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| ATC Single Output Hall Effect Latch Features - 3.5V to 20V DC operation voltage - Temperature compensation - Wide operating voltage range - Open-Collector pre-driver - 25mA maximum sinking output current. - Reverse polarity protection - Package: SIP3, SOT23 ATS177 General Description ATS177 is an integrated Hall effect latched sensor 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 open-collector output. 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 larger than threshold Bop, DO is turned on(low). The output state is held until a magnetic flux density reversal falls below Brp causing DO to be turned off (high). Applications - Brush-less DC Motor - Brush-less DC Fan - Revolution counting - Speed measurement Ordering Information ATS177 X - X X X - X Wafer Body Blank or A~Z : if necessary to specify Package P: SIP3 W: SOT23 Lead L : Lead Free Blank: Normal Packing Blank : Tube or Bulk A : Tape & Reel Magnetic Characteristics A or B Typical Application Circuit +12V D1 R1 2K U1 1 VCC OUTPUT GND 2 ATS177 3 Q1 NPN L1 L2 R2 3K + C1 0.47uF Q2 NPN + C2 0.47uF 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.A6 Jun 23, 2004 1/6 ATC Single Phase Hall Effect Latch Functional Block Diagrams ATS177 Vcc 1 Regulator Hall plate 3 2 DO Amp 2 Vss Pin Descriptions 177 2 Top view 177 1 : Vcc 1 3 2 : Vss 3 : DO 1 2 3 Name Vcc Vss DO P/I/O P P O Pin # 1 2 3 Description Positive power supply Ground Digital output Anachip Corp. www.anachip.com.tw 2/6 Rev. A6 Jun 23, 2004 ATC Single Phase Hall Effect Latch Absolute Maximum Ratings Characteristics Supply voltage Reverse Vcc Polarity Voltage Magnetic flux density Output OFF Voltage Output "on" current Continuous Operating temperature range Storage temperature range Maximum Junction Temp. SIP-3L Package Power Dissipation SOT23-3L ( at Ta=25 C ) Symbol VCC VRCC B Vce Ic Ta Ts Tj Pd (Ta=+ 25C) Test Conditions -- Vce=14V, Vcc=14V Vcc=20V, Output Open Vcc=14V, RL=820, CL=20Pf Vcc=14V, RL=820, CL=20pF Min 3.5 Typ 300 <0.1 5 0.3 0.3 Max 20 700 10 10 1.5 1.5 Units V mV uA mA us us Values 20 -20 Unlimited 30 25 -20~+85 -65~+150 175 400 200 Unit V V V mA C C C mW mW o ATS177 Electrical Characteristics Characteristic Supply Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time Symbol Vcc Icex Icc tr tf Output Saturation Voltage Vce(sat) Vcc=14V, Ic=20mA Test Circuit 14V DO RL RL=820 Ohm CL=20 pF CL Test Circuit Anachip Corp. www.anachip.com.tw 3/6 Rev. A6 Jun 23, 2004 ATC Single Phase Hall Effect Latch Magnetic Characteristics A grade Parameter Operate Point Release Point Hysteresis B grade Parameter Operate Point Release Point Hysteresis Symbol Bop Brp Bhys Min. -100 Typ. 80 Max. 100 Unit Gauss Gauss Gauss Symbol Bop Brp Bhys Min. 5 -70 Typ. 80 Max. 70 -5 Unit Gauss Gauss Gauss (Ta= 25C) (1mT=10Gauss) ATS177 DO Output Voltage in Volts OFF 12 10 8 6 4 OP RP Vsat -200 -100 0 2 ON 100 200 Magnetic Flux Density in Gauss Typical Magnetic Switch Point vs. Temperuture 100 50 0 Bop Brp Bhys Flux Density (B) -50 -20 25 80 o 100 Temperature ( C) Anachip Corp. www.anachip.com.tw 4/6 Rev. A6 Jun 23, 2004 ATC Single Phase Hall Effect Latch Marking Information (1) SOT23 (Top View) ID code A~Z: Non-Lead Free a~z: Lead Free J7:ATS177 Date code Y : Year M :Month (A~L) ATS177 (2) SIP3 (Top View) 177 YWW X ID code A~Z: Non-Lead Free a~z : Lead Free Date code Y : Year WW : Nth week XX YM X Package Information (1)Package Type: SIP-3L (unit: mm) 0.51mm NOM 2.10mm 1.55mm BRANDED SURFACE 1 2 3 Active Area Depth Package Dimension 45 Sensor Location 0.38mm 0.7mm 1.57mm 1.47mm 0.41mm 0.41mm 3 4.17mm 4.04mm 1.27mm 2 1 1.82 mm 45 3.10mm 2.97mm 15.50mm 13.00mm Anachip Corp. www.anachip.com.tw 5/6 Rev. A6 Jun 23, 2004 ATC Single Phase Hall Effect Latch (2)Package Type: SOT23-3L D ATS177 2 ( Sensing point ) E 0.8mm HE 1 1.45mm 3 e1 e 1(4x) 0.10 C 3X SEATING PLANE 2(4x) b(3x) SEE VIEW C A2 GAUGE PLANE L A A1 L1 VIEW C Symbol A A1 A2 b C D E HE L L1 e e1 1 2 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 6o Nom. 1.10 2.90 1.60 2.80 0.60 1.90 0.95 5o 5o 8o Max. 1.35 0.15 1.20 0.50 0.20 3.00 1.70 3.00 0.55 0.70 2.00 1.05 10o 7o 10o 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 6o Nom. 0.043 0.114 0.063 0.110 0.024 0.075 0.037 5o 5o 8o Max. 0.053 0.006 0.047 0.020 0.008 0.118 0.067 0.118 0.022 0.028 0.079 0.041 10o 7o 10o Anachip Corp. www.anachip.com.tw 6/6 Rev. A6 Jun 23, 2004 |
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