AH173 Internal Pull-up Hall Effect Latch For High Temperature Features General Description - Bipolar Hall effect latch sensor - 3V to 20V DC operation voltage - Built-in pull-up resistor - 25mA output sink current - Operating temperature: −40°C ~ +125°C - Package: SIP3, SOT23 AH173 is a single-digital-output Hall-effect sensor with pull-up resistor for high temperature operation. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier to amplify Hall voltage, and a comparator to provide switching hysteresis for noise rejection, and an output driver with a pull-up resistor (Rpu). An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. While the magnetic flux density (B) is larger than operate point (Bop), the OUT pin turns on (low). If B moves toward release point (Brp), the OUT pin is latched “on” state prior to B < Brp. When B < Brp, the OUT pin go into “ off ” state. Applications - Rotor position sensing - Current switch - Encoder - RPM detection Pin Descriptions Pin Assignment (Top view) Name Description 3. OUT VCC Positive power supply 2. GND GND Ground 1. VCC OUT Output stage (SIP3 package) 3. OUT GND 2. 1. VCC ( SOT23 package) Ordering Information AH173 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 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. 0.7 May 7, 2004 1/6 AH173 Internal Pull-up Hall Effect Latch For High Temperature Block Diagram VCC 1 Rpu REG. 3 OUT 2 GND AMP Functional Application Circuit IA IB M Digital Hall Effect Sensor IC Driver M: Three Phase Hall Motor Ia Ib Ic & Control Logic HA RPM sensing HB HC Hall Motor Driver 3 Phase Hall Motor Anachip Corp. www.anachip.com.tw Rev 0.7 May 7, 2004 2/6 AH173 Internal Pull-up Hall Effect Latch For High Temperature Absolute Maximum Ratings ( at Ta= 25°C ) Characteristics Symbol Values Unit VCC 20 V Vout (off) Io (sink) Top Tstg 20 V Supply voltage Output “off ” voltage Output “on” current Operating temperature range Storage temperature range SIP Power dissipation SOT23 Electrical Characteristics Characteristics Supply voltage PD 25 mA -40~+125 °C -65~+150 °C 550 mW 230 mW ( Ta= 25°C ) Symbol Conditions Min. Typ. Max. Unit Vcc 3 - 20 V - 300 400 mV Supply current Icc — VCC=12V, OUT ”ON” Io =10mA VCC=12V, OUT ”OFF” - 3.5 6 mA Internal pull-up resistor Rpu — 7 10 13 KΩ Vd Vd = Vcc-Vce - - 0.3 V Output saturation voltage Dropout voltage Vout(sat) Magnetic Characteristics (At Ta= 25°C ) (1mT = 10 Gauss) A grade Characteristics Symbol Min. Typ. Max. Unit Operate Point Bop 15 - 60 Gauss Release Point Brp -60 - -15 Gauss Hysteresis Bhy - 80 - Gauss Symbol Min. Typ. Max. Unit Operate Point Bop 5 - 80 Gauss Release Point Brp -80 - -5 Gauss Hysteresis Bhy - 80 - Gauss B grade Characteristics Anachip Corp. www.anachip.com.tw Rev 0.7 May 7, 2004 3/6 AH173 Internal Pull-up Hall Effect Latch For High Temperature Operating Characteristics S S Marking side Marking side N N ( SOT23 ) ( SIP3 ) ( Output Voltage ) Vout Vcc Vd High Bhy Low Vsat Brp 0 Bop ( Magnetic flux density ) Marking Information (1) SOT23 (Top View) XX YM X (2) SIP3 (Top View) ID code A~Z: Non-Lead Free a~z : Lead Free 173 YWW X J3 : AH173 Date code Y : Year M : Month (A~L) ID code A~Z: Non-Lead Free a~z : Lead Free Date code Y : Year WW : Nth week Anachip Corp. www.anachip.com.tw Rev 0.7 May 7, 2004 4/6 AH173 Internal Pull-up Hall Effect Latch For High Temperature Package Information (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 0.7 May 7, 2004 5/6 AH173 Internal Pull-up Hall Effect Latch For High Temperature (2) Package Type: SOT23-3L D 2 E HE ( 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 o 3 6o Nom. 1.10 2.90 1.60 2.80 0.60 1.90 0.95 5o o 5 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 o 7 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 o 3 6o Nom. 0.043 0.114 0.063 0.110 0.024 0.075 0.037 5o o 5 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 o 7 10o Rev 0.7 May 7, 2004 6/6