LM85数据手册TI中文资料规格书

描述 Description

General Description
The LM85, hardware monitor, has a two wire digital interface compatible with SMBus 2.0. Using an 8-bit Σ∆ ADC, the LM85 measures:
  – the temperature of two remote diode connected transistors as well as its own die
  – the VCCP, 2.5V, 3.3VSBY, 5.0V, and 12V supplies (internal scaling resistors).

To set fan speed, the LM85 has three PWM outputs that are each controlled by one of three temperature zones. The LM85 includes a digital filter that can be invoked to smooth temperature readings for better control of fan speed. The LM85 has four tachometer inputs to measure fan speed.
Limit and status registers for all measured values are in cluded.

特性 Features

■ 2-wire, SMBus 2.0 compliant, serial digital interface
■ 8-bit Σ∆ ADC
■ Monitors VCCP, 2.5V, 3.3 VSBY, 5.0V, and 12V motherboard/processor supplies
■ Monitors 2 remote thermal diodes
■ Programmable autonomous fan control based on temperature readings
■ Noise filtering of temperature reading for fan control
■ 1.0˚C digital temperature sensor resolution
■ 3 PWM fan speed control outputs
■ 4 fan tachometer inputs
■ Monitors 5 VID control lines
■ 24-pin QSOP package
■ XOR-tree test mode
Applications
■ Desktop PC
■ Microprocessor based equipment
   (e.g. Base-stations, Routers, ATMs, Point of Sales)

应用 Application

■ Desktop PC
■ Microprocessor based equipment
   (e.g. Base-stations, Routers, ATMs, Point of Sales)