Product Summary

The LM84BIMQA is a remote diode temperature sensor. The LM84BIMQA senses its own temperature as well as the temperature of a target IC with a diode junction, such as a Pentium processor or a diode connected 2N3904. A diode junction (semiconductor junction) is required on the target ICs die. A host can query the LM84BIMQA at any time to read the temperature of this diode as well as the temperature state of the LM84 itself. A T_CRIT_A interrupt output becomes active when the temperature is greater than a programmable comparator limit, T_CRIT. The applications of the LM84BIMQA are (1)System Thermal Management; (2)Personal Computers; (3)Electronic Test Equipment; (4)Office Electronics; (5)HVAC.

Parametrics

LM84BIMQA absolute maximum ratings: (1)Supply Voltage: -0.3V to 6.0V; (2)Voltage at Any Pin: -0.3V to (VCC + 0.3V); (3)D- Input Current: ±1mA; (4)Input Current at All Other Pins: 5 mA; (5)Package Input Current: 20 mA; (6)SMBData, T_CRIT_A Output Sink Current: 10 mA; (7)Output Voltage: 6.0V; (8)Storage Temperature: -65 to +150℃.

Features

LM84BIMQA features: (1)Directly senses die temperature of remote ICs; (2)Senses temperature of remote diodes; (3)SMBus compatible interface, supports SMBus Timeout; (4)Register readback capability; (5)7 bit plus sign temperature data format; (6)2 address select lines enable 9 LM84s to be connected to a single bus.

Diagrams

LM84BIMQA block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LM84BIMQA
LM84BIMQA

National Semiconductor (TI)

Board Mount Temperature Sensors

Data Sheet

0-285: $1.53
285-570: $1.37
570-1045: $1.10
1045-5035: $1.06
LM84BIMQA/NOPB
LM84BIMQA/NOPB

National Semiconductor (TI)

Board Mount Temperature Sensors

Data Sheet

0-1: $2.32
1-25: $1.87
25-100: $1.70
100-250: $1.53
LM84BIMQAX/NOPB
LM84BIMQAX/NOPB

National Semiconductor (TI)

Board Mount Temperature Sensors

Data Sheet

0-1880: $1.10
1880-2500: $1.10
2500-5000: $1.06
LM84BIMQAX
LM84BIMQAX

National Semiconductor (TI)

Board Mount Temperature Sensors

Data Sheet

0-2500: $1.10
2500-5000: $1.06