AH284-PL-13

AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER 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 General Description 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 - XXX Package P: SIP-4L Y: SOT89-5L Lead L : Lead Free Packing -B : -7/-13: Bulk Taping Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device Lead-free 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 Lead-free AH284-P AH284-Y 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 284 Front View 1 : Vdd 2 : DO 3 : DOB Vdd 1 GND 2 DO 3 SOT89-5L 284 5 NC 12 3 4 4 : GND 7 DOB 4 SIP-4L 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 2 H all Plate DO Amp. Control Logic 3 DOB 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 Vdd D2 D1 284 L2 L1 1 2 3 4 GND C3 DOB DO Notes: R1, R2: typical 56 Ω C1, C2, C3: typical 2.2µ F The R, C value need to be fine tuned based on coils design. R1 C1 R2 C2 12V Brush-Less DC Fan Absolute Maximum Ratings Characteristics Supply Voltage Output Current Power Dissipation Operating Temperature Storage Temperature Maximum Junction Temp. Thermal Resistance (TA = 25°C) Symbol IO (AVE) PD Vdd SIP4/SOT89-5 IO (PEAK) SIP4 SOT89-5 Topr Tstg Tj Rating 24 500 700 550 800 -40 ~ 100 -55 ~ 150 150 227 156 Tc Unit V mA mW °C °C °C °C/W θ JA TA TJ SIP4 SOT89-5 θ JA θ JC Note: θ JA should be confirmed with what heat sink thermal resistance. If no heat sink contacting, θ JA is almost the same as θ JC . AH284 Rev. 3 3 of 9 www.diodes.com JANUARY 2007 © Diodes Incorporated AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER Electrical Characteristics Characteristics Supply Voltage Supply Current Output Leakage Current Locked Protection On Locked Protection Off Output Saturation Voltage Output On Resistance Output Zener-Breakdown Voltage Truth Table INH L - (TA = 25 °C, Vdd =12V, unless otherwise specified) Symbol Vdd Idd Ioff Tlrp-on Tlrp-off Conditions Operating Operating VOUT = 24V Min. 3.8 0.4 2.4 35 Typ. 2.0 < 0.1 0.5 3 375 625 1.25 42 Max. 20 4.0 10 0.6 3.6 500 900 1.67 60 Unit V mA µA Sec Sec mV ohm V VOUT ( SAT ) Rds(on) Vz IO = 300mA IO = 500mA IO = 300mA IN+ L H - CT L L H OUT1 H L off OUT2 L H off Mode Rotating Rotating Lockup protection activated Magnetic Characteristics (TA = 25 °C, Vdd = 12V, unless otherwise specified) (1mT = 10 Gauss) Characteristics Operation Point Release Point Hysteresis Symbol Bop Brp Bhy Min. 10 -60 -Typ. 30 -30 60 Max. 60 -10 -Unit 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 DOB DO Output Voltage in Volts Output Voltage in Volts RP 12 10 8 6 4 2 OFF OFF 12 10 8 6 4 2 OP ON OP VSAT RP ON VSAT Brp 0 Bop Brp 0 Bop Magnetic Flux Density in Gauss Magnetic Flux Density in Gauss S Marking side S Marking side N ( SIP4 ) N ( SOT89-5 ) AH284 Rev. 3 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) P D (m W ) 600 500 400 300 200 100 0 0 25 (SIP-4L) 25 550 105 198 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 50 75 100 125 150 T A ( °C ) Performance Characteristics TA (°C) PD (mW) TA (°C) PD (mW) P D (m W ) 900 800 700 600 500 400 300 200 100 0 0 25 (SOT89-5L) 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 o w e r D is s ip a t io n C u r v e 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 284 Y WW X x Internal code a~z: Lead Free Y :Year: "1" = 2001 "2" = 2002 WW : Nth week 01~52 X : Internal Code : A~Z (2) SOT89-5L (Top View) 5 4 7 Y : Year: 0-9 M : Month: A~L 284 Y M X X : Internal code a~z : Lead Free 1 2 3 AH284 Rev. 3 7 of 9 www.diodes.com JANUARY 2007 © Diodes Incorporated AH284 HALL-EFFECT SMART FAN MOTOR CONTROLLER Package Information (1) SIP-4L (unit: mm) A ctive Area Depth Marking side Package Sensor Location 1.97mm 1.04mm 0.7mm 1 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 (2) SOT89-5L (Continued) 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