ATC ATS477 Single Phase Hall Effect Latch Features General Description - On-chip Hall sensor - Bi-direction H type output drivers for single coil - Internal bandgap regulator allows temperature compensated operations and a wide operating voltage range - High output sinking capability up to 250mA - Operating voltage: 3.5V~20V - Low output switching current noise - Build-in shunt Zener protection for output driver - SOP-7L provide FG output pin - Package: SIP-4L and SOP-7L ATS477 that integrates Hall sensor with output drivers is designed for electrical commutation of brush-less DC motor application. The device includes on-chip Hall voltage generator for magnetic sensing, the error amplifier that amplifies the Hall voltage, a comparator that is to provide switching hysteresis for noise rejection, the bi-direction drivers for sinking and driving large current load, and the frequency generator (FG) that provides a signal proportional to rotation speed. Internal bandgap regulator is used to provide temperature compensated bias for internal circuits and allows a wide operating supply voltage range. Built-in protection circuit and output shunt Zener diodes were applied for protecting output drivers during operating. If a magnetic flux density is larger than threshold Bop, DO is turned to sink and DOB is turned to drive. The output state is held until a magnetic flux density reversal falls below Brp causing DO to be turned to drive and DOB turned to sink. ATS477 is rated for operation over-temperature range from -20 oC to 85 oC and voltage range from 3.5V to 20V. The devices are available in low cost die forms or rugged SIP-4L and power SOP-7L packages. Applications - Single-coil Brush-less DC Fan - Single-coil Brush-less DC Motor Ordering Information ATS477 X - X X X - X Wafer Body Package Lead Packing Magnetic Characteristics Blank or A~Z : if necessary to specify P: SIP-4L S: SOP-7L L : Lead Free Blank: Normal Blank : Tube or Bulk A : Tape & Reel A or B Application Circuit FG 1 2 3 4 1 7 2 6 coil 3 coil Vcc 4 5 Vcc (SIP-4L) (SOP 7) Single-coil brush-less DC Fan 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. A5 Apr 15, 2004 1/7 ATC ATS477 Single Phase Hall Effect Latch Pin Configuration (1)SIP-4L Front View 477 1 2 3 4 Name P/I/O Pin # Description Vcc DOB DO Vss P O O P 1 2 3 4 Positive Power Supply Output Pin Output Pin Ground (2)SOP-7L Top view 1 2 7 477 3 4 6 5 Name P/I/O Pin # Description Vcc DO DOB FG Vss P O O O P 3,4 7 5 1 6 Positive Power Supply Output Pin Output Pin Frequency Generator Ground Anachip Corp. www.anachip.com.tw Rev. A5 Apr 15, 2004 2/7 ATC ATS477 Single Phase Hall Effect Latch Block Diagrams (1). SIP-4L 1 1 OUTPUT(DOB) 2 REG. Hall Sensor 1 CTL Amp CKT OUTPUT(DO) 3 4 VSS (2). SOP-7L 4 3 OUTPUT(DOB) 5 REG. Hall Sensor CTL 4 Amp CKT OUTPUT(DO) 7 Anachip Corp. www.anachip.com.tw 6 VSS 1 FG Rev. A5 Apr 15, 2004 3/7 ATC ATS477 Single Phase Hall Effect Latch Absolute Maximum Ratings ( at Ta=25oC ) Characteristics Symbol Values Unit VCC 20 V Supply voltage Magnetic flux density Output “on” current B Continuous Hold Peak (Start Up) Unlimited Ic Ta Ts Operating temperature range Storage temperature range SIP-4L Package Power PD Dissipation SOP-7L (Note 1) Ground pin must connect to large area copper on PCB as possible. Electrical Characteristics Characteristic Symbol 250 300 600 -20~+85 -65~+150 550 800 mA °C °C mW mW (Note 1) ( Ta=+25°C, Vcc=3.5V to 20V ) Test Conditions Min Supply Voltage － Vcc 3.5 － Vcc=14V, Ic=200mA Output Saturation Vce(sink) Voltage Vce(drive) Vcc=14V, Ic=200mA Vcc-1.5 FG Saturation Voltage Vce Vcc=14V, IFG=20mA － Supply Current Icc Vcc=20V, Output Open － Output Rise Time tr Vcc=14V, RL=820Ω, CL=20pF － Output Falling Time tf Vcc=14V, RL=820Ω, CL=20pF － Switch Time Differential ∆t Vcc=14V, RL=820Ω, CL=20pF Typ Max Unit － 500 － 0.3 18 1.0 0.3 1.0 20 800 Vcc 0.7 30 5.0 1.5 5.0 V mV V V mA µs µs µs Magnetic Characteristics (Ta=+25°C) (1mT=10Gauss) A grade Characteristic Operate Point Release Point Hysteresis B grade Characteristic Operate Point Release Point Hysteresis Symbol Bop Brp Bhy Min. 5 -70 - Typ. 60 Max. 70 -5 - Unit Gauss Gauss Gauss Symbol Bop Brp Bhy Min. -100 - Typ. 60 Max. 100 - Unit Gauss Gauss Gauss Anachip Corp. www.anachip.com.tw Rev. A5 Apr 15, 2004 4/7 ATC ATS477 Single Phase Hall Effect Latch Output Voltage in Volts RP 12 Output Voltage in Volts HYSTERCSIS CHARACTERISTICS DOB OFF 10 8 6 4 ON 2 OP Vsat DO 12 OFF OP 10 8 6 4 2 RP ON Vsat 100 200 -200 -100 0 Magnetic Flux Density in Gauss 100 200 -200 -100 0 Magnetic Flux Density in Gauss Operation Characteristics S S Marking side Marking side N N ( SOP-7 ) ( Output Voltage ) DO Vcc Vd High Bhy Low Vsat ( SIP4 ) Brp 0 Bop ( Magnetic flux density ) Marking Information ( Top View ) Part Number 477 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. A5 Apr 15, 2004 5/7 ATC ATS477 Single Phase Hall Effect Latch Package Information (1) SIP-4L Active Area Depth Package Sensor Location Marking side 1.50mm 1.35mm 1 0.7mm 2 3 4 Package Dimension o 5 -7 o 14.25mm +/-1.25mm 1.55mm +/-0.1mm o o 3 -5 0.46mm +/-0.03mm 477 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 0.38mm +/-0.03mm 3.81mm +/-0.03mm 1.03mm +/-0.1 o 0.2mm Max. 1.42mm+/-0.1mm Anachip Corp. www.anachip.com.tw 1.27mm +/-0.03mm Rev. A5 Apr 15, 2004 6/7 ATC ATS477 Single Phase Hall Effect Latch (2) SOP-7L C2 C3 B1 B2 A Y X E C1 C e D β F Symbol A B1 B2 C C1 C2 C3 D E e F X Y β Dimensions In Millimeters Min. 5.79 3.83 3.78 4.80 1.57 0.32 1.17 0.19 0.48 1.35 - Nom. 5.99 3.91 3.86 4.87 1.67 0.40 1.27 0.22 1.04REF 0.68 1.45 2.90 2.00 7o Dimensions In Inches Max. 6.19 3.99 3.94 4.94 1.77 0.48 1.37 0.25 Min. 0.228 0.151 0.149 0.189 0.062 0.013 0.046 0.007 0.88 1.55 - 0.019 0.053 - Anachip Corp. www.anachip.com.tw Nom. 0.236 0.154 0.152 0.192 0.066 0.016 0.050 0.009 0.041REF 0.027 0.057 0.114 0.079 7o Max. 0.244 0.157 0.155 0.194 0.070 0.019 0.054 0.010 0.035 0.061 - Rev. A5 Apr 15, 2004 7/7