Overview
The LTC4359HMS8#WTRPBF, produced by Analog Devices Inc., is a positive high voltage ideal diode controller designed to drive an external N-channel MOSFET. This device effectively replaces a Schottky diode, offering significant improvements in power dissipation and efficiency. It operates within a wide voltage range of 4V to 80V and is capable of handling high current loads while maintaining a low forward-voltage drop across the MOSFET, ensuring smooth current delivery without oscillation.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Operating Supply Range | 4 | 80 | V | ||
| Operating Ambient Temperature Range | -40 | 125 | °C | ||
| Storage Temperature Range | -65 | 150 | °C | ||
| Lead Temperature (Soldering, 10 sec) | 300 | °C | |||
| Shutdown Current | SHDN = 0V | 9 | μA | ||
| Operating Current | 150 | μA | |||
| Reverse Input Protection | 40 | V |
Key Features
- Wide Operating Voltage Range: The LTC4359 operates from 4V to 80V, making it versatile for various applications.
- Reverse Input Protection: The device can withstand reverse input voltages up to 40V, enhancing reliability.
- Low Shutdown Current: It consumes only 9μA in shutdown mode, reducing power consumption when not in use.
- Low Operating Current: The device operates with a low current of 150μA, contributing to overall system efficiency.
- Smooth Switchover without Oscillation: Ensures seamless transition between power sources without oscillation, even at light loads.
- Fast Turn-Off: Quickly turns off the MOSFET in case of a power source failure or short, minimizing reverse current transients.
Applications
- Automotive Battery Protection: Suitable for automotive systems requiring high reliability and efficiency.
- Redundant Power Supplies: Ideal for systems with redundant power sources, ensuring smooth load sharing and fail-safe operation.
- Telecom Infrastructure: Used in telecom applications where reliable power distribution is critical.
- Computer Systems/Servers: Applicable in server and computer systems for efficient power management.
- Solar Systems: Useful in solar power systems to optimize energy harvesting and distribution.
Q & A
- What is the primary function of the LTC4359?
The LTC4359 is a positive high voltage ideal diode controller that drives an external N-channel MOSFET to replace a Schottky diode.
- What is the operating voltage range of the LTC4359?
The device operates within a voltage range of 4V to 80V.
- What is the shutdown current of the LTC4359?
The shutdown current is 9μA when SHDN = 0V.
- Does the LTC4359 offer reverse input protection?
- What are the typical applications of the LTC4359?
It is used in automotive battery protection, redundant power supplies, telecom infrastructure, computer systems/servers, and solar systems.
- How does the LTC4359 handle power source failures?
In case of a power source failure or short, the LTC4359 quickly turns off the MOSFET to minimize reverse current transients.
- What is the operating ambient temperature range of the LTC4359HMS8#WTRPBF?
The operating ambient temperature range is -40°C to 125°C.
- Is the LTC4359 suitable for automotive applications?
- How does the LTC4359 ensure smooth load sharing between power sources?
The device regulates the forward-voltage drop across the MOSFET to 30mV, ensuring smooth load sharing without oscillation.
- What is the package type of the LTC4359HMS8#WTRPBF?
The package type is 8-Lead Plastic MSOP.
