Product details

Local sensor accuracy (max) 3 Type Fan Controller Operating temperature range (°C) 0 to 85 Supply voltage (min) (V) 3 Interface type SMBus Supply voltage (max) (V) 3.6 Features PWM output, Tachometer Supply current (max) (µA) 900 Temp resolution (max) (Bits) 8 Remote channels (#) 2 Addresses 3 Rating Catalog
Local sensor accuracy (max) 3 Type Fan Controller Operating temperature range (°C) 0 to 85 Supply voltage (min) (V) 3 Interface type SMBus Supply voltage (max) (V) 3.6 Features PWM output, Tachometer Supply current (max) (µA) 900 Temp resolution (max) (Bits) 8 Remote channels (#) 2 Addresses 3 Rating Catalog
TSSOP (DGG) 56 113.4 mm² 14 x 8.1
  • 8-bit ΣΔ ADC
  • Monitors 16 Power Supplies
  • Monitors 2 Remote Thermal Diodes
  • Internal Ambient Temperature Sensing
  • Programmable Autonomous Fan Control Based on Temperature Readings with Fan Boost Support
  • Fan Control Based on 13-step Lookup Table
  • Temperature Reading Digital Filter
  • 1.0°C Digital Temperature Sensor Resolution
  • 0.5°C Temperature Resolution for Fan Control
  • 2 PWM Fan Speed Control Outputs
  • 4 Fan Tachometer Inputs
  • Dual Processor Thermal Throttling (PROCHOT) Monitoring
  • Dual Dynamic VID Monitoring (6 VIDs per Processor)
  • 8 General Purpose I/Os:
    • 4 Can be Configured as Fan Tachometer Inputs
    • 2 Can be Configured to Connect to THERMTRIP from a Processor
    • 2 are Standard GPIOs that Could be Used to Monitor IERR Signal
  • 2 General Purpose Inputs that Can be Used to Monitor SCSI Termination Signals
  • Limit Register Comparisons of All Monitored Values
  • 2-wire, SMBus 2.0 Compliant, Serial Digital Interface
    • Supports Byte/block Read and Write
    • Configurable Slave Address (Tri-level Pin Selects 1 of 3 Possible Addresses)
  • 2.5V Reference Voltage Output
  • 56-pin TSSOP Package
  • XOR-tree Test Mode
  • Key Specifications
    • Voltage Measurement Accuracy ±2% FS (max)
    • Resolution 8-bits, 1°C
    • Temperature Sensor Accuracy ±3°C (max)
    • Temperature Range:LM93 Operational 0°C to +85°CRemote Temp Accuracy 0°C to +125°C
    • Power Supply Voltage +3.0V to +3.6V
    • Power Supply Current 0.9 mA

All trademarks are the property of their respective owners.

  • 8-bit ΣΔ ADC
  • Monitors 16 Power Supplies
  • Monitors 2 Remote Thermal Diodes
  • Internal Ambient Temperature Sensing
  • Programmable Autonomous Fan Control Based on Temperature Readings with Fan Boost Support
  • Fan Control Based on 13-step Lookup Table
  • Temperature Reading Digital Filter
  • 1.0°C Digital Temperature Sensor Resolution
  • 0.5°C Temperature Resolution for Fan Control
  • 2 PWM Fan Speed Control Outputs
  • 4 Fan Tachometer Inputs
  • Dual Processor Thermal Throttling (PROCHOT) Monitoring
  • Dual Dynamic VID Monitoring (6 VIDs per Processor)
  • 8 General Purpose I/Os:
    • 4 Can be Configured as Fan Tachometer Inputs
    • 2 Can be Configured to Connect to THERMTRIP from a Processor
    • 2 are Standard GPIOs that Could be Used to Monitor IERR Signal
  • 2 General Purpose Inputs that Can be Used to Monitor SCSI Termination Signals
  • Limit Register Comparisons of All Monitored Values
  • 2-wire, SMBus 2.0 Compliant, Serial Digital Interface
    • Supports Byte/block Read and Write
    • Configurable Slave Address (Tri-level Pin Selects 1 of 3 Possible Addresses)
  • 2.5V Reference Voltage Output
  • 56-pin TSSOP Package
  • XOR-tree Test Mode
  • Key Specifications
    • Voltage Measurement Accuracy ±2% FS (max)
    • Resolution 8-bits, 1°C
    • Temperature Sensor Accuracy ±3°C (max)
    • Temperature Range:LM93 Operational 0°C to +85°CRemote Temp Accuracy 0°C to +125°C
    • Power Supply Voltage +3.0V to +3.6V
    • Power Supply Current 0.9 mA

All trademarks are the property of their respective owners.

The LM93, hardware monitor, has a two wire digital interface compatible with SMBus 2.0. Using an 8-bit ΣΔ ADC, the LM93 measures the temperature of two remote diode connected transistors as well as its own die and 16 power supply voltages.

To set fan speed, the LM93 has two PWM outputs that are each controlled by up to four temperature zones. The fan-control algorithm is lookup table based. The LM93 includes a digital filter that can be invoked to smooth temperature readings for better control of fan speed. The LM93 has four tachometer inputs to measure fan speed. Limit and status registers for all measured values are included.

The LM93 builds upon the functionality of previous motherboard management ASICs and uses some of the LM85's features (i.e. smart tachometer mode). It also adds measurement and control support for dynamic Vccp monitoring and PROCHOT. It is designed to monitor a dual processor Xeon class motherboard with a minimum of external components.

The LM93, hardware monitor, has a two wire digital interface compatible with SMBus 2.0. Using an 8-bit ΣΔ ADC, the LM93 measures the temperature of two remote diode connected transistors as well as its own die and 16 power supply voltages.

To set fan speed, the LM93 has two PWM outputs that are each controlled by up to four temperature zones. The fan-control algorithm is lookup table based. The LM93 includes a digital filter that can be invoked to smooth temperature readings for better control of fan speed. The LM93 has four tachometer inputs to measure fan speed. Limit and status registers for all measured values are included.

The LM93 builds upon the functionality of previous motherboard management ASICs and uses some of the LM85's features (i.e. smart tachometer mode). It also adds measurement and control support for dynamic Vccp monitoring and PROCHOT. It is designed to monitor a dual processor Xeon class motherboard with a minimum of external components.

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Technical documentation

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Type Title Date
* Data sheet LM93 Hardware Monitor with Integrated Fan Control for Server Management datasheet (Rev. E) 27 Mar 2013

Design & development

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

Driver or library

LM93SW-LINUX — Linux Driver for LM93

The Linux driver supports the LM93 series of 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:
  • lm93
  • lm94
Linux (...)
Support software

DIGITALTEMPSENSORSEVM-SW Eval Board Software for Hardware Monitors and Digital Temp Sensors

Evaluation Board Software for Hardware Monitors and Digital Temperature Sensors
Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
LM63 1 remote and local temperature sensor with fan control LM64 1 remote and local temp sensor with fan control and 5 GPIO's LM71 ±1.5°C Temperature Sensor with SPI Interface LM71-Q1 Automotive Grade, ±1.5°C Temperature Sensor with SPI Interface LM73 ±1°C Temperature Sensor with I2C/SMBus Interface LM86 ±0.75°C remote and local temperature sensor with SMBus interface LM89 ±0.75°C remote and local temperature sensor with SMBus interface and 2 addresses for bus sharing LM90 Remote and Local Temperature Sensor with SMBus Interface LM93 2 remote, 1 local temp sensor with hardware monitor and 16 power supply voltage monitors LM95010 ±2°C Temperature Sensor with SensorPath Interface LM95071 ±1°C Temperature Sensor with SPI Interface LM95221 ±3°C dual remote & local temperature sensor with beta compensation and SMBus, I2C LM95231 Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface LM95235 ±0.75°C remote & local temperature sensor with SMBus, beta compensation for 65/90n LM95235-Q1 Automotive Grade, ±2°C Remote and Local Temperature Sensor with TruTherm Technology and SMBus LM96000 Hardware monitor with fan control and 6 power supply voltage monitors LM96080 1 local temp sensor with fan speed and power supply voltage monitor LM96163 1 remote and local temp sensor with beta compensation and fan control LM99 Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface
Support software

SENSOREVAL Eval Board Software For Hardware Monitors And Digital Temperature Sensors

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 (...)
Supported products & hardware

Supported products & hardware

Products
Digital temperature sensors
LM63 1 remote and local temperature sensor with fan control LM64 1 remote and local temp sensor with fan control and 5 GPIO's LM71 ±1.5°C Temperature Sensor with SPI Interface LM71-Q1 Automotive Grade, ±1.5°C Temperature Sensor with SPI Interface LM73 ±1°C Temperature Sensor with I2C/SMBus Interface LM75A 2C industry standard temperature sensor, I2C/SMBus interface LM86 ±0.75°C remote and local temperature sensor with SMBus interface LM89 ±0.75°C remote and local temperature sensor with SMBus interface and 2 addresses for bus sharing LM90 Remote and Local Temperature Sensor with SMBus Interface LM93 2 remote, 1 local temp sensor with hardware monitor and 16 power supply voltage monitors LM95010 ±2°C Temperature Sensor with SensorPath Interface LM95071 ±1°C Temperature Sensor with SPI Interface LM95172-Q1 Automotive Grade, ±1°C Temperature Sensor with 200°C Capability and SPI Interface LM95214 ±2°C Quad Remote and Local Temperature Sensor with SMBus Interface LM95221 ±3°C dual remote & local temperature sensor with beta compensation and SMBus, I2C LM95231 Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface LM95233 ±2°C Dual Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface LM95234 ±2°C Quad Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface LM95235 ±0.75°C remote & local temperature sensor with SMBus, beta compensation for 65/90n LM95235-Q1 Automotive Grade, ±2°C Remote and Local Temperature Sensor with TruTherm Technology and SMBus LM95241 ±1.25°C dual remote & local temperature sensor with beta compensation and SMBus, I LM95245 ±0.75°C remote & local temperature sensor with SMBus, beta compensation for 45nm d LM96000 Hardware monitor with fan control and 6 power supply voltage monitors LM96080 1 local temp sensor with fan speed and power supply voltage monitor LM96163 1 remote and local temp sensor with beta compensation and fan control LM99 Remote and Local Temperature Sensor with TruTherm Technology and SMBus Interface
Precision ADCs
ADC128D818 12-Bit, 82SPS, 8-Ch Delta-Sigma ADC with Temp Sensor, INT / EXT Voltage Reference & I2C Interface
Simulation model

LM93 IBIS Model

SNAM023.ZIP (5 KB) - IBIS Model
Package Pins Download
TSSOP (DGG) 56 View options

Ordering & quality

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  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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