Texas Instruments LM2575HVT-12/LB03
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $18.04 | $18.04 |
| 15+ | $5.16 | $77.40 |
| 25+ | $5.05 | $126.25 |
| 50+ | $4.77 | $238.50 |
| 100+ | $4.21 | $421.00 |
| N+ | $0.84 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | SIMPLE SWITCHER® |
| Packaging | Tube | |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Fixed |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4V |
| Voltage - Input (Max) | 60V |
| Voltage - Output (Min/Fixed) | 12V |
| Voltage - Output (Max) | - |
| Current - Output | 1A |
| Frequency - Switching | 52kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | TO-220-5 Formed Leads |
| Supplier Device Package | TO-220-5 |
The LM2575HVT-12/LB03 from National Semiconductor is a robust, simple step-down (Buck) DC-DC converter designed for high-voltage applications. It accepts a wide input voltage from 4V to 60V and provides a fixed 12V output with up to 1A of load current. Operating at a low 52kHz switching frequency, it offers excellent efficiency and low noise, making it suitable for industrial and automotive environments. The TO-220-5 package with formed leads ensures easy mounting and good thermal performance. This converter is a reliable choice for systems requiring a rugged, high-voltage input to 12V conversion.
- Wide Input Voltage Range (4V-60V): Handles high-voltage transients and supports 24V, 48V, and 60V systems without external protection.
- Simple, Robust Design: Requires minimal external components (inductor, diode, capacitors), simplifying design and improving reliability.
- Fixed 12V Output: Ideal for powering standard 12V loads, relays, and industrial logic.
- 1A Output Current: Sufficient for a wide range of sensors, controllers, and auxiliary loads.
- Low 52kHz Switching Frequency: Reduces EMI and allows for the use of low-cost, readily available inductors.
Industrial Power Supplies
With a wide 4V to 60V input range, the LM2575HVT-12 is ideal for industrial control systems operating from 24V or 48V rails, providing a regulated 12V supply for sensors, relays, and logic circuits.
Automotive Battery-Powered Systems
In 12V and 24V automotive electrical systems, this converter can step down higher battery voltages (e.g., 24V truck systems) to a stable 12V for aftermarket electronics, infotainment, and lighting.
Telecom and Networking Equipment
For telecom infrastructure powered by 48V backplanes, the LM2575HVT-12 efficiently converts to 12V for line cards, switches, and small cell equipment, simplifying power distribution.
HVAC and Building Automation
In HVAC controllers and building management systems, this buck converter provides a reliable 12V rail from 24V AC/DC supplies, powering microcontrollers, motor drivers, and communication interfaces.
Offline and High-Voltage Applications
The 60V maximum input makes it suitable for applications with unregulated rectified AC supplies (e.g., 48V nominal) where voltage spikes can occur, providing robust protection.
Battery Chargers and Power Tools
For high-voltage battery packs (up to 60V) in power tools or e-bikes, this converter can generate a regulated 12V auxiliary supply for control electronics and displays.
- Q: What type of converter is the LM2575HVT-12/LB03?
- A: It is a Buck (step-down) DC-DC converter.
- Q: What is the input voltage range?
- A: The input voltage range is from 4V to 60V.
- Q: What is the output voltage?
- A: It provides a fixed output voltage of 12V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of output current.
- Q: What is the switching frequency?
- A: The switching frequency is 52kHz.
- Q: What package is available?
- A: It comes in a TO-220-5 Formed Leads package.
LM2575HVT-12/LB03.pdf
- Q: What type of converter is the LM2575HVT-12/LB03?
- A: It is a Buck (step-down) DC-DC converter.
- Q: What is the input voltage range?
- A: The input voltage range is from 4V to 60V.
- Q: What is the output voltage?
- A: It provides a fixed output voltage of 12V.
- Q: What is the maximum output current?
- A: It can deliver up to 1A of output current.
- Q: What is the switching frequency?
- A: The switching frequency is 52kHz.
- Q: What package is available?
- A: It comes in a TO-220-5 Formed Leads package.
