LM93系列介绍资料 - 万联芯城

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LM93

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具有 2 条远程和 1 条本地通道的温度传感器，带硬件监控器和 16 个电源电压监控器

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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.

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.

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)

113.4 mm² 14 x 8.1

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LM93

具有 2 条远程和 1 条本地通道的温度传感器，带硬件监控器和 16 个电源电压监控器

4000-306-326