LM2575S-15In StockTexas Instruments
LM2575S-15 is a 1A step-down (buck) switching voltage regulator with fixed 15V output. Features 40V max input, 52kHz switching frequency, and internal oscillator. From $1.57 in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 4
- Lifecycle
- OBSOLETE
- Datasheet
- LM2575S-15 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.5715(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 15V output voltage with ±4% accuracy across load and line conditions
- 1A output current capability with internal current limiting for protection
- Wide input voltage range from 18V to 40V for versatile power design
- 52kHz internal oscillator eliminates need for external frequency-setting components
- Can be configured as buck-boost regulator for flexible power conversion applications
- Low standby current and high efficiency switching design reduces power dissipation
Applications
The LM2575S-15 is widely used in industrial power supplies, automotive electronics, and embedded systems requiring a stable 15V regulated output. Its fixed 15V buck topology makes it ideal for powering analog circuits, motor drivers, and relay coils from higher voltage bus rails. The device is also suitable for battery-powered equipment and telecom systems where efficient step-down conversion from 18V-40V sources is required.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Additional Feature | CAN ALSO CONFIGURED AS BUCK BOOST REGULATOR |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 40V |
| Input Voltage-Min | 18V |
| Input Voltage-Nom | 30V |
| JESD-30 Code | R-PSSO-G5 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Output Current-Max | 3.2A |
| Output Voltage-Nom | 15V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SMSIP5H,.6,67TB |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 235 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 63kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.7mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 20 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range of the LM2575S-15?
The LM2575S-15 accepts an input voltage range of 18V to 40V (nominal 30V), making it suitable for automotive 24V systems, industrial 24V rails, and other higher-voltage DC sources that need to be regulated down to a fixed 15V output.
What is the maximum output current of the LM2575S-15?
The LM2575S-15 supports a maximum output current of 1A. It includes internal current limiting circuitry to protect the device during overload conditions, making it reliable for powering loads up to 1A continuously in typical step-down converter applications.
What package does the LM2575S-15 come in and what are the PCB footprint considerations?
The LM2575S-15 is available in a 5-pin D2PAK (TO-263) surface-mount package (JESD-30 code R-PSSO-G5), which provides good thermal dissipation for up to 1A load. The through-hole tab can be soldered directly to the PCB ground plane to enhance heat spreading.
Can the LM2575S-15 be used as a buck-boost regulator?
Yes, the LM2575S-15 can also be configured as a buck-boost regulator with an appropriate external inductor and diode network. This flexibility allows designers to generate 15V output even when input voltage varies above and below the target output, useful in battery-backup or wide-range supply designs.
Are there pin-compatible alternatives to the LM2575S-15?
Pin-compatible alternatives include the LM2576S-15 (higher 3A current version) from Texas Instruments, and third-party equivalents from ON Semiconductor (MC34063), Diodes Inc., and others. Always verify electrical specs match your design requirements before substituting, especially input voltage range and switching frequency.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $5.8500 | $5.85 |
| 6+ | $4.2900 | $25.74 |
| 18+ | $3.9000 | $70.20 |
| 270+ | $1.5715 | $424.30 |
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