LM25576QMH Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The LM25576QMH is a 3A current-mode buck switching regulator from Texas Instruments supporting input voltages from 6V to 42V with adjustable output as low as 1.225V. It features pulse-width modulation control in a compact 20-pin PowerTSSOP package for high-efficiency DC-DC conversion. Priced competitively, it is in stock globally with worldwide shipping available.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- LM25576QMH Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM25576QMH?
- Current-mode PWM control delivers fast transient response and inherent cycle-by-cycle current limiting for robust 3A output
- Wide 6V to 42V input range suits automotive and industrial 24V bus designs with adjustable output down to 1.225V
- Compact 20-pin PowerTSSOP (4.40mm width) minimizes board footprint while dissipating heat efficiently at full 3A load
What is LM25576QMH used for?
The LM25576QMH is well-suited for industrial automation systems, point-of-load DC-DC converters powered from 12V or 24V rails, and automotive electronics requiring a step-down regulator. Its wide input range and adjustable 1.225V reference output also make it ideal for powering DSP cores, FPGAs, and microcontrollers in embedded designs. Telecom and networking equipment running from high-voltage bus rails benefit from its robust 42V input tolerance and current-mode control architecture.
What are the specifications of LM25576QMH?
| Pbfree Code | No |
| YTEOL | 0 |
| Additional Feature | ALSO HAS ADJUSTABLE OUTPUT VOLTAGE AS LOW AS 1.225V |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 42V |
| Input Voltage-Min | 6V |
| Input Voltage-Nom | 24V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 545kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LM25576QMH datasheet?
LM25576QMH Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM25576QMH?
Compatible alternatives and drop-in replacements for LM25576QMH:
Switching Regulator, Current-mode, 3A, 1000kHz Switching Freq-Max, BICMOS, PDSO20
Switching Regulator, Current-mode, 3A, 545kHz Switching Freq-Max, PDSO20
Frequently Asked Questions
What is the input voltage range of the LM25576QMH and why does it suit 24V industrial systems?
The LM25576QMH operates from 6V to 42V input, making it a natural fit for 24V industrial bus rails that can spike to 40V or higher during load dumps. Its 42V rating provides a safe margin without requiring external clamping, simplifying the power stage design for factory automation and motor-drive auxiliary supplies.
How much continuous output current can the LM25576QMH deliver, and what control topology enables precise current limiting?
The LM25576QMH delivers up to 3A continuous output current using current-mode PWM control, which enforces cycle-by-cycle current limiting at the switch level. This topology reacts within a single 100 kHz switching cycle to overload events, protecting both the IC and downstream loads without requiring a separate overcurrent sense resistor.
When would an engineer choose LM25576QMH over a fixed-output regulator for powering an FPGA core at 1.2V?
LM25576QMH is preferable when the target rail must be trimmed below 1.3V, because its adjustable output reaches as low as 1.225V—matching common FPGA core voltages precisely. A fixed-output device at 1.2V may not be available in a 42V-input version, whereas LM25576QMH covers the full input range and still regulates a 1.225V output in a 20-pin PowerTSSOP footprint.
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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.
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