DRV5023-Q1_16 Datasheet, PDF (8/28 Pages) Texas Instruments – Automotive Digital-Switch Hall Effect Sensor

DRV5023-Q1
SLIS163C – DECEMBER 2014 – REVISED FEBRUARY 2016
7 Detailed Description
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7.1 Overview
The DRV5023-Q1 device is a chopper-stabilized Hall sensor with a digital output for magnetic sensing
applications. The DRV5023-Q1 device can be powered with a supply voltage between 2.7 and 38 V, and will
survive –22 V reverse-battery conditions. The DRV5023-Q1 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.
For the FA, AJ, and BI device versions, a strong south pole near the marked side of the package causes the
output to pull low, and the absence of a field makes the output high-impedance. The FI device version has a
voltage inverter on the output, where a strong south pole causes the output to be high-impedance, and the
absence of a field makes the output pull low. Hysteresis is included in between the operate point and the release
point to prevent toggling near the magnetic threshold.
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
2.7 to 38 V
V_CC
Regulated Supply
Bias
Temperature
Compensation
Hall Element
+
±
Reference
C1
OCP
Gate
Drive
OUT
R1
C2
(Optional)
GND
8
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