LM2731XMF

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LM2731XMF

IC REG BOOST ADJ 1.8A SOT23-5

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規格

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

概述

Description

The LM2731XMF is a high-efficiency, step-up DC-DC converter from Texas Instruments. It is designed to provide a simple and efficient boost in voltage for applications requiring higher output voltages from low voltage sources. The LM2731XMF operates with a 1.6 MHz fixed frequency, enabling the use of small external components and making it suitable for compact designs. This device can output up to 14V with a switch current limit of 1.6A, making it ideal for powering LED backlights, OLED displays, and other portable electronic devices.
Key features of the LM2731XMF include a wide input voltage range from 2.7V to 14V, internal compensation, and a soft-start feature to prevent inrush current during startup. It also features a shutdown mode to reduce power consumption when not in use. The device is housed in a space-saving 6-pin SOT-23 package, enhancing its suitability for space-constrained applications. Overall, the LM2731XMF is valued for its efficiency, compact size, and versatility in boosting voltage in various electronics.

Features

The LM2731XMF is a high-efficiency boost converter from Texas Instruments. Key features include:
1. Input Voltage Range: It operates with an input voltage range of 2.7V to 14V, making it versatile for various power supply configurations.

2. Output Voltage: The device can generate output voltages up to 24V, suitable for applications requiring higher voltage levels.
3. Switching Frequency: It operates at a fixed switching frequency of 1.6 MHz, allowing the use of smaller inductors and capacitors, and enabling compact design layouts.
4. Efficiency: The LM2731XMF offers high efficiency, typically above 85%, due to its low RDS(on) switch and optimized design.
5. Package: It is available in a small SOT-23-5 package, which is ideal for space-constrained applications.
6. Protection Features: It includes internal current limiting and thermal shutdown features to protect the device under fault conditions.
7. Applications: Common applications include battery-powered devices, LCD bias supplies, and white LED backlighting.
These features make the LM2731XMF suitable for portable devices and other applications requiring efficient step-up voltage conversion.

Package

The LM2731XMF is a boost converter IC from Texas Instruments, available in a SOT-23 package. Specifically, it uses a 5-pin SOT-23 (Thin Small Outline Transistor) design, which is compact and suitable for surface-mount applications.

Pinout

The LM2731XMF is a step-up DC-DC converter from Texas Instruments. It is typically packaged in a 6-pin SOT-23. The function of this device is to boost a lower input voltage to a higher output voltage, making it useful in applications where higher voltage levels are needed from a lower voltage source.
Here is a brief overview of the pin functions:
1. SW (Switch Pin): Connects to the inductor and the diode, where the switching action occurs.
2. GND (Ground): Common ground reference for the input and output.
3. FB (Feedback): Receives the feedback voltage from the output to regulate the output voltage.
4. SHDN (Shutdown): When pulled low, this pin disables the device, putting it into a low-power shutdown mode.
5. VIN (Input Voltage): Supplies the input voltage to the converter.
6. COMP (Compensation): Used to stabilize the control loop with external components.
These features allow the LM2731XMF to efficiently convert power with minimal external components.

Manufacturer

The LM2731XMF is manufactured by Texas Instruments, a global semiconductor company. Texas Instruments (TI) is known for designing and producing a wide range of analog and embedded processing products. The company focuses on developing components that are essential for electronics systems, including processors, amplifiers, sensors, and power management devices, among others. TI serves various industries such as automotive, industrial, consumer electronics, and communications. The LM2731XMF is a boost converter, which reflects TI's expertise in power management solutions.

Application

The LM2731XMF is a boost converter primarily used in applications requiring a step-up voltage regulation. Common areas include powering LED backlighting, OLED displays, and portable devices that need increased voltage from a lower voltage source. It's also used in battery-powered equipment, such as laptops and mobile devices, to efficiently manage power. Additionally, it finds use in biasing circuits for sensor applications and wireless communication devices. Its compact form factor and efficiency make it suitable for space-constrained applications.

Equivalent

The LM2731XMF is a wide-input, high-frequency boost converter. Equivalent products include the TPS61040, MAX1703, and LT1613. These alternatives offer similar voltage boosting capabilities and are suitable for similar applications involving power management in portable devices. Always check the specific voltage, current, and switching frequency requirements to ensure full compatibility.

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