Overview
The LM2576HVSX-5.0 from Texas Instruments is a high-efficiency step-down voltage regulator, part of the SIMPLE SWITCHER® family. This device is designed to provide fixed output voltage regulation in high-performance applications. It is capable of delivering up to 3A of DC load current and operates with a wide input voltage range from 4V to 60V. The regulator is available in a compact TO-263-5 package, making it ideal for various power management needs in digital circuits, telecommunications, industrial automation, and more.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4V to 60V | V |
| Output Voltage | Fixed 5.0V | V |
| Maximum Output Current | 3A | A |
| Operating Temperature Range | -40°C to 125°C | °C |
| Switching Frequency | 42 kHz to 63 kHz | kHz |
| Efficiency | Up to 90% | % |
| Package Type | TO-263-5 | |
| Quiescent Current (Typical) | 5 mA | mA |
| Duty Cycle (Maximum) | 98% | % |
Key Features
- High-efficiency step-down voltage regulation with up to 90% efficiency under load.
- Wide input voltage range from 4V to 60V.
- Fixed output voltage of 5.0V with options for adjustable output versions.
- Maximum output current of 3A.
- Thermal shutdown protection to prevent overheating.
- Output over-voltage protection.
- Adjustable switching frequency.
- Low quiescent current of 5 mA (typical).
- Compact TO-263-5 package for easy integration.
Applications
- Power supply for microcontrollers and DSPs.
- Telecommunications equipment.
- Industrial automation systems.
- Automotive electronics.
- Battery-powered devices.
- Networking equipment.
- Consumer electronics.
Q & A
- What is the maximum output current of the LM2576HVSX-5.0?
The maximum output current is rated at 3A.
- Can this IC be used with a higher input voltage than 60V?
No, it is designed to operate within a maximum input voltage of 60V. Exceeding this rating may damage the IC.
- How does thermal shutdown protection work?
Thermal shutdown protection is activated when the chip’s junction temperature exceeds a safe threshold, automatically shutting down the output to prevent damage.
- What is the efficiency of the LM2576HVSX-5.0?
The efficiency can reach up to 90% depending on the load conditions.
- Can this regulator be used for a battery-powered application?
- What is the switching frequency range of the LM2576HVSX-5.0?
The switching frequency ranges from 42 kHz to 63 kHz.
- What type of package does the LM2576HVSX-5.0 come in?
The LM2576HVSX-5.0 comes in a TO-263-5 package.
- Does the LM2576HVSX-5.0 have over-voltage protection?
- Is the LM2576HVSX-5.0 RoHS compliant?
- What are some alternative models to the LM2576HVSX-5.0?
Alternative models include the LM2576-ADJ for adjustable output voltage and the LM2576HVT-ADJ for high voltage adjustable versions.
