LTC4361CDC-1

Product Overview

Category

The LTC4361CDC-1 belongs to the category of power management integrated circuits (PMICs).

Use

It is primarily used for protecting sensitive electronic components from voltage transients and overvoltage conditions.

Characteristics

• Provides robust protection against voltage spikes and surges.
• Offers reverse polarity protection.
• Supports hot-swapping of power sources.
• Features adjustable undervoltage and overvoltage thresholds.
• Includes a fault flag output for system monitoring.

Package

The LTC4361CDC-1 is available in a 6-pin, 2mm x 2mm DFN (Dual Flat No-Lead) package.

Essence

The essence of LTC4361CDC-1 lies in its ability to safeguard electronic devices by preventing damage caused by voltage fluctuations and incorrect power connections.

Packaging/Quantity

The LTC4361CDC-1 is typically sold in reels containing 2500 units per reel.

Specifications

• Operating Voltage Range: 2.5V to 5.5V
• Overvoltage Threshold Range: 2.7V to 5.8V
• Undervoltage Threshold Range: 1.9V to 4.3V
• Reverse Voltage Protection: -40V
• Fault Flag Output: Active-Low Open Drain
• Quiescent Current: 35µA (typical)

Pin Configuration

The LTC4361CDC-1 features the following pin configuration:

```

---

| | --| VIN GND |-- Pin 1: VIN (Input Voltage) --| FLT VOUT|-- Pin 2: GND (Ground) --| EN FLT |-- Pin 3: FLT (Fault Flag Output) --| GND EN |-- Pin 4: EN (Enable) --| VOUT GND |-- Pin 5: VOUT (Output Voltage) |___________| ```

Functional Features

1. Overvoltage Protection: The LTC4361CDC-1 monitors the input voltage and disconnects the load when it exceeds the set overvoltage threshold, preventing damage to downstream components.

2. Undervoltage Protection: It also safeguards against undervoltage conditions by disabling the load when the input voltage falls below the set undervoltage threshold.

3. Reverse Polarity Protection: The device prevents reverse current flow in case of incorrect power connections, protecting the circuitry from potential damage.

4. Hot-Swap Capability: The LTC4361CDC-1 enables safe insertion and removal of power sources while the system is operational, minimizing downtime and reducing the risk of voltage transients.

5. Fault Flag Output: The fault flag pin provides a signal indicating the occurrence of an overvoltage or undervoltage event, allowing for system monitoring and diagnostics.

Advantages and Disadvantages

Advantages

• Robust protection against voltage spikes and surges.
• Flexible undervoltage and overvoltage threshold settings.
• Reverse polarity protection enhances system reliability.
• Hot-swap capability reduces downtime during power source changes.
• Fault flag output enables easy system monitoring.

Disadvantages

• Limited operating voltage range (2.5V to 5.5V).
• Requires external components for complete functionality.
• Relatively small package size may pose challenges during assembly.

Working Principles

The LTC4361CDC-1 utilizes a combination of internal comparators, MOSFET switches, and control logic to monitor the input voltage and protect the load from various voltage-related issues. By continuously monitoring the voltage levels, the device can quickly respond to overvoltage, undervoltage, and reverse polarity conditions, ensuring the safety of the connected circuitry.

Application Field Plans

The LTC4361CDC-1 finds applications in a wide range of electronic systems that require reliable protection against voltage transients and overvoltage events. Some potential application fields include:

1. Power supply units for computers and servers.
2. Industrial control systems.
3. Automotive electronics.
4. Telecommunications equipment.
5. Medical devices.
6. Consumer electronics.

Alternative Models

For users seeking alternative options, several similar devices can provide comparable functionality to the LTC4361CDC-1. These include:

1. TPS26600: A power management IC with integrated overvoltage and undervoltage protection features.
2. MAX16050: A reverse voltage protection switch with adjustable thresholds.
3. ADM1278: A hot-swap controller with built-in fault detection capabilities.

These alternative models offer similar protection and functionality, allowing users to choose the most suitable option for their specific requirements.

In conclusion, the LTC4361CDC-1 is a versatile power management IC that provides robust protection against voltage transients and overvoltage conditions. Its compact package, adjustable thresholds, and fault flag output