AH292-YG-13

AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Description AH292 is a monolithic fan motor controller with Hall sensor’s capability. It contains two complementary open-collector transistors for motor’s coil driving, automatic lock current shutdown, and recovery protections. In addition a Frequency generator (FG) output is also available for speed detection. Rotor-lock shutdown detection circuit turns off the output driver when the rotor is blocked to avoid coil overheat. Then, the automatic recovery circuit will restart the motor. These protected actions are repeated and periodic during the blocked period. Until the blocking is removed, the motor recovers and runs normally. The AH292 is available in SOT89-5L package. Pin Assignments (Top View) Vdd 1 2 292 5 FG GND DO 3 7 DOB 4 SOT89-5L Features • • • • • • • • • On Chip Hall Sensor Rotor-Locked Shutdown Automatically Restart Frequency Generator (FG) Output Built-in Zener Protection for Output Driver Operating Voltage: 1.8V to 5.75V Output Current: IO(AVE) = 400mA Packaged in SOT89-5L Green Molding Compound Applications • • Two-coil BLDC cooling fans Low to medium voltage, low power BLDC motors Typical Application Circuit (Note 1) D2 Vdd (1.8V/5.75V) R pu D1 1 2 3 4 5 292 Coil 2 GND Coil 1 FG C3 Notes: R1 C1 R2 C2 1. R1, R2: typical 56 Ohm C1, C2, C3: typical 2.2µF The R, C value need to be fine tuned based on coils design. 1.8V/5.75V DC Brush-less Fan with FG output function AH292 Document number: DS31049 Rev. 7 - 2 1 of 8 www.diodes.com June 2010 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Pin Descriptions Pin Name FG Vdd DO DOB GND Description Frequency Generation Input Power Output Pin Output Pin Ground Functional Block Diagram Vdd Lock detect, shutdown and automatic re-start Regulator DO Hall Plate Amp. Control Logic DOB GND FG AH292 Document number: DS31049 Rev. 7 - 2 2 of 8 www.diodes.com June 2010 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Absolute Maximum Ratings (TA = 25°C) Symbol Vdd IO(AVE) IO(PEAK) PD TST TJ Characteristics Operating Supply Voltage Output Current Output Current Power Dissipation Storage Temperature Maximum Junction Temperature Rating 8 400 700 800 -55 ~ 150 150 Unit V mA mA mW °C °C Recommended Operating Conditions Symbol Vdd TA Notes: Characteristic Supply Voltage (Note 2) Operating Ambient Temperature Conditions Operating Operating Min 1.8 -20 Max 5.75 100 Unit V °C 2. 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. Electrical Characteristics (TA = 25 °C, Vdd = 5V, unless otherwise specified) Symbol Idd TRLP-ON TRLP-OFF VOUT(SAT) RDS(ON) VOL Vz Truth Table INH L Characteristics Supply current Rotor Lock Protection On Time Rotor Lock Protection Off Time Output Saturation Voltage Output On Resistance FG Output Vds Output Zener-Breakdown Voltage Conditions Operating Min 2.4 Typ. 2.6 0.4 3 300 600 1.75 0.5 15 Max 4.0 3.6 Unit mA Sec Sec mV mV ohm V V IO = 180mA IO = 350mA IO = 10mA IN+ L H - CT L L H OUT1 H L off OUT2 L H off FG H L - Mode Rotating Rotating Lockup protection activated AH292 Document number: DS31049 Rev. 7 - 2 3 of 8 www.diodes.com June 2010 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Magnetic Characteristics (TA = 25 °C, Vdd = 5V, unless otherwise specified, Note 3) (1mT = 10 Gauss) Symbol Bop Brp Bhy Notes: Characteristics Operation Point Release Point Hysteresis Min 10 -60 - Typ. 30 -30 60 Max 60 -10 - Unit Gauss Gauss Gauss 3. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering. Operating Characteristics DOB Output Voltage in Volts Output Voltage in Volts DO RP 12 10 8 6 4 OFF OFF 12 10 8 6 4 OP ON 2 OP Vsat RP Vsat 2 ON Brp 0 Bop Magnetic Flux Density in Gauss Brp 0 Bop Magnetic Flux Density in Gauss S Marking side N ( SOT89-5L ) AH292 Document number: DS31049 Rev. 7 - 2 4 of 8 www.diodes.com June 2010 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Performance Characteristics TA (°C) PD (mW) TA (°C) PD (mW) 25 800 105 288 50 640 110 256 60 576 115 224 70 512 120 192 75 480 125 160 80 448 130 128 85 416 135 96 90 384 140 64 95 352 145 32 100 320 150 0 P D ( mW ) 900 800 700 600 500 400 300 200 100 0 -4 0 0 25 P ower Dissipation Curve 50 75 10 0 125 1 50 T A ( °C) AH292 Document number: DS31049 Rev. 7 - 2 5 of 8 www.diodes.com June 2010 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Ordering Information AH 292 - Y G - 13 Package Y : SOT89-5L Green G : Green (Note 4) Packing 13 : Tape & Reel Device Package Code Y Packaging (Note 5, 6) SOT89-5L AH292-YG-13 Notes: Bulk Part Number Quantity Suffix NA NA 13” Tape and Reel Part Number Quantity Suffix 2500/Tape & Reel -13 4. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 5. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. 6. Reverse taping as shown on Diodes Inc. Surface Mount (SMD) Packaging document AP02007, which can be found on our website http://www.diodes.com/datasheets/ap02007.pdf. Marking Information (Top View) 5 4 7 292 Y W X Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : Internal code A~Z : Green 1 2 SOT89-5L 3 AH292 Document number: DS31049 Rev. 7 - 2 6 of 8 www.diodes.com June 2010 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Package Outline Dimensions (All Dimensions in mm) Sensor Location AH292 Document number: DS31049 Rev. 7 - 2 7 of 8 www.diodes.com June 2010 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2010, Diodes Incorporated www.diodes.com AH292 Document number: DS31049 Rev. 7 - 2 8 of 8 www.diodes.com June 2010 © Diodes Incorporated