DRV5032DUDBZT

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1. Describe

The DRV5032DUDBZT device is an ultra-low power digital switching Hall effect sensor designed for the most compact and battery sensitive systems. The device offers a variety of magnetic thresholds, sample rates, output drivers, and packages to suit a variety of applications. When the applied magnetic flux density exceeds the BOP threshold, the device outputs a low voltage. The output remains low until the flux density falls below BRP, then the output drives a high voltage or becomes high impedance, depending on the device version. By integrating an internal oscillator, the device samples the magnetic field and updates the output at a rate of 20 Hz or 5 Hz for lowest current consumption. Omnipolar and unipolar magnetic responses are available. The device operates over a VCC range of 1.65 V to 5.5 V and is available in standard SOT-23, TO-92 and small X2SON packages.

2. Feature

    1. Industry-leading ultra-low power consumption

        – 5Hz version: 0.54µA, 1.8V

        – 20Hz version: 1.6µA, 3V

    2. 1.65-V to 5.5-V operating VCC range

    3. Magnetic Threshold Options (Max BOP):

        – 3.9 mT, highest sensitivity

        – 4.8 mT, high sensitivity

        – 9.5 mT, medium sensitivity

        – 63 mT, minimum sensitivity

    4. Omnipolar and unipolar options

    5. 20-Hz and 5-Hz sample rate options

    6. Open-drain and push-pull output options

    7. SOT-23, X2SON and TO-92 package options

    8. –40°C to +85°C operating temperature range

3. Application

    1. Battery key position sensing

    2. Meter tamper detection

    3. Cell phone, laptop or tablet case sensing

    4. Electronic locks, smoke detectors, appliances

    5. Medical equipment, IoT systems

    6. Valve or solenoid valve position detection

    7. Non-contact diagnostics or activation

4. Pin configuration

5. Pin Description

6. Output type tradeoff

Push-pull outputs allow for the lowest system power consumption because there is no current leakage path when the output is driven high or low. An open-drain output involves a leakage path through an external pull-up resistor when the output is driven low. The open-drain outputs of multiple devices can be connected together to form a logical AND. In this setup, if any sensor is driven low, the voltage on the shared node goes low. This can allow a single GPIO to measure the sensor array.