DRV5033_15 Datasheet, PDF (14/26 Pages) Texas Instruments – DRV5033 Digital-Omnipolar-Switch Hall Effect Sensor

DRV5033
SLIS152C – MAY 2014 – REVISED MAY 2015
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Feature Description (continued)
8.3.5 Protection Circuits
The DRV5033 device is fully protected against overcurrent and reverse-supply conditions.
8.3.5.1 Overcurrent Protection (OCP)
An analog current-limit circuit limits the current through the FET. The driver current is clamped to I_OCP. During
this clamping, the r_DS(on) of the output FET is increased from the nominal value.
8.3.5.2 Load Dump Protection
The DRV5033 device operates at DC V_CC conditions up to 38 V nominally, and can additionally withstand V_CC =
40 V. No current-limiting series resistor is required for this protection.
8.3.5.3 Reverse Supply Protection
The DRV5033 device is protected in the event that the V_CC pin and the GND pin are reversed (up to –22 V).
NOTE
In a reverse supply condition, the OUT pin reverse-current must not exceed the ratings
specified in the Absolute Maximum Ratings.
FAULT
FET overload (OCP)
Load dump
Reverse supply
CONDITION
I_SINK ≥ I_OCP
38 V < V_CC < 40 V
–22 V < V_CC < 0 V
Table 1.
DEVICE
Operating
Operating
Disabled
DESCRIPTION
Output current is clamped to I_OCP
Device will operate for a transient duration
Device will survive this condition
8.4 Device Functional Modes
The DRV5033 device is active only when V_CC is between 2.5 and 38 V.
When a reverse supply condition exists, the device is inactive.
RECOVERY
I_O < I_OCP
V_CC ≤ 38 V
V_CC ≥ 2.5 V
14
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