Power Management IC Selection and Application Design

1. Power Management IC Classification

Power management ICs mainly include LDO (Low Dropout Regulator), DC-DC (Switching Power Supply), charging management IC, battery protection IC, etc.

2. LDO Selection Points

LDO selection needs to consider input-output voltage difference, output current, quiescent current, noise, PSRR and other parameters.

3. DC-DC Selection Points

DC-DC selection needs to consider topology (Buck/Boost/Buck-Boost), efficiency, switching frequency, ripple and other parameters.