SLVSD14A June 2017 – June 2020 DRV10983-Q1
PRODUCTION DATA.
The DRV10983-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 7). 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 Electrical Characteristics 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 Electrical Characteristics 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 |