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| ATC Single Phase Hall Effect Latch Features - 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 General Description 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 Blank or A~Z : if necessary to specify Package P: SIP-4L S: SOP-7L Lead L : Lead Free Blank: Normal Packing Blank : Tube or Bulk A : Tape & Reel Magnetic Characteristics A or B Application Circuit FG 1 2 3 4 1 2 7 6 coil coil 3 Vcc 4 5 Vcc (SIP-4L) Single-coil brush-less DC Fan (SOP 7) 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 Single Phase Hall Effect Latch Pin Configuration (1)SIP-4L ATS477 Front View 477 12 Name Vcc DOB DO Vss P/I/O P O O P Pin # 1 2 3 4 3 4 Description Positive Power Supply Output Pin Output Pin Ground (2)SOP-7L Top view 1 2 3 4 477 7 6 5 Name Vcc DO DOB FG Vss P/I/O P O O O P Pin # 3,4 7 5 1 6 Description Positive Power Supply Output Pin Output Pin Frequency Generator Ground Anachip Corp. www.anachip.com.tw 2/7 Rev. A5 Apr 15, 2004 ATC Single Phase Hall Effect Latch Block Diagrams (1). SIP-4L 1 1 OUTPUT(DOB) REG. 2 ATS477 Hall Sensor Amp 1 CTL CKT OUTPUT(DO) 3 4 VSS (2). SOP-7L 4 3 OUTPUT(DOB) REG. 5 Hall Sensor Amp CTL CKT 4 OUTPUT(DO) 7 6 VSS 1 FG Anachip Corp. www.anachip.com.tw 3/7 Rev. A5 Apr 15, 2004 ATC Single Phase Hall Effect Latch Absolute Maximum Ratings Characteristics Supply voltage Magnetic flux density Output "on" current Operating temperature range Storage temperature range Continuous Hold Peak (Start Up) ( at Ta=25oC ) Symbol VCC Values 20 Unlimited 250 300 600 -20~+85 -65~+150 550 800 mA C C mW mW (Note 1) Unit V ATS477 B Ic Ta Ts 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 Supply Voltage Symbol ( Ta=+25C, Vcc=3.5V to 20V ) Test Conditions Min Typ 500 0.3 18 1.0 0.3 1.0 Max 20 800 Vcc 0.7 30 5.0 1.5 5.0 Unit V mV V V mA s s s 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=820, CL=20pF Output Falling Time tf Vcc=14V, RL=820, CL=20pF Switch Time Differential t Vcc=14V, RL=820, CL=20pF Magnetic Characteristics (Ta=+25C) (1mT=10Gauss) A grade Characteristic Operate Point Release Point Hysteresis B grade Characteristic Operate Point Release Point Hysteresis Symbol Bop Brp Bhy Symbol Bop Brp Bhy Min. 5 -70 Min. -100 Typ. 60 Typ. 60 Max. 70 -5 Max. 100 Unit Gauss Gauss Gauss Unit Gauss Gauss Gauss Anachip Corp. www.anachip.com.tw 4/7 Rev. A5 Apr 15, 2004 ATC Single Phase Hall Effect Latch DOB Output Voltage in Volts 12 10 8 6 4 ON 2 OP Vsat 100 200 -200 -100 0 Magnetic Flux Density in Gauss ATS477 DO 12 10 8 6 4 RP Vsat 100 200 -200 -100 0 Magnetic Flux Density in Gauss 2 ON HYSTERCSIS CHARACTERISTICS Output Voltage in Volts RP OFF OFF OP Operation Characteristics DO ( Output Voltage ) Vcc High S Marking side S Marking side Vd Bhy Low N ( SOP-7 ) N ( SIP4 ) Vsat 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 5/7 Rev. A5 Apr 15, 2004 ATC Single Phase Hall Effect Latch Package Information (1) SIP-4L ATS477 Active Area Depth Marking side Package Sensor Location 1.50mm 1.35mm 0.7mm 1 2 3 4 Package Dimension 5 -7 1.55mm +/-0.1mm 1.03mm +/-0.1 0.30mm +/-0.1mm 3 -5 o o o o 14.25mm +/-1.25mm 0.38mm +/-0.03mm 3.65mm +/-0.1mm 0.46mm +/-0.03mm 0.38mm +/-0.03mm 3.81mm +/-0.03mm 5.22mm +/-0.1mm 4.20mm +/-0.1mm 5 -7 o o 3 -5 o o 477 0.2mm Max. 1.42mm+/-0.1mm 1.27mm +/-0.03mm Anachip Corp. www.anachip.com.tw 6/7 Rev. A5 Apr 15, 2004 ATC Single Phase Hall Effect Latch (2) SOP-7L C2 C3 ATS477 A X Y B1 B2 E C1 C e D F Symbol A B1 B2 C C1 C2 C3 D E e F X Y 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 Max. 6.19 3.99 3.94 4.94 1.77 0.48 1.37 0.25 0.88 1.55 - Dimensions In Inches Min. 0.228 0.151 0.149 0.189 0.062 0.013 0.046 0.007 0.019 0.053 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 - Anachip Corp. www.anachip.com.tw 7/7 Rev. A5 Apr 15, 2004 |
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