LM81BIMTX-3/NOPB Texas Instruments - Yeehing Electronics

Local temp sensor, fan control, hardware and 6 power supply voltage monitors

Pricing (USD)

Quantity	Unit Price
1 — 99	4.179
100 — 249	3.662
250 — 999	2.568
1,000 +	1.66

The above prices are for reference only.

Specifications

Manufacturer	Texas Instruments
Product Category	Supervisory Circuits
RoHS	Y
Type	Voltage Supervisory
Mounting Style	SMD/SMT
Package / Case	TSSOP-24
Threshold Voltage	2.5 V, 3.3 V, 5 V, 12 V
Output Type	Active High, Active Low, Open Drain
Manual Reset	Manual Reset
Watchdog Timers	Watchdog
Battery Backup Switching	No Backup
Supply Voltage - Max	3.8 V
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 125 C
Quiescent Current	900 uA
Series	LM81
Packaging	Reel
Features	1 manual fan speed control, 2 fan speed monitor, 6 supply monitor inputs, chassis Intrusion dete
Height	0.9 mm
Length	7.8 mm
Operating Temperature Range	- 40 C to + 125 C
Width	4.4 mm
Brand	Texas Instruments
Chip Enable Signals	No Chip Enable
Operating Supply Current	400 uA
Power Fail Detection	No
Product Type	Supervisory Circuits
Factory Pack Quantity	2500
Subcategory	PMIC - Power Management ICs
Supply Voltage - Min	2.8 V
Unit Weight	0.007478 oz

For more information, please refer to datasheet

Documents

LM81BIMTX-3/NOPB Datasheet

More Information

The LM81 is a highly integrated data acquisition system for hardware monitoring of servers, Personal Computers, or virtually any microprocessor-based system. In a PC, the LM81 can be used to monitor power supply voltages, temperatures, and fan speeds. Actual values for these inputs can be read at any time. Programmable WATCHDOG limits in the LM81 activate a fully programmable and maskable interrupt system with two outputs (INT and T_CRIT_). The LM81 has an on-chip digital output temperature sensor with 9-bit or 12-bit resolution, a 6 analog input ADC with 8-bit resolution and an 8-bit DAC. Two fan tachometer outputs can be measured with the LM81’s FAN1 and FAN2 inputs. The DAC, with a 0 to 1.25V output voltage range, can be used for fan speed control. Additional inputs are provided for Chassis Intrusion detection circuits, and VID monitor inputs. The LM81 has a Serial Bus interface that is compatible with SMBus. Serial Bus Timing Diagram