LM25145RGYR

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LM25145RGYR

LM25145RGYR

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  • 製造商。 部分 #LM25145RGYR
  • 包 VQFN (RGY)-20
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  • 有現貨的5453

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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
OutputType Transistor Driver
Function Step-Down
OutputConfiguration Positive
Topology Buck
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 6V ~ 42V
Frequency-Switching 100kHz ~ 1MHz
SynchronousRectifier Yes
ClockSync Yes
ControlFeatures Enable, Frequency Control, Ramp, Soft Start
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount, Wettable Flank
Package/Case 20-VFQFN Exposed Pad

概述

Description

The LM25145RGYR is a synchronous buck controller developed by Texas Instruments. It is designed for high-efficiency, high-power applications, offering excellent performance for a wide range of input voltages and output power requirements. The controller supports input voltages up to 42V and output voltages down to 0.8V, making it versatile for various power supply designs.
Key features of the LM25145RGYR include programmable switching frequency, current mode control for improved transient response and stability, and adaptive dead-time control to optimize efficiency. It also includes features like soft-start, adjustable current limit, and a power-good output to ensure reliable operation. With its low shutdown current and integrated MOSFET drivers, the LM25145RGYR is well-suited for applications that require high efficiency, such as telecommunications, industrial equipment, and data centers.
The device comes in a thermally enhanced package for effective heat dissipation and is designed to meet stringent industry standards for reliability and performance. Overall, the LM25145RGYR offers a robust solution for designing compact and efficient power supply systems.

Features

The LM25145RGYR is a synchronous buck controller designed for high-performance power supply applications. Key features include:
1. Wide Input Voltage Range: It supports a broad input voltage range, making it versatile for various applications.

2. High-Efficiency Operation: By using synchronous rectification, the device achieves high efficiency, which is crucial for reducing power loss and improving thermal performance.
3. Adjustable Switching Frequency: The controller allows for an adjustable switching frequency, enhancing flexibility in design and optimization for space and performance.
4. Current-Mode Control: It employs current-mode control for improved transient response and loop stability, crucial for maintaining output voltage accuracy during load changes.
5. Integrated MOSFET Drivers: The LM25145RGYR includes integrated high- and low-side MOSFET drivers, simplifying design and reducing external component count.
6. Protection Features: It incorporates various protection mechanisms, including overcurrent protection, thermal shutdown, and undervoltage lockout, ensuring reliable operation.
7. Power Good Indicator: The device features a power good signal to indicate when the output voltage is within the desired range.
8. Compact Package: Offered in a compact package, it is suitable for space-constrained applications.
These features make the LM25145RGYR ideal for use in industrial, automotive, and telecommunications power supply solutions.

Package

The LM25145RGYR is a DC-DC buck controller from Texas Instruments. It comes in a VQFN (Very Thin Quad Flat No-Lead) package with 24 pins. The specific package type designation is RGY, which corresponds to a VQFN package with dimensions of 4 mm x 4 mm.

Pinout

The LM25145RGYR is a highly integrated synchronous buck controller designed for applications that require high efficiency and reliability. It comes in a 32-pin VQFN (Very Thin Quad Flat No-Lead) package. The LM25145 operates over a wide input voltage range and delivers robust power conversion with high efficiency.
Key functions of the LM25145 include:
1. Synchronous Buck Controller: Efficient conversion from higher DC input voltages to lower DC output voltages.
2. Wide Input Voltage Range: Suitable for various industrial and automotive applications.
3. Programmable Switching Frequency: Offers flexibility in design to optimize efficiency and performance.
4. Fault Protection: Incorporates features like overcurrent protection, thermal shutdown, and more to ensure reliability.
5. Precision Enable and UVLO: Provides controlled startup and shutdown sequences.
6. Integrated MOSFET Drivers: Reduces component count and simplifies design.
7. Adjustable Soft-Start: Allows control over the inrush current during startup.
These features make the LM25145 suitable for high-performance power management applications.

Manufacturer

The LM25145RGYR is manufactured by Texas Instruments. Texas Instruments is a global semiconductor company that designs and manufactures a wide range of integrated circuits and electronic components. They serve industries including automotive, industrial, personal electronics, communications equipment, and enterprise systems. Texas Instruments is known for its innovation in analog and embedded processing products.

Application

The LM25145RGYR is a synchronous buck controller commonly used in applications requiring efficient step-down voltage conversion. It is suitable for high-performance industrial, automotive, and telecom power supplies. The controller supports wide input voltage ranges, making it ideal for distributed power systems, battery-powered devices, and FPGA, ASIC, or processor power supplies. Its features, such as programmable switching frequency and adjustable soft-start, ensure precise voltage regulation and transient response, enhancing performance in demanding environments.

Equivalent

The LM25145RGYR is a synchronous buck controller from Texas Instruments. Equivalent products from other manufacturers might include:
1. LTC3895 from Analog Devices
2. MAX17504 from Maxim Integrated (a part of Analog Devices)
3. TPS40090 from Texas Instruments
4. MP2940A from Monolithic Power Systems
These alternatives offer similar functionalities, but always check specific requirements such as voltage, current ratings, and features.

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