Overview
The LTC4364HMS-2#TRPBF, produced by Analog Devices Inc., is a surge stopper with an ideal diode controller designed to protect loads from high voltage transients. This device limits and regulates the output during overvoltage events, such as load dump in automobiles, by controlling the voltage drop across an external N-channel MOSFET pass device. It also includes a timed, current-limited circuit breaker and monitors the input supply for overvoltage (OV) and undervoltage (UV) conditions. The LTC4364HMS-2#TRPBF is part of the LTC4364 family, which offers various package options and temperature ranges, making it versatile for different applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 4V to 80V | V |
| Maximum Surge Voltage | Over 80V with VCC clamp | V |
| Temperature Range | –40°C to 125°C | °C |
| Package Type | 16-Lead Plastic SO | |
| UV Input Threshold | 1.22 to 1.28 V | V |
| OV Input Threshold | 1.22 to 1.28 V | V |
| Shutdown Current at 12V | 10 μA | A |
| Storage Temperature Range | –65°C to 150°C | °C |
Key Features
- Surge stopper with ideal diode controller to protect loads from high voltage transients.
- Regulates output during overvoltage events and input shorts.
- Includes a timed, current-limited circuit breaker.
- Monitors input supply for overvoltage (OV) and undervoltage (UV) conditions.
- External MOSFET is held off in undervoltage, and auto-retry is disabled in overvoltage.
- Integrated ideal diode controller for reverse input protection and output voltage holdup.
- Adjustable output clamp voltage and fault timer.
- Reverse input protection to –40V and reverse output protection to –20V.
- Low 10 μA shutdown current at 12V.
- 0.1% retry duty cycle during faults (LTC4364-2 version).
Applications
- Automotive systems to protect against load dump and other high voltage transients.
- Industrial power systems requiring overvoltage and overcurrent protection.
- Power supplies and DC-DC converters needing surge protection and ideal diode functionality.
- Cable drop compensation and hot swap applications.
- Systems requiring reverse input and output protection.
Q & A
- What is the primary function of the LTC4364HMS-2#TRPBF?
The primary function is to protect loads from high voltage transients by limiting and regulating the output during overvoltage events.
- What is the operating voltage range of the LTC4364HMS-2#TRPBF?
The operating voltage range is from 4V to 80V.
- What types of protection does the LTC4364HMS-2#TRPBF offer?
It offers overvoltage (OV), undervoltage (UV), overcurrent, and reverse input/output protection.
- What is the purpose of the ideal diode controller in the LTC4364HMS-2#TRPBF?
The ideal diode controller replaces a Schottky diode to hold up the output voltage during input shorts and minimizes reverse current transients.
- How does the LTC4364HMS-2#TRPBF handle fault conditions?
In a fault condition, the device turns off the pass device after an adjustable fault timer expires. For the LTC4364-2 version, it automatically restarts after a delay, while the LTC4364-1 version latches off the pass device.
- What is the significance of the UV and OV input thresholds?
The UV and OV input thresholds (1.22 to 1.28 V) are critical for monitoring the input supply and triggering appropriate protection actions.
- What is the shutdown current of the LTC4364HMS-2#TRPBF at 12V?
The shutdown current is 10 μA at 12V.
- What are the available package types for the LTC4364HMS-2#TRPBF?
The device is available in a 16-Lead Plastic SO package.
- Is the LTC4364HMS-2#TRPBF suitable for automotive applications?
Yes, it is suitable for automotive applications and is available with controlled manufacturing to support automotive reliability requirements.
- How does the device handle reverse input protection?
The device provides reverse input protection up to –40V and reverse output protection up to –20V.
