LTC4226IMS-1#TRPBF

Product Overview

Category

The LTC4226IMS-1#TRPBF belongs to the category of integrated circuits (ICs) and specifically falls under the power management ICs.

Use

This product is primarily used for power supply and protection applications in various electronic systems. It provides features such as load sharing, hot swap, and overcurrent protection.

Characteristics

• Load sharing capability for multiple power sources.
• Hot swap functionality for safe insertion and removal of power supplies.
• Overcurrent protection to safeguard against excessive current flow.
• Wide input voltage range for compatibility with different power sources.
• Low quiescent current for efficient power management.

Package

The LTC4226IMS-1#TRPBF is available in a small MSOP-10 package. This package offers compactness and ease of integration into circuit designs.

Essence

The essence of LTC4226IMS-1#TRPBF lies in its ability to manage power supply and protect electronic systems from potential damage caused by overcurrent or faulty power sources.

Packaging/Quantity

This product is typically supplied in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 2.9V to 18V
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 20µA (typical)
• Maximum Continuous Current: 2A
• Fault Threshold: Adjustable
• Power Good Output: Open-drain, active low

Detailed Pin Configuration

The LTC4226IMS-1#TRPBF has the following pin configuration:

1. VCC: Power supply input
2. GATE: Gate control for external N-channel MOSFET
3. FLT: Fault output indicating overcurrent condition
4. PG: Power good output indicating valid power supply
5. SENSE+: Positive input for current sense resistor
6. SENSE-: Negative input for current sense resistor
7. GND: Ground connection
8. VCC2: Secondary power supply input
9. EN: Enable pin for load sharing control
10. REF: Reference voltage output

Functional Features

1. Load Sharing: The LTC4226IMS-1#TRPBF enables seamless load sharing between multiple power sources, ensuring a stable and reliable power supply to the system.
2. Hot Swap: It allows for safe insertion and removal of power supplies while the system is powered on, preventing any disruption or damage caused by sudden power changes.
3. Overcurrent Protection: The product incorporates overcurrent protection, which detects excessive current flow and shuts down the power supply to prevent damage to the system components.
4. Power Good Output: The power good output provides an indication of a valid power supply, allowing the system to monitor the status of the power source.
5. Adjustable Fault Threshold: The fault threshold can be adjusted to set the desired current limit for overcurrent protection.

Advantages and Disadvantages

Advantages

• Efficient load sharing capability ensures stable power distribution.
• Hot swap functionality allows for easy replacement of power supplies without system downtime.
• Overcurrent protection safeguards the system from potential damage.
• Wide input voltage range enhances compatibility with various power sources.
• Low quiescent current minimizes power consumption.

Disadvantages

• Limited maximum continuous current of 2A may not be suitable for high-power applications.
• MSOP-10 package may pose challenges in terms of heat dissipation for certain designs.

Working Principles

The LTC4226IMS-1#TRPBF operates by monitoring the current flowing through the sense resistor connected in series with the load. It compares this current with the adjustable fault threshold to detect overcurrent conditions. In case of an overcurrent event, the fault output is activated, and the power supply is shut down to protect the system.

The load sharing functionality is achieved by controlling the gate voltage of an external N-channel MOSFET. This allows for seamless transition between multiple power sources, ensuring a balanced distribution of load current.

Detailed Application Field Plans

The LTC4226IMS-1#TRPBF finds applications in various fields where power supply management and protection are critical. Some potential application areas include:

1. Server Systems: Ensuring uninterrupted power supply and protecting sensitive server components from overcurrent events.
2. Telecom Infrastructure: Managing power sources and providing hot swap capability in telecom equipment racks.
3. Industrial Automation: Safeguarding industrial control systems from faulty power sources and enabling smooth power source transitions.
4. Automotive Electronics: Protecting automotive electronic systems from overcurrent damage during power supply changes or faults.
5. Medical Devices: Providing reliable power management and protection in medical equipment to ensure patient safety.

Detailed and Complete Alternative Models

1. LTC4226IMS-2#TRPBF: Similar to LTC4226IMS-1#