TC665EUN

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Details for Microchip Technology

TC665EUN

Single SMBusTM PWM Fan Speed Controller With Fan Fault & Over-Temperature Detec
Buy Directly from Microchip Technology (3210 in Stock)
$1.3400 per unit
Series Information for TC665EUN - Microchip Technology

Features

  • feature
    2-Wire SMBusu2122-Compatible Interface
  • feature
    Efficient PWM Fan Drive
  • feature
    FanSenseu2122 Protects against Fan Failure and Eliminates the Need for 3-wire Fans
  • feature
    Over Temperature Detection (TC665)
  • feature
    Provides RPM Data
  • feature
    Software Controlled Shutdown Mode for "Green" Systems
  • feature
    Supports Any Fan Voltage
  • feature
    Supports Low Cost NTC/PTC T

Description

IC PWM FAN SPEED CNTRL 10-MSOP
The TC664/TC665 devices are PWM mode fan speed controllers with FanSense technology for use with brushless DC fans. These devices implement temper- ature proportional fan speed control which lowers acoustic fan noise and increases fan life. The voltage at VIN (Pin 1) represents temperature and is typically provided by an external thermistor or voltage output temperature sensor. The PWM output (VOUT) is adjusted between 30% and 100%, based on the volt- age at VIN. The PWM duty cycle can also be pro- grammed via SMBus to allow fan speed control without the need for an external thermistor. If VIN is not con- nected, the TC664/TC665 will start driving the fan at a default duty cycle of 39.33%. See Section 4.3, "Fan Startup", for more details). In normal fan operation, a pulse train is present at the SENSE pin (Pin 8). The TC664/TC665 use these pulses to calculate the fan revolutions per minute (RPM). The fan RPM data is used to detect a worn out, stalled, open or unconnected fan. An RPM level below the user-programmable threshold causes the TC664/ TC665 to assert a logic low alert signal (FAULT). The default threshold value is 500 RPM. Also, if this condi- tion occurs, FF (bit 0<0>) in the Status Register will also be set to a ‘1’. An over-temperature condition is indicated when the voltage at VIN exceeds 2.6 V (typical). The TC664/ TC665 devices indicate this by setting OTF(bit 5) in the Status Register to a '1'. The TC665 device also pulls the FAULT line low during an over-temperature condition. The TC664/TC665 devices are available in a 10-Pin MSOP package and consume 150 µA during opera- tion. The devices can also enter a low-power shutdown mode (5 µA, typ.) by setting the appropriate bit in the Configuration Register. The operating temperature range for these devices is -40°C to +85ºC. 10-Pin MSOP

Specifications

Motor Type:
PWM
No. of Outputs:
1Outputs
Output Current:
5mA
Output Voltage:
4.4V
Driver Case Style:
MSOP
No. of Pins:
10Pins
Supply Voltage Min:
3V
Supply Voltage Max:
5.5V
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (15-Jan-2018)
Base Number:
665
Frequency:
30Hz
Input Current:
150µA
Operating Temperature Range:
-40°C to +85°C
Supply Voltage Range:
3V to 5.5V

Alternate Descriptions

Avnet America

PWM Fan Motor Speed Controller 10-Pin MSOP Tube

Avnet America product

Microchip Technology Inc

Single SMBusTM PWM Fan Speed Controller With Fan Fault & Over-Temperature Detec

Future Electronics

TC664 Series 5.5 V PWM Fan Speed Controller w/ Fault Detection - MSOP-10