Linear Technology LTC4357HMS8#PBF - High Voltage Diode-OR Controller

The LTC4357HMS8#PBF from Linear Technology is a robust high voltage Diode-OR controller that is essential for systems requiring a reliable power redundancy or load sharing. This innovative component is designed to replace power Schottky diodes with N-channel MOSFETs, creating a more efficient, low loss alternative for power ORing applications.

With an operating voltage range of 9V to 80V, the LTC4357 is suitable for a wide array of applications from automotive to industrial systems where high voltage tolerance is crucial. The device ensures that the higher voltage supply is effectively blocked while the lower voltage supply is seamlessly connected to the load, preventing any reverse current flow that could potentially damage the system.

The LTC4357HMS8#PBF is housed in an MSOP-8 package, offering a compact footprint that is valuable in space-constrained applications. The controller is characterized by its simplicity, requiring minimal external components which not only saves board space but also reduces overall system cost.

Key features of the LTC4357HMS8#PBF include:

• Control of N-Channel MOSFETs for Power ORing
• Wide Operating Voltage Range: 9V to 80V
• Low Quiescent Current: 125µA
• Gate Drive for Standard Threshold MOSFETs
• Reverse Input Protection to –60V
• Charge Pump to Drive N-Channel MOSFETs
• Automatic Handoff Between Supplies
• Overcurrent Control
• MSOP-8 Package

The LTC4357 also features an overcurrent comparator that protects the MOSFET from high current transients. With its automatic control, the device ensures smooth handoff between sources, making it an ideal solution for systems that cannot afford any interruption in power supply.

Whether it's used in redundant power supply systems, satellite systems, or servers, the LTC4357HMS8#PBF stands out for its ability to provide a more efficient and reliable power management solution. Its rugged design and Linear Technology's commitment to quality make it a smart choice for critical applications where power integrity cannot be compromised.