ATC ATS177 Single Output Hall Effect Latch Features General Description - 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 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 Package Lead Packing Blank or A~Z : if necessary to specify P: SIP3 W: SOT23 L : Lead Free Blank: Normal Blank : Tube or Bulk A : Tape & Reel Magnetic Characteristics A or B Typical Application Circuit +12V D1 L1 R1 2K L2 U1 1 VCC OUTPUT 3 R2 Q1 NPN GND 2 ATS177 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 ATS177 Single Phase Hall Effect Latch Functional Block Diagrams Vcc 1 Regulator Hall plate 23 DO Amp 2 Vss Pin Descriptions 2 177 Top view 177 1 : Vcc 1 3 2 : Vss 3 : DO 1 2 3 Name P/I/O Pin # Vcc Vss DO P P O 1 2 3 Description Positive power supply Ground Digital output Anachip Corp. www.anachip.com.tw Rev. A6 Jun 23, 2004 2/6 ATC ATS177 Single Phase Hall Effect Latch Absolute Maximum Ratings o ( at Ta=25 C ) Characteristics Symbol Values Unit VCC VRCC B Vce Ic Ta Ts Tj 20 -20 V V 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 Electrical Characteristics Characteristic Supply Voltage Unlimited 30 25 -20~+85 -65~+150 175 400 200 Pd V mA °C °C °C mW mW (Ta=+ 25°C) Symbol Test Conditions Min Vcc — Typ Max Units 3.5 - 20 V Output Saturation Voltage Vce(sat) Vcc=14V, Ic=20mA - 300 700 mV Output Leakage Current Icex Vce=14V, Vcc=14V - <0.1 10 uA Supply Current Icc Vcc=20V, Output Open - 5 10 mA Vcc=14V, RL=820Ω, CL=20Pf - 0.3 1.5 us - 0.3 1.5 us Output Rise Time tr Output Falling Time tf Vcc=14V, RL=820Ω, CL=20pF Test Circuit 14V DO RL RL=820 Ohm CL=20 pF CL Test Circuit Anachip Corp. www.anachip.com.tw Rev. A6 Jun 23, 2004 3/6 ATC ATS177 Single Phase Hall Effect Latch Magnetic Characteristics (Ta= 25°C) (1mT=10Gauss) A grade Parameter Symbol Min. Typ. Max. Unit Operate Point Bop 5 - 70 Gauss Release Point Brp -70 - -5 Gauss Bhys - 80 - Gauss Symbol Min. Typ. Max. Unit Operate Point Bop - - 100 Gauss Release Point Brp -100 - - Gauss Bhys - 80 - Gauss Hysteresis B grade Parameter Hysteresis Output Voltage in Volts DO 12 OFF OP 10 8 6 4 2 RP ON Vsat -200 -100 0 100 200 Magnetic Flux Density in Gauss Typical Magnetic Switch Point vs. Temperuture Flux Density (B) 100 Bop 50 Brp Bhys 0 -50 -20 25 80 100 o Temperature ( C) Anachip Corp. www.anachip.com.tw Rev. A6 Jun 23, 2004 4/6 ATC ATS177 Single Phase Hall Effect Latch Marking Information (1) SOT23 (2) SIP3 (Top View) XX YM X (Top View) ID code A~Z: Non-Lead Free a~z: Lead Free ID code A~Z: Non-Lead Free a~z : Lead Free 177 YWW X J7:ATS177 Date code Y : Year M :Month (A~L) Package Information Date code Y : Year WW : Nth week (unit: mm) (1)Package Type: SIP-3L 0.51mm NOM 2.10mm 1.55mm BRANDED SURFACE 1 2 3 Sensor Location Active Area Depth Package Dimension 45º 0.38mm 0.7mm 1.57mm 1.47mm 0.41mm 0.41mm 3 1.27mm 4.17mm 4.04mm 2 1 45º 3.10mm 2.97mm Anachip Corp. www.anachip.com.tw 1.82 mm 15.50mm 13.00mm Rev. A6 Jun 23, 2004 5/6 ATC ATS177 Single Phase Hall Effect Latch (2)Package Type: SOT23-3L D 2 HE E ( Sensing point ) 0.8mm 1 3 SEE VIEW C 1.45mm e1 e θ 1(4x) 3X GAUGE PLANE A A2 0.10 C L θ 2(4x) VIEW C b(3x) Symbol A A1 A2 b C D E HE L L1 e e1 θ θ1 θ2 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 Anachip Corp. www.anachip.com.tw θ L1 A1 SEATING PLANE 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 Rev. A6 Jun 23, 2004 6/6