Texas Instruments LM2575S-ADJ-TI
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $13.96 | $13.96 |
| 15+ | $3.21 | $48.15 |
| 25+ | $3.14 | $78.50 |
| 50+ | $2.97 | $148.50 |
| 100+ | $2.62 | $262.00 |
| N+ | $0.52 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | SIMPLE SWITCHER® |
| Packaging | Bulk | |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 4V |
| Voltage - Input (Max) | 40V |
| Voltage - Output (Min/Fixed) | 1.23V |
| Voltage - Output (Max) | 37V |
| Current - Output | 1A |
| Frequency - Switching | 52kHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA |
| Supplier Device Package | DDPAK/TO-263-5 |
The LM2575S-ADJ-TI from Texas Instruments is a monolithic integrated circuit that provides a highly efficient step-down (buck) switching regulator. It accepts a wide input voltage from 4V to 40V and delivers a 1A output current with an adjustable output voltage from 1.23V to 37V. Operating at a fixed 52kHz switching frequency, it requires only a minimum number of external components. Its robust TO-263 package ensures excellent thermal performance, making it ideal for a wide range of applications including industrial control, automotive systems, and distributed power architectures.
- Wide Input Voltage Range (4V-40V): Handles unregulated supplies and automotive transients without external protection.
- High Efficiency Operation: Switching regulator design reduces power dissipation compared to linear regulators, especially at higher voltage differentials.
- Simple External Circuitry: Fixed 52kHz frequency and internal compensation minimize the number of external components, simplifying design and reducing cost.
- Robust TO-263 Package: Excellent thermal resistance allows reliable operation at full 1A load in high-temperature environments.
Battery-Powered Industrial Equipment
The wide 4V to 40V input range allows operation from multi-cell batteries or unregulated supplies. The 52kHz fixed frequency simplifies EMI filtering, making it suitable for noisy industrial environments.
Automotive Power Supplies
With a 40V maximum input, this buck converter can handle load-dump transients in 12V automotive systems. The 1A output is ideal for powering sensors, microcontrollers, and small actuators.
Distributed Power Architectures
Use it as a pre-regulator to step down a 24V or 36V bus to an intermediate voltage. The adjustable output down to 1.23V provides flexibility for various logic and analog rails.
Telecom and Networking Equipment
Its robust TO-263 package dissipates heat effectively in 48V telecom systems (via a 24V tap). The simple design requires minimal external components, reducing board space.
Offline Power Supplies
When paired with a simple rectifier, the 40V input capability allows direct conversion from low-voltage AC adapters, providing a regulated DC rail for household appliances.
Test and Measurement Instruments
The adjustable output and 1A current capability make it suitable for bench power supplies or as a local rail in precision instruments where efficiency and reliability are key.
- Q: What type of converter is the LM2575S-ADJ-TI?
- A: It is a step-down (Buck) DC-DC converter.
- Q: What is the input voltage range?
- A: The input voltage range is 4V to 40V.
- Q: What is the output voltage range?
- A: The adjustable output voltage range is 1.23V to 37V.
- Q: What is the maximum output current?
- A: The maximum output current is 1A.
- Q: What is the switching frequency?
- A: The switching frequency is fixed at 52kHz.
- Q: What package is available?
- A: It comes in a TO-263-6 (D2PAK) package with 5 leads plus tab.
LM2575S-ADJ-TI.pdf
- Q: What type of converter is the LM2575S-ADJ-TI?
- A: It is a step-down (Buck) DC-DC converter.
- Q: What is the input voltage range?
- A: The input voltage range is 4V to 40V.
- Q: What is the output voltage range?
- A: The adjustable output voltage range is 1.23V to 37V.
- Q: What is the maximum output current?
- A: The maximum output current is 1A.
- Q: What is the switching frequency?
- A: The switching frequency is fixed at 52kHz.
- Q: What package is available?
- A: It comes in a TO-263-6 (D2PAK) package with 5 leads plus tab.
