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P82CF201 Datasheet Low Power / Low Price Dual Fan Manager

Manufacturer: NXP Semiconductors

Overview: INTEGRATED CIRCUITS P82CF201 Low power, low price dual fan manager Product data Supersedes data of 2002 Nov 04 2002 Nov 18 Philips Semiconductors Philips Semiconductors Product data Low power, low price dual fan manager.

General Description

The P82CF201 is a 20-pin single-chip dual digital fan controller designed for use with brushless DC fan motors.

A thermistor (or temperature resistive sensor) connected to the RthermC input provides the required resistance of 10K to 1.75 KΩ for 30% to 98% PWM duty cycle.

With temperature less than 25 °C (thermistor resistance more than 10 KΩ) and THRESHOLD is set to LOW, the fan will be off.

Key Features

  • a Turn-on Delay for a second fan when both fans have to turn-on. This reduces the in-rush current and suppresses acoustic noise. The P82CF201 also features fan fault sensing for enhancing system protection and reliability. It detects the presence of a fan, when the running fan fails or jams using the voltage on VSENSE pin and asserts the fault signal. The fault condition also triggers the maximum PWM applied to the running fan. The fault is also asserted when the thermistor resistance is less th.

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