Full-bridge step-down MOSFET: VDSS 30V, RDon: 1-5mR
 System power supply control MOSFET: VDSS 20 -30, RDon 12 -15, P channel
MOS drive diode: VR 40V
 Lithium battery charge: EVVOSEMI4054/EVVOSEMI4056
LDO: EVVOSEMI6206，EVVOSEMI75XX
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Smaller size, higher degree of miniaturization
 DFN5X6 power MOSFET has excellent power density and rated current, and low heat, high efficiency
MOSFET must meet peak high current requirements with low RDSON and good thermal impedance
Low power consumption is essential to improve battery life