If the device is powered on with the magnetic flux density BRP < B < BOP, then the device output is indeterminate

and can either be Hi-Z or pulled low. During the power-up sequence, the output is held Hi-Z until ton has elapsed.

At the end of ton, a pulse is given on the OUT pin to indicate that ton has elapsed. After ton, if the magnetic flux

density changes such that BOP < B, the output is released. Case 3 (Figure 6-6) and Case 4 (Figure 6-7) show

examples of this behavior.

VCC

BOP

BRP

t (s)

B (mT)

t (s)

t (s)

OUT

Valid Output

td

ton

Figure 6-6. Case 3: Power On When BRP < B < BOP, Followed by B > BOP

VCC

BOP

BRP

t (s)

B (mT)

t (s)

t (s)

OUT

Valid Output

td

ton

Figure 6-7. Case 4: Power On When BRP < B < BOP, Followed by B < BRP

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DRV5013

SLIS150N – MARCH 2014 – REVISED JULY 2025

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