The APW8822/A/B/C integrates dual step-down, constanton-time, synchronous PWM controllers (that drives dual N-channel MOSFETs for each channel) and two low dropout regulators as well as various protections into a chip. The PWM controllers step down high voltage of a battery to generate low-voltage for NB applications. The output of PWM1 and PWM2 can be adjusted from 2V to 5.5V by setting a resistive voltage-divider from VOUTx to GND. The linear regulators provide 5V and 3.3V output for standby power supply.
The W25Q64FW (64M-bit) Serial Flash memory provides a storage solutionfor the systems with limited space, pins and power. The 25Q series offersflexibility and performance well beyond ordinary Serial Flash devices....