TC647 Microchip, TC647 Datasheet
TC647
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TC647 Summary of contents
Page 1
... TC647 to trigger its Start-up Timer once. If the fault persists, the FAULT output goes low and the device is latched in its shut- down mode. The TC647 is available in the 8-pin plastic DIP, SOIC and MSOP packages and is available in the industrial and extended commercial temperature ranges. V ...
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... TC647 Functional Block Diagram MIN V SHDN TC647 GND DS21447C-page 2 – + SHDN – + Control Logic PWM Timer Clock Generator Start-up Timer + – Missing Pulse Detect. + – 10k 70mV (typ OUT FAULT SENSE 2002 Microchip Technology Inc. ...
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... V x 0.19 — — — — 0.3 — 32/F — — 32/F — — 3/F — TC647 Units Test Conditions V mA Pins 6, 7 Open µ C(MAX) µA Pins 6, 7 Open µ 0.35V F MIN µA Note 1 µsec mA, Note 1 OH µ ...
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... PWM duty cycle (1.25V to 2.65V = 0% to 100%, typi- cal). The TC647 enters shutdown mode when During shutdown, the FAULT output is inactive SHDN and supply current falls to 25 µA (typical). The TC647 exits shutdown mode when V Section 5.0, “Typical Applications”, for more details. 2.4 Ground (GND) GND denotes the ground terminal ...
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... MIN case, the fan cannot remain disabled due to a fault condition as severe system dam- output is age could result. If the fan cannot be restarted, the system should be shut down. The TC647 may be configured to continuously attempt / SHDN fan restarts desired. and SHDN TC647 ™ ...
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... TC647 Continuous restart mode is enabled by connecting the FAULT output to V through a 0.1 µF capacitor, as MIN shown in Figure 3-1. When so connected, the TC647 automatically attempts to restart the fan whenever a fault condition occurs. When the FAULT output is driven low, the V input is momentarily pulled below MIN ...
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... Quit Normal Operation and go to Fan Fault. (9) End. 2002 Microchip Technology Inc. 4.3 Fan Fault Fan Fault is an infinite loop wherein the TC647 is latched in shutdown mode. This mode can only be released by a reset (i.e then above V SHDN ...
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... Fan Fault Fan Fault FAULT = OUT No V < MIN SHDN Yes No V > MIN REL Yes Power-up FIGURE 4-1: TC647 Behavioral Algorithm Flowchart. DS21447C-page 8 Normal Operaton Clear Missing Pulse Detector V < MIN SHDN No > REL No V OUT Proportional to Greater ...
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... The TC642EV is a larger board intended for benchtop development and analysis. At the very least, anyone contemplating a design using the TC647 should consult the documen- tation for both TC642EV and (DS21403) and TC642DEMO (DS21401). Figure 5-1 shows the base ...
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... V node added benefit, this configuration IN produces an output voltage delta of 1.4V, which is well within the range of the V specification of the C(SPAN) TC647. A 100 k NTC thermistor is selected for this application in order to keep minimum. DIV For the voltage range equal to 1.25V ...
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... Operations at Low Duty Cycle One boundary condition which may impact the selec- tion of the minimum fan speed is the irregular activation of the Diagnostic Timer due to the TC647 “missing” fan commutation pulses at low speeds. This is a natural consequence of low PWM duty cycles (typically 25% or less) ...
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... DS21447C-page 12 5.5 Output Drive Transistor Selection The TC647 is designed to drive an external transistor ] or MOSFET for modulating power to the fan. This is shown as Q and 5-9. The and a minimum sink current of 1 mA. Bipolar transistors or MOSFETs may be used as the power switching element, as shown in Figure 5-7. When high ...
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... BE(sat) GS CEO Min (V) ( TC647 = BE SENSE SAT BASE = FAN SENSE = BASE BASE = FAN FE in Section 1. given in the cho- BE( ) SAT BE ...
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... V DD -12V capacitor. Ground should be kept as short as possible. To keep fan noise off the TC647 ground pin, individual ground returns for the TC647 and the low side of the fan current sense resistor should be used. Design Example Step 1. Calculate R having a resistance and 4 ...
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... Output codes 001[B] to 111[B] operate the fan from roughly 40% to 100% of full speed. An open-drain output from the processor I/O can be used to reset the TC647 following detection of a fault condition. The FAULT output can be connected to the processor's interrupt input I/O pin, for polled operation (see Figure 5-10) ...
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... TC647 +5V Open-drain I/O0 Outputs I/O1 Analog or Digital CMOS Temperature I/O2 Outputs Data from one or more Sensors I/O3 CMOS Microcontroller GND INT FIGURE 5-10: TC647 as a Microcontroller Peripheral. DS21447C-page 16 (Optional) (RESET (MSB) 110 240 k . 360 (LSB ...
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... Standard marking consists of Microchip part number, year code, week code, traceability code (facility code, mask rev#, and assembly code). For marking beyond this, certain price adders apply. Please check with your Microchip Sales Office. 2002 Microchip Technology Inc. TC647 Example: TC647VPA 025 0215 Example: TC647VOA 0215 025 Example: TC647E 215025 DS21447C-page 17 ...
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... TC647 8-Lead Plastic Dual In-line (P) – 300 mil (PDIP Dimension Limits Number of Pins Pitch Top to Seating Plane Molded Package Thickness Base to Seating Plane Shoulder to Shoulder Width Molded Package Width Overall Length Tip to Seating Plane Lead Thickness Upper Lead Width ...
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... A1 .004 .007 .010 E .228 .237 .244 E1 .146 .154 .157 D .189 .193 .197 h .010 .015 .020 L .019 .025 .030 .008 .009 .010 B .013 .017 .020 TC647 A2 MILLIMETERS MIN NOM MAX 8 1.27 1.35 1.55 1.75 1.32 1.42 1.55 0.10 0.18 0.25 5.79 6.02 6.20 3.71 3.91 3.99 4.80 4.90 5.00 0.25 0.38 0.51 0.48 0.62 0. 0.20 0.23 0.25 0.33 0.42 0. ...
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... TC647 6.2 8-Lead Plastic Micro Small Outline Package (MS) (MSOP (F) Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Foot Length Footprint (Reference) Foot Angle Lead Thickness Lead Width Mold Draft Angle Top ...
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... Standard Reel Component Orientation for TR Suffix Device Pitch (P) Part Per Full Reel 2500 User Direction of Feed P Standard Reel Component Orientation for TR Suffix Device Pitch (P) Part Per Full Reel 2500 TC647 W Reel Size Reel Size 13 in DS21447C-page 21 ...
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... TC647 NOTES: DS21447C-page 22 2002 Microchip Technology Inc. ...
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... Microchip's development systems software products. Plus, this line provides information on how customers ® ® can receive the most current upgrade kits.The Hot Line or Microsoft Numbers are: 1-800-755-2345 for U.S. and most of Canada, and 1-480-792-7302 for the rest of the world. TC647 092002 DS21447C-page23 ...
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... Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y Device: TC647 Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs you find the organization of this document easy to follow? If not, why? 4 ...
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... Examples: a) TC647VOA: PWM Fan Speed Controller w/ Fault Detection, SOIC package. b) TC647VUA: PWM Fan Speed Controller w/ Fault Detection, MSOP package. c) TC647VPA: PWM Fan Speed Controller w/ Fault Detection, PDIP package. d) TC647EOATR: PWM Fan Speed Controller w/Fault Detection, SOIC package, Tape and Reel. DS21447C-page25 ...
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... TC647 NOTES: DS21447C-page 26 2002 Microchip Technology Inc. ...
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... Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip’s products as critical com- ponents in life support systems is not authorized except with express written approval by Microchip. No licenses are con- veyed, implicitly or otherwise, under any intellectual property rights ...
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... Mississauga, Ontario L4V 1X5, Canada Tel: 905-673-0699 Fax: 905-673-6509 DS21447C-page ALES AND ERVICE ASIA/PACIFIC Australia Microchip Technology Australia Pty Ltd Suite 22, 41 Rawson Street Epping 2121, NSW Australia Tel: 61-2-9868-6733 Fax: 61-2-9868-6755 China - Beijing Microchip Technology Consulting (Shanghai) Co., Ltd., Beijing Liaison Office Unit 915 Bei Hai Wan Tai Bldg ...