LM25119PSQE/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

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

Package: 16-pin WQFN package

Essence: The LM25119PSQE/NOPB is a power management IC designed for efficient power conversion in various applications.

Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 4.5V to 42V
• Output Voltage Range: 0.8V to 37V
• Switching Frequency: Up to 2 MHz
• Maximum Output Current: 1.5A
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM25119PSQE/NOPB features a 16-pin WQFN package with the following pin configuration:

1. VIN: Input voltage
2. SW: Switch node connection
3. PGND: Power ground
4. AGND: Analog ground
5. FB: Feedback voltage input
6. EN: Enable control input
7. SS/TR: Soft-start/tracking input
8. VCC: Supply voltage for internal circuitry
9. COMP: Compensation pin
10. RT/CLK: Timing resistor/clock synchronization input
11. SYNC: Synchronization input
12. VOUT: Output voltage
13. BST: Bootstrap capacitor connection
14. PG: Power good output
15. SS/TR: Soft-start/tracking output
16. GND: Ground

Functional Features

• Wide input voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility.
• High efficiency ensures minimal power loss.
• Overcurrent protection safeguards against excessive current flow.
• Thermal shutdown protection prevents overheating.

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings. - Wide input voltage range accommodates various power sources. - Adjustable output voltage allows for customization. - Overcurrent and thermal protection enhance reliability.

Disadvantages: - Limited maximum output current of 1.5A may not be suitable for high-power applications. - Requires external components for proper operation.

Working Principles

The LM25119PSQE/NOPB operates as a step-down (buck) converter, converting a higher input voltage to a lower output voltage. It utilizes a switching regulator topology to achieve high efficiency. The IC controls the switching of an internal power MOSFET to regulate the output voltage based on the feedback received from the FB pin. The EN pin enables or disables the device, while the SS/TR pin controls the soft-start and tracking functions.

Detailed Application Field Plans

The LM25119PSQE/NOPB is suitable for a wide range of applications, including but not limited to: - Industrial automation - Automotive electronics - Telecommunications equipment - Power supplies - LED lighting - Battery-powered systems

Alternative Models

For similar power management requirements, alternative models to consider include: - LM25118PSQE/NOPB - LM25120PSQE/NOPB - LM25121PSQE/NOPB - LM25122PSQE/NOPB

These alternatives offer similar features and specifications, providing options for different design considerations.

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