LM96080

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1 local temp sensor with fan speed and power supply voltage monitor

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Product details

Parameters

Local sensor accuracy (Max) (+/- C) 2 Type Fan Controller Operating temperature range (C) -40 to 125 Supply voltage (Min) (V) 3 Interface type I2C, SMBus Supply voltage (Max) (V) 5.5 Supply current (Max) (uA) 580 Temp resolution (Max) (bits) 12 Features Tachometer, ALERT Remote channels (#) 0 Addresses 8 Rating Catalog open-in-new Find other Digital temperature sensors

Package | Pins | Size

TSSOP (PW) 24 34 mm² 7.7 x 4.4 open-in-new Find other Digital temperature sensors

Features

  • Local Temperature Sensing
  • 7 Positive Voltage Inputs with 10-bit Resolution
  • 2 Programmable Fan Speed Monitoring Inputs
  • 2.5 mV LSb and 2.56V Input Range
  • Chassis Intrusion Detector Input
  • WATCHDOG Comparison of All Monitored Values
  • Separate Input to Show Status in Interrupt Status Register of Additional External Temperature Sensors Such as the LM26/27, LM56/57, LM73, or LM75
  • I2C Serial Bus Interface Compatibility, Supports Standard Mode, 100 kbits/s, and Fast Mode, 400 kbits/s
  • Shutdown Mode to Minimize Power Consumption
  • Programmable RST_OUT/OS Pin: RST_OUT Provides a Reset Output; OS Provides an Interrupt Output Activated by an Overtemperature Shutdown Event
  • Software and Pin Compatible with the LM80

Key Specifications

  • Total Unadjusted Error ±1 %FS (Max)
  • Differential Non-Linearity ±1 Lsb (Max)
  • Supply Voltage Range +3.0 V to +5.5 V
  • Supply Current (Operating) 0.370 mA Typ
  • Supply Current (Shutdown) 0.330 mA Typ
  • ADC Resolution 10 Bits
  • Temperature Resolution 0.5°C/0.0625°C
  • Temperature Accuracy ±3°C (Max)

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Description

LM96080, compatible to LM80, is a hardware monitor that contains a 10-bit delta-sigma ADC capable of measuring 7 positive voltages and local temperature. The LM96080 also measures the speed of two fans and includes other hardware monitoring on an I2C® interface. The LM96080 includes a sequencer that performs WATCHDOG window comparisons of all measured values and its interrupt outputs become active when any values exceed the programmed limits.

The LM96080 is especially suited to interface to both linear and digital temperature sensors. The 2.5 mV LSb (least significant bit) and 2.56 volt input range is ideal for accepting inputs from a linear sensor such as the LM94022. The BTI is used as an input from either digital or thermostat sensors such as LM73, LM75, LM56, LM57, LM26, LM27, LM26LV, or other LM96080.

The LM96080 supports Standard Mode (Sm, 100 kbits/s) and Fast Mode (Fm, 400 kbits/s) I2C interface modes of operation. LM96080 includes an analog filter on the I2C digital control lines that allows improved noise immunity and supports TIMEOUT reset function on SDA and SCL that prevents I2C bus lockup. Three I2C device address pins allow up to 8 parts on a single bus.

The LM96080's 3.0V to 5.5V supply voltage range, low supply current, and I2C interface make it ideal for a wide range of applications. Operation is ensured over the temperature range of (−40)°C ≤ TA ≤ +125°C. The LM96080 is available in a 24-pin TSSOP package.

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Technical documentation

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Type Title Date
* Data sheet LM96080 System Hardware Monitor with 2-Wire Serial Interface datasheet (Rev. D) Mar. 22, 2013
Technical article How to choose the right thermistor for your temperature sensing application Feb. 13, 2020
Technical article How to enable thermal safety for automotive infotainment and cluster systems Oct. 15, 2019
Technical article Driving industrial innovation with small-size sensors Sep. 12, 2019
Technical article How to select a temperature sensor probe Feb. 18, 2016
Application note Applying I2C-Compatible Temperature Sensors in Systems With Slow Clock Edges (Rev. A) May 06, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Software development

DRIVER OR LIBRARY Download
Eval Board Software for Hardware Monitors and Digital Temp Sensors
DIGITALTEMPSENSORSEVM-SW — Evaluation Board Software for Hardware Monitors and Digital Temperature Sensors
DRIVER OR LIBRARY Download
Linux Driver for LM80
LM80SW-LINUX The Linux driver supports the LM80 series of System Hardware Monitors. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.
Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:
  • lm80
  • (...)
DRIVER OR LIBRARY Download
Eval Board Software For Hardware Monitors And Digital Temperature Sensors
SENSOREVAL SensorEval
SensorEval software supports the latest TI temperature sensor and hardware monitor evaluation boards via USB interface. It also allows access to sensors mounted directly on motherboards that support Intel chip sets.

  • Download SensorEval Software and Manual
  • Windows XP support is offered for (...)

Design tools & simulation

SIMULATION MODEL Download
SNAM024.ZIP (457 KB) - IBIS Model

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 24 View options

Ordering & quality

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