AH285B-WLA

AH285 Hall-Effect Smart Fan Motor Controller Features - On chip Hall sensor - Rotor-locked shutdown - Automatically restart - Frequency generator (FG) output - Buil t-in Zener protection for output driver - Operating voltage: 3.8V~20V - Output current: IO(AVE) = 500mA for SIP-5/SOT89-5 - Output current: IO(AVE) = 400mA for SOT23-5 - Package: SIP-5L, SOT23-5L, SOT89-5L General Description AH285 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. To avoid coil burning, rotor-lock shutdown detection circuit shut down the output driver if the rotor is blocked and then the automatic recovery circuit will try to restart the motor. This function repeats while the rotor is blocked. Until the blocking is removed, the motor recovers running normally. Pin Configuration 285 ( Front View ) 1 : FG 2 : Vdd 3 : DO 4 : DOB 5 : GND 123 45 Pin Descriptions Symbol FG Vdd DO DOB GND Description Frequency generation Input power Output pin Output pin Ground SIP-5L Vdd 5 Vdd 1 GND 2 DO 3 SOT89-5L 285 7 DOB 4 5 FG 285 DOB 4 1 FG 2 3 GND DO SOT23-5 Ordering Information AH285 X - X X X Wafer Body Blank or A~Z : if necessary to specify Package P: SIP-5L W: SOT23-5L Y: SOT89-5L Lead L : Lead Free Packing Blank : Bulk A : Tape & Reel (for SOT Packages Only) This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. 1.0 Sep 29, 2005 1/9 AH285 Hall-Effect Smart Fan Motor Controller Block Diagram (SIP5) Vdd 2 Lock shutdown and Automatic recovery Regulator 3 Hall Plate DO Amp. Control Logic 4 DOB 5 GND 1 FG Typical Application Circuit (SIP5) D2 Vdd (12V) R pu D1 1 2 285 Coil2 3 4 5 Coil1 FG C3 GND R1 Notes: R1, R2: typical 56 Ω C1, C2, C3: typical 2.2µ F The R, C value need to be fine tuned base on coils design. R2 C2 C1 12V DC Brush-less Fan with FG output function Anachip Corp. www.anachip.com.tw 2/9 Rev 1.0 Sep 29, 2005 AH285 Hall-Effect Smart Fan Motor Controller Absolute Maximum Ratings Characteristics Supply Voltage Output Current IO(AVE) (Ta = 25°C) Symbol Vdd SIP5/SOT89-5 SOT23-5 IO(PEAK) Power Dissipation Operating Temperature Storage Temperature Maximum Junction Temp. Thermal Resistance θjc PD Topr Tstg Tj SIP5 SOT23-5 SOT89-5 SIP5 SOT23-5 SOT89-5 Rating 24 500 400 700 550 230 800 -40 ~ 100 -55 ~ 150 150 227 543 156 Unit V mA mW °C °C °C °C/W Electrical Characteristics (Ta = 25 °C, Vdd = 12V, unless otherwise notice) Characteristics Supply Voltage Supply current Output Leakage Current Locked Protection On Locked Protection Off Output saturation voltage Symbol Vdd Idd Ioff Tlrp-on Tlrp-off Conditions Operating Operating VOUT=24V Min. 3.8 0.4 2.4 35 Typ. 2 < 0.1 0.5 3 375 625 1.25 0.5 42 Max. 20 4 10 0.6 3.6 500 900 1.67 60 Unit V mA µA Sec Sec VOUT( sat ) Rds(on) Vol Vz Output On resistance FG output Vds Output Zener-breakdown Voltage IO=300mA IO=500mA IO=300mA IO=10mA mV ohm V V Magnetic Characteristics (Ta = 25 °C, Vdd = 12V, 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 Anachip Corp. www.anachip.com.tw 3/9 Rev 1.0 Sep 29, 2005 AH285 Hall-Effect Smart Fan Motor Controller Operating Characteristics DOB DO Output Voltage in Volts RP OFF Output Voltage in Volts 12 10 8 6 4 2 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 S Marking side S Marking side Marking side N ( SOT23-5 ) N ( SIP5 ) N ( SOT89-5 ) Performance Characteristics (SIP5) Ta (°C) Pd (mW) Ta (°C) Pd (mW) P d (m W ) 600 500 400 300 200 100 0 0 25 50 75 100 125 150 T a (。 C ) 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 is s ip a tio n C u rve Anachip Corp. www.anachip.com.tw 4/9 Rev 1.0 Sep 29, 2005 AH285 Hall-Effect Smart Fan Motor Controller Performance Characteristics (SOT23-5) Ta (°C) 25 50 60 70 80 90 100 110 120 130 140 150 Pd (mW) 230 184 166 147 129 110 92 74 55 37 18 0 P d (m W ) P o w e r D is s ip a tio n C u rv e 300 200 100 0 0 25 50 75 100 125 150 T a (。 C ) Performance Characteristics (SOT89-5) Ta (°C) 25 50 60 70 75 80 85 90 95 100 Pd (mW) Ta (°C) 800 105 640 110 576 115 512 120 480 125 448 130 416 135 384 140 352 145 320 150 Pd (mW) P d (m W ) 288 256 224 192 160 128 96 64 32 0 P o w e r D is s ip a tio 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 ) Anachip Corp. www.anachip.com.tw 5/9 Rev 1.0 Sep 29, 2005 AH285 Hall-Effect Smart Fan Motor Controller Marking Information (1)SIP-5L ( Front View ) Part Number 285 X XX X x Wafer Lot ID: L & a~z is lead-free products ID Code: A ~ Z Nth week: 01~52 Year: "1" = 2001 "2" = 2002 (2)SOT23-5L (Top View) ID code A~Z: Non-Lead Free a~z: Lead Free R5:AH285 Date code Y : Year M :Month(A~L) XX YM X (3)SOT89-5L 5 4 7 285 Y M X ID code A~Z : Non-Lead Free a~z : Lead Free M : Month: A~L Y : Year: 0-9 1 2 3 Anachip Corp. www.anachip.com.tw 6/9 Rev 1.0 Sep 29, 2005 AH285 Hall-Effect Smart Fan Motor Controller Package Information (1)Package type: SIP-5L ( unit: mm / [inch] ) 5.22 ± 0.1 [0.206 ± 0.003 ] 2° ~ 3° 2-0.3C [0.079-0.012C] 2° ~ 5° 1.55 ± 0.1 [0.061 ± 0.003] 4.2 REF [0.165 REF] 2° ~ 5° 3.65 ± 0.1 [0.144 ± 0.003] 0.48 ± 0.1 [0.019 ± 0.003] 14.3 ± 0.3 [0.563 ± 0.012] 0.41 ± 0.03 [0.016 ± 0.001] 0.73 ± 0.1 [0.029 ± 0.003] 2° ~ 3° 0.95 ± 0.03 [0.037 ± 0.001] 0.38 ± 0.03 [0.015 ± 0.001] Location of Sensing Point 2.006 mm [0.079 inch] ( Top View) 1.016 mm [0.04 inch] 1 2 3 4 5 Anachip Corp. www.anachip.com.tw 7/9 Rev 1.0 Sep 29, 2005 AH285 Hall-Effect Smart Fan Motor Controller (2) SOT23-5L D HE E GAUGE PLANE L L1 θ Y X e e1 VIEW C θ1(4x) A2 A θ 2(4x) b(5x) Symbol Dimensions In Millimeters Min. 1.05 0.05 1.00 0.25 0.08 2.70 1.50 2.60 0.30 0.50 1.80 0.85 0o 3o o 6 Nom. 1.10 2.90 1.60 2.80 0.60 1.90 0.95 5o 5o o 8 1.067 0.432 Max. 1.35 0.15 1.20 0.50 0.20 3.00 1.70 3.00 0.60 0.70 2.00 1.05 10o 7o o 10 - A1 SEE VIEW C Dimensions In Inches Min. 0.041 0.002 0.039 0.010 0.003 0.106 0.059 0.102 0.012 0.020 0.071 0.033 0o 3o o 6 Nom. 0.043 0.114 0.063 0.110 0.024 0.075 0.037 5o 5o o 8 0.042 0.017 Max. 0.053 0.006 0.047 0.020 0.008 0.118 0.067 0.118 0.024 0.028 0.079 0.041 10o 7o o 10 - A A1 A2 b C D E HE L L1 e e1 θ θ1 θ2 X Y Anachip Corp. www.anachip.com.tw 8/9 C Rev 1.0 Sep 29, 2005 AH285 Hall-Effect Smart Fan Motor Controller (3) Package type: SOT89-5L A C D F E B K J F L I H G Package Sensor Location Y X Symbol A B C D E F G H I J K L X Y Dimensions In Millimeters Min. Nom. Max. 4.40 4.50 4.60 4.05 4.15 4.25 1.50 1.60 1.70 1.30 1.40 1.50 2.40 2.50 2.60 0.80 3.00 Ref. 1.50 Ref. 0.40 0.46 0.52 1.40 1.50 1.60 0.35 0.39 0.43 5o Typ. 1.90 1.65 - Dimensions In Inches Min. Nom. Max. 0.173 0.177 0.181 0.159 0.163 0.167 0.059 0.063 0.067 0.051 0.055 0.059 0.094 0.098 0.102 0.031 0.118 Ref. 0.059 Ref. 0.016 0.018 0.020 0.055 0.059 0.063 0.014 0.015 0.017 5o Typ. 0.075 0.065 - Anachip Corp. www.anachip.com.tw 9/9 Rev 1.0 Sep 29, 2005