AH288-YL-13

AH288 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Features • • • • • • • • • • On chip Hall sensor Rotor-locked shutdown Automatically restart Frequency generator (FG) output Built-in Zener protection for output driver Operating voltage: 3.8V~28V Output current: IO(AVE) = 400mA Lead Free Package: SOT89-5L (Note 1) SOT89-5L: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note 2) General Description AH288 is a monolithic fan motor controller with Hall sensor’s capability. It contains two complementary open-drain transistors as motor coil drivers, automatic lock current shutdown, and recovery protections. Additional, frequency generator (FG) output is for speed detection 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. Typical Application Circuit Vdd (24V) D2 D1 R pu FG 5 4 288 1 2 3 Coil2 Coil1 D3 C1 48V GND * Rpu : typical 10 Kohm 48V Note: 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 . 24V DC Brush-less Fan with FG output function AH288 Rev. 12 DS31040 1 of 9 www.diodes.com APRIL 2010 © Diodes Incorporated AH288 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Ordering Information AH288 - Y L - 13 Package Y : SOT89-5L Lead Free L : Lead Free (Note 1) G : Green Packaging (Note 3) SOT89-5L SOT89-5L Packing 13 : Tape & Reel Device AH288-YL-13 AH288-YG-13 Notes: Package Code Y Y 13” Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13 1. AH288-YL-13 will be replaced by AH288-YG-13 2. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 3. 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. 4. Reverse taping as shown on Diodes Inc. Surface Mount (SMD) Packaging document AP02007, which can be found on our website http://www.diodes.com/datasheets/ap02007.pdf. Pin Assignments ( Top View ) Vdd 1 GND 2 DO 3 SOT89-5L 288 7 4 DOB 5 FG Pin Descriptions Pin Name Vdd GND DO DOB FG Pin No. 1 2 3 4 5 Description Input power Ground Output pin Output pin Frequency generation AH288 Rev. 12 DS31040 2 of 9 www.diodes.com APRIL 2010 © Diodes Incorporated AH288 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Block Diagram Vdd 2 Lock shutdown and Automatic recovery Regulator DO Hall Plate Amp. Control Logic DOB GND 1 FG AH288 Rev. 12 DS31040 3 of 9 www.diodes.com APRIL 2010 © Diodes Incorporated AH288 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Absolute Maximum Ratings Symbol Vdd IO PD TST TJ θJA Supply Voltage Output Current (TA = 25°C) Parameter IO(AVE) IO(PEAK) Rating 30 400 700 800 -55 ~ 150 150 156 Unit V mA mA mW °C °C °C/W Power Dissipation Storage Temperature Maximum Junction Temperature Thermal Resistance Junction-to-Case (Note 5) TA TJ Tc θ JA θ JC Notes: 5. θJA should be confirmed with what heat sink thermal resistance. If no heat sink contacting, θJA is almost the same as θJC.. Recommended Operating Conditions Symbol Vdd TA Notes: Characteristic Supply Voltage (Note 6) Operating Ambient Temperature Conditions Operating Operating Min 3.8 -40 Max 28 100 Unit V °C 6. Please watch out the current limit issue when the operation voltage is over 26.4V, because of the different efficiency in the coil. AH288 Rev. 12 DS31040 4 of 9 www.diodes.com APRIL 2010 © Diodes Incorporated AH288 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Electrical Characteristics Symbol ICC IOFF TLRP-ON TLRP-OFF VOUT(SAT) RDS(ON) VOL VZ Truth Table INH L - (TA = 25 °C, Vdd = 24V, unless otherwise specified) Parameter Supply Current Output Leakage Current Locked Protection On Locked Protection Off Output Saturation Voltage Output On Resistance FG Output Vds Output Zener-breakdown Voltage Conditions Operating VOUT = 24V Min 0.4 2.4 42 Typ. 2 < 0.1 0.46 2.76 450 680 2.25 0.3 55 Max 4 10 0.6 3.6 700 800 3.5 0.5 65 Unit mA μA Sec Sec mV ohm V V IO = 200mA IO = 300mA IO = 200mA IO = 10mA IN+ L H - CT L L H OUT1 H L off OUT2 L H off FG H L - Mode Rotating Rotating Lockup protection activated Magnetic Characteristics (TA = 25 °C, Vdd = 24V, unless otherwise specified, Note 7) (1mT=10 Gauss) Symbol Bop Brp Bhy Notes: Characteristics Operate Point Release Point Hysteresis Min 10 -60 - Typ. 30 -30 60 Max 60 -10 - Unit Gauss Gauss Gauss 7. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering. AH288 Rev. 12 DS31040 5 of 9 www.diodes.com APRIL 2010 © Diodes Incorporated AH288 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Operating Characteristics DOB Output Voltage in Volts DO RP 24 20 16 12 8 Output Voltage in Volts OFF OFF 24 20 16 12 8 OP ON 4 OP Vsat RP 4 ON Vsat Brp 0 Bop Brp 0 Bop Magnetic Flux Density in Gauss Magnetic Flux Density in Gauss S Marking side N ( SOT89-5L ) AH288 Rev. 12 DS31040 6 of 9 www.diodes.com APRIL 2010 © Diodes Incorporated AH288 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Performance Characteristics TA (°C) PD (mW) TA (°C) PD (mW) 25 800 105 288 50 640 110 256 60 576 115 224 (SOT89-5L) 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 D ( mW ) 900 800 700 600 500 400 300 200 100 0 -4 0 0 25 P ower Dissipation Curve 50 75 10 0 125 1 50 T A ( °C) Marking Information (1) SOT89-5L ( Top View ) 5 4 7 288 Y W X 1 2 3 Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : Internal code a~z : Lead Free A~Z : Green AH288 Rev. 12 DS31040 7 of 9 www.diodes.com APRIL 2010 © Diodes Incorporated AH288 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER Package Information (1) Package type: SOT89-5L (All Dimensions in mm) Sensor Location AH288 Rev. 12 DS31040 8 of 9 www.diodes.com APRIL 2010 © Diodes Incorporated AH288 HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2010, Diodes Incorporated www.diodes.com AH288 Rev. 12 DS31040 9 of 9 www.diodes.com APRIL 2010 © Diodes Incorporated