LTC4361IDC-1

Product Overview

Category

The LTC4361IDC-1 belongs to the category of integrated circuits (ICs) used in power management applications.

Use

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

Characteristics

• The LTC4361IDC-1 offers robust protection against voltage spikes, surges, and reverse polarity.
• It provides fast response time and low quiescent current consumption.
• This IC is designed to operate in a wide range of temperatures and voltages.
• It is suitable for various power supply designs due to its versatility.

Package

The LTC4361IDC-1 is available in a small 6-pin DFN (Dual Flat No-Lead) package.

Essence

The essence of LTC4361IDC-1 lies in its ability to safeguard electronic devices by preventing damage caused by voltage fluctuations and reverse polarity.

Packaging/Quantity

The LTC4361IDC-1 is typically sold in reels containing a quantity of 250 units per reel.

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Overvoltage Threshold: Adjustable from 2.8V to 5.5V
• Reverse Voltage Protection: Up to -40V
• Quiescent Current: 10μA (typical)
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The LTC4361IDC-1 features the following pin configuration:

1. GATE: Gate drive output for external N-channel MOSFET.
2. VIN: Input voltage pin.
3. GND: Ground reference pin.
4. VOUT: Output voltage pin.
5. FB: Feedback pin for adjusting overvoltage threshold.
6. OV: Overvoltage flag output pin.

Functional Features

• Overvoltage Protection: The LTC4361IDC-1 monitors the input voltage and quickly shuts off the external MOSFET when an overvoltage condition is detected, preventing damage to downstream components.
• Reverse Polarity Protection: This IC safeguards against reverse polarity by blocking current flow in the event of incorrect battery or power supply connection.
• Adjustable Overvoltage Threshold: The overvoltage threshold can be easily adjusted using an external resistor divider connected to the FB pin.
• Fault Flag Output: The OV pin provides a fault flag signal to indicate an overvoltage condition.

Advantages and Disadvantages

Advantages

• Robust protection against voltage transients and overvoltage conditions.
• Fast response time ensures quick shutdown during fault conditions.
• Low quiescent current consumption helps conserve power.
• Wide operating temperature range allows for use in various environments.
• Versatile design makes it suitable for different power supply applications.

Disadvantages

• Limited to a maximum input voltage of 5.5V.
• Requires an external N-channel MOSFET for operation.

Working Principles

The LTC4361IDC-1 operates by continuously monitoring the input voltage. When the voltage exceeds the set overvoltage threshold, the IC turns off the external MOSFET, disconnecting the load from the input source. This protects the downstream circuitry from potential damage caused by excessive voltage levels. Additionally, the IC provides reverse polarity protection by blocking current flow when the input voltage is connected incorrectly.

Detailed Application Field Plans

The LTC4361IDC-1 finds application in various fields, including but not limited to: - Power supply units for industrial equipment - Automotive electronics - Battery charging systems - Portable electronic devices - Communication systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the LTC4361IDC-1 include: - LTC4362: Adjustable overvoltage and reverse polarity protection IC. - MAX6495: Overvoltage and undervoltage protection IC with adjustable thresholds. - TPS2660: Wide input voltage range power distribution switch with overvoltage protection.

These alternative models can be considered based on specific application requirements and design constraints.

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