LM25141QRGETQ1

Product Overview

Category: Integrated Circuit (IC)

Use: The LM25141QRGETQ1 is a high-performance synchronous buck controller designed for automotive applications. It provides a regulated output voltage from an input voltage source, making it suitable for various power supply designs.

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Synchronous rectification - Overcurrent protection - Thermal shutdown protection

Package: The LM25141QRGETQ1 comes in a small outline integrated circuit (SOIC) package, which ensures easy integration into electronic circuits.

Essence: This IC serves as a control unit for regulating the output voltage in automotive power supply systems.

Packaging/Quantity: The LM25141QRGETQ1 is typically sold in reels containing 250 units.

Specifications

• Input Voltage Range: 4.5V to 42V
• Output Voltage Range: 0.8V to VIN
• Switching Frequency: Up to 2MHz
• Operating Temperature Range: -40°C to 125°C
• Maximum Duty Cycle: 100%
• Quiescent Current: 120µA

Pin Configuration

The LM25141QRGETQ1 has a 16-pin configuration with the following pin assignments:

1. VCC - Power supply input
2. PGND - Power ground
3. SS/TR - Soft-start/Tracking input
4. FB - Feedback voltage input
5. COMP - Compensation node
6. EN - Enable input
7. RT/CLK - Oscillator timing resistor/clock synchronization input
8. SYNC - External synchronization input
9. AGND - Analog ground
10. BOOT - Bootstrap capacitor connection
11. PH - High-side MOSFET gate drive output
12. LX - Inductor connection
13. PG - Power good output
14. SS/TR - Soft-start/Tracking input
15. FB - Feedback voltage input
16. COMP - Compensation node

Functional Features

• High Efficiency: The LM25141QRGETQ1 utilizes synchronous rectification and advanced control techniques to achieve high conversion efficiency, minimizing power losses.
• Wide Input Voltage Range: With an input voltage range of 4.5V to 42V, this IC can handle a wide variety of automotive power supply systems.
• Adjustable Output Voltage: The output voltage can be adjusted within the specified range to meet specific application requirements.
• Overcurrent Protection: The LM25141QRGETQ1 incorporates overcurrent protection to safeguard the circuit from excessive current flow.
• Thermal Shutdown Protection: In case of excessive temperature, the IC automatically shuts down to prevent damage.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Wide input voltage range allows for versatile applications. - Adjustable output voltage provides flexibility. - Overcurrent and thermal shutdown protection enhance reliability.

Disadvantages: - Limited maximum duty cycle may restrict certain applications. - Requires external components for complete power supply design.

Working Principles

The LM25141QRGETQ1 operates as a synchronous buck controller, regulating the output voltage by controlling the switching of the power MOSFETs. It uses a feedback mechanism to compare the actual output voltage with the desired value and adjusts the duty cycle accordingly. By modulating the duty cycle, the IC controls the energy transfer from the input to the output, maintaining a stable output voltage.

Detailed Application Field Plans

The LM25141QRGETQ1 is widely used in automotive power supply systems, including but not limited to: - Electric vehicles (EVs) - Hybrid electric vehicles (HEVs) - Battery management systems (BMS) - LED lighting systems - Industrial automation

Detailed and Complete Alternative Models

1. LM25142QRGETQ1
2. LM25143QRGETQ1
3. LM25144QRGETQ1
4. LM25145QRGETQ1
5. LM25146QRGETQ1

These alternative models offer similar functionality and can be considered as replacements for the LM25141QRGETQ1 in various applications.

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