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EMC2103

Microchip
Part Number EMC2103
Manufacturer Microchip
Description RPM-Based Fan Controller
Published Jun 17, 2015
Detailed Description RPM-Based Fan Controller with Hardware Thermal Shutdown EMC2103 PRODUCT FEATURES Datasheet General Description The E...
Datasheet PDF File EMC2103 PDF File

EMC2103
EMC2103

Overview
RPM-Based Fan Controller with Hardware Thermal Shutdown EMC2103 PRODUCT FEATURES Datasheet General Description The EMC2103 is an SMBus compliant fan controller with up to up to 3 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 PWM 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 ±0.
5°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 EMC2103 also includes a hardware programmable temperature limit and dedicated system shutdown output for thermal protection of critical circuitry.
Applications  Notebook Computers  Projectors  Graphics Cards  Industrial and Networking Equipment Features  Programmable Fan Control circuit — 4-wire fan compatible — High and low frequency PWM  RPM based fan control algorithm — 2.
5% accuracy from ~500RPM to 16k RPM — Detects fan aging and variation  Temperature Look-Up Table — Allows programmed fan response to temperature — Controls fan speed or PWM drive setting — Allows externally set temperature data to drive fan — Supports DTS data from CPU  Up to Three External Temperature Channels (EMC2103-2 and EMC2103-4 only) — Supports 45nm, 60nm, and 90nm CPU diodes — Automatically detects and supports CPUs requiring BJT or Transistor models — Resistance error correction — Supports discrete transistors (i.
e.
2N3904) — ±0.
5°C accurate (60°C to 125°C) — 0.
125°C resolution  Hardware Programmable Thermal Shutdown Temperature — Cannot be altered by software — 65°C to 127°C Range  Programmable High and Low Limits for all channels  Internal Temperature Monitor — ±1°C accuracy ...


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