JAJSHI4 May 2019 DRV8340-Q1
PRODUCTION DATA.
A 3.3-V, 30-mA linear regulator is integrated into the DRV8340-Q1 device and is available for use by external circuitry. This regulator can provide the supply voltage for a low-power MCU or other circuitry supporting low current. The output of the DVDD regulator should be bypassed near the DVDD pin with a X5R or X7R, 1-µF, 6.3-V ceramic capacitor routed directly back to the adjacent AGND ground pin.
The DVDD nominal, no-load output voltage is 3.3 V. When the DVDD load current exceeds 30 mA, the regulator functions like a constant-current source. The output voltage drops significantly with a current load greater than 30 mA.
Use Equation 1 to calculate the power dissipated in the device by the DVDD linear regulator.
For example, at a VVM of 24 V, drawing 20 mA out of DVDD results in a power dissipation as shown in Equation 2.