accuracy at their nominal supply voltage. Accuracy will typically degrade 1°C/V of variation in +VS as it varies from
the nominal value.
(2)
Limits are specified to AOQL (Average Outgoing Quality Level).
(3)
Typicals are at TA = 25°C and represent most likely parametric norm.
Copyright © 2009–2015, Texas Instruments Incorporated
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