AO4807L

AO4807L is a high/low side power switch with two power channels. It consists of two independent N-Channel MOSFETs in a single monolithic structure. It is designed to be used in motor control and power management systems, enabling a wide range of low loss and integrated system-level solutions for mobile devices and other general purpose power switching applications.

AO4807L Application Field and Working Principle

AO4807L is especially suited for driving two synchronized loads such as DC motors or solenoids. The two channels enable high-side and low-side switching of up to 10A in a 7 to 10V range. The power switch can also be used to configure an alternative load branch switch or load switch matrix. It is versatile and suitable for many applications including battery management systems and managing multiple power sources.

AO4807L is composed of two integrated MOSFETs, a high-side and a low-side switch. The high-side driver is a P-Channel MOSFET and the low-side is an N-Channel MOSFET. The high-side gate is driven by a low current logic gate output and the logic input is level translated from the logic level to drive both sides of the switch. The logic inputs are latched to ensure reliable operation. The logic output is pulled up to VDD through an internal pull-up resistor. The power switches can be switched on and off bydriving the logic inputs high and low, respectively.

The on-resistance of AO4807L varies with the logic level and can be set between 40mOhm and 130mOhm. The power supply is required to be between +4.5V and +6.5V for proper operation. The device has protection features, such as over-current, over-temperature and under-voltage protection. The protection features are enabled and disabled individually, allowing the user to select the appropriate protection features based on the application.

AO4807L can be used to provide a load short-circuit protection or as a power switching device in power supply systems and power management systems. It can be used to drive two synchronized loads or to switch a single load between two power sources. It is also suitable for driving actuator loads, such as DC motors, solenoids and relays.

Overall, the AO4807L is a highly integrated and versatile power switch for driving multiple loads. The on-resistance of the switch can be adjusted and the device has a complete set of protection features. It can be used for a variety of applications from battery management systems to load switching, allowing designers to create efficient and low power solutions in a wide range of applications.