Overview
The LM5117PSQE/NOPB, produced by Texas Instruments, is a wide input range synchronous buck controller designed for high-efficiency DC-DC conversion. This controller operates over a broad input voltage range of 5.5 V to 65 V, making it suitable for various power management applications. It features a current mode control architecture and includes an analog current monitor for precise output current measurement. The LM5117 is available in a 24-pin WQFN (4x4) package and is RoHS compliant.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 5.5 V to 65 V |
| Output Voltage Range | 0.8 V to VIN |
| Operating Frequency | 50 kHz to 750 kHz |
| Peak Gate Drive Current | 3.3 A |
| Package Type | 24-WQFN (4x4) |
| Thermal Shutdown | Yes |
| Current Limit | Programmable |
| Soft-Start and Tracking | Programmable |
| Overcurrent Protection | Hiccup Mode |
| Analog Current Monitor | Yes |
Key Features
- Wide Input Range: Operates from 5.5 V to 65 V, allowing for use in a variety of high-voltage applications.
- Current Mode Control: Provides reliable control of very small duty cycles necessary in high input voltage applications.
- Adaptive Dead-Time Output Driver Control: Enhances efficiency and reduces switching losses.
- Programmable Output Voltage: From 0.8 V, allowing for flexible output voltage settings.
- Analog Current Monitor: Provides average output current information for precise monitoring.
- Diode Emulation Mode: Enables discontinuous mode operation for improved efficiency at light load conditions.
- Thermal Shutdown and Overcurrent Protection: Includes hiccup mode overcurrent protection and thermal shutdown for robust reliability.
- Programmable Soft-Start and Tracking: Allows for controlled startup and tracking of the output voltage.
Applications
The LM5117PSQE/NOPB is suitable for a wide range of applications, including:
- Industrial Power Supplies: High-voltage DC-DC conversion in industrial settings.
- Automotive Systems: Power management in automotive electronics where high input voltage ranges are common.
- Telecommunications Equipment: Efficient power conversion in telecom infrastructure.
- Server and Data Center Power Supplies: High-efficiency power management in data center environments.
Q & A
- What is the input voltage range of the LM5117PSQE/NOPB?
The input voltage range is from 5.5 V to 65 V. - What is the output voltage range of the LM5117PSQE/NOPB?
The output voltage range is from 0.8 V to VIN. - What is the operating frequency range of the LM5117PSQE/NOPB?
The operating frequency range is from 50 kHz to 750 kHz. - Does the LM5117PSQE/NOPB have overcurrent protection?
Yes, it includes hiccup mode overcurrent protection. - What package type is the LM5117PSQE/NOPB available in?
The LM5117PSQE/NOPB is available in a 24-pin WQFN (4x4) package. - Does the LM5117PSQE/NOPB have thermal shutdown?
Yes, it includes thermal shutdown for robust reliability. - Can the output voltage be programmed?
Yes, the output voltage is programmable from 0.8 V. - What is the purpose of the diode emulation mode in the LM5117PSQE/NOPB?
The diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions. - Does the LM5117PSQE/NOPB have an analog current monitor?
Yes, it includes an analog current monitor for precise output current measurement. - Can the soft-start and tracking be programmed?
Yes, the soft-start and tracking can be programmed.
