Specifications
| Attribute | Value |
| Package | Tube |
| ProductStatus | Active |
| Type | N+1 ORing Controller |
| FETType | N-Channel |
| Ratio-Input:Output | N:1 |
| InternalSwitch(s) | No |
| DelayTime-ON | 200 µs |
| DelayTime-OFF | 300 ns |
| Current-Output(Max) | 220µA |
| Current-Supply | 150 µA |
| Voltage-Supply | 4V ~ 80V |
| Applications | Automotive, Redundant Power Supplies, Telecom Infrastructure |
| OperatingTemperature | -40°C ~ 125°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) |
Overview
Description
The LTC4359HMS8 is a low-loss power path controller designed for applications requiring efficient power management. It functions as an ideal diode controller, facilitating the use of an external N-channel MOSFET to replace a traditional diode for power path control, thereby significantly reducing power dissipation and improving system efficiency. The device operates over a wide input voltage range, making it suitable for various applications, including battery-powered systems and redundant power supplies.
Key features of the LTC4359 include an ability to prevent reverse current, ensuring current flows in the desired direction, and a low quiescent current, which conserves power during operation. It also offers protection against overvoltage and undervoltage conditions, enhancing system reliability. The LTC4359 is typically housed in an MSOP-8 package, offering a compact footprint for space-constrained designs. Additionally, it supports a fast turn-off feature, which helps in minimizing power loss and enhancing transient response. Overall, the LTC4359HMS8 is an efficient solution for enhancing power path performance while minimizing energy loss.
Key features of the LTC4359 include an ability to prevent reverse current, ensuring current flows in the desired direction, and a low quiescent current, which conserves power during operation. It also offers protection against overvoltage and undervoltage conditions, enhancing system reliability. The LTC4359 is typically housed in an MSOP-8 package, offering a compact footprint for space-constrained designs. Additionally, it supports a fast turn-off feature, which helps in minimizing power loss and enhancing transient response. Overall, the LTC4359HMS8 is an efficient solution for enhancing power path performance while minimizing energy loss.
Equivalent
The LTC4359HMS8 is a positive high-voltage ideal diode controller designed for reverse input protection and load sharing. Equivalent products from other manufacturers include the MAX16141 from Maxim Integrated, the LM74700-Q1 from Texas Instruments, and the NIS5020 from ON Semiconductor. These components have similar functionalities, offering ideal diode control for reverse current blocking and load sharing applications in power management. Always check the specific datasheets to ensure compatibility with your requirements.
Features
The LTC4359HMS8 is a load share controller designed for power supply applications. Key features include:
1. Operating Voltage: It operates within a wide voltage range, typically from 4V to 80V, making it versatile for various applications.
2. Reverse Current Blocking: The device prevents reverse current, protecting the power source when multiple supplies are paralleled.
3. Low Quiescent Current: It features low quiescent current, which enhances efficiency, especially in battery-operated systems.
4. Fault Protection: The LTC4359HMS8 includes mechanisms for fault protection, helping to prevent damage in abnormal conditions.
5. N-Channel MOSFET Drive: It drives an N-channel MOSFET to achieve low on-resistance, further improving efficiency.
6. Compact Package: Available in a compact MSOP-8 package, it is suitable for space-constrained applications.
7. Easy Implementation: The device is designed for easy and straightforward implementation in circuit designs.
These features make the LTC4359HMS8 ideal for applications requiring efficient power sharing, protection, and reliability in power management systems.
1. Operating Voltage: It operates within a wide voltage range, typically from 4V to 80V, making it versatile for various applications.
2. Reverse Current Blocking: The device prevents reverse current, protecting the power source when multiple supplies are paralleled.
3. Low Quiescent Current: It features low quiescent current, which enhances efficiency, especially in battery-operated systems.
4. Fault Protection: The LTC4359HMS8 includes mechanisms for fault protection, helping to prevent damage in abnormal conditions.
5. N-Channel MOSFET Drive: It drives an N-channel MOSFET to achieve low on-resistance, further improving efficiency.
6. Compact Package: Available in a compact MSOP-8 package, it is suitable for space-constrained applications.
7. Easy Implementation: The device is designed for easy and straightforward implementation in circuit designs.
These features make the LTC4359HMS8 ideal for applications requiring efficient power sharing, protection, and reliability in power management systems.
Pinout
The LTC4359HMS8 is a 8-pin device designed for power management applications. It functions as an ideal diode controller, which is used to replace a diode in power path applications to reduce power dissipation and improve efficiency. The pin functions are as follows:
1. VCC (Pin 1): Power supply input.
2. OUT (Pin 2): Output pin connected to the power MOSFET source.
3. SENSE (Pin 3): Input for sensing the voltage across the MOSFET.
4. SHDN (Pin 4): Shutdown control input.
5. GND (Pin 5): Ground reference.
6. IN (Pin 6): Input pin connected to the power MOSFET drain.
7. DGATE (Pin 7): Drives the gate of the external N-channel MOSFET.
8. STATUS (Pin 8): Provides a status output that indicates when the MOSFET is conducting.
These pin functions allow the LTC4359HMS8 to efficiently control the external MOSFET, minimizing forward voltage drop and power loss in the system.
1. VCC (Pin 1): Power supply input.
2. OUT (Pin 2): Output pin connected to the power MOSFET source.
3. SENSE (Pin 3): Input for sensing the voltage across the MOSFET.
4. SHDN (Pin 4): Shutdown control input.
5. GND (Pin 5): Ground reference.
6. IN (Pin 6): Input pin connected to the power MOSFET drain.
7. DGATE (Pin 7): Drives the gate of the external N-channel MOSFET.
8. STATUS (Pin 8): Provides a status output that indicates when the MOSFET is conducting.
These pin functions allow the LTC4359HMS8 to efficiently control the external MOSFET, minimizing forward voltage drop and power loss in the system.
Manufacturer
The LTC4359HMS8 is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits used in electronic equipment. They provide solutions for a wide range of industries, including industrial, automotive, communications, healthcare, and consumer electronics. The company's products are used in applications such as data conversion, signal processing, power management, and more. Analog Devices is known for its focus on high-performance analog and digital signal processing technology.
Application
The LTC4359HMS8 is a compact ideal diode controller used for power management applications. Its primary application areas include:
1. Redundant Power Supplies: Ensures seamless switching between power sources for uninterrupted power delivery.
2. High-Availability Systems: Utilized in servers and telecommunications equipment to enhance system reliability.
3. ORing Diodes: Replaces ORing diodes in power distribution systems to reduce power loss and heat dissipation.
4. Solar Power Systems: Manages power transfer and maximizes efficiency in photovoltaic setups.
5. Battery Backup Systems: Ensures efficient battery charging and discharging, particularly in UPS and energy storage systems.
Its low power dissipation and compact size make it ideal for use in space-constrained and heat-sensitive environments.
1. Redundant Power Supplies: Ensures seamless switching between power sources for uninterrupted power delivery.
2. High-Availability Systems: Utilized in servers and telecommunications equipment to enhance system reliability.
3. ORing Diodes: Replaces ORing diodes in power distribution systems to reduce power loss and heat dissipation.
4. Solar Power Systems: Manages power transfer and maximizes efficiency in photovoltaic setups.
5. Battery Backup Systems: Ensures efficient battery charging and discharging, particularly in UPS and energy storage systems.
Its low power dissipation and compact size make it ideal for use in space-constrained and heat-sensitive environments.
Package
The LTC4359HMS8 is housed in an 8-lead MSOP (Mini Small Outline Package). This package is compact, making it suitable for applications where board space is limited.
