EMC2103-4 Series

EMC2103-2

Catalog

EMC2103-2

Part	Topology	Package / Case	Supplier Device Package	Mounting Type	Output Type	Function	Voltage - Supply	Accuracy	Sensor Type
Microchip Technology EMC2103-4-AP-TR	ADC (Sigma Delta) Multiplexer Register Bank	16-VQFN Exposed Pad	16-QFN (4x4)	Surface Mount	SMBus	Fan Control Temp Monitor	3.3 V	2 °C	Internal and External
Microchip Technology EMC2103-1-KP-TR	ADC (Sigma Delta) Multiplexer Register Bank	12-VQFN Exposed Pad	12-QFN (4x4)	Surface Mount	SMBus	Fan Control Temp Monitor	3.3 V	2 °C	Internal and External
Microchip Technology EMC2103-2-AP-TR	ADC (Sigma Delta) Multiplexer Register Bank	16-VQFN Exposed Pad	16-QFN (4x4)	Surface Mount	SMBus	Fan Control Temp Monitor	3.3 V	2 °C	Internal and External

Catalog

EMC2103-2

Key Features

• * 4-wire fan compatible

• * High and low frequency PWM

• * 2.5% accuracy from 500RPM to 16k RPM

• * Detects fan aging and variation

• * 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

• * 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)

• * 1°C accurate (60°C to 125°C)

• * 0.125°C resolution

• * Cannot be altered by software

• * 65°C to 127°C Range

• * Programmable High and Low Limits for all channels

• * 2°C accuracy

• * 0.125°C resolution

• * 3.3V Supply Voltage

• * SMBus Alert compatible

• * Two dedicated GPIOs (EMC2103-2 and EMC2103-4 only)

• * Available in 12-pin, QFN RoHS Compliant Package (EMC2103-1) or 16-pin, QFN RoHS Compliant Package (EMC2103-2 and EMC2103-4)

• * Notebook Computers

• * Projectors

• * Graphics Cards

• * Industrial and Networking Equipment

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 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 EMC2103 also includes a hardware programmable temperature limit and dedicated system shutdown output for thermal protection of critical circuitry.