DRV5023_16 Datasheet, PDF (9/28 Pages) Texas Instruments – Digital-Switch Hall Effect Sensor

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7 Detailed Description
DRV5023
SLIS151E – MAY 2014 – REVISED FEBRUARY 2016
7.1 Overview
The DRV5023 device is a chopper-stabilized Hall sensor with a digital output for magnetic sensing applications.
The DRV5023 device can be powered with a supply voltage between 2.5 and 38 V, and will survive –22 V
reverse-battery conditions. The DRV5023 device does not operate when –22 to 2.4 V is applied to the V_CC pin
(with respect to GND pin). In addition, the device can withstand supply voltages up to 40 V for transient
durations.
The field polarity is defined as follows: a south pole near the marked side of the package is a positive magnetic
field. A north pole near the marked side of the package is a negative magnetic field.
The output state is dependent on the magnetic field perpendicular to the package. A strong south pole near the
marked side of the package causes the output to pull low (operate point, BOP), and a weak south pole causes
the output to release (release point, BRP). Hysteresis is included in between the operate point and the release
point therefore magnetic-field noise does not accidentally trip the output.
An external pullup resistor is required on the OUT pin. The OUT pin can be pulled up to V_CC, or to a different
voltage supply. This allows for easier interfacing with controller circuits.
7.2 Functional Block Diagram
2.5 to 38 V
VCC
Regulated Supply
Bias
Temperature
Compensation
Hall Element
+
±
Reference
C1
OCP
Gate
Drive
OUT
R1
C2
(Optional)
GND
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