MX887D

μPower Hall-Effect Switch Features • • • • • 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 MX887D Description 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 e3 Ordering Information Part MX887DHTTR Description TSOT-23 3L Tape & Reel (3000/Reel) Figure 1. Functional Block Diagram VSUPPLY 1 Power Management Logic Offset Cancellation Switch 3 DS-MX887D - August 10, 2009 www.clare.com Output Latch Hall Sensor Output 2 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 6 6 August 10, 2009 www.clare.com 2 MX887D 1 Specifications 1.1 Package Pinout 1.2 Pin Description 3 Pin# 1 2 3 Name VSUPPLY OUT 2.5V to 5.5V Description Open-Drain, N-Channel FET 1 2 GROUND Ground 1.3 Absolute Maximum Ratings Parameter Supply Voltage Output Voltage Magnetic Flux Density Output Current Junction Temperature Operating Ambient Temperature Storage Temperature Symbol VSUPPLY VOUT B IOUT TJ TA TSTG Min -0.5 -0.5 -40 -40 Max 6 6 Unlimited 5 150 85 150 Units VDC V G mA °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 Supply Voltage Range Output Leakage Current Output On Voltage Awake Time Period Duty Cycle Supply Current Conditions Operating VOUT=5.5V, BRPN < B < BRPS IOUT=1mA, VDD=3.0V Awake (enabled) Asleep (disabled) Average (Calculated) Notes: ISUPPLY Symbol VSUPPLY ILKG VOUT - Minimum 2.5 - Typical 100 0.1 5 Maximum 5.5 1 300 90 90 2 8 15 Units VDC μA mV μs ms % mA μA μA 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 Operating Points Due to North Pole Applied Due to South Pole Applied Release Points Due to North Pole Applied Due to South Pole Applied Hysteresis Notes: North Pole to Branded Side South Pole to Branded Side | BOPX - BRPX | BRPN BRPS 6 5 -6 G Conditions North Pole to Branded Side South Pole to Branded Side Symbol BOPN BOPS Minimum Typical Maximum Units -60 - - 60 G G BHYS 1. As used here, negative flux densities are defined as less than zero (algebraic convention); -50G