ZHCSP55A October 2019 – October 2021 DRV10982-Q1
PRODUCTION DATA
The DRV10982-Q1 device includes a step-down hysteretic voltage regulator that can be operated as either a switching buck regulator using an external inductor or as a linear regulator using an external resistor. The best efficiency is achieved when the step-down regulator is in buck mode (see Figure 8-1). The regulator output voltage is 5 V. When the regulated voltage drops by the hysteresis level, the high-side FET turns on to raise the regulated voltage back to the target of 5 V. The switching frequency of the hysteretic regulator is not constant and changes with load.
If the step-down regulator is configured in buck mode, see IREG_MAX_L in Section 7.5 to determine the amount of current provided for external load. If the step-down regulator is configured in linear mode, see IREG_MAX_R in Section 7.5 to determine the amount of current provided for external load. Active current ICC is higher in buck mode compared to linear mode.

| Buck Regulator with External Inductor | Buck Regulator with External Resistor |