ah291 Diodes, Inc., ah291 Datasheet
ah291
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ah291 Summary of contents
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... AH291 Rev. 2 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR General Description AH291 is a monolithic fan motor controller with Hall sensor’s capability. It contains two complementary open-collector drivers for motor’s coil driving, automatic lock shutdown and restart function relatively. Rotor-lock shutdown detection circuit turns off the output driver when the rotor is blocked to avoid coil overheat ...
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... Pin Assignment Front View 291 DOB 4 : GND SIP-4L Pin Descriptions AH291 Rev. 2 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR DOB Vdd 5 4 291 GND DO SOT25 Name Description Input Power Output Pin DOB Output Pin ...
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... Regulator Hall Plate Typical Application Circuit 1.8V/5.75V Notes: R1, R2: typical C1, C2, C3: typical 2.2 F The R, C value need to be fine tuned based on coils design. AH291 Rev. 2 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR Lock Shutdown and Automatic Recovery Control Logic Amp. 4 GND ...
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... The output of IC will be switched after the supply voltage is over 1.8V, but the magnetic characteristics won't be normal until the supply is over 2.0V. Truth Table IN- IN AH291 Rev. 2 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR ( T = 25° Symbol O(AVE) I O(PEAK) SIP-4L ...
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... T (°C) a 198 P (mW AH291 Rev. 2 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR = 25 ° 24V, unless otherwise specified ) A CC Symbol Min. Bop -- Brp -60 Bhy -- ...
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... AH291 Rev. 2 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR ( SOT25 ) 100 166 147 129 110 tio ...
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... Marking Information (1) SIP-4L Part Number (2) SOT25 (3) SOT89-5L AH291 Rev. 2 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR ( Front View ) 291 Nth week 01~ Internal Code: A~Z (Top View RA:AH291 Year: 0 Month: A~L 291 Internal code a~z : Lead Free ...
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... Package Information (1) SIP-4L Active Area Depth Marking side 0.7mm Package Dimension AH291 Rev. 2 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR (unit: mm www.diodes.com CONTROLLER Package Sensor Location 1.97mm 1.04mm DECEMBER 2006 © AH291 Diodes Incorporated ...
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... Package Information (2) SOT25 (3) SOT89-5L AH291 Rev. 2 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR ( Continued ) www.diodes.com AH291 CONTROLLER DECEMBER 2006 © Diodes Incorporated ...
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... Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AH291 Rev. 2 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR IMPORTANT NOTICE ...