AH337 Single Phase Hall Effect Switch Features General Description - 4.2V to 28V DC operation voltage - Temperature compensation - Wide operating voltage range - Open drain pre-driver - 25mA maximum sinking output current. - Package: SIP3, SOT23 AH337 is an switched Hall-Effect IC which is for contactless switching applications. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier that amplifies the Hall voltage, a schmitt trigger to provide switching hysteresis for noise rejection, and an open-collector output. The bandgap regulator allows a wide operating voltage 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 - VCD/DVD loader, CD/DVD ROM - Cover detector - Speed measurement - Home appliances - Home safety Pin Assignment 337 Pin Descriptions 2 (Top view) 337 Name P/I/O Pin # Description VCC GND OUT P P O 1 2 3 Positive Power Supply Ground Output Pin 1 : VCC 1 3 (SOT23 package) 2 : GND 3 : OUT 1 2 3 (SIP package) Ordering Information AH337 X - X X X Wafer Body Package Lead Packing Blank or A~Z : if necessary to specify P: SIP-3L W: SOT23-3L L : Lead Free Blank: Normal Blank : Tube or Bulk A : Tape & Reel 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.0.0 Jan 31, 2005 1/7 AH337 Single Phase Hall Effect Switch Typical Application Circuit 4.2V ~28V RL VCC OUT AH337 Digital Output GND Functional Block Diagrams VCC 1 Regulator Hall plate 23 OUT 2 GND Amp Anachip Corp. www.anachip.com.tw Rev. 0.0 Jan 31, 2005 2/7 AH337 Single Phase Hall Effect Switch Absolute Maximum Ratings ( at Ta=25oC ) Characteristics Supply 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 Symbol Supply Voltage Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time Vcc VDS(sat) Ioff Icc tr tf Symbol VCC B VDS Ic Ta Ts Tj Values 30 Unlimited 30 25 -40~+125 -65~+150 175 550 230 Pd Unit V V mA C C C mW mW (Ta=+ 25C, Vcc=12V) Test Conditions Min Typ Max Units -- Iout=10mA, B > Bop B < Brp Output Open RL=820, CL=20Pf RL=820, CL=20pF 4.2* - 300 <0.1 2 0.1 0.1 28 400 10 4 1 1 V mV uA mA us us *Note: The output of IC will be switched after the supply voltage is over 4.2V, but the magnetic characteristics won't be normal until the supply is over 4.5V. Test Circuit 12V OUT RL RL=820 Ohm CL=20 pF CL Test Circuit Anachip Corp. www.anachip.com.tw Rev. 0.0 Jan 31, 2005 3/7 AH337 Single Phase Hall Effect Switch Magnetic Characteristics (Ta=25C, Vcc=4.5V to 28V) (1mT=10Gauss) Parameter Operate Point Release Point Hysteresis Symbol Bop Brp Bhys Min. 90 30 - Typ. 120 60 60 Max. 150 90 - Unit Gauss Gauss Gauss S ( Output Voltage ) Output S Marking side Marking side N N ( SOT23 ) ( SIP3 ) Vcc ( off-state ) Bhy Turn off Turn on ( on-state ) Vsat Vsat 0 B rp B op ( Magnetic flux density B ) Performance Characteristics (SIP3) 25 550 105 198 Ta (C) Pd (mW) Ta (C) Pd (mW) 50 440 110 176 60 396 115 154 70 352 120 132 80 308 125 110 85 286 130 88 90 264 135 66 95 242 140 44 100 220 150 0 P o w e r D is s ip a tio n C u rv e P d (m W ) 600 500 400 300 200 100 0 0 25 50 75 100 125 150 T a ( C ) Anachip Corp. www.anachip.com.tw Rev. 0.0 Jan 31, 2005 4/7 AH337 Single Phase Hall Effect Switch Performance Characteristics (SOT23-3) Ta (C) 25 50 60 70 80 90 100 110 120 125 130 140 150 Pd (mW) 230 184 166 147 129 110 92 74 55 46 37 18 0 P d (m W ) P o w e r D is s ip a tio n C u rv e 300 200 100 0 0 25 50 75 100 125 150 T a ( C ) Marking Information (1) SIP3 (2) SOT23 (Top View) 337 YWW X (Top View) ID Code: A~Z: Non-Lead Free a~z : Lead Free XX YM X Date code Y : Year WW : Nth week Anachip Corp. www.anachip.com.tw ID code A~Z: Non-Lead Free a~z: Lead Free P1:AH337 Date code Y : Year M :Month(A~L) Rev. 0.0 Jan 31, 2005 5/7 AH337 Single Phase Hall Effect Switch Package Information (unit: mm) (1) Package Type: SIP-3L 0.51mm NOM 2.00mm 1.15mm BRANDED SURFACE 1 2 3 Sensor Location Active Area Depth Package Dimension 45 0.38mm 0.7mm 1.57mm 1.47mm 0.41mm 0.41mm 3 1.27mm 4.17mm 4.04mm 2 1 45 3.10mm 2.97mm Anachip Corp. www.anachip.com.tw 1.82 mm 15.50mm 13.00mm Rev. 0.0 Jan 31, 2005 6/7 AH337 Single Phase Hall Effect Switch (2) Package Type: SOT23-3L D 2 HE E M ( Sensing point ) 0.8mm 1 3 SEE VIEW C 1.45mm e1 e 1(4x) 3X GAUGE PLANE A A2 0.10 C L SEATING PLANE A1 2(4x) VIEW C b(3x) Symbol A A1 A2 b C D E HE L L1 M 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 0.73 1.80 0.85 o 0 3o 6o Nom. 1.10 2.90 1.60 2.80 0.60 0.78 1.90 0.95 o 5 5o 8o Max. 1.35 0.15 1.20 0.50 0.20 3.00 1.70 3.00 0.55 0.70 0.83 2.00 1.05 o 10 o 7 10o Anachip Corp. www.anachip.com.tw L1 Dimensions In Inches Min. 0.041 0.002 0.039 0.010 0.003 0.106 0.059 0.102 0.012 0.020 0.029 0.071 0.033 o 0 3o 6o Nom. 0.043 0.114 0.063 0.110 0.024 0.031 0.075 0.037 o 5 5o 8o Max. 0.053 0.006 0.047 0.020 0.008 0.118 0.067 0.118 0.022 0.028 0.033 0.079 0.041 o 10 o 7 10o Rev. 0.0 Jan 31, 2005 7/7