MX887D μPower Hall-Effect Switch Features Description μPower Operation (15 μW typical at 25°C) Omnipolar (switches with N or S pole) 2.5V to 5.5V Operation Simple Digital Open-Drain Output Ultra Low Offset Canceling Amplifiers Provide Sensitive, Accurate, Stable Switching Points and Immunity to Mechanical Stress • Solid State Reliability • Operating Temperature Range: -40°C to +85°C • RoHS Compliant TSOT-23 3-Lead Package The MX887D integrated Hall-Effect switch targets the requirements of low-power portable devices with battery operating voltages from 2.5V to 5.5V. On-chip power management circuitry reduces the effective average current to just 5μA at VSUPPLY = 3VDC . • • • • • The switch output will turn “on” when either a north or south magnetic pole is applied. The absence of a magnetic field will set the switch into the high-impedance “off” state. Emulating the behavior of a traditional reed switch, together with the advantages of high integration and solid state reliability, makes the MX887D an ideal replacement in low-power portable device applications. Applications • • • • • Handheld Portable Devices White Goods Automotive - Body Systems Security Systems High Reliability Reed Switch Replacement Pb RoHS 2002/95/EC Ordering Information e3 Part Description MX887DHTTR TSOT-23 3L Tape & Reel (3000/Reel) Figure 1. Functional Block Diagram VSUPPLY 1 Offset Cancellation Output 2 Output Latch Hall Sensor Switch Power Management Logic 3 DS-MX887D - August 10, 2009 www.clare.com 1 MX887D 1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Package Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 Magnetic Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 3 3 3 4 4 2. Circuit Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3. Manufacturing Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1 Mechanical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3 Washing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . August 10, 2009 www.clare.com 5 5 6 6 2 MX887D 1 Specifications 1.1 Package Pinout 1.2 Pin Description 3 1 Pin# Name 1 VSUPPLY 2 OUT 3 2 Description 2.5V to 5.5V Open-Drain, N-Channel FET GROUND Ground 1.3 Absolute Maximum Ratings Parameter Symbol Min Max Units Supply Voltage VSUPPLY -0.5 6 VDC Output Voltage VOUT -0.5 6 V B - Unlimited G IOUT - 5 mA TJ - 150 TA -40 85 TSTG -40 150 Magnetic Flux Density Output Current Junction Temperature Operating Ambient Temperature Storage Temperature °C Absolute maximum electrical ratings are at 25°C. Absolute maximum ratings are stress ratings. Stresses in excess of these ratings can cause permanent damage to the device. Functional operation of the device at conditions beyond those indicated in the operational sections of this data sheet is not implied. 1.4 Electrical Characteristics Over operating voltage and temperature range unless otherwise specified. Parameter Conditions Symbol Minimum Typical Maximum Units Operating VSUPPLY 2.5 - 5.5 VDC VOUT=5.5V, BRPN < B < BRPS ILKG - - 1 μA IOUT=1mA, VDD=3.0V VOUT - 100 300 mV Awake Time - - - - 90 μs Period - - - - 90 ms - - - 0.1 - % - - 2 mA - - 8 μA - 5 15 μA Supply Voltage Range Output Leakage Current Output On Voltage Duty Cycle Supply Current Awake (enabled) Asleep (disabled) ISUPPLY Average (Calculated) Notes: 1. BOPX = operating point (output turns ON); BRPX = release point (output turns OFF). 2. Typical data is at 25°C and VSUPPLY = 3V. August 10, 2009 www.clare.com 3 MX887D 1.5 ESD Rating ESD Rating (Human Body Model) 2000V 1.6 Magnetic Characteristics Over operating voltage and temperature range unless otherwise specified. Parameter Conditions Symbol Minimum Typical Maximum Due to North Pole Applied North Pole to Branded Side BOPN -60 - - Due to South Pole Applied South Pole to Branded Side BOPS - - 60 Due to North Pole Applied North Pole to Branded Side BRPN - - -6 Due to South Pole Applied South Pole to Branded Side BRPS 6 - - | BOPX - BRPX | BHYS - 5 - Units Operating Points G Release Points Hysteresis Notes: G G 1. As used here, negative flux densities are defined as less than zero (algebraic convention); -50G<+10G. 2. BOPX = operating point (output turns ON); BRPX = release point (output turns OFF). 3. Typical data is at 25°C and VSUPPLY = 3V. 2 Circuit Description The MX887D μPower Hall-Effect Switch consists of a Hall element, small signal amplifier, latch, and N-channel open-drain output. Offset cancellation circuitry rejects errors in signal stages and the influence of mechanical stress on the Hall element. This technique, together with a precision threshold generator and comparator, produces highly accurate magnetic switch points. The Hall element is activated for a small fraction of an operating cycle, then latched in that sample state for the remainder of the period. By using this technique, very low power consumption is achieved. 4 www.clare.com August 10, 2009 MX887D 3 Manufacturing Information 3.1 Mechanical Dimensions 3.1.1 TSOT23 3-Lead Package Recommended PCB Land Pattern 0º / 8º 2.80 / 3.00 (0.110 / 0.118) 0.10 MIN (0.004 MIN) 3 2.60 / 3.00 (0.102 / 0.118) 1 0.00 / 0.10 (0.000 / 0.004) 1.05 (0.041) 0.10 / 0.25 (0.004 / 0.010) 0.60 REF (0.0236 REF) 0.25 BSC (0.0098 BSC) 5º NOM 7º NOM 0.95 BSC (0.037 BSC) 0.60 (0.024) 0.95 (0.037) GAUGE PLANE 0.70 / 0.80 (0.028 / 0.031) 2.70 (0.106) 2 0.35 / 0.51 (0.014 / 0.020) 0.75 / 0.90 (0.030 / 0.035) 0.37 / 0.47 (0.015 / 0.019) 1.50 / 1.70 (0.059 / 0.067) Dimensions mm MIN / mm MAX (inches MIN / inches MAX) 1.90 BSC (0.0748 BSC) Notes: (Unless otherwise specified) 1. Dimension “D” does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, and gate burrs shall not exceed 0.10mm (0.004 inches) per side. 2. Dimension “E” does not include inter-lead flash or protrusions. Inter-lead flash and protrusions shall not exceed 0.15mm (0.006 inches) per side. 3. Package top may be smaller than package bottom. Dimensions “D” and “E1” are determined at the outermost extreme of the plastic body excluding mold flash, tie bar burrs, gate burrs, and interlead flash, but including any mismatch between top and bottom of the plastic body. 3.1.2 Tape & Reel Packaging 178 DIA. (7.01 DIA.) 0.25 ± 0.05 (0.001 ± 0.002) ø1.5, +0.1, -0 (ø0.059, +0.004, -0) P=4.0 ± 0.1 (0.157 ± 0.004) 2.0 ± 0.05 (0.079 ± 0.002) 3.5 ± 0.05 (0.138 ± 0.002) 1.75 ± 0.1 (0.069 ± 0.004) Top Cover Tape Thickness 0.066 MAX. (0.003 MAX.) BO=3.2 ± 0.1 (0.126 ± 0.004) K0=1.1 ± 0.1 (0.043 ± 0.004) Embossed Carrier Embossment August 10, 2009 P=4.0 ± 0.1 (0.157 ± 0.004) AO=3.2 ± 0.1 (0.126 ± 0.004) ø1.1 ± 0.1 (0.043 ± 0.004) W=8.0 ± 0.2 (0.315 ± 0.008) Dimensions mm (inches) NOTE: Tape dimensions not shown comply with JEDEC Standard EIA-481-2 www.clare.com 5 MX887D 3.2 Soldering 3.3 Washing For proper assembly, the component must be processed in accordance with the current revision of IPC/JEDEC standard J-STD-020. Failure to follow the recommended guidelines may cause permanent damage to the device resulting in impaired performance and/or a reduced lifetime expectancy. Clare does not recommend ultrasonic cleaning or the use of chlorinated hydrocarbons. Pb RoHS 2002/95/EC e3 For additional information please visit our website at: www.clare.com Clare, Inc. makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication and reserves the right to make changes to specifications and product descriptions at any time without notice. Neither circuit patent licenses nor indemnity are expressed or implied. Except as set forth in Clare’s Standard Terms and Conditions of Sale, Clare, Inc. assumes no liability whatsoever, and disclaims any express or implied warranty, relating to its products including, but not limited to, the implied warranty of merchantability, fitness for a particular purpose, or infringement of any intellectual property right. The products described in this document are not designed, intended, authorized or warranted for use as components in systems intended for surgical implant into the body, or in other applications intended to support or sustain life, or where malfunction of Clare’s product may result in direct physical harm, injury, or death to a person or severe property or environmental damage. Clare, Inc. reserves the right to discontinue or make changes to its products at any time without notice. Specification: DS-MX887D-August 10, 2009 ©Copyright 2009, Clare, Inc. All rights reserved. Printed in USA. 8/10/09 6 www.clare.com August 10, 2009