AO4886

AO4886 application field and working principle

AO4886 is a logic-controlled high current N-Channel MOSFET array which is manufactured by Alpha & Omega Semiconductor Inc. It is usually utilized as an interface between MOSFET driver and logic circuit, as these devices offer enhanced thermal and electrical characteristics in comparison to conventional FETs.

Features

• Wide operating temperature range from -40°C to +125°C
• Integrated ESD protection diodes
• Logic high shows FETs on
• Low RDS(on) P-channel -175mΩ (typical)
• Total gates drive up to 8A

Applications

• DC/DC converter power switch
• Power management system
• Switching power supply
• Load switch

Working Principle

AO4886 is a logic controlled power switch, meaning that it is controlled by the logic circuit. The array comprises of two series connected P-channel and N-channel MOSFETs with integrated ESD protection diodes. The gates of both MOSFETs are controlled by the logic circuit. When the gate of both MOSFETs is low, the entire array is off and current does not pass through it. When the gate of both MOSFETs is high, the array allows current to pass through it. To switch the array off, the gate of both MOSFETs is pulled down to ground.

Conclusion

AO4886 is a logic-controlled high current N-Channel MOSFET array which is manufactured by Alpha & Omega Semiconductor Inc. It is extremely useful as it offers enhanced thermal and electrical characteristics in comparison to conventional FETs. It is mostly used as an interface between MOSFET driver and logic circuit and finds its applications in DC/DC converter, power management system, switching power supply, and load switch.