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EMC2106 Datasheet(PDF) 1 Page - SMSC Corporation |
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EMC2106 Datasheet(HTML) 1 Page - SMSC Corporation |
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1 / 106 page  SMSC EMC2106 DATASHEET Revision 1.72 (11-01-07) Datasheet PRODUCT FEATURES EMC2106 Dual RPM-Based Linear Fan Controller with Hardware Thermal Shutdown General Description The EMC2106 is an SMBus compliant fan controller with up to five (up to 4 external and 1 internal) temperature channels. The fan drivers 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 EMC2106 also includes a hardware programmable temperature limitS and dedicated system shutdown output for thermal protection of critical circuitry. Applications Notebook Computers Embedded Applications Projectors Industrial and Networking Equipment Features Two Programmable Fan Control circuits. — 4-wire fan compatible — High speed PWM (26khz) — Low speed PWM (9.5Hz - 2240Hz) — 600mA, 5V, High Side Fan Driver — Optional detection of aging fans — 1mA Linear DAC Fan Driver 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 each fan driver — Controls fan speed or 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 Three dedicated comparator outputs for External Diode 1, External Diode 2, and External Diode 3 (OVERT1#, OVERT2#, OVERT3#) 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 — 2 selectable SMBus addresses — SMBus Alert compatible — Option to load register set from external EEPROM Available in 28-pin QFN package - Lead Free RoHS compliant (5mm x 5mm) |
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