DRV8256EPWPR datasheet(22/47 Pages) TI2

tên linh kiện	DRV8256EPWPR

Giải thích chi tiết về linh kiện	DRV8256E/P H-Bridge Motor Driver With Integrated Current Sense and Smart Tune Technology

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7.3.5 Linear Voltage Regulators

A linear voltage regulator is integrated in the device. The DVDD regulator can be used to provide a reference

voltage. DVDD can supply a maximum of 2 mA load. For proper operation, bypass the DVDD pin to GND using

a ceramic capacitor.

The DVDD output is nominally 5-V. When the DVDD LDO current load exceeds 2 mA, the output voltage drops

significantly.

Figure 7-10. Linear Voltage Regulator Block Diagram

If a digital input must be tied permanently high (that is, DECAY or TOFF), tying the input to the DVDD pin instead

of an external regulator is preferred. This method saves power when the VM pin is not applied or in sleep mode:

the DVDD regulator is disabled and current does not flow through the input pulldown resistors. For reference,

logic level inputs have a typical pulldown of 200 kΩ.

The nSLEEP pin cannot be tied to DVDD, else the device will never exit sleep mode.

DRV8256E, DRV8256P

SLOSE50A – APRIL 2020 – REVISED JUNE 2021

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