AH266 High Voltage Hall Effect Latch Features General Description - On-chip Hall plate - Operating voltage: 4V~28V - Output current: 400mA(Continuous, 25oC) - Reverse protection diode only for chip reverse power connecting (Note) - Output protection Zener breakdown Vz=62V(Typ) - Package: SIP-4L AH266 is an integrated Hall sensor with output drivers designed for electronic commutation of brush-less DC motor applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and complementary darlington open-collector drivers for sinking large current loads. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. If a magnetic flux density (B) is larger than operate point (Bop), DO turn on (low) and DOB turn off (high). The outputs state is latched prior to reach release point (Brp). if B< Brp, DO turn off and DOB turn on. AH266 is rated for operation over temperature range from -20oC to 85 oC and voltage range from 4V to 28V. The devices are available in low cost die forms or rugged 4 pin SIP packages. (Note) Protection diode only exists at power pin(1,4) output, not including pin (2,3). Application - Dual-coil Brush-less DC Motor - Dual-coil Brush-less DC Fan - Revolution Counting - Speed Measurement Pin Configuration Pin Assignment Name 4. GND 3. DOB VCC 2. DO 1. VCC Description Positive Power Supply DO Output Pin DOB Output Pin GND Ground Ordering Information AH266 X - X X X - X Packing Wafer Body Package Lead Blank or A~Z : if necessary to specify P: SIP-4L L : Lead Free Blank: Normal Blank : Tube A : Taping Magnetic Characteristics A or B 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. 0.2 Jan 19, 2005 1/6 AH266 High Voltage Hall Effect Latch Block Diagram VCC 1 DO REG. Hall Plate Amp DOB Typical Application Circuit 266 1 2 coil1 3 coil2 4 Vcc Brush-less DC Fan Note: This application circuit can’t protect reverse coil current if power is connecting reverse. Anachip Corp. www.anachip.com.tw Rev 0.2 Jan 19, 2005 2/6 AH266 High Voltage Hall Effect Latch Absolute Maximum Ratings (at Ta = 250C ) Parameter Supply voltage Output “OFF ” voltage Output “ON” current Magnetic flux density Operating temperature range Storage temperature range Power dissipation (Note 2) Thermal Resistance Symbol Rating Unit VCC Vout (off) Io (con) Io (hold) Io (peak) B Top Tstg PD θjc 28 28 400 (Note 1) 500 700 Unlimited -20~+85 -65~+150 550 227 V V mA mA mA Gauss °C °C mW °C/W Note 1: Io(con) is 150 mA at 85°C 2: See Performance Characteristic for other conditions Electrical Characteristics ( Ta = 25°C ) Characteristic Symbol Supply Voltage Output Zener Breakdown Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time Switch Time Differential Vcc Vz Vce(sat) Icex Icc tr tf ∆t Conditions － Output Turn off Vcc=24V, Ic=400mA Vce=24V, Vcc=24V Vcc=24V, Output Open Vcc=24V, RL=820Ω, CL=20pF Vcc=24V, RL=820Ω, CL=20pF Vcc=24V, RL=820Ω, CL=20pF Min Typ Max Unit 4 54 － － － － － － － 62 1.1 < 0.1 5 1.0 1.0 3.0 28 70 1.5 10 10 5 1.5 10 V V V µA mA µs µs µs Test Circuit 24V 266 Vout1(DO) RL1 Vout2(DOB) RL2 RL1=RL2=820 Ohm CL1=CL2=20 pF CL1 CL2 Anachip Corp. www.anachip.com.tw Rev 0.2 Jan 19, 2005 3/6 AH266 High Voltage Hall Effect Latch Magnetic Characteristics (Ta=+25oC) (1mT = 10 Gauss) A grade Characteristic Operate Point Release Point Hysteresis B grade Characteristic Operate Point Release Point Hysteresis Symbol Min. Typ. Max. Unit Bop Brp Bhy 10 -70 - 80 70 -10 - Gauss Gauss Gauss Symbol Min. Typ. Max. Unit Bop Brp Bhy -100 - 80 100 - Gauss Gauss Gauss Turn on Bhy DO Output Voltage in Volts Output Voltage in Volts DOB Turn off Turn off Vsat Brp Turn on Vsat Bop 0 Bhy Brp Magnetic Flux Density in Gauss 0 Bop Magnetic Flux Density in Gauss Performance Characteristics (SIP-4L) 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 Power Dissipation Curve Pd (mW ) 600 500 400 300 200 100 0 0 15 30 45 60 75 85 90 105 120 135 150 Ta (。C) Anachip Corp. www.anachip.com.tw Rev 0.2 Jan 19, 2005 4/6 AH266 High Voltage Hall Effect Latch Operation Characteristics S Marking side ( Output Voltage ) DO N ( SIP4 ) Vcc Vd High Bhy Low Vsat Brp N 0 Bop S ( Magnetic flux density ) Marking Information ( Front View ) Part Number 266 X XX X X Blank: normal L: Lead Free Package ID Code: A ~ Z Nth week: 01~52 Year: "1" = 2001 "2" = 2002 Anachip Corp. www.anachip.com.tw Rev 0.2 Jan 19, 2005 5/6 AH266 High Voltage Hall Effect Latch Package Information Active Area Depth Package Sensor Location Marking side 1.971mm 1.046mm 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 3 -5 0.38mm +/-0.03mm o 3.65mm +/-0.1mm o 5 -7 o o 3 -5 0.41mm +/-0.03mm 3.81mm +/-0.03mm 0.46mm +/-0.03mm 5.22mm +/-0.1mm 4.20mm +/-0.1mm 0.30mm +/-0.1mm o 0.2mm Max. 1.42mm+/-0.1mm Anachip Corp. www.anachip.com.tw 1.27mm +/-0.03mm Rev 0.2 Jan 19, 2005 6/6