AH293 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER General Description Features • • • • • • • On Chip Hall Sensor Rotor-Locked Shutdown Automatically Restart Rotor-State Detection (RD) 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) Packages: SOT89-5L • AH293 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. Also, rotor-state detection (RD) output is 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 AH293 - X X X Note: 1. Package Lead-Free Y: SOT89-5L L : Lead Free Packing -7/-13 : Taping RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device Lead-free AH293-Y Package Code Y Packaging (Note 2) SOT89-5L 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. AH293 Rev. 2 1 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated AH293 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Pin Assignment Vdd 1 GND 2 5 RD AH293 DO 3 74 DOB SOT89-5L Pin Descriptions Symbol RD Vdd DO DOB GND AH293 Rev. 2 Description Rotor-State Detection Input Power Output Pin Output Pin Ground 2 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated AH293 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Block Diagram V dd 2 Lock shutdown and Automatic recovery Regulator Hall Plate 3 DO 4 DOB Control Logic Amp. 5 1 GND RD Typical Application Circuit D2 V dd (1.8V/5.75V) R pu 293 D1 Coil 2 1 2 3 4 Coil 1 5 GND RD (alarm) 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. C3 R1 R2 C1 C2 1.8V/5.75V DC Brush-Less Fan with RD Output Function AH293 Rev. 2 3 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated AH293 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Absolute Maximum Ratings ( TA = 25°C ) Characteristics Symbol Operating Supply Voltage Rating Vdd Power Dissipaton Operating Temperature Storage Temperature Maximum Junction Temperature Electrical Characteristics Characteristics 8 400 700 800 -20 ~ 100 -55 ~ 150 150 IO (AVE) IO (PEAK) PD Output Current Unit Top Tst Tj V mA mW °C °C °C ( TA = 25 °C, Vdd = 5V, unless otherwise specified ) Symbol Conditions Min. Typ. Max. Unit Supply Voltage Vdd Operating 1.8* - 5.75 V Supply Current Locked Protection On Locked Protection Off Idd 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 RD 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 OUT1 H L off OUT2 L H off RD L L off Mode Rotating Rotating Lockup protection activated Latch-type RD output is low during rotation and high during stop AH293 Rev. 2 4 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated AH293 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Magnetic Characteristics ( TA = 25 °C, Vdd = 5V, unless otherwise specified ) ( 1mT = 10 Gauss ) Characteristics Symbol Min. Typ. Max. Unit Bop Brp Bhy --60 -- 30 -30 60 60 --- Gauss Gauss Gauss Operation Point Release Point Hysteresis 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 ( SOT89-5 ) AH293 Rev. 2 5 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated AH293 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 P D (m W ) P o w e r D is s ip a tio n C u rve 900 800 700 600 500 400 300 200 100 0 0 25 50 75 100 125 150 T A (°C ) Marking Information (1) SOT89-5L 4 7 5 Y : Year: 0-9 M : M onth: A~L 293 Y M X 1 AH293 Rev. 2 2 6 of 7 www.diodes.com X : Internal code a~z : Lead Free 3 JANUARY 2007 © Diodes Incorporated AH293 LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Package Information (unit:mm ) (1) 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. AH293 Rev. 2 7 of 7 www.diodes.com JANUARY 2007 © Diodes Incorporated