LOAD DEPENDENT METHOD TO REDUCE QUIESCENT CURRENT DURING MULTI-CELL TO SINGLE-CELL BATTERY REGULATION

A power control device enables efficient power delivery in a battery-operated system while reducing quiescent current during low-power conditions. The device includes a control logic circuit configured to detect a power state of the system and generate control signals. An ideal diode circuit selectively couples power from either a first power input or a second power input to a system power output based on the control signals. A linear regulator circuit provides a first regulated power signal with a low quiescent current for maintaining minimal system functionality during standby or reduced-load operation. A switched-mode power supply circuit selectively provides a second regulated power signal with a higher quiescent current to support higher load conditions when activated. By transitioning between these power circuits depending on system state, the device improves energy efficiency, extends battery life, and supports compact battery-powered systems requiring both low-power standby and full-performance modes.