規格
| 屬性 | 價值 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Boost, Flyback, SEPIC |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 2.97V ~ 60V |
| Frequency-Switching | 100kHz ~ 2.2MHz |
| DutyCycle(Max) | 93% |
| SynchronousRectifier | No |
| ClockSync | No |
| ControlFeatures | Current Limit, Enable, Frequency Control, Power Good, Soft Start |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 12-WFDFN Exposed Pad |
概述
Description
The LM51561DSSR is a part of Texas Instruments' family of boost controllers. It is a high-performance, wide input voltage range synchronous boost controller designed for DC-DC conversion applications. Key features include a wide input voltage range from 3.5V to 42V, making it suitable for automotive and industrial applications where voltage fluctuations are common. The device integrates synchronous rectification to enhance efficiency and reduce the size of external components.
The LM51561DSSR offers programmable switching frequency, allowing designers to optimize the trade-off between efficiency and component size. It also includes advanced protection features such as over-current protection, undervoltage lockout, and thermal shutdown to ensure robust performance under various conditions. The device supports both fixed-frequency and pulse-frequency modulation (PFM) modes, facilitating efficient power management across different load conditions.
With its compact design and versatility, the LM51561DSSR is ideal for applications requiring efficient power conversion with minimal electromagnetic interference (EMI). Its efficiency and reliability make it a preferred choice in automotive, industrial, and consumer electronics sectors.
The LM51561DSSR offers programmable switching frequency, allowing designers to optimize the trade-off between efficiency and component size. It also includes advanced protection features such as over-current protection, undervoltage lockout, and thermal shutdown to ensure robust performance under various conditions. The device supports both fixed-frequency and pulse-frequency modulation (PFM) modes, facilitating efficient power management across different load conditions.
With its compact design and versatility, the LM51561DSSR is ideal for applications requiring efficient power conversion with minimal electromagnetic interference (EMI). Its efficiency and reliability make it a preferred choice in automotive, industrial, and consumer electronics sectors.
Equivalent
The LM51561DSSR is a synchronous boost controller by Texas Instruments. Equivalent products include:
1. LT3757 by Analog Devices: A boost/inverter controller with wide input range.
2. MAX1771 by Maxim Integrated: A high-efficiency, step-up DC-DC controller.
3. NCP3063 by ON Semiconductor: A step-up/step-down/inverting switching regulator.
These alternatives offer similar functionality in terms of performance and application, but specifications should be checked for compatibility with your specific requirements.
1. LT3757 by Analog Devices: A boost/inverter controller with wide input range.
2. MAX1771 by Maxim Integrated: A high-efficiency, step-up DC-DC controller.
3. NCP3063 by ON Semiconductor: A step-up/step-down/inverting switching regulator.
These alternatives offer similar functionality in terms of performance and application, but specifications should be checked for compatibility with your specific requirements.
Features
The LM51561DSSR is a synchronous boost controller designed for a wide range of power conversion applications. Key features include:
1. Wide Input Voltage Range: It supports a broad input voltage range, making it versatile for various power supply configurations.
2. Synchronous Operation: The controller utilizes synchronous rectification to enhance efficiency by reducing conduction losses.
3. Programmable Switching Frequency: It offers the flexibility to set the switching frequency between 100 kHz and 2.2 MHz, allowing optimization for efficiency or size.
4. Skip Mode for Light Load Efficiency: The part includes a skip mode to improve efficiency during light load conditions.
5. Adjustable Output Voltage: It provides configurable output voltage via external resistors, catering to different application needs.
6. Protection Features: Built-in protections such as Over-Voltage Protection (OVP), Under-Voltage Lockout (UVLO), and Thermal Shutdown ensure system reliability.
7. Integrated MOSFET Driver: It includes an integrated driver for external N-channel MOSFETs, simplifying design and reducing component count.
8. Small Footprint: The device is available in a compact package, aiding in minimizing board space.
These features make the LM51561DSSR suitable for applications requiring efficient step-up voltage conversion.
1. Wide Input Voltage Range: It supports a broad input voltage range, making it versatile for various power supply configurations.
2. Synchronous Operation: The controller utilizes synchronous rectification to enhance efficiency by reducing conduction losses.
3. Programmable Switching Frequency: It offers the flexibility to set the switching frequency between 100 kHz and 2.2 MHz, allowing optimization for efficiency or size.
4. Skip Mode for Light Load Efficiency: The part includes a skip mode to improve efficiency during light load conditions.
5. Adjustable Output Voltage: It provides configurable output voltage via external resistors, catering to different application needs.
6. Protection Features: Built-in protections such as Over-Voltage Protection (OVP), Under-Voltage Lockout (UVLO), and Thermal Shutdown ensure system reliability.
7. Integrated MOSFET Driver: It includes an integrated driver for external N-channel MOSFETs, simplifying design and reducing component count.
8. Small Footprint: The device is available in a compact package, aiding in minimizing board space.
These features make the LM51561DSSR suitable for applications requiring efficient step-up voltage conversion.
Pinout
The LM51561DSSR is a 16-pin device, designed for high-efficiency synchronous boost, SEPIC, and flyback DC-DC converter applications. Here is a brief overview of its pin functions:
1. VIN: Power supply input.
2. EN/UVLO: Enable and under-voltage lockout input.
3. RT/SYNC: Sets the switching frequency or synchronizes to an external clock.
4. COMP: Compensation network connection for the control loop.
5. AGND: Analog ground reference.
6. FB: Feedback input for output voltage regulation.
7. SS/TR: Soft-start or tracking input.
8. BIAS: Auxiliary bias supply input.
9. CS: Current sense input.
10. SW: Switch node for the power stage.
11. PGND: Power ground reference.
12. VCC: Internal regulator output.
13. BOOT: Bootstrap capacitor connection for high-side gate drive.
14. HO: High-side gate driver output.
15. LO: Low-side gate driver output.
16. NC: No connection (reserved, do not connect).
This IC is used to manage and regulate power conversion efficiently in various electronic applications.
1. VIN: Power supply input.
2. EN/UVLO: Enable and under-voltage lockout input.
3. RT/SYNC: Sets the switching frequency or synchronizes to an external clock.
4. COMP: Compensation network connection for the control loop.
5. AGND: Analog ground reference.
6. FB: Feedback input for output voltage regulation.
7. SS/TR: Soft-start or tracking input.
8. BIAS: Auxiliary bias supply input.
9. CS: Current sense input.
10. SW: Switch node for the power stage.
11. PGND: Power ground reference.
12. VCC: Internal regulator output.
13. BOOT: Bootstrap capacitor connection for high-side gate drive.
14. HO: High-side gate driver output.
15. LO: Low-side gate driver output.
16. NC: No connection (reserved, do not connect).
This IC is used to manage and regulate power conversion efficiently in various electronic applications.
Manufacturer
The LM51561DSSR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components and integrated circuits. TI is known for its focus on analog and embedded processing products, providing solutions for various applications in industries such as automotive, industrial, consumer electronics, and communications. The company is headquartered in Dallas, Texas, and has a significant presence worldwide.
Application
The LM51561DSSR is a highly versatile synchronous boost controller from Texas Instruments, suitable for a range of applications. Its primary application areas include automotive systems, where it can manage power in start-stop systems, battery-powered applications, and automotive LED lighting. It's also used in industrial settings, such as in power supply systems and communication equipment, due to its high efficiency and wide input voltage range. Additionally, the LM51561DSSR is employed in consumer electronics for portable device charging and power management solutions. Its capabilities make it ideal for situations requiring efficient voltage boosting and regulation.
Package
The LM51561DSSR is a DC-DC boost controller from Texas Instruments, and it comes in a WSON (VSON) package type with a 10-pin configuration.
