DRV5033_15 Datasheet, PDF (8/26 Pages) Texas Instruments – DRV5033 Digital-Omnipolar-Switch Hall Effect Sensor

DRV5033
SLIS152C – MAY 2014 – REVISED MAY 2015
8 Detailed Description
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8.1 Overview
The DRV5033 device is a chopper-stabilized hall sensor with a digital omnipolar switch output for magnetic
sensing applications. The DRV5033 device can be powered with a supply voltage between 2.5 and 38 V, and will
survive –22 V reverse battery conditions continuously. Note that the DRV5033 device will not be operating when
about –22 to 2.4 V is applied to V_CC (with respect to GND). In addition, the device can withstand 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 omnipolar configuration allows the hall sensor to respond to either a south or north pole. A strong magnetic
field of either polarity will cause the output to pull low (operate point, B_OP), and a weaker magnetic field will cause
the output to release (release point, B_RP). Hysteresis is included in between the operate and release points, so
magnetic field noise will not trip the output accidentally.
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.
8.2 Functional Block Diagram
2.5 to 38 V
Regulated Supply
Bias
Temperature
Compensation
V_CC
Hall Element
+
±
Reference
C1
OCP
Gate
Drive
OUT
R1
C2
(Optional)
GND
8
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