AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER General Description Features • • • • • • • On Chip Hall Sensor Rotor-Locked Shutdown Automatically Restart Built-in Zener Protection for Output Driver Operating Voltage: 3.8V~20 V Output Current: IO(AVE) = 500mA for SIP-4/SOT89-5 Lead Free Finish/RoHS Compliant for Lead Free products (Note 1) Lead Free Packages: SIP-4L and SOT89-5L • AH284 is a monolithic fan motor controller with Hall sensor’s capability. It contains two complementary open-drain 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. 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 AH284 Note: 1. - X XX Package Lead P: SIP-4L Y: SOT89-5L L : Lead Free Packing -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. Device Lead-free Lead-free AH284-P AH284-Y Package Packaging Code (Note 2) P Y SIP-4L SOT89-5 Tube/Bulk Part Number Quantity Suffix 1000 NA -B NA 7” Tape and Reel Part Number Quantity Suffix NA 2500/Tape & Reel NA -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. AH284 Rev. 3 1 of 9 www.diodes.com JANUARY 2007 © Diodes Incorporated AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER Pin Assignment Front View 284 Vdd 1 1 : Vdd 2 : DO GND 2 5 NC 284 3 : DOB 1 2 3 DO 3 4 : GND 4 SIP-4L 74 DOB SOT89-5L Pin Descriptions Name Vdd DO DOB GND NC Description Input Power Output Pin Output Pin Ground Not Connected Block Diagram V dd 1 Lock Shutdown and Automatic Recovery Regulator Hall Plate Amp. 2 DO 3 DOB Control Logic 4 GND AH284 Rev. 3 2 of 9 www.diodes.com JANUARY 2007 © Diodes Incorporated AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER Typical Application Circuit (SIP-4L) 12V D2 Vdd D1 284 1 2 3 L2 L1 4 GND C3 DOB DO Notes: R1, R2: typical 56 Ω C1, C2, C3: typical 2.2µ F R1 R2 The R, C value need to be fine tuned based on coils design. C1 C2 12V Brush-Less DC Fan Absolute Maximum Ratings (TA = 25°C) Characteristics Symbol Supply Voltage IO (PEAK) Power Dissipation SIP4 SOT89-5 PD Operating Temperature Storage Temperature Maximum Junction Temp. Topr Tstg Tj SIP4 SOT89-5 θ JA Thermal Resistance Unit 24 500 700 550 800 -40 ~ 100 -55 ~ 150 150 227 156 Vdd SIP4/SOT89-5 IO (AVE) Output Current Rating V mA mW °C °C °C °C/W TA TJ Tc θ JA θ JC Note: θ JA should be confirmed with what heat sink thermal resistance. If no heat sink contacting, AH284 Rev. 3 3 of 9 www.diodes.com θ JA is almost the same as θ JC . JANUARY 2007 © Diodes Incorporated AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER Electrical Characteristics Characteristics (TA = 25 °C, Vdd =12V, unless otherwise specified) Symbol Conditions Min. Typ. Max. Unit Supply Voltage Vdd Operating 3.8 - 20 V Supply Current Output Leakage Current Locked Protection On Locked Protection Off Idd Ioff Operating VOUT = 24V 0.4 2.4 35 2.0 < 0.1 0.5 3 375 625 1.25 42 4.0 10 0.6 3.6 500 900 1.67 60 mA µA Sec Sec Tlrp-on Tlrp-off Output Saturation Voltage Output On Resistance Output Zener-Breakdown Voltage Truth Table INH L - IN+ L H - IO = 300mA IO = 500mA IO = 300mA VOUT (SAT ) CT L L H Rds(on) Vz OUT1 H L off OUT2 L H off mV ohm V Mode Rotating Rotating Lockup protection activated Magnetic Characteristics (TA = 25 °C, Vdd = 12V, unless otherwise specified) (1mT = 10 Gauss) Characteristics Symbol Min. Typ. Max. Unit Operation Point Release Point Hysteresis Bop Brp Bhy 10 -60 -- 30 -30 60 60 -10 -- Gauss Gauss Gauss AH284 Rev. 3 4 of 9 www.diodes.com JANUARY 2007 © Diodes Incorporated AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER Operating Characteristics DO 12 RP Output Voltage in Volts Output Voltage in Volts DOB OFF 10 8 6 4 2 ON OP 0 8 6 4 Brp Magnetic Flux Density in Gauss ON 0 Bop Magnetic Flux Density in Gauss S S Marking side Marking side N AH284 Rev. 3 2 RP Bop ( SIP4 ) OP 10 VSAT VSAT Brp 12 OFF N ( SOT89-5 ) 5 of 9 www.diodes.com JANUARY 2007 © Diodes Incorporated AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER Performance Characteristics TA (°C) PD (mW) TA (°C) PD (mW) 25 550 105 198 (SIP-4L) 50 440 110 176 60 396 115 154 70 352 120 132 80 308 125 110 85 286 130 88 90 264 135 66 95 242 140 44 100 220 150 0 P o w e r D issip a tio n C u rve P D (m W ) 600 500 400 300 200 100 0 0 25 50 75 100 125 150 T A (°C ) Performance Characteristics TA (°C) PD (mW) TA (°C) PD (mW) 25 800 105 288 50 640 110 256 P D (m W ) (SOT89-5L) 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 o w e r D is s ip a t io n C u r v e 900 800 700 600 500 400 300 200 100 0 0 25 50 75 100 125 150 T A (°C ) AH284 Rev. 3 6 of 9 www.diodes.com JANUARY 2007 © Diodes Incorporated AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER Marking Information (1) SIP-4L ( Front View ) Part Number Internal code a~z: Lead Free 284 Y WW X x Y :Year: "1" = 2001 "2" = 2002 WW : Nth week 01~52 X : Internal Code : A~Z (2) SOT89-5L (Top View) 4 7 5 Y : Year: 0-9 M : Month: A~L 284 Y M X 1 AH284 Rev. 3 2 X : Internal code a~z : Lead Free 3 7 of 9 www.diodes.com JANUARY 2007 © Diodes Incorporated AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER Package Information (unit: mm) (1) SIP-4L Active Area Depth Package Sensor Location Marking side 1.97mm 1.04mm 1 0.7mm 2 3 4 Package Dimension AH284 Rev. 3 8 of 9 www.diodes.com JANUARY 2007 © Diodes Incorporated AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER Package Information (Continued) (2) 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. AH284 Rev. 3 9 of 9 www.diodes.com JANUARY 2007 © Diodes Incorporated