AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER General Description 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~5.75 V Output Current: IO( AVE ) = 400 mA • Lead Free Finish/RoHS Compliant for Lead Free products (Note 1) Lead Free Packages: SOT89-5L • 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. Ordering Information AH292 - X X X Package Y: SOT89-5L Note: 1. Packing Lead-Free L : Lead Free -B : -7/-13 : Bulk Taping RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Lead-free Device Package Code Packaging (Note 2) AH292-Y Y SOT89-5L Tube/Bulk Part Number Quantity Suffix NA NA 7” Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel -13 Note: 2. 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. AH292 Rev. 3 1 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Pin Assignment Vdd 1 5 FG AH292 GND 2 DO 3 74 DOB SOT89-5L Pin Descriptions Symbol FG Vdd DO DOB GND Description Frequency Generation Input Power Output Pin Output Pin Ground Block Diagram Vdd 2 Lock shutdown and Automatic recovery Regulator Hall Plate AH292 Rev. 3 3 DO 4 DOB Control Logic Amp. 5 1 GND FG 2 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Typical Application Circuit D2 Vdd (1.8V/5.75V) R pu 292 D1 Coil 2 1 2 3 4 Coil 1 5 GND FG C3 Notes: R1, R2: typical 56 O C1, C2, C3: typical 2.2μ F The R, C value need to be fine tuned based on coils design. R1 R2 C1 C2 1.8V/5.75V DC Brush-less Fan with FG output function Absolute Maximum Ratings Characteristics Operating Supply Voltage Output Current Power Dissipation Operating Temperature Storage Temperature Maximum Junction Temperature AH292 Rev. 3 ( TA = 25°C ) Symbol Rating Unit Vdd IO(AVE) IO(PEAK) 8 400 700 PD 800 mW Topr Tstg Tj -20 ~ 100 -55 ~ 150 150 °C °C °C 3 of 7 www.diodes.com V mA JANUARY 2007 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Electrical Characteristics Characteristics ( TA = 25 °C, Vdd = 5V, unless otherwise specified ) Symbol Conditions Min. Typ. Max. Unit Supply Voltage Vdd 1.8* - 5.75 V Supply current Locked Protection On Locked Protection Off Idd Operating Operating 2.4 - 2.6 0.4 3 300 600 1.75 0.5 15 4.0 3.6 - mA Sec Sec Tlrp-on Tlrp-off Output saturation voltage Output On Resistance FG output Vds Output Zener-breakdown Voltage *Note: VOUT (SAT ) IO = 180mA IO = 350mA Rds(on) Vol Vz IO = 10mA mV ohm V V 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 INH L - IN+ L H - CT L L H Magnetic Characteristics OUT1 H L off OUT2 L H off FG H L - Mode Rotating Rotating Lockup protection activated ( TA = 25 °C, Vdd = 5V, unless otherwise specified ) ( 1mT = 10 Gauss ) Characteristics Operation Point Release Point Hysteresis AH292 Rev. 3 Symbol Min. Typ. Max. Unit Bop Brp Bhy --60 -- 30 -30 60 60 --- Gauss Gauss Gauss 4 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Operating Characteristics RP DO 12 Output Voltage in Volts Output Voltage in Volts DOB OFF 10 8 6 4 ON 2 OP Vsat OFF 12 OP 10 8 6 4 RP 2 ON Vsat Brp 0 Bop Magnetic Flux Density in Gauss Brp 0 Bop Magnetic Flux Density in Gauss S Marking side N ( SOT25 ) AH292 Rev. 3 5 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Performance Characteristics (1) SOT89-5L TA (°C) 25 50 60 70 75 80 85 90 95 100 PD (mW) 800 640 576 512 480 448 416 384 352 320 TA (°C) 105 110 115 120 125 130 135 140 145 150 PD (mW) 288 256 224 192 160 128 96 64 32 0 PD (mW) Power Dissipation Curve 900 800 700 600 500 400 300 200 100 0 0 25 50 75 100 125 150 TA (°C) Marking Information (1) SOT89-5L 4 7 5 Y : Year: 0-9 M : Month: A~L 292 Y M X 1 AH292 Rev. 3 2 X : Internal code a~z : Lead Free 3 6 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated AH292 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Package Information (unit: mm) (1) Package type: SOT89-5L Sensor Location IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT 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. AH292 Rev. 3 7 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated