사양
| 속성 | 가치 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Function | Step-Up/Step-Down |
| Output Configuration | Negative |
| Topology | Cuk |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2.45V |
| Voltage - Input (Max) | 16V |
| Voltage - Output (Min/Fixed) | -1.255V |
| Voltage - Output (Max) | -34V |
| Current - Output | 1A (Switch) |
| Frequency - Switching | 1.2MHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
개요
Description
The LT1931IS5#TRPBF is a high-efficiency, low-noise, inverting DC/DC converter manufactured by Analog Devices (formerly Linear Technology). It is designed to provide a regulated negative output voltage from a positive input voltage. Encased in a compact SOT-23 package, it is suitable for space-constrained applications.
Key features include a wide input voltage range from 2.6V to 12V, enabling it to work with various power sources. It can deliver up to 300 mA of output current, making it useful for moderate power applications. The LT1931IS5#TRPBF operates at a fixed frequency of 1.2 MHz, which allows the use of small-sized external components, reducing the overall footprint of the power supply solution.
It includes features such as low shutdown current, internal soft-start, and current limiting for protection against fault conditions. The device is commonly used in applications like LCD biasing, sensor power supplies, and in situations where a negative voltage rail is required. Its high efficiency and small package make it an attractive choice for portable and battery-operated devices.
Key features include a wide input voltage range from 2.6V to 12V, enabling it to work with various power sources. It can deliver up to 300 mA of output current, making it useful for moderate power applications. The LT1931IS5#TRPBF operates at a fixed frequency of 1.2 MHz, which allows the use of small-sized external components, reducing the overall footprint of the power supply solution.
It includes features such as low shutdown current, internal soft-start, and current limiting for protection against fault conditions. The device is commonly used in applications like LCD biasing, sensor power supplies, and in situations where a negative voltage rail is required. Its high efficiency and small package make it an attractive choice for portable and battery-operated devices.
Equivalent
The LT1931IS5#TRPBF is a switched capacitor voltage inverter. Equivalent products include:
1. Maxim Integrated MAX860ESA+: Similar voltage inverter with comparable features.
2. Texas Instruments LM2662: Another charge pump voltage inverter.
3. Microchip Technology MCP1252: Offers similar functionality in voltage conversion.
4. Analog Devices ADM8828: Provides similar inverting capabilities.
Always verify the specifications to ensure compatibility with your specific application.
1. Maxim Integrated MAX860ESA+: Similar voltage inverter with comparable features.
2. Texas Instruments LM2662: Another charge pump voltage inverter.
3. Microchip Technology MCP1252: Offers similar functionality in voltage conversion.
4. Analog Devices ADM8828: Provides similar inverting capabilities.
Always verify the specifications to ensure compatibility with your specific application.
Features
The LT1931IS5#TRPBF is a step-up DC-DC converter produced by Analog Devices, formerly Linear Technology. Key features of this component include:
1. Type: It is a switch-mode boost converter.
2. Input Voltage: Operates from a low input voltage, typically 1.2V to 15V.
3. Output Voltage: Capable of delivering output voltages up to 34V.
4. Switching Frequency: Offers a fixed switching frequency of 1.2MHz, allowing for the use of small external components.
5. Efficiency: Designed for high efficiency, often above 80% at moderate loads.
6. Packages: Comes in a compact SOT-23-5 package, making it suitable for space-constrained applications.
7. Load Current: Can provide output currents up to 2A, depending on the input voltage and external components used.
8. Protection Features: Includes thermal shutdown and current limiting for enhanced reliability.
9. Applications: Suitable for applications such as battery-powered devices, LCD bias supplies, and LED drivers.
These features make it a versatile choice for boosting voltage in various electronic applications.
1. Type: It is a switch-mode boost converter.
2. Input Voltage: Operates from a low input voltage, typically 1.2V to 15V.
3. Output Voltage: Capable of delivering output voltages up to 34V.
4. Switching Frequency: Offers a fixed switching frequency of 1.2MHz, allowing for the use of small external components.
5. Efficiency: Designed for high efficiency, often above 80% at moderate loads.
6. Packages: Comes in a compact SOT-23-5 package, making it suitable for space-constrained applications.
7. Load Current: Can provide output currents up to 2A, depending on the input voltage and external components used.
8. Protection Features: Includes thermal shutdown and current limiting for enhanced reliability.
9. Applications: Suitable for applications such as battery-powered devices, LCD bias supplies, and LED drivers.
These features make it a versatile choice for boosting voltage in various electronic applications.
Pinout
The LT1931IS5#TRPBF is a step-up DC/DC converter from Analog Devices, specifically designed for applications requiring low power and space efficiency. It is housed in a 5-pin SOT-23 package. The pin functions are as follows:
1. SW (Pin 1): Switch Pin. It is the drain of the internal power MOSFET, connected to the inductor and catch diode.
2. GND (Pin 2): Ground. This is the ground reference for the device.
3. FB (Pin 3): Feedback Pin. Connects to an external resistor divider to set the output voltage.
4. SHDN (Pin 4): Shutdown Pin. A low signal on this pin puts the device in shutdown mode, reducing power consumption.
5. VIN (Pin 5): Input Supply Pin. This is where the input voltage is applied.
The LT1931 is well-suited for applications like small, portable electronic devices, providing efficient power conversion while minimizing board space.
1. SW (Pin 1): Switch Pin. It is the drain of the internal power MOSFET, connected to the inductor and catch diode.
2. GND (Pin 2): Ground. This is the ground reference for the device.
3. FB (Pin 3): Feedback Pin. Connects to an external resistor divider to set the output voltage.
4. SHDN (Pin 4): Shutdown Pin. A low signal on this pin puts the device in shutdown mode, reducing power consumption.
5. VIN (Pin 5): Input Supply Pin. This is where the input voltage is applied.
The LT1931 is well-suited for applications like small, portable electronic devices, providing efficient power conversion while minimizing board space.
Manufacturer
The LT1931IS5#TRPBF is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that designs and manufactures a broad range of analog, mixed-signal, and digital signal processing integrated circuits. The company serves various sectors, including industrial, automotive, communications, healthcare, and consumer electronics, providing solutions for complex engineering challenges. Known for its high-performance analog technologies, Analog Devices is a key player in the electronics industry, offering products that are integral to the functioning of diverse electronic systems.
Application
The LT1931IS5#TRPBF is a high-efficiency, step-up DC/DC converter integrated circuit. Its application areas include powering small, portable electronic devices, LCD bias supplies, OLED displays, and white LED drivers. It is also suitable for battery-powered devices that require efficient voltage conversion, such as handheld instruments, digital cameras, and wireless communication equipment. The IC's compact size and ability to operate with low input voltages make it ideal for space-constrained applications. Additionally, it can be used in automotive electronics and industrial sensors where reliable voltage conversion is required.
Package
The LT1931IS5#TRPBF is a switch mode DC-DC converter from Analog Devices, packaged in a 5-lead SOT-23 (SOT-23-5) package.
