AH284 Hall-Effect Smart Fan Motor Controller Features General Description - 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 - Output current: IO(AVE) = 400mA for SOT23-5 - Package: SIP-4L, SOT23-5L, 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. 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 rotor is blocked. Until the blocking is removed, the motor recovers running normally. Pin Assignment Pin Descriptions Name VCC DO DOB GND NC Front View 284 1 : VCC 2 : DO Description Input power Output pin Output pin Ground Not connected 3 : DOB 1 2 3 4 4 : GND SIP-4L DOB 4 VCC 5 VCC 1 GND 2 5 NC 284 284 DO 3 74 DOB SOT89-5L 1 NC 2 3 GND DO SOT23-5 Ordering Information AH284 X - X X X Wafer Body Blank or A~Z : if necessary to specify Package Lead Packing P: SIP-4L W:SOT23-5L Y: SOT89-5L L : Lead Free Blank: Normal Blank : Tube or Bulk A : Tape & Reel 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. 0.5 Jan 17, 2005 1/9 AH284 Hall-Effect Smart Fan Motor Controller Block Diagram (SIP4) VCC 1 Lock shutdown and Automatic recovery Regulator Hall Plate 2 DO 3 DOB Control Logic Amp. 4 GND Typical Application Circuit (SIP4) 12V D2 VCC 284 D1 1 2 L2 L1 R1 R2 C1 C2 4 3 GND C3 DOB DO Notes: R1, R2: typical 56 Ω C1, C2, C3: typical 2.2μF The R, C value need to be fine tuned base on coils design. 12V brush-less DC fan Anachip Corp. www.anachip.com.tw Rev 0.5 Jan 17, 2005 2/9 AH284 Hall-Effect Smart Fan Motor Controller Absolute Maximum Ratings (Ta = 25°C) Characteristics Symbol Supply Voltage Output Current Rating VCC SIP4/SOT89-5 SOT23-5 IO(AVE) IO(PEAK) Power Dissipation SIP4 SOT23-5 SOT89-5 Topr Tstg Tj SIP4 SOT23-5 SOT89-5 PD Operating Temperature Storage Temperature Maximum Junction Temp. Thermal Resistance θjc Unit 24 500 400 700 550 230 800 -40 ~ 100 -55 ~ 150 150 227 543 156 V mA mW °C °C °C °C/W Electrical Characteristics (Ta = 25 °C, VCC =12V, unless otherwise specified) Characteristics Symbol Conditions Min. Typ. Max. Unit Supply Voltage Supply current Output Leakage Current Locked Protection On Locked Protection Off Vcc Icc Ioff Tlrp-on Tlrp-off Operating Operating VOUT=24V VOUT( sat ) Output On resistance Output Zener-breakdown Voltage Rds(on) Vz 2.0 < 0.1 0.5 3 375 625 1.25 42 20 4.0 10 0.6 3.6 500 900 1.67 60 V mA µA Sec Sec Output saturation voltage 3.8 0.4 2.4 35 IO=300mA IO=500mA IO=300mA mV ohm V Magnetic Characteristics (Ta = 25 °C, VCC = 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 Rev 0.5 Jan 17, 2005 3/9 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 Vsat Brp 0 12 OFF 8 6 4 2 RP ON Vsat Bop Brp Magnetic Flux Density in Gauss S OP 10 0 Bop Magnetic Flux Density in Gauss S S Marking side Marking side Marking side N N N ( SOT23-5 ) ( SIP4 ) ( SOT89-5 ) Performance Characteristics (SIP4) 25 550 105 198 Ta (°C) Pd (mW) Ta (°C) Pd (mW) 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 P d (m W ) 600 500 400 300 200 100 0 0 25 50 75 100 125 150 T a (。 C ) Anachip Corp. www.anachip.com.tw Rev 0.5 Jan 17, 2005 4/9 AH284 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 o w e r D is s ip a tio n C u rv e P d (m W ) 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) 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 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 Rev 0.5 Jan 17, 2005 5/9 AH284 Hall-Effect Smart Fan Motor Controller Marking Information (1)SIP-4L ( Top View ) 284 X XX X X Part Number Blank : normal L : Lead Free Package ID Code 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 XX YM X R4:AH284 Date code Y : Year M :Month(A~L) (3)SOT89-5L 4 7 5 ID code A~Z : Non-Lead Free a~z : Lead Free 284 Y M X 1 2 M : Month: A~L Y : Year: 0-9 3 Anachip Corp. www.anachip.com.tw Rev 0.5 Jan 17, 2005 6/9 AH284 Hall-Effect Smart Fan Motor Controller Package Information (1)SIP-4L Active Area Depth Package Sensor Location Marking side 1.97mm 1.04mm 1 0.7mm 2 3 4 Package Dimension o 5 -7 o 14.25mm +/-1.25mm 1.55mm +/-0.1mm 1.03mm +/-0.1 o o 3 -5 0.41mm +/-0.03mm 3.81mm +/-0.03mm 0.46mm +/-0.03mm 284 5.22mm +/-0.1mm 4.20mm +/-0.1mm o 0.38mm +/-0.03mm o 3.65mm +/-0.1mm 0.30mm +/-0.1mm 5 -7 o 3 -5 o 0.2mm Max. 1.42mm+/-0.1mm Anachip Corp. www.anachip.com.tw 1.27mm +/-0.03mm Rev 0.5 Jan 17, 2005 7/9 AH284 Hall-Effect Smart Fan Motor Controller (2) SOT23-5L D e1 θ 1(4x) 4 5 E1 E A 0.10 C 5x A2 Seating Plane Y A1 1 2 X θ 2(4x) 3 e b With Plating b1 C C1 Gauge Plane 0.25 mm θ Base Metal L b Symbol A A1 A2 b b1 c c1 D E E1 L L1 e e1 θ θ1 θ2 X Y L1 Dimensions In Millimeters Min. 1.05 0.05 1.00 0.25 0.25 0.08 0.08 2.70 2.60 1.50 0.35 0o 3o 6o - Nom. 1.20 0.10 1.10 0.40 0.11 2.85 2.80 1.60 0.45 0.60 Ref. 0.95 Bsc. 1.90 Bsc. 5o 5o 8o 1.067 0.432 Dimensions In Inches Max. 1.35 0.15 1.20 0.55 0.45 0.20 0.15 3.00 3.00 1.70 0.55 Min. 0.041 0.002 0.039 0.010 0.010 0.003 0.003 0.106 0.102 0.059 0.014 10o 7o 10o - 0o 3o 6o - Anachip Corp. www.anachip.com.tw Nom. 0.047 0.004 0.043 0.016 0.004 0.112 0.110 0.063 0.018 0.024 Ref. 0.037 Bsc. 0.075 Bsc. 5o 5o 8o 0.042 0.017 Max. 0.053 0.006 0.047 0.022 0.018 0.008 0.006 0.118 0.118 0.067 0.022 10o 7o 10o - Rev 0.5 Jan 17, 2005 8/9 AH284 Hall-Effect Smart Fan Motor Controller (3) SOT89-5L A C D F B E 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 - Anachip Corp. www.anachip.com.tw 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 - Rev 0.5 Jan 17, 2005 9/9