Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR) |
| ProductStatus | Obsolete |
| Function | Step-Up/Step-Down |
| OutputConfiguration | Negative |
| Topology | Cuk |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 2.7V |
| Voltage-Input(Max) | 14V |
| Voltage-Output(Min/Fixed) | -1.23V |
| Voltage-Output(Max) | -22V |
| Current-Output | 900mA |
| Frequency-Switching | 1.4MHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | SC-74A, SOT-753 |
Tổng quan
Description
The LM2611BMF is a high-efficiency, low-noise switching regulator designed for applications requiring negative output voltage conversion. Manufactured by Texas Instruments, this inverting regulator is part of the LM2611 series, known for its compact and robust performance in power management tasks. It operates with an input voltage range of 2.7V to 14V and is capable of achieving output voltages down to -12V, making it versatile for various electronic applications.
Key features include a current-mode PWM (Pulse Width Modulation) control for stable operation, low output voltage ripple, and high efficiency, typically over 80%. The device supports adjustable switching frequency and incorporates protection features like thermal shutdown and current limiting, enhancing reliability. It comes in a small SOT-23 package, which is suitable for space-constrained designs.
Applications of the LM2611BMF include powering digital circuits, sensors, and other devices requiring negative supply voltages. Its ease of use, combined with its ability to deliver steady performance, makes it a popular choice for engineers dealing with compact, low-power, and precision electronics.
Key features include a current-mode PWM (Pulse Width Modulation) control for stable operation, low output voltage ripple, and high efficiency, typically over 80%. The device supports adjustable switching frequency and incorporates protection features like thermal shutdown and current limiting, enhancing reliability. It comes in a small SOT-23 package, which is suitable for space-constrained designs.
Applications of the LM2611BMF include powering digital circuits, sensors, and other devices requiring negative supply voltages. Its ease of use, combined with its ability to deliver steady performance, makes it a popular choice for engineers dealing with compact, low-power, and precision electronics.
Equivalent
The LM2611BMF is a negative boost (inverting) switching regulator. Equivalent products include:
1. TPS63700 from Texas Instruments
2. LT1932 from Analog Devices
3. MC34063 from ON Semiconductor
4. LTC660 from Analog Devices
These alternatives may offer similar functionality, but it's essential to compare specific features, performance metrics, and pin configurations to ensure compatibility with your application.
1. TPS63700 from Texas Instruments
2. LT1932 from Analog Devices
3. MC34063 from ON Semiconductor
4. LTC660 from Analog Devices
These alternatives may offer similar functionality, but it's essential to compare specific features, performance metrics, and pin configurations to ensure compatibility with your application.
Features
The LM2611BMF is a high-efficiency, low-noise, inverting DC-DC converter. Key features include:
1. Negative Output Voltage: It produces a regulated negative output voltage from a positive input voltage.
2. Wide Input Voltage Range: Operates from 1.4V to 14V, making it versatile for various applications.
3. Output Voltage Flexibility: Adjustable negative output voltage, typically from -1.5V to -14V.
4. High Switching Frequency: Operates at a fixed frequency of around 1.4 MHz, which helps reduce the size of external components.
5. Low Output Ripple: Offers low output voltage ripple, contributing to better performance in noise-sensitive applications.
6. Efficiency: Delivers high efficiency over a wide load range.
7. Current Limit Protection: Includes built-in current limiting to protect the device during overload conditions.
8. Shutdown Function: Features a shutdown pin to turn off the device, reducing power consumption.
9. Compact Package: Available in small package sizes, such as a SOT-23, for space-constrained designs.
These features make it suitable for battery-powered and portable applications where space and efficiency are critical.
1. Negative Output Voltage: It produces a regulated negative output voltage from a positive input voltage.
2. Wide Input Voltage Range: Operates from 1.4V to 14V, making it versatile for various applications.
3. Output Voltage Flexibility: Adjustable negative output voltage, typically from -1.5V to -14V.
4. High Switching Frequency: Operates at a fixed frequency of around 1.4 MHz, which helps reduce the size of external components.
5. Low Output Ripple: Offers low output voltage ripple, contributing to better performance in noise-sensitive applications.
6. Efficiency: Delivers high efficiency over a wide load range.
7. Current Limit Protection: Includes built-in current limiting to protect the device during overload conditions.
8. Shutdown Function: Features a shutdown pin to turn off the device, reducing power consumption.
9. Compact Package: Available in small package sizes, such as a SOT-23, for space-constrained designs.
These features make it suitable for battery-powered and portable applications where space and efficiency are critical.
Pinout
The LM2611BMF is a voltage inverter from the LM2611 series, typically used in applications requiring negative voltage generation. This device is available in a SOT-23-6 package, which means it has 6 pins. Here is a brief description of its pin functions:
1. SW: This is the switch node connected to the inductor for the power regulation process.
2. GND: Ground pin, which serves as the reference point for the device.
3. FB: The feedback pin is used for connecting the output voltage to the internal comparator for regulation.
4. VDD: The power supply pin for the device operation.
5. SHDN: Shutdown pin that can be used to enable or disable the device.
6. COMP: Compensation pin used for stability and transient response adjustments.
These pin assignments are crucial for designing a circuit using the LM2611BMF for generating negative voltages efficiently.
1. SW: This is the switch node connected to the inductor for the power regulation process.
2. GND: Ground pin, which serves as the reference point for the device.
3. FB: The feedback pin is used for connecting the output voltage to the internal comparator for regulation.
4. VDD: The power supply pin for the device operation.
5. SHDN: Shutdown pin that can be used to enable or disable the device.
6. COMP: Compensation pin used for stability and transient response adjustments.
These pin assignments are crucial for designing a circuit using the LM2611BMF for generating negative voltages efficiently.
Manufacturer
The LM2611BMF is manufactured by Texas Instruments. Texas Instruments, commonly known as TI, is an American technology company that designs and manufactures semiconductors and various integrated circuits. They are one of the largest semiconductor companies globally and are known for their development of analog chips and embedded processors, which are used in electronics across a wide array of industries. TI's products are vital in enabling advancements in consumer electronics, automotive systems, industrial automation, communications equipment, and more. The company focuses on innovation and providing solutions that help engineers develop new and improved technologies.
Application
The LM2611BMF is a high-efficiency, inverting DC-DC converter often used in applications requiring a negative voltage supply. Common application areas include powering negative voltage rails in analog systems, biasing applications for RF amplifiers, and generating negative voltages in portable devices and battery-powered equipment. Its efficiency and compact size make it suitable for use in handheld devices, LCD displays, and other electronics where space and power efficiency are critical. Additionally, it can be used in sensor interfaces and low-power signal processing applications.
Package
The LM2611BMF is typically available in a SOT-23 (Small Outline Transistor) package. This package type is known for its small size and is commonly used for surface-mounted devices in electronic circuits.
