LM2731XMF

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LM2731XMF

+BOM

IC REG BOOST ADJ 1.8A SOT23-5

  • 제조업체텍사스 인스트루먼트(주)

  • 제조업체 부품 #LM2731XMF

  • 패키지 SOT-23 (DBV)-5

  • 재고5267

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사양

속성 가치
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Not For New Designs
Function Step-Up
OutputConfiguration Positive
Topology Boost
OutputType Adjustable
NumberofOutputs 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 1.6MHz
SynchronousRectifier No
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case SC-74A, SOT-753

개요

Description

The LM2731XMF is a high-frequency boost converter from Texas Instruments, designed to efficiently step up voltage in compact applications. Operating with an input voltage range of 2.7V to 14V, it can deliver output voltages up to 40V. The device is characterized by a fixed switching frequency of 1.6 MHz, which minimizes the size of external components, making it ideal for portable and space-constrained applications.
Key features include a low shutdown current and high conversion efficiency, which is critical for battery-powered devices. The LM2731XMF is equipped with an internal power switch that enhances its efficiency and performance. It also offers protection features like current limiting and thermal shutdown to ensure reliable operation.
The device is typically used in applications such as LCD bias supplies, white LED drivers, and other devices requiring efficient voltage boosting. Its tiny SOT-23 package further aids in space-saving designs, providing a reliable solution for engineers looking to implement boost conversion in their systems.

Equivalent

The LM2731XMF is a boost converter IC from Texas Instruments. Equivalent products from other manufacturers might include the MIC2288 from Microchip, the LT1613 from Analog Devices, and the TPS61040 from Texas Instruments itself. These alternatives provide similar functionality in terms of boosting DC voltage levels. Always check the specific datasheet for each product to ensure compatibility in terms of electrical characteristics and pin configuration.

Features

The LM2731XMF is a high-frequency, step-up DC-DC converter designed for applications that require a small solution size and efficient power management. Key features include:
1. Wide Input Voltage Range: Operates from 2.7V to 14V, making it versatile for various power sources.
2. High Switching Frequency: Typically 1.6 MHz, allowing the use of small inductors and capacitors, enabling a compact design.
3. Output Voltage Flexibility: Capable of generating output voltages up to 25V.
4. Efficiency: Designed for high efficiency to extend battery life in portable applications.
5. Low Shutdown Current: Draws minimal current in shutdown mode, reducing power consumption.
6. Integrated Power MOSFET: Includes a 1.4A, 80mΩ (typical) N-channel MOSFET for efficient power switching.
7. Soft Start: Built-in soft start feature to minimize inrush current during startup.
8. Current Mode PWM Operation: Ensures stability and fast transient response.
9. Thermal Shutdown: Protects the device from excessive heat.
These features make the LM2731XMF ideal for battery-powered devices, LCD bias supplies, and other applications requiring efficient voltage boosting.

Pinout

The LM2731XMF is a boost converter IC with a 6-pin SOT-23 package. Its primary function is to step up (boost) a lower input voltage to a higher output voltage. Here's a quick overview of its pin configuration and functions:
1. SW (Switch Pin): This is the switching node where the inductor and diode are connected. It is the main output pin that connects to the inductor.
2. GND (Ground Pin): This pin is the ground reference for the IC.
3. FB (Feedback Pin): This pin is used to set the output voltage. A resistor divider is connected from the output to this pin to regulate the voltage.
4. VCC (Supply Voltage Pin): This pin provides the input supply voltage for the internal circuitry of the chip.
5. SHDN (Shutdown Pin): A logic input pin that is used to enable or disable the device. Pulling this pin low shuts down the device.
6. COMP (Compensation Pin): This pin is used for frequency compensation. A capacitor is usually connected to this pin to stabilize the feedback loop.
The LM2731XMF is used in applications requiring efficient voltage boosting with minimal external components.

Manufacturer

The LM2731XMF is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide array of electronic components, including integrated circuits and microcontrollers. TI is well-known for its innovations in analog and embedded processing technologies, which are used in a wide range of applications across various industries such as automotive, industrial, personal electronics, and communications equipment. The company focuses on developing products that improve energy efficiency, enhance connectivity, and provide increased functionality in electronic devices. TI is headquartered in Dallas, Texas, and operates manufacturing, design, and sales facilities worldwide.

Application

The LM2731XMF is a boost converter IC, primarily used in applications requiring step-up voltage conversion. Common application areas include:
1. Portable Devices: Provides efficient power management for battery-operated gadgets.
2. LED Drivers: Powers LED arrays in display backlighting and flashlight applications.
3. Industrial: Used in sensors and low-power industrial equipment requiring higher voltage from a low-voltage source.
4. Telecommunications: Powers RF and mixed-signal circuits.
5. Consumer Electronics: Enhances performance in devices such as digital cameras and MP3 players.
6. Automotive: Utilized in systems needing DC-DC conversion for different vehicle modules.
These applications leverage the LM2731XMF's efficiency and small package size for space-constrained designs.

Package

The LM2731XMF is typically housed in a SOT-23 package, which is a small outline transistor package with three to six pins. This package type is compact, making it suitable for space-constrained applications. The LM2731XMF is a boost converter used in power management applications.