MFG:Microchip Technology Category:Integrated Circuits (ICs) Package Cooled:DIP D/C:96/97
TC643VPA, TC646, TC646BEOA Datasheet download
Category: Integrated Circuits (ICs)
MFG: Microchip Technology
Package Cooled: DIP
D/C: 96/97
Description: IC PWM FAN SPEED CTRLR SD 8-SOIC
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Datasheet: TC602
File Size: 50525 KB
Manufacturer:
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PDF/DataSheet Download
Datasheet: TC646
File Size: 485135 KB
Manufacturer: MICROCHIP [Microchip Technology]
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PDF/DataSheet Download
Datasheet: TC602
File Size: 50525 KB
Manufacturer:
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| Technical/Catalog Information | TC643VPA |
| Vendor | Microchip Technology |
| Category | Integrated Circuits (ICs) |
| Applications | DC Motor Driver, Brushless (BLDC) |
| Number of Outputs | 1 |
| Voltage - Supply | 2.7 V ~ 5.5 V |
| Voltage - Load | 15V |
| Current - Output | - |
| Operating Temperature | 0°C ~ 85°C |
| Package / Case | 8-DIP (300 mil) |
| Packaging | Tube |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Other Names | TC643VPA TC643VPA |
The TC646 is a switch mode, fan speed controller for use with brushless DC fans. Temperature proportional speed control is accomplished using pulse width modulation(PWM). A thermistor (or other voltage output temperature sensor) connected to the VIN input furnishes the required control voltage of 1.25V to 2.65V (typical) for 0% to 100% PWM duty cycle. The TC646 automatically suspends fan operation when measured temperature (VIN) is below a user programmed minimum setting (VAS). An integrated Start-up Timer ensures reliable motor start-up at turn-on, coming out of shutdown mode, auto-shutdown mode or following a transient fault.
The TC646 features Microchip Technology's proprietary FanSense™ technology for increasing system reliability. In normal fan operation, a pulse train is present at SENSE (Pin 5). A missing-pulse detector monitors this pin during fan operation. A stalled, open, or unconnected fan causes the TC646 to trigger its Start-up Timer once. If the fault persists, the FAULT output goes low and the device is latched in its shutdown mode. FAULT is also asserted if the PWM reaches 100% duty cycle, indicating a possible thermal runaway situation, although the fan continues to run. See Section 5.0, "Typical Applications", for more information and system design guidelines.
The TC646 is available in the 8-pin plastic DIP, SOIC and MSOP packages and is available in the industrial and extended commercial temperature ranges.
Supply Voltage ............................................................6V
Input Voltage, Any Pin..... (GND 0.3V) to (VDD+0.3V)
Package Thermal Resistance:
PDIP (RJA).......................................................125°C/W
SOIC (RJA) .....................................................155°C/W
MSOP (RJA) ....................................................200°C/W
Specified Temperature Range ........... -40°C to +125°C
Storage Temperature Range.............. -65°C to +150°C
| Technical/Catalog Information | TC646BEOA |
| Vendor | Microchip Technology |
| Category | Integrated Circuits (ICs) |
| Applications | Fan Controller, Brushless (BLDC) |
| Number of Outputs | 1 |
| Voltage - Supply | 3 V ~ 5.5 V |
| Voltage - Load | - |
| Current - Output | - |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 8-SOIC (3.9mm Width) |
| Packaging | Tube |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | TC646BEOA TC646BEOA |
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