Overview
The LTC4357MPMS8#PBF is a positive high voltage ideal diode controller produced by Analog Devices Inc. This device is designed to drive an external N-channel MOSFET, effectively replacing a Schottky diode in various applications. It is particularly useful in diode-OR configurations, hot swap controllers, and other power management systems where low loss and high efficiency are crucial.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Supply Voltage (IN, VDD) | –1V to 100V | |
| Output Voltage (OUT) | –0.3V to 100V | |
| Gate Voltage (GATE) | VIN – 0.2V to VIN + 10V | Notes 1, 2 |
| Operating Ambient Temperature Range | –55°C to 125°C | LTC4357MP |
| Storage Temperature Range | –65°C to 150°C | |
| Lead Temperature (Soldering, 10 sec) | 300°C | MS Package |
| Package Type | 8-Lead Plastic MSOP | |
| θJA (Thermal Resistance, Junction to Ambient) | 163°C/W | MS8 Package |
Key Features
- Drives an external N-channel MOSFET to replace a Schottky diode, reducing power loss and increasing efficiency.
- Supports high voltage operations up to 100V.
- Low voltage drop across the MOSFET, minimizing power dissipation.
- Hot swap capability, allowing for safe insertion and removal of power sources without disrupting the system.
- Cable drop compensation to maintain stable output voltage despite cable resistive losses.
- Compact 8-lead MSOP package, suitable for space-constrained designs.
Applications
- Diode-OR configurations for redundant power supplies.
- Hot swap controllers for data centers and server systems.
- Power distribution units (PDUs) and power supplies.
- High-reliability systems requiring low loss and high efficiency power management.
- Industrial and automotive power systems where robust and efficient power control is necessary.
Q & A
- What is the primary function of the LTC4357MPMS8#PBF? The primary function is to drive an external N-channel MOSFET to replace a Schottky diode, reducing power loss and increasing efficiency.
- What is the maximum operating voltage for the LTC4357MPMS8#PBF? The maximum operating voltage is 100V for both IN and VDD pins.
- What are the temperature ranges for the LTC4357MPMS8#PBF? The operating ambient temperature range is –55°C to 125°C, and the storage temperature range is –65°C to 150°C.
- What package type is the LTC4357MPMS8#PBF available in? It is available in an 8-lead Plastic MSOP package.
- What is the thermal resistance (θJA) for the MS8 package? The thermal resistance (θJA) for the MS8 package is 163°C/W.
- Can the LTC4357MPMS8#PBF be used in hot swap applications? Yes, it supports hot swap capabilities, allowing for safe insertion and removal of power sources.
- What is the purpose of cable drop compensation in the LTC4357MPMS8#PBF? Cable drop compensation helps maintain a stable output voltage despite resistive losses in the cables.
- Where can the LTC4357MPMS8#PBF be used? It can be used in diode-OR configurations, power distribution units, high-reliability systems, and industrial and automotive power systems.
- How does the LTC4357MPMS8#PBF reduce power loss? It reduces power loss by driving an external N-channel MOSFET, which has a lower voltage drop compared to a Schottky diode.
- What is the lead temperature for soldering the LTC4357MPMS8#PBF? The lead temperature for soldering is 300°C for 10 seconds.
