Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Function | Step-Up |
| OutputConfiguration | Positive |
| Topology | Boost |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 2.7V |
| Voltage-Input(Max) | 14V |
| Voltage-Output(Min/Fixed) | 1.23V |
| Voltage-Output(Max) | 22V (Switch) |
| Current-Output | 1.8A (Switch) |
| Frequency-Switching | 600kHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | SC-74A, SOT-753 |
Overview
Description
The LM2731YMF is a high-frequency, step-up DC-DC converter from Texas Instruments, designed to operate with low input voltages and deliver high-efficiency power conversion. It belongs to the LM2731 series and is specifically in the SOT-23 package with a fixed-frequency operation of 1.6 MHz. This device is suitable for applications requiring a compact, efficient, and reliable boost converter. It features a 22V switch capable of delivering output currents up to 1A, making it ideal for portable electronics, battery-powered devices, and other systems needing a small footprint with high power efficiency.
The LM2731YMF includes internal frequency compensation, current limiting, and thermal shutdown protection, enhancing its reliability and safety. It operates with a minimal number of external components, simplifying the design process. The high switching frequency allows for smaller external inductors and capacitors, benefiting space-constrained applications. Furthermore, the device has a shutdown mode with a low quiescent current, contributing to extended battery life in portable applications. Overall, the LM2731YMF is a versatile and efficient solution for boosting voltage in compact electronic designs.
The LM2731YMF includes internal frequency compensation, current limiting, and thermal shutdown protection, enhancing its reliability and safety. It operates with a minimal number of external components, simplifying the design process. The high switching frequency allows for smaller external inductors and capacitors, benefiting space-constrained applications. Furthermore, the device has a shutdown mode with a low quiescent current, contributing to extended battery life in portable applications. Overall, the LM2731YMF is a versatile and efficient solution for boosting voltage in compact electronic designs.
Equivalent
The LM2731YMF is a step-up DC-DC converter from Texas Instruments. Equivalent products include the LM2731XMF (a variant with a different switch current limit), the MC34063A from ON Semiconductor, the LT1613 from Analog Devices, and the MIC2288 from Microchip Technology. When selecting an equivalent, ensure compatibility with voltage, current, and package specifications. Always verify detailed specifications and pin compatibility before substituting to ensure proper functionality in your application.
Features
The LM2731YMF is a high-efficiency, step-up DC-DC converter designed by Texas Instruments. It operates with an input voltage range of 2.7V to 14V and can produce an output voltage up to 24V. Key features include a high switching frequency of 1.6 MHz, which allows for the use of small external components and reduced PCB space. It has a current limit of 1.1A and is capable of delivering significant power output, making it suitable for a variety of applications. The device features a low shutdown current of less than 2 µA, enhancing energy efficiency during idle periods. Designed for reliability, it includes over-temperature protection and current limiting. Additionally, the LM2731YMF comes in a small SOT-23 package, which helps save space in compact designs. It's used in applications such as LCD bias supplies, portable devices, and other electronics requiring efficient voltage step-up conversions.
Pinout
The LM2731YMF is a simple, high-efficiency step-up DC-DC converter. It typically comes in a SOT-23 package with 5 pins. Here is a brief overview of the pin functions:
1. SW (Pin 1): The switch output pin. Connects to the inductor and diode to facilitate the boost operation.
2. GND (Pin 2): Ground pin. It serves as the reference point for the circuit.
3. FB (Pin 3): Feedback pin. Connected to a resistor divider from the output to set the output voltage.
4. SHDN (Pin 4): Shutdown pin. Pull low to disable the device and reduce quiescent current. Typically connect to VIN for automatic start-up.
5. VIN (Pin 5): Input voltage pin. Connects to the input supply voltage.
The LM2731 is designed for low power applications and provides a simple way to boost voltage in battery-powered devices or other low-voltage systems.
1. SW (Pin 1): The switch output pin. Connects to the inductor and diode to facilitate the boost operation.
2. GND (Pin 2): Ground pin. It serves as the reference point for the circuit.
3. FB (Pin 3): Feedback pin. Connected to a resistor divider from the output to set the output voltage.
4. SHDN (Pin 4): Shutdown pin. Pull low to disable the device and reduce quiescent current. Typically connect to VIN for automatic start-up.
5. VIN (Pin 5): Input voltage pin. Connects to the input supply voltage.
The LM2731 is designed for low power applications and provides a simple way to boost voltage in battery-powered devices or other low-voltage systems.
Manufacturer
The LM2731YMF is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of integrated circuits and other electronic components. TI is known for its innovations in analog and embedded processing technologies. The company serves various markets, including industrial, automotive, personal electronics, communications equipment, and enterprise systems. Texas Instruments is one of the largest and most established companies in the semiconductor industry, with a focus on developing products that enable electronics everywhere to be smarter and more efficient.
Application
The LM2731YMF is a high-frequency boost converter typically used in applications requiring step-up voltage conversion. Key application areas include:
1. Portable Devices: Powering OLED displays and backlighting in smartphones and tablets.
2. Battery-Powered Equipment: Extending battery life by efficiently boosting voltage.
3. Automotive: Providing power for on-board electronics requiring higher voltages.
4. Industrial Systems: Supplying power to sensors or modules that operate above input voltage levels.
5. Consumer Electronics: Useful in devices such as digital cameras and portable media players.
6. Communication Equipment: Enhancing RF power amplifier performance by boosting supply voltage.
This versatility makes the LM2731YMF suitable for various electronic designs requiring efficient voltage elevation.
1. Portable Devices: Powering OLED displays and backlighting in smartphones and tablets.
2. Battery-Powered Equipment: Extending battery life by efficiently boosting voltage.
3. Automotive: Providing power for on-board electronics requiring higher voltages.
4. Industrial Systems: Supplying power to sensors or modules that operate above input voltage levels.
5. Consumer Electronics: Useful in devices such as digital cameras and portable media players.
6. Communication Equipment: Enhancing RF power amplifier performance by boosting supply voltage.
This versatility makes the LM2731YMF suitable for various electronic designs requiring efficient voltage elevation.
Package
The LM2731YMF is a step-up DC-DC converter from Texas Instruments. It comes in a small SOT-23-5 package, which is a surface-mount device with five pins. This package type is designed for compact applications, making it ideal for portable electronic devices where space is a constraint.
