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LM5017MRX
+BOMSwitching Voltage Regulators STEP-DOWN REGULATOR - 100V, 600MA CONSTANT ON-TIME SYNCHRONOUS BUCK REGULATOR
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Nhà sản xuấtTexas Dụng cụ
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Ông. Phần #LM5017MRX
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Description
Key features of the LM5017MRX include a 600 mA continuous output current capability, integrated high-side and low-side power MOSFETs, and a constant on-time control mode. This control mode ensures fast transient response and simplifies loop compensation, offering high efficiency over a wide load range. It also includes features like internal soft-start, thermal shutdown, and current limit protection.
The LM5017MRX is encapsulated in a thermally enhanced, 8-pin VSSOP package for efficient heat dissipation. Its compact size and high performance make it an excellent choice for designers looking to implement efficient, reliable DC-DC conversion solutions.
Equivalent
1. LM5018 (Texas Instruments) – Offers similar wide input voltage range and features.
2. LT3999 (Analog Devices) – Provides similar high voltage and functionality.
3. MIC28512-2YFL (Microchip Technology) – Another option with comparable specifications.
4. LM5160 (Texas Instruments) – Offers similar buck converter functionality with a wide voltage range.
Always check the specific requirements and datasheets to ensure compatibility.
Features
1. Wide Input Voltage Range: Operates from 7.5V to 100V, suitable for a variety of applications.
2. Integrated Power MOSFET: Features a 100V, N-channel MOSFET with a 450 mA peak current limit.
3. Adjustable Output Voltage: Supports output voltages from 1.225V to 100V.
4. High Efficiency: Utilizes a constant on-time (COT) control scheme for excellent efficiency across different loads.
5. Low Quiescent Current: Consumes only 30 μA during operating mode, reducing power loss.
6. Frequency Adjustable: Switching frequency can be set between 50 kHz and 1 MHz for flexibility in design and efficiency.
7. Protection Features: Includes cycle-by-cycle current limiting, thermal shutdown, and an adjustable soft-start.
8. Package: Offered in an 8-pin SO PowerPAD package, enhancing thermal performance.
These features make the LM5017MRX ideal for industrial, automotive, and telecom applications requiring robust and efficient power management solutions.
Pinout
Here is a brief overview of the pin functions:
1. SW (Pin 1): Switch Node - Connects to the inductor and the diode.
2. BST (Pin 2): Boot-Strap - Connects to an external capacitor to supply the high-side gate drive.
3. RCL (Pin 3): Current Limit Resistor - Sets the peak current limit.
4. RT (Pin 4): Timing Resistor - Sets the switching frequency.
5. SGND (Pin 5): Signal Ground - Ground reference for the internal circuit.
6. FB (Pin 6): Feedback - Connects to the output voltage divider to regulate the output voltage.
7. VCC (Pin 7): Internal Regulator Output - Provides power to the internal circuitry.
8. VIN (Pin 8): Input Voltage - Connects to the input power supply.
These pins provide control and feedback for efficient regulation, making the LM5017MRX suitable for various high-voltage applications.
Manufacturer
Application
1. Telecommunications: Powering equipment in telecom infrastructure where high voltage distribution is common.
2. Industrial Automation: Used in factory equipment requiring robust power supplies.
3. Automotive Systems: Suitable for systems that need to convert vehicle battery voltage to lower levels.
4. HVAC Systems: Provides efficient power conversion in heating, ventilation, and air conditioning units.
5. Smart Grid and Metering: Powers devices within advanced metering infrastructure and smart grid technology.
6. LED Lighting: Supplies power for LED drivers in high-voltage applications.
Its wide input voltage range and high efficiency make it versatile for various high-voltage, low-power applications.