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EMC2113 Datasheet(PDF) 1 Page - Microchip Technology |
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EMC2113 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 88 page  2013 Microchip Technology Inc. DS20005251A-page 1 Datasheet PRODUCT FEATURES EMC2113 RPM-Based Fan Controller with Multiple Temperature Zones & Hardware Thermal Shutdown General Description The EMC2113 is an SMBus compliant fan controller. 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 EMC2113 includes a temperature monitor that measures up to three (3) external diodes and the internal diode. 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 device includes high and low limits for all temperature channels as well as a hardware set critical temperature limit. This hardware set limit drives a dedicated system shutdown pin. Finally, the device includes an open-drain, active low interrupt pin to flag temperature or fan control errors. Applications Notebook Computers Projectors Graphics Cards Industrial and Networking Equipment Features Programmable Fan Control circuit — 4-wire fan compatible — Both Low and High frequency PWM RPM-based fan control algorithm — 2% accurate from 500 RPM to 16k RPM — Automatic Tachometer feedback Temperature Look-Up Table — Controls fan speed or PWM drive setting — Eight steps that incorporate up to four temperature zones simultaneously (user selectable) — Supports forced DTS or standard temperature data — Allows external PWM input (150Hz to 40kHz) Up to Three External Temperature Channels — Supports transistor model for 90nm - 45nm Intel CPUs — Resistance Error Correction and Beta Compensation — 1°C accurate (60°C to 125°C) — 0.125°C resolution — Programmable High and Low limits Hardware Programmable Thermal Shutdown Temperature — Cannot be altered by software — 65°C to 127°C Range — Dedicated system shutdown interrupt pin Internal Temperature Monitor — ±1°C accuracy — 0.125°C resolution 3.3V Supply Voltage Open drain interrupt pin SMBus 2.0 Interface — SMBus Alert compatible — Selectable SMBus Address via pull-up resistor and ADDR_SEL pin — Block Read and Write Available in 16-pin 4mm x 4mm QFN RoHS Compliant package |
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