사양
| 속성 | 가치 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Not For New Designs |
| OutputType | Transistor Driver |
| Function | Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 6V ~ 100V |
| Frequency-Switching | 200kHz, 535kHz |
| SynchronousRectifier | Yes |
| ClockSync | Yes |
| ControlFeatures | Enable, Frequency Control, Ramp, Soft Start |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 20-PowerTSSOP (0.173, 4.40mm Width) |
개요
Description
The LM5116MHX is a high-performance, synchronous buck controller designed for step-down voltage regulation in power management applications. Manufactured by Texas Instruments, it is suitable for high-power, wide-voltage range applications, making it ideal for industrial, automotive, and communication systems. The device supports an input voltage range of 6V to 100V and can deliver output currents exceeding 20A, depending on the external components used.
Key features include a robust synchronous rectification approach, which enhances efficiency by minimizing power losses. It also offers programmable switching frequency, adjustable current limit, and voltage tracking capability. The LM5116MHX incorporates a high-speed gate driver to enhance the performance of external MOSFETs, ensuring efficient power conversion.
Protection features such as over-current protection, thermal shutdown, and input under-voltage lockout ensure reliable and safe operation under various conditions. The IC comes in a thermally enhanced HTSSOP-20 package, which aids in managing heat dissipation in high-power applications. Overall, the LM5116MHX is a versatile and reliable choice for demanding power supply designs.
Key features include a robust synchronous rectification approach, which enhances efficiency by minimizing power losses. It also offers programmable switching frequency, adjustable current limit, and voltage tracking capability. The LM5116MHX incorporates a high-speed gate driver to enhance the performance of external MOSFETs, ensuring efficient power conversion.
Protection features such as over-current protection, thermal shutdown, and input under-voltage lockout ensure reliable and safe operation under various conditions. The IC comes in a thermally enhanced HTSSOP-20 package, which aids in managing heat dissipation in high-power applications. Overall, the LM5116MHX is a versatile and reliable choice for demanding power supply designs.
Equivalent
The LM5116MHX is a synchronous buck controller from Texas Instruments. Equivalent products from other manufacturers may include:
1. LT3845 from Analog Devices: A high-voltage buck controller with similar features.
2. UC3843 from STMicroelectronics: A current-mode PWM controller, although it might need additional components for full equivalence.
3. MAX15004 from Maxim Integrated: A high-voltage, current-mode PWM controller for similar applications.
When choosing an equivalent, ensure compatibility with your specific application requirements.
1. LT3845 from Analog Devices: A high-voltage buck controller with similar features.
2. UC3843 from STMicroelectronics: A current-mode PWM controller, although it might need additional components for full equivalence.
3. MAX15004 from Maxim Integrated: A high-voltage, current-mode PWM controller for similar applications.
When choosing an equivalent, ensure compatibility with your specific application requirements.
Features
The LM5116MHX is a high-performance synchronous buck controller designed for use in step-down voltage regulator applications. Key features include:
1. Wide Input Voltage Range: It supports an input voltage range from 6V to 100V, making it suitable for various power supply systems.
2. Adjustable Switching Frequency: The device allows for an adjustable switching frequency ranging from 50 kHz to 1 MHz, providing flexibility in efficiency and size trade-offs.
3. High Efficiency: It supports synchronous rectification, which improves efficiency by reducing diode losses.
4. Current Mode Control: The LM5116MHX employs current mode control for fast transient response and simplified loop compensation.
5. Programmable Output Voltage: The output voltage can be set using an external resistor divider.
6. Integrated Protection Features: It includes overvoltage protection, undervoltage lockout, cycle-by-cycle current limiting, and thermal shutdown, enhancing system reliability.
7. Low Shutdown Current: The device has a low shutdown current of 10 µA, which helps in reducing power consumption when not in use.
These features make the LM5116MHX an ideal choice for high-voltage, high-power applications that require efficient and reliable power conversion.
1. Wide Input Voltage Range: It supports an input voltage range from 6V to 100V, making it suitable for various power supply systems.
2. Adjustable Switching Frequency: The device allows for an adjustable switching frequency ranging from 50 kHz to 1 MHz, providing flexibility in efficiency and size trade-offs.
3. High Efficiency: It supports synchronous rectification, which improves efficiency by reducing diode losses.
4. Current Mode Control: The LM5116MHX employs current mode control for fast transient response and simplified loop compensation.
5. Programmable Output Voltage: The output voltage can be set using an external resistor divider.
6. Integrated Protection Features: It includes overvoltage protection, undervoltage lockout, cycle-by-cycle current limiting, and thermal shutdown, enhancing system reliability.
7. Low Shutdown Current: The device has a low shutdown current of 10 µA, which helps in reducing power consumption when not in use.
These features make the LM5116MHX an ideal choice for high-voltage, high-power applications that require efficient and reliable power conversion.
Pinout
The LM5116MHX is a high-voltage, synchronous buck controller from Texas Instruments, designed for applications requiring step-down DC-DC conversion. It comes in a 20-pin HTSSOP (PowerPAD) package. The pin functions are as follows:
1. SW (Switch Node): Connects to the switching node.
2. BOOT (Bootstrap capacitor): Supplies the gate drive voltage to the high-side FET.
3. HG (High-side Gate Drive): Drives the gate of the high-side N-channel MOSFET.
4. CB (Compensation): Compensation for the control loop.
5. FB (Feedback): Connects to the output voltage divider.
6. VCC (Internal LDO Output): Supplies power to internal circuits.
7. PGND (Power Ground): Ground return for power circuits.
8. LG (Low-side Gate Drive): Drives the gate of the low-side N-channel MOSFET.
9. VIN (Input Voltage): Supplies power to the IC.
10. UVLO (Undervoltage Lockout): Sets the undervoltage lockout threshold.
11. RES (Restart Timer): Sets the timer for hiccup mode current limit restart.
12. COMP (Compensation): Error amplifier output for loop compensation.
13. CS (Current Sense): Connects to the current sense resistor.
14. RT (Timing Resistor): Sets the switching frequency.
15. SYNC (Synchronization): Synchronizes the oscillator to an external clock.
16. EN (Enable): Enables or disables the controller.
17. SS (Soft Start): Controls the soft-start timing.
18. HO (Holdoff): Configures slope compensation.
19. N/C (No Connection): Not internally connected.
20. AGND (Analog Ground): Ground return for control circuits.
These pins facilitate the controller's operation in various power supply designs.
1. SW (Switch Node): Connects to the switching node.
2. BOOT (Bootstrap capacitor): Supplies the gate drive voltage to the high-side FET.
3. HG (High-side Gate Drive): Drives the gate of the high-side N-channel MOSFET.
4. CB (Compensation): Compensation for the control loop.
5. FB (Feedback): Connects to the output voltage divider.
6. VCC (Internal LDO Output): Supplies power to internal circuits.
7. PGND (Power Ground): Ground return for power circuits.
8. LG (Low-side Gate Drive): Drives the gate of the low-side N-channel MOSFET.
9. VIN (Input Voltage): Supplies power to the IC.
10. UVLO (Undervoltage Lockout): Sets the undervoltage lockout threshold.
11. RES (Restart Timer): Sets the timer for hiccup mode current limit restart.
12. COMP (Compensation): Error amplifier output for loop compensation.
13. CS (Current Sense): Connects to the current sense resistor.
14. RT (Timing Resistor): Sets the switching frequency.
15. SYNC (Synchronization): Synchronizes the oscillator to an external clock.
16. EN (Enable): Enables or disables the controller.
17. SS (Soft Start): Controls the soft-start timing.
18. HO (Holdoff): Configures slope compensation.
19. N/C (No Connection): Not internally connected.
20. AGND (Analog Ground): Ground return for control circuits.
These pins facilitate the controller's operation in various power supply designs.
Manufacturer
The LM5116MHX is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide array of electronic components. They are well-known for their development and manufacturing of analog and embedded processing chips, which are utilized in numerous applications, including automotive, industrial, consumer electronics, and communications. TI is a leader in the semiconductor industry and focuses on innovation and technology advancement to address the needs of various electronics markets.
Application
The LM5116MHX is a synchronous buck controller designed for high-performance applications. It is commonly used in areas such as telecommunications, industrial power systems, and automotive electronics. The device is suitable for applications requiring high input voltage ranges and efficient step-down voltage regulation. It supports a wide range of output voltages, making it ideal for point-of-load converters, distributed power systems, and high-power DC-DC conversion tasks. Its versatility and robustness make it well-suited for use in complex power architectures where precise voltage control and efficiency are crucial.
Package
The LM5116MHX is a synchronous buck controller from Texas Instruments, and it comes in a 20-pin HTSSOP (Heat-Sink Thin Shrink Small Outline Package) type package. This package type is designed to efficiently dissipate heat, making it suitable for high-power applications.
