ATS177 SINGLE OUTPUT HALL EFFECT LATCH Description Pin Assignments ATS177 is an integrated Hall-Effect latch 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 provides a temperature compensated supply voltage for internal circuits and allows a wide operating supply range. When the magnetic flux density (B) is larger than operate point (Bop), output is switched on (DO pin is pulled low). The output state is held on until a magnetic flux density reversal falls below Brp. When B is less than Brp, the output is switched off. (Top View) 3. DO 2. GND 1. Vcc SIP-3L Applications • • • • Brush-less DC Motor Brush-less DC Fan Revolution counting Speed measurement The ATS177 is available in SIP-3L package. Features • • • • • • • • • Bipolar Hall-Effect latch sensor 3.5V to 20V DC operating voltage Temperature compensation Open-collector pre-driver 25mA maximum output sink current Built-in reverse polarity protection Operating temperature: -40°C to +125°C SIP-3L package Green Molding Compound (No Br, Sb) (Note 1) Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. Typical Application Circuit +12V D1 L1 R1 2K L2 U1 R2 1 VCC OUTPUT GND 2 ATS177 3 Q1 NPN 3K + C1 0.47uF Q2 NPN + C2 0.47uF Brush-less DC Fan ATS177 Document number: DS31055 Rev. 6 - 2 1 of 9 www.diodes.com July 2010 © Diodes Incorporated ATS177 SINGLE OUTPUT HALL EFFECT LATCH Pin Descriptions Pin name P/I/O Pin # Vcc GND DO P P O 1 2 3 Description Positive power supply Ground Digital output Functional Block Diagram Vcc 1 Regulator Hall plate 23 DO Amp 2 GND Absolute Maximum Ratings (TA = 25°C) Symbol VCC VRCC B VCE PD IC TJ(MAX) TS Characteristics Supply Voltage Reverse VCC Polarity Voltage Magnetic Flux Density Output OFF Voltage Package Power Dissipation Output “ON” Current Maximum Junction Temperature Storage Temperature Range SIP-3L Continuous Rating 20 -20 Unlimited 30 550 25 150 -65~+150 Unit V V V mW mA °C °C Recommended Operating Conditions Symbol VCC TA Notes: Characteristic Supply Voltage Operating Ambient Temperature (Note 2) Conditions Min Max Unit Operating 3.5 20 V Operating -20 85 °C 2. Shall not exceed PD and Safety Operation Area. ATS177 Document number: DS31055 Rev. 6 - 2 2 of 9 www.diodes.com July 2010 © Diodes Incorporated ATS177 SINGLE OUTPUT HALL EFFECT LATCH Electrical Characteristics (TA = 25°C) Symbol VCE (sat) Icex Icc tr tf Characteristic Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Falling Time Test Conditions VCC = 14V, Ic = 20mA VCE = 14V, VCC = 14V VCC = 20V, Output Open VCC = 14V, RL = 820Ω, CL = 20pF VCC = 14V, RL = 820Ω, CL = 20pF Min - Typ. 300 <0.1 5 0.3 0.3 Max 700 10 10 1.5 1.5 Unit mV uA mA us us Test Circuit 14V DO RL RL=820 Ohm CL=20 pF CL Test Circuit ATS177 Document number: DS31055 Rev. 6 - 2 3 of 9 www.diodes.com July 2010 © Diodes Incorporated ATS177 SINGLE OUTPUT HALL EFFECT LATCH Magnetic Characteristics (TA = 25°C, Note 3) (1mT=10 Gauss) A grade Symbol Bops(south pole to brand side) Brps(south pole to brand side) Bhy(|Bopx|-|Brpx|) Parameter Min Typ. Max Unit Operation Point Release Point Hysteresis 5 -70 - 80 70 -5 - Gauss Gauss Gauss Parameter Operation Point Release Point Hysteresis Min -100 - Typ. 80 Max 100 - Unit Gauss Gauss Gauss B grade Symbol Bops(south pole to brand side) Brps(south pole to brand side) Bhy(|Bopx|-|Brpx|) Notes: 3. Magnetic characteristics may vary with supply voltage, operating temperature and after soldering. 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) ATS177 Document number: DS31055 Rev. 6 - 2 4 of 9 www.diodes.com July 2010 © Diodes Incorporated ATS177 SINGLE OUTPUT HALL EFFECT LATCH Performance Characteristics (1) SIP-3L TA (°C) PD (mW) TA (°C) PD (mW) 25 550 105 198 50 440 110 176 P D (mW) 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 Power Dissipation Curve 6 00 5 00 4 00 3 00 2 00 1 00 0 0 -40 ATS177 Document number: DS31055 Rev. 6 - 2 25 50 75 5 of 9 www.diodes.com 85 100 1 25 15 0 T A (oC) July 2010 © Diodes Incorporated ATS177 SINGLE OUTPUT HALL EFFECT LATCH Ordering Information ATS177 - X X - X - X Package P : SIP-3L Device Magnetic Characteristics Packing Lead Free L : Lead Free G : Green (Note 4) Tube/Bulk Package Packaging Part Code (Note 5, 6) Quantity Number Suffix A or B A : Ammo Box (Note 7) B : Bulk (Note 8) 7 : Tape & Reel 7” Tape and Reel Ammo Box Quantity Part Number Suffix Quantity Part Number Suffix Magnetic Characteristics ATS177-PL-A-A P SIP-3L NA NA NA NA 4000/Box -A A ATS177-PL-A-B P SIP-3L NA NA NA NA 4000/Box -A B ATS177-PG-A-A P SIP-3L NA NA NA NA 4000/Box -A A ATS177-PG-A-B P SIP-3L NA NA NA NA 4000/Box -A B ATS177-PL-B-A P SIP-3L 1000 -B NA NA NA NA A ATS177-PL-B-B P SIP-3L 1000 -B NA NA NA NA B ATS177-PG-B-A P SIP-3L 1000 -B NA NA NA NA A ATS177-PG-B-B P SIP-3L 1000 -B NA NA NA NA B Notes: 4. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 5. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. 6. Reverse taping as shown on Diodes Inc. Surface Mount (SMD) Packaging document AP02007, which can be found on our website http://www.diodes.com/datasheets/ap02007.pdf. 7. Ammo Box is for SIP-3L Spread Lead. 8. Bulk is for SIP-3L Straight Lead. Marking Information (1) SIP-3L (Top View) Part Number 177 Y WW X ATS177 Document number: DS31055 Rev. 6 - 2 Y : Year : 0~9 WW : Week : 01~52, "52" represents 52 and 53 week X : Internal Code : A~Z : Green a~z : Lead Free 6 of 9 www.diodes.com July 2010 © Diodes Incorporated ATS177 SINGLE OUTPUT HALL EFFECT LATCH Package Outline Dimensions (All Dimensions in mm) (1) Package Type: SIP-3L for Bulk pack 0.51mm NOM 2.00 +/0.10mm 1.15 +/0.10mm BRANDED SURFACE 1 Active Area Depth 2 3 Sensor Location Package Dimension ATS177 Document number: DS31055 Rev. 6 - 2 7 of 9 www.diodes.com July 2010 © Diodes Incorporated ATS177 SINGLE OUTPUT HALL EFFECT LATCH Package Outline Dimensions (Continued) (2) Package Type: SIP-3L for Ammo pack ATS177 Document number: DS31055 Rev. 6 - 2 8 of 9 www.diodes.com July 2010 © Diodes Incorporated ATS177 SINGLE OUTPUT HALL EFFECT LATCH IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). 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