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EMC2105

Status: In Production

Features:

  • 600mA, 5V, High Side Fan Driver
  • Optional fan aging detection
  • 2% accuracy from 500RPM to 16k RPM
  • Allows programmed fan response to temperature
  • 1 to 4 thermal zones to control fan driver
  • Controls fan speed or fan drive setting
  • Allows externally generated temperature data to control fan drivers including two DTS channels
  • Designed to support 45nm, 60nm, and 90nm CPUs
  • Automatically detects and supports CPUs requiring the BJT or Transistor models
  • Resistance error correction
  • 1°C accurate (60°C to 100°C)
  • 0.125°C resolution
  • Detects fan aging and variation
  • Up to three thermistor compatible voltage inputs
  • Cannot be altered by software
  • 60°C to 122°C Range or 92°C to 154°C Range
  • Programmable High and Low Limits for all channels
  • 3.3V Supply Voltage
  • SMBus Alert compatible
  • Available in 20-pin, QFN RoHS Compliant Package (4mm x 4mm)
  • Notebook Computers
  • Embedded Applications
  • Projectors
  • Industrial and Networking Equipment
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The EMC2105 is an SMBus compliant fan controller with up to five (up to 4 external and 1 internal) temperature channels. The fan driver can be operated using two methods each with two modes. The methods include an RPM based Fan Speed Control Algorithm and a direct drive setting. The modes include manually programming the desired settings or using the internal programmable temperature look-up table to select the desired setting based on measured temperature.

The temperature monitors offer 1°C accuracy (for external diodes) with sophisticated features to reduce errors introduced by series resistance and beta variation of substrate thermal diode transistors commonly found in processors.

The EMC2105 also includes a hardware programmable temperature limit and dedicated system shutdown output for thermal protection of critical circuitry.

Additional Features

    Features

    • Programmable Fan Control circuit
      • 600mA, 5V, High Side Fan Driver
      • Optional fan aging detection
    • RPM based fan control algorithm
      • 2% accuracy from 500RPM to 16k RPM
    • Temperature Look-Up Table
      • Allows programmed fan response to temperature
      • 1 to 4 thermal zones to control fan driver
      • Controls fan speed or fan drive setting
      • Allows externally generated temperature data to control fan drivers including two DTS channels
    • Up to Four External Temperature Channels
      • Designed to support 45nm, 60nm, and 90nm CPUs
      • Automatically detects and supports CPUs requiring the BJT or Transistor models
      • Resistance error correction
      • 1°C accurate (60°C to 100°C)
      • 0.125°C resolution
      • Detects fan aging and variation
    • Up to three thermistor compatible voltage inputs
    • Hardware Programmable Thermal Shutdown Temperature
      • Cannot be altered by software
      • 60°C to 122°C Range or 92°C to 154°C Range
    • Programmable High and Low Limits for all channels
    • 3.3V Supply Voltage
    • SMBus 2.0 Compliant
      • SMBus Alert compatible
    • Available in 20-pin, QFN RoHS Compliant Package (4mm x 4mm)

    Applications

    • Notebook Computers
    • Embedded Applications
    • Projectors
    • Industrial and Networking Equipment
Parametrics
Name
Value
comments
Fan Controller with Thermal Mgt
# Fans Drivers
1
PWM/Linear Control
Linear
# Remote Temperature Monitors
4
Ambient Temperature Sensor
1
Typical Accuracy
±0.25
Max Accuracy
±1.0
Maximum Temperature Range
-40 to 85
Vcc Range (V)
3.3 to 5.0
SMBus Alert
Yes
System Shutdown
Yes
Voltage Monitors
Yes

Documents

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
EMC2105-BP-TR
0.043100
0.212121
20
QFN
4x4x0.9mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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