Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR) |
| ProductStatus | Obsolete |
| Type | DC DC Regulator |
| Topology | Step-Up (Boost) |
| InternalSwitch(s) | Yes |
| NumberofOutputs | 1 |
| Voltage-Supply(Min) | 2.2V |
| Voltage-Supply(Max) | 7V |
| Voltage-Output | 21V |
| Current-Output/Channel | 350mA (Switch) |
| Applications | Backlight |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | SC-74A, SOT-753 |
Tổng quan
Description
The LM2703MFX-ADJ is a high-efficiency DC-DC step-up converter designed to boost lower input voltages to higher output voltages. It is produced by Texas Instruments and belongs to the LM2703 series. The adjustable version (ADJ) allows the user to set the desired output voltage using external resistors. This device is ideal for applications requiring a compact power supply solution, such as battery-powered devices.
Key features include:
1. High efficiency, typically over 80%.
2. A wide input voltage range, accommodating various battery levels.
3. Adjustable output voltage, which provides flexibility for different application needs.
4. Low quiescent current, prolonging battery life in portable devices.
5. Built-in protection features like over-current protection and thermal shutdown to ensure reliability.
The LM2703MFX-ADJ is packaged in a small form factor, making it suitable for space-constrained applications. It typically comes in a SOT-23-5 package, allowing easy integration into circuit designs. Its robust performance and adaptability make it a popular choice for engineers designing power supplies for portable electronics.
Key features include:
1. High efficiency, typically over 80%.
2. A wide input voltage range, accommodating various battery levels.
3. Adjustable output voltage, which provides flexibility for different application needs.
4. Low quiescent current, prolonging battery life in portable devices.
5. Built-in protection features like over-current protection and thermal shutdown to ensure reliability.
The LM2703MFX-ADJ is packaged in a small form factor, making it suitable for space-constrained applications. It typically comes in a SOT-23-5 package, allowing easy integration into circuit designs. Its robust performance and adaptability make it a popular choice for engineers designing power supplies for portable electronics.
Equivalent
The LM2703MFX-ADJ is a DC-DC boost converter. Equivalent products from different manufacturers might include:
1. TPS61040 from Texas Instruments
2. MT3608 from Monolithic Power Systems
3. LT1613 from Analog Devices
4. NCP1403 from ON Semiconductor
Ensure to compare key specifications such as input/output voltage range, switching frequency, and current capability to confirm compatibility. Always review the datasheets for detailed specifications and pin configurations.
1. TPS61040 from Texas Instruments
2. MT3608 from Monolithic Power Systems
3. LT1613 from Analog Devices
4. NCP1403 from ON Semiconductor
Ensure to compare key specifications such as input/output voltage range, switching frequency, and current capability to confirm compatibility. Always review the datasheets for detailed specifications and pin configurations.
Features
The LM2703MFX-ADJ is a step-up DC-DC converter from Texas Instruments designed for efficient voltage boosting. Key features include:
1. Adjustable Output Voltage: It allows for an adjustable output voltage via an external resistor divider, providing flexibility for various applications.
2. Wide Input Voltage Range: The device supports a broad input voltage range, typically from 2.2V to 7V, making it suitable for battery-powered devices.
3. High Efficiency: It is designed for high efficiency, which helps in prolonging battery life in portable devices.
4. Low Quiescent Current: The converter features a low quiescent current, enhancing its suitability for low-power applications.
5. Switching Frequency: Operates at a high switching frequency (typically 1.6MHz), allowing the use of small external components.
6. Protection Features: Includes features like cycle-by-cycle current limiting and thermal shutdown for enhanced reliability.
7. Compact Package: Available in a small SOT-23 package, making it ideal for space-constrained designs.
These features make the LM2703MFX-ADJ suitable for applications requiring efficient voltage boosting, such as in portable electronics.
1. Adjustable Output Voltage: It allows for an adjustable output voltage via an external resistor divider, providing flexibility for various applications.
2. Wide Input Voltage Range: The device supports a broad input voltage range, typically from 2.2V to 7V, making it suitable for battery-powered devices.
3. High Efficiency: It is designed for high efficiency, which helps in prolonging battery life in portable devices.
4. Low Quiescent Current: The converter features a low quiescent current, enhancing its suitability for low-power applications.
5. Switching Frequency: Operates at a high switching frequency (typically 1.6MHz), allowing the use of small external components.
6. Protection Features: Includes features like cycle-by-cycle current limiting and thermal shutdown for enhanced reliability.
7. Compact Package: Available in a small SOT-23 package, making it ideal for space-constrained designs.
These features make the LM2703MFX-ADJ suitable for applications requiring efficient voltage boosting, such as in portable electronics.
Pinout
The LM2703MFX-ADJ is a step-up DC-DC converter from Texas Instruments. It is typically used to boost low voltages to higher levels. The device comes in an 8-pin VSSOP package, and the "ADJ" in its name indicates it is an adjustable version, allowing the output voltage to be set via external resistors.
Key pins and their functions:
1. FB (Feedback): Connects to a resistor divider to set the output voltage.
2. SW (Switch): Connects to the inductor for energy storage.
3. GND (Ground): Ground reference for the device.
4. VIN (Input Voltage): Supplies input voltage to the device.
5. EN (Enable): Enables or disables the device.
6. SHDN (Shutdown): Low-power shutdown mode activation.
7. COMP (Compensation): Used to stabilize the feedback loop with external components.
8. NC (No Connect): Typically not connected internally.
The LM2703MFX-ADJ is designed for efficiency in portable applications and can produce a high output voltage with relatively low input voltage.
Key pins and their functions:
1. FB (Feedback): Connects to a resistor divider to set the output voltage.
2. SW (Switch): Connects to the inductor for energy storage.
3. GND (Ground): Ground reference for the device.
4. VIN (Input Voltage): Supplies input voltage to the device.
5. EN (Enable): Enables or disables the device.
6. SHDN (Shutdown): Low-power shutdown mode activation.
7. COMP (Compensation): Used to stabilize the feedback loop with external components.
8. NC (No Connect): Typically not connected internally.
The LM2703MFX-ADJ is designed for efficiency in portable applications and can produce a high output voltage with relatively low input voltage.
Manufacturer
The LM2703MFX-ADJ is manufactured by Texas Instruments Incorporated. Texas Instruments, commonly referred to as TI, is an American technology company that designs and manufactures semiconductors and various integrated circuits. These products are sold to electronics designers and manufacturers globally. TI is known for its innovation in the field of analog technology, embedded processors, and digital light processing, among other technologies. The company has a wide-ranging product portfolio that serves multiple industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems.
Application
The LM2703MFX-ADJ is a step-up DC-DC converter used in various applications where efficient voltage boosting is needed. Key application areas include:
1. Portable Devices: Provides power management for battery-operated devices like smartphones, tablets, and cameras.
2. LED Lighting: Drives LEDs in backlighting applications and display panels.
3. Consumer Electronics: Powers microcontrollers and other digital circuits requiring a higher voltage than the input supply.
4. Communication Equipment: Supports RF power amplifiers and other communication modules.
5. Industrial Applications: Used in sensors and other low-power industrial electronics requiring reliable voltage conversion.
Its adjustable output voltage feature makes it versatile for different circuit requirements.
1. Portable Devices: Provides power management for battery-operated devices like smartphones, tablets, and cameras.
2. LED Lighting: Drives LEDs in backlighting applications and display panels.
3. Consumer Electronics: Powers microcontrollers and other digital circuits requiring a higher voltage than the input supply.
4. Communication Equipment: Supports RF power amplifiers and other communication modules.
5. Industrial Applications: Used in sensors and other low-power industrial electronics requiring reliable voltage conversion.
Its adjustable output voltage feature makes it versatile for different circuit requirements.
Package
The LM2703MFX-ADJ is a step-up DC-DC converter by Texas Instruments, available in a SOT-23-5 package. This small form factor is ideal for applications requiring a compact solution for voltage boosting.
