Overview
The LTC4367IDD#PBF, produced by Analog Devices Inc., is a highly advanced integrated circuit designed to protect electronic devices from a wide range of voltage-related issues. This component is part of the LTC4367 series, which offers comprehensive protection against overvoltage, undervoltage, and reverse supply polarity. It ensures that the power supply input voltages remain within a safe operating range, making it ideal for applications in automotive, avionics, industrial equipment, and other critical systems.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| VIN Input Voltage (Operating Range) | 2.5 | 60 | V | |
| VIN Input Voltage (Protection Range) | -40 | 100 | V | |
| Input Supply Undervoltage Lockout (VIN Rising) | 1.8 | 2.2 | 2.4 | V |
| Input Supply Current (On) | 70 | µA | ||
| Input Supply Current (Off) | 5 | µA | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Storage Temperature Range | -65 | 150 | °C | |
| Lead Temperature (Soldering, 10sec) | 300 | °C |
Key Features
- Accurate overvoltage and undervoltage comparators to ensure power is applied only within a user-selectable voltage window.
- Reverse supply protection circuits that automatically isolate the load from negative input voltages.
- A high voltage charge pump to enhance the gate of external N-channel power MOSFETs.
- Low quiescent current of 70µA during operation and 5µA during shutdown.
- A shutdown pin for external control of the MOSFETs and low current shutdown state.
- A fault output to indicate when the GATE pin is pulling low.
- Available in 8-lead MSOP and 3mm × 3mm DFN packages.
Applications
The LTC4367IDD#PBF is versatile and can be used in various applications, including:
- Automotive systems: Protects against voltage fluctuations and reverse polarity.
- Avionics systems: Ensures reliable operation in harsh environmental conditions.
- Industrial equipment: Safeguards against overvoltage, undervoltage, and reverse supply situations.
- General power management: Ideal for any system requiring robust voltage protection.
Q & A
- What is the primary function of the LTC4367IDD#PBF?
The primary function is to protect electronic devices from overvoltage, undervoltage, and reverse supply polarity by controlling the gate voltages of external N-channel MOSFETs. - What is the operating voltage range of the LTC4367IDD#PBF?
The operating voltage range is from 2.5V to 60V. - How does the LTC4367IDD#PBF protect against reverse polarity?
It automatically isolates the load from negative input voltages using reverse supply protection circuits. - What is the quiescent current during operation and shutdown?
The quiescent current is 70µA during operation and 5µA during shutdown. - What types of packages are available for the LTC4367IDD#PBF?
It is available in 8-lead MSOP and 3mm × 3mm DFN packages. - What is the temperature range for the LTC4367IDD#PBF?
The operating temperature range is from -40°C to 85°C. - How does the fault output work?
The fault output indicates when the GATE pin is pulling low, signaling a fault condition. - Can the LTC4367IDD#PBF be used in automotive applications?
Yes, it is suitable for automotive systems to protect against voltage fluctuations and reverse polarity. - What is the purpose of the shutdown pin?
The shutdown pin allows for external control of the MOSFETs and places the device in a low current shutdown state. - How does the LTC4367IDD#PBF filter noise at the input supply?
It has a GATE turn-on delay period (typically 32ms) that filters noise and prevents chattering of power at the load.
