LM2731YMFX

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LM2731YMFX

IC REG BOOST ADJ 1.8A SOT23-5

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規格

Part Status Obsolete
Function Step-Up
Output Configuration Positive
Topology Boost
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 2.7V
Voltage - Input (Max) 14V
Voltage - Output (Min/Fixed) 2.7V
Voltage - Output (Max) 22V (Switch)
Current - Output 1.8A (Switch)
Frequency - Switching 600kHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case SC-74A, SOT-753
Supplier Device Package SOT-23-5
Base Product Number LM2731

概述

Description

The LM2731YMFX is a high-efficiency, step-up (boost) DC-DC converter designed for applications requiring a compact power solution. It features a wide input voltage range, typically from 2.5V to 5.5V, making it suitable for battery-powered devices. The LM2731 provides a fixed output voltage of 3.3V or adjustable output options, delivering up to 1.5A of load current, which is ideal for powering LEDs, microcontrollers, and other low-power electronics.
Key features include a high switching frequency of up to 1.2MHz, which allows for the use of small external components and minimizes board space. The device also incorporates built-in protection mechanisms such as thermal shutdown and overcurrent protection. With an efficiency rating exceeding 85%, it helps extend battery life in portable applications.
The LM2731YMFX is packaged in a compact, thermally enhanced 10-pin MSOP, making it easy to integrate into various designs. This converter is commonly used in consumer electronics, IoT devices, and other applications where efficient power conversion is critical.

Features

The LM2731YMFX is a high-efficiency, step-up (boost) DC-DC converter designed for applications requiring a compact power solution. Key features include:
1. Input Voltage Range: Operates from 2.5V to 5.5V, making it suitable for single-cell lithium-ion batteries.
2. Output Voltage: Adjustable output voltage up to 28V.
3. High Efficiency: Features a peak efficiency of up to 95%, minimizing heat generation and extending battery life.
4. Integrated Power Switch: Reduces component count and simplifies design.
5. Switching Frequency: Operates at a fixed frequency of 1.2 MHz, allowing for smaller external components.
6. Current Limit Protection: Includes built-in overcurrent protection to enhance reliability.
7. Small Package: Available in a compact 10-pin MSOP package, ideal for space-constrained applications.
These features make the LM2731YMFX suitable for portable electronics, LED drivers, and power management systems.

Package

The LM2731YMFX is packaged in a small, surface-mount type known as the VSSOP (Very Thin Shrink Small Outline Package). It typically features 8 pins, providing a compact design suitable for space-constrained applications.

Pinout

The LM2731YMFX is a high-efficiency step-up (boost) converter with a pin count of 8. Its primary functions include:
1. VIN (Pin 1): Input voltage supply.
2. SW (Pin 2): Switch node, connects to the inductor.
3. GND (Pin 3): Ground reference.
4. COMP (Pin 4): Compensation pin for stability and loop response.
5. FB (Pin 5): Feedback pin, used to set the output voltage.
6. EN (Pin 6): Enable pin, used to turn the device on or off.
7. VOUT (Pin 7): Output voltage where the regulated output is available.
8. NC (Pin 8): No connection.
This IC is designed for portable applications, providing a compact solution for boosting low input voltages to higher output levels, making it suitable for battery-powered devices.

Manufacturer

The LM2731YMFX is manufactured by Texas Instruments (TI), a global semiconductor company headquartered in Dallas, Texas. Texas Instruments designs and produces a wide range of analog and embedded processing chips, with applications spanning various industries, including automotive, industrial, communications, and consumer electronics. The company is known for its innovation in analog technology, microcontrollers, and digital signal processing, making it a significant player in the semiconductor market. TI focuses on providing high-performance solutions that enhance the functionality and efficiency of electronic devices.

Application

The LM2731YMFX is a step-up (boost) DC-DC converter primarily used in applications requiring voltage amplification, such as battery-operated devices, portable electronics, LED drivers, and power management systems. It is suitable for powering microcontrollers, sensors, and RF transmitters that require higher voltage levels from lower voltage sources, enhancing efficiency in compact designs.

Equivalent

Equivalent products to the LM2731YMFX chip include the TPS63060, LTC3105, MAX1682, and MICR3318. These alternatives offer similar functionalities in boost converter applications, providing adjustable output voltages and various efficiency levels. Always check specific voltage, current ratings, and features for compatibility with your design requirements.

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