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LM34936RHFR
.5-55VIN 4 SWITCH BUCK-BOOST CON
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- 製造商。 部分 #LM34936RHFR
- 包 VQFN-28
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- 有現貨的4201
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規格
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck-Boost |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 4.2V ~ 30V |
| Frequency-Switching | 100kHz ~ 600kHz |
| DutyCycle(Max) | 100% |
| SynchronousRectifier | Yes |
| ClockSync | Yes |
| ControlFeatures | Current Limit, Enable, Frequency Control, Power Good, Soft Start |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 28-VFQFN Exposed Pad |
概述
Description
The LM34936RHFR is a synchronous boost controller designed by Texas Instruments. It is used to step up voltage efficiently in various electronic applications. Key features include its wide input voltage range, which allows it to handle a variety of power sources. The device integrates advanced control techniques to achieve high efficiency and stable operation over a range of conditions.
It offers synchronous rectification, minimizing losses associated with diode rectification, and includes features like soft-start, adjustable switching frequency, and programmable current limit. These features enhance the flexibility and reliability of the boost converter design. The controller is also equipped with protection mechanisms such as undervoltage lockout, overtemperature shutdown, and short-circuit protection to ensure safe operation.
The LM34936RHFR is typically used in applications requiring efficient power conversion, such as battery-powered devices, automotive systems, and industrial equipment. Due to its compact VQFN package, it is suitable for space-constrained designs. Overall, the LM34936RHFR provides a robust solution for designers looking to implement step-up voltage regulation with high efficiency and reliability.
It offers synchronous rectification, minimizing losses associated with diode rectification, and includes features like soft-start, adjustable switching frequency, and programmable current limit. These features enhance the flexibility and reliability of the boost converter design. The controller is also equipped with protection mechanisms such as undervoltage lockout, overtemperature shutdown, and short-circuit protection to ensure safe operation.
The LM34936RHFR is typically used in applications requiring efficient power conversion, such as battery-powered devices, automotive systems, and industrial equipment. Due to its compact VQFN package, it is suitable for space-constrained designs. Overall, the LM34936RHFR provides a robust solution for designers looking to implement step-up voltage regulation with high efficiency and reliability.
Features
The LM34936RHFR is a high-performance step-down (buck) controller from Texas Instruments, designed for applications requiring high efficiency and reliability. Key features include:
1. Wide Input Voltage Range: Supports a broad input voltage range, making it versatile for various power supply applications.
2. Synchronous Operation: Utilizes synchronous rectification to improve efficiency by reducing power losses.
3. Adjustable Switching Frequency: Allows users to set the switching frequency between 100 kHz and 1 MHz, optimizing trade-offs between efficiency and component size.
4. Programmable Soft Start: Offers a programmable soft-start feature to limit inrush currents during startup.
5. Integrated MOSFET Drivers: Includes integrated high-side and low-side MOSFET drivers for ease of design and improved performance.
6. Current Mode Control: Employs peak current mode control for fast transient response and ease of loop compensation.
7. Protection Features: Provides comprehensive protection features, including undervoltage lockout, overcurrent protection, and thermal shutdown.
8. Power Good Indicator: Features a power-good output to indicate the status of the output voltage.
9. Compact Package: Available in a thermally enhanced package for efficient heat dissipation in space-constrained designs.
These features make the LM34936RHFR suitable for industrial, telecommunications, and computing applications where efficient power conversion is crucial.
1. Wide Input Voltage Range: Supports a broad input voltage range, making it versatile for various power supply applications.
2. Synchronous Operation: Utilizes synchronous rectification to improve efficiency by reducing power losses.
3. Adjustable Switching Frequency: Allows users to set the switching frequency between 100 kHz and 1 MHz, optimizing trade-offs between efficiency and component size.
4. Programmable Soft Start: Offers a programmable soft-start feature to limit inrush currents during startup.
5. Integrated MOSFET Drivers: Includes integrated high-side and low-side MOSFET drivers for ease of design and improved performance.
6. Current Mode Control: Employs peak current mode control for fast transient response and ease of loop compensation.
7. Protection Features: Provides comprehensive protection features, including undervoltage lockout, overcurrent protection, and thermal shutdown.
8. Power Good Indicator: Features a power-good output to indicate the status of the output voltage.
9. Compact Package: Available in a thermally enhanced package for efficient heat dissipation in space-constrained designs.
These features make the LM34936RHFR suitable for industrial, telecommunications, and computing applications where efficient power conversion is crucial.
Package
The LM34936RHFR is a step-down controller from Texas Instruments. It comes in a VQFN (Very Thin Quad Flat No-lead) package, specifically a 28-pin package with a thermally enhanced PowerPAD. The package code is RHF, which stands for the particular footprint and dimensions of the VQFN format.
Pinout
The LM34936RHFR is a synchronous buck-boost controller from Texas Instruments. It typically comes in a 32-pin VQFN (Very Thin Quad Flat No Lead) package. This controller is designed for DC-DC conversion, allowing it to efficiently handle input voltages that are higher, lower, or equal to the output voltage, making it versatile for various power supply designs.
Key functions of the LM34936RHFR include:
1. Buck-Boost Operation: Seamlessly transitions between buck and boost modes based on input and output voltage conditions.
2. High Efficiency: Synchronous rectification and adaptive switching for improved efficiency.
3. Input and Output Range: Wide input voltage range and adjustable output voltage, making it suitable for a variety of applications.
4. Protection Features: Includes overvoltage, undervoltage, overcurrent, and thermal protection to enhance system reliability.
5. Frequency Synchronization: Allows for synchronization with an external clock for reduced EMI.
This controller is commonly used in applications like telecommunications, industrial equipment, and automotive systems where reliable power conversion is crucial.
Key functions of the LM34936RHFR include:
1. Buck-Boost Operation: Seamlessly transitions between buck and boost modes based on input and output voltage conditions.
2. High Efficiency: Synchronous rectification and adaptive switching for improved efficiency.
3. Input and Output Range: Wide input voltage range and adjustable output voltage, making it suitable for a variety of applications.
4. Protection Features: Includes overvoltage, undervoltage, overcurrent, and thermal protection to enhance system reliability.
5. Frequency Synchronization: Allows for synchronization with an external clock for reduced EMI.
This controller is commonly used in applications like telecommunications, industrial equipment, and automotive systems where reliable power conversion is crucial.
Manufacturer
The LM34936RHFR is manufactured by Texas Instruments Incorporated (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of analog and embedded processing chips. The company is known for its innovation in the electronics industry, providing solutions that help in the development of advanced electronic systems. TI's products are used in various applications, including industrial, automotive, personal electronics, communications equipment, and enterprise systems.
Application
The LM34936RHFR is a synchronous buck controller designed for applications requiring high-efficiency DC-DC conversion. It is commonly used in areas such as telecommunications, industrial power supplies, automotive systems, and distributed power systems. Its features, including high voltage operation, low standby current, and adjustable switching frequency, make it suitable for powering microprocessors, DSPs, FPGAs, and other digital circuits requiring stable and efficient power management.
Equivalent
The LM34936RHFR is a buck-boost controller from Texas Instruments. Equivalent products may not match all specifications but serve similar purposes. Possible alternatives include the LT3790 from Analog Devices, the MAX17599 from Maxim Integrated, and the TPS55288 from Texas Instruments itself. Always compare specific features like input voltage range, output current, and control methods to ensure compatibility with your application.
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