AH287 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER General Description Features • • • • • • • AH287 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. On chip Hall sensor Rotor-locked shutdown Automatically restart Built-in Zener protection for output driver Operating voltage: 3.8V~28V Output current: IO(AVE) = 400mA Lead Free Finish/RoHS Compliant for Lead Free products (Note 1) Lead Free Packages: SIP-4L and SOT89-5L • 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 AH287 - X X X Note: 1. Lead-Free P: SIP-4L Y: SOT89-5L L : Lead Free Packing -B : -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 Package AH287-P AH287-Y Package Code P Y Packaging (Note 2) SIP-4L SOT89-5L Quantity 1000 NA Tube/Bulk Part Number Suffix -B NA 7” Tape and Reel Quantity Part Number Suffix NA NA 2500/Tape & Reel -13 Lead-free 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. AH287 Rev. 4 1 of 10 www.diodes.com JANUARY 2007 © Diodes Incorporated AH287 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Pin Descriptions Pin Assignment Front View 287 Name Vdd DO DOB GND NC 1 : Vdd 2 : DO 3 : DOB Description Input power Output pin Output pin Ground Not connected 4 : GND 1 2 3 4 SIP-4L Vdd 1 5 NC 287 GND 2 DO 3 74 DOB SOT89-5L Block Diagram (SIP-4L) Vdd 1 Lock shutdown and Automatic recovery Regulator Hall Plate Amp. 2 DO 3 DOB Control Logic 4 GND AH287 Rev. 4 2 of 10 www.diodes.com JANUARY 2007 © Diodes Incorporated AH287 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Typical Application Circuit (SIP-4L) D2 24V L2 287 L1 D1 1 2 3 4 GND DOB D3 C1 48V DO 48V 24V brush-less DC fan Note: 3. The optional Capacitor C1 and Diode D3 are for power stabilization. C1 is recommended to be E-Cap., luF/25V; D3 is recommended to be Zener Diode, VZ =27V. Which C1and D3 value need to be fine tuned to optimize design for different coils and power suppliers. Absolute Maximum Ratings (TA = 25°C) Characteristics Supply Voltage Symbol Vdd SIP-4L/SOT89-5L IO(PEAK) SIP-4L SOT89-5L Topr Tstg Tj SIP-4L SOT89-5L IO(AVE) Output Current Power Dissipation PD Operating Temperature Storage Temperature Maximum Junction Temp. θ JA Thermal Resistance Rating 30 400 700 550 800 -40 ~ 100 -55 ~ 150 150 227 156 Unit V mA mW °C °C °C °C/W °C/W TA TJ Tc θ JA θ JC Note: 4. θ JA AH287 Rev. 4 should be confirmed with what heat sink thermal resistance. If no heat sink contacting, 3 of 10 www.diodes.com θ JA is almost the same as θ JC . JANUARY 2007 © Diodes Incorporated AH287 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Electrical Characteristics Characteristics (TA = 25 °C, Vdd =24V, unless otherwise specified) Symbol Conditions Min. Typ. Max. Unit Vdd Operating 3.8 - 28* V Supply current Output Leakage Current Locked Protection On Locked Protection Off Icc Ioff Tlrp-on Tlrp-off Operating VOUT=24V VOUT( sat ) Output On resistance Output Zener-breakdown Voltage Rds(on) Vz 2.0 < 0.1 0.46 2.76 450 680 2.25 55 4.0 10 0.6 3.6 700 800 3.5 65 mA µA Sec Sec Output saturation voltage 0.4 2.4 42 Supply Voltage IO=200mA IO=300mA IO=200mA mV ohm V *Note: Please watch out the current limit issue when the operation voltage is over 26.4V, because of the different efficiency in the coil. Truth Table INH L - IN+ L H - CT L L H Magnetic Characteristics OUT1 H L off OUT2 L H off Mode Rotating Rotating Lockup protection activated (TA = 25 °C, Vdd = 24V, unless otherwise specified) (1mT=10 Gauss) Characteristics Symbol Min. Typ. Max. Unit Operate Point Release Point Hysteresis Bop Brp Bhy 10 -60 -- 30 -30 60 60 -10 -- Gauss Gauss Gauss AH287 Rev. 4 4 of 10 www.diodes.com JANUARY 2007 © Diodes Incorporated AH287 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Operating Characteristics DO 24 RP OFF 20 16 12 8 4 ON OP Output Voltage in Volts Output Voltage in Volts DOB Vsat Brp 0 OP 20 16 12 8 4 RP ON Vsat Bop Brp Magnetic Flux Density in Gauss 0 Bop Magnetic Flux Density in Gauss S S Marking side Marking side AH287 Rev. 4 24 OFF N N ( SIP4 ) ( SOT89-5 ) 5 of 10 www.diodes.com JANUARY 2007 © Diodes Incorporated AH287 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Performance Characteristics 25 550 105 198 TA (°C) PD (mW) TA (°C) PD (mW) (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 Power Dissipation Curve P D (mW ) 600 500 400 300 200 100 0 0 15 30 45 60 Performance Characteristics 75 90 105 100 120 135 150 T A (。C) (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 ) AH287 Rev. 4 6 of 10 www.diodes.com JANUARY 2007 © Diodes Incorporated AH287 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Marking Information (1) SIP-4L ( Front View ) Part Number 287 L : Lead Free Package Y WW X x Y :Year: "1" = 2001 "2" = 2002 WW : Nth week 01~52 X : Internal Code: A~Z (2) SOT89-5L 4 7 5 Y : Year: 0-9 M : Month: A~L 287 Y M X 1 AH287 Rev. 4 2 X : Internal code a~z : Lead Free 3 7 of 10 www.diodes.com JANUARY 2007 © Diodes Incorporated AH287 HIGH VOLTAGE 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 AH287 Rev. 4 8 of 10 www.diodes.com JANUARY 2007 © Diodes Incorporated AH287 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Package Information (Continued) (2) SOT89-5L Sensor Location AH287 Rev. 4 9 of 10 www.diodes.com JANUARY 2007 © Diodes Incorporated AH287 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER 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. AH287 Rev. 4 10 of 10 www.diodes.com JANUARY 2007 © Diodes Incorporated