LM5050MKX-2/NOPB

Product Overview

Category

The LM5050MKX-2/NOPB belongs to the category of integrated circuits (ICs) specifically designed for power management applications.

Use

This product is primarily used for controlling and monitoring high-side load switches in various electronic systems.

Characteristics

• High-side load switch controller
• Wide input voltage range
• Low quiescent current
• Overvoltage protection
• Thermal shutdown protection
• Fault flag output
• Adjustable current limit

Package

The LM5050MKX-2/NOPB is available in a small outline package (SOP) with eight pins.

Essence

The essence of the LM5050MKX-2/NOPB lies in its ability to efficiently control and protect high-side load switches, ensuring reliable operation and preventing damage to the system.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Input Voltage Range: 4.5V to 40V
• Quiescent Current: 35µA (typical)
• Operating Temperature Range: -40°C to +125°C
• Maximum Output Current: 1.5A
• Adjustable Current Limit Range: 0.5A to 3A

Detailed Pin Configuration

The LM5050MKX-2/NOPB has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. IN: Control input for enabling/disabling the load switch
4. FLT: Fault flag output indicating overcurrent or thermal shutdown
5. ILIM: Current limit adjustment pin
6. PGND: Power ground reference
7. OUT: Output connection to the load switch
8. VS: High-side voltage supply input

Functional Features

• Load switch control: The LM5050MKX-2/NOPB provides a control input (IN) to enable or disable the high-side load switch.
• Overvoltage protection: It incorporates overvoltage protection to safeguard the load switch and the system from excessive voltage levels.
• Thermal shutdown protection: The device includes thermal shutdown protection, which activates when the temperature exceeds a specified threshold.
• Fault flag output: The FLT pin outputs a fault flag signal when an overcurrent or thermal shutdown event occurs.
• Adjustable current limit: The ILIM pin allows for adjusting the current limit of the load switch within a specific range.

Advantages and Disadvantages

Advantages

• Wide input voltage range enables compatibility with various power supply systems.
• Low quiescent current minimizes power consumption.
• Overvoltage and thermal shutdown protection enhance system reliability.
• Adjustable current limit offers flexibility in load switch applications.

Disadvantages

• Limited maximum output current may restrict usage in high-power applications.
• Eight-pin package size may not be suitable for space-constrained designs.

Working Principles

The LM5050MKX-2/NOPB operates by receiving a control signal at the IN pin. When the control signal is high, the load switch is enabled, allowing current flow from the input to the output. Conversely, when the control signal is low, the load switch is disabled, interrupting the current path.

The device continuously monitors the load current and compares it to the adjustable current limit set via the ILIM pin. If the load current exceeds the set limit, the device triggers the fault flag output (FLT), indicating an overcurrent condition. Additionally, if the temperature rises above the thermal shutdown threshold, the device activates the thermal shutdown protection, disabling the load switch.

Detailed Application Field Plans

The LM5050MKX-2/NOPB finds applications in various fields, including but not limited to: - Power distribution systems - Battery management systems - Industrial automation - Automotive electronics - LED lighting control

Detailed and Complete Alternative Models

1. LM5050MKX-1/NOPB: Similar to LM5050MKX-2/NOPB, but with a different pin configuration.
2. LM5060MKX-2/NOPB: Load switch controller with higher maximum output current (3A).
3. LM25066QMH/NOPB: Integrated load switch controller with additional features like power sequencing and fault diagnostics.

These alternative models offer similar functionality and can be considered as substitutes for the LM5050MKX-2/NOPB depending on specific requirements.

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