EMC2101-ACZL-TR

EMC2101-ACZL-TR is an SMBus fan control with 1°C accurate temperature monitoring. It is an SMBus 2.0 compliant, integrated fan control solution complete with two temperature monitors, one external and one internal. Each temperature channel has programmable high limits that can assert an interrupt. The fan drive is selectable as a pulse width modulator (PWM) or linear (DAC) output. The fan control output, whether the PWM or DAC drive circuit, uses an eight-position look-up table to allow the user to program the fan speed profile based on temperature. The DAC output ranges from 0V to VDD with up to 6bit resolution while the PWM output has a range of 0% to 100% with up to 64 steps. It has an option to automatically upload the contents of an attached SMBus-compatible EEPROM for auto-programming upon power-up. It is used in applications such as graphics processors, embedded application fan drive, PWM controllers + temp sensor.

• Self-programming with available SMBus compatible EEPROM
• Selectable PWM or DAC fan driver output, automatic beta compensation
• Resistance error correction, SMBus 2.0 compliant interface, supports TIMEOUT
• Supply voltage is 3V typical at (VDD = 3.0V to 3.6V, TA = 0°C to +85°C)
• Supply current is 0.6mA typical at (VDD = 3.0V to 3.6V, TA = 0°C to +85°C)
• Temperature accuracy is ±1°C typical at (VDD = 3.0V to 3.6V, TA = 0°C to +85°C)
• Total unadjusted error is 5% typical at (VDD = 3.0V to 3.6V, TA = 0°C to +85°C)
• Settling time to within 1% is 40µs typical at (capacitive load = 100pF)
• Clock frequency is 400KHz maximum at (VDD = 3.0V to 3.6V, TA = -40°C to 85°C)
• Operating temperature range from -40°C to +125°C, 8-lead MSOP package