MAX6684ESA Maxim Integrated Products, MAX6684ESA Datasheet
MAX6684ESA
Specifications of MAX6684ESA
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MAX6684ESA Summary of contents
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... Works with Ordinary 2-Wire Fans o No Fan Tachometer Output Required o No Software Development Required o No Analog Circuit Design Required o Logic-Level Fan Driver Control o Works with Fans Rated Up to 24V/250mA Applications PART MAX6684ESA TOP VIEW 12V 10kΩ 0.1µF Power Switch Features Ordering Information ...
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Fan-Failure Detector with Integrated Power Switch ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND, Unless Otherwise Noted V ........................................................................-0.3V to +6.0V CC FC+, FC-.....................................................-0. OFF, FAIL ..............................................................-0.3V to +6.0V PGND ....................................................................-0.3V to +0.3V SENSE to PGND ..................................................-0.3V to +28.0V ...
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Fan-Failure Detector with Integrated (V = 3.3V +25°C, unless otherwise noted vs. TEMPERATURE DSON 2 1.6 1.2 0 5. 300mA SENSE 0 -40 -15 10 ...
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Fan-Failure Detector with Integrated Power Switch V CC SENSE CURRENT-SENSE AND CURRENT-LIMITING CIRCUIT OFF FC+ 70mV C F FC- GND Figure 1. MAX6684 Functional Diagram UNDERCURRENT* 1s DELAY NORMAL UNDERCURRENT* CURRENT FAN ON, FAIL LOW OVERCURRENT *INVALID COMMUTATION CURRENT NOTE: ...
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Fan-Failure Detector with Integrated 100Hz ƒ FAIL Figure 3. MAX6684 Commutation Fault Timing Diagram CURRENT FLUCTUATION vs. COMMUTATION FREQUENCY FAIL HIGH FAIL LOW 100 200 CURRENT COMMUTATION FREQUENCY ...
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Fan-Failure Detector with Integrated Power Switch 3. 10kΩ OFF MAX6684 FC+ FAIL C F FC- SENSE GND PGND Figure 6. Increased Current Capability Using External Resistance The FAIL output is an active-low, open-drain alarm. Three fan-failure modes are ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 7 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...