LM2577T-12/NOPBIn StockTexas Instruments
The LM2577T-12/NOPB is a step-up (boost) switching regulator IC from Texas Instruments. It delivers up to 3A output current at a fixed 12V output with 56kHz switching frequency and 3.5V–40V input range. From $3.6, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Transistor Outline, Vertical
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- LM2577T-12/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.6000(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 12V output boost converter with up to 3A output current, ideal for regulated voltage rails
- Wide input voltage range of 3.5V to 40V supports diverse power supply designs
- Current-mode PWM control at 56kHz enables stable, high-efficiency operation
- 5-Pin TO-220 through-hole package simplifies thermal management and board assembly
- Low external component count reduces BOM cost and PCB footprint
Applications
The LM2577T-12/NOPB is widely used in industrial power supplies, battery-powered equipment, and automotive electronics where a stable 12V boost rail is required. It suits applications such as LCD backlighting, motor drive pre-regulators, and embedded system power conditioning. Its robust 3A current capability also makes it suitable for telecom and test-and-measurement equipment.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 40V |
| Input Voltage-Min | 3.5V |
| Input Voltage-Nom | 5V |
| JESD-30 Code | R-PSSO-G5 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 6A |
| Output Voltage-Max | 12.6V |
| Output Voltage-Nom | 12V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SIP5,.1,67TB |
| Package Shape | UNSPECIFIED |
| Package Style | SMALL OUTLINE |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 14mA |
| Surface Mount | NO |
| Switcher Configuration | BOOST |
| Switching Frequency-Max | 62kHz |
| Technology | BIPOLAR |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | MATTE TIN |
| Terminal Pitch | 1.7mm |
| Terminal Position | SINGLE |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM2577T-12/NOPB:
Frequently Asked Questions
What is the output voltage and maximum output current of the LM2577T-12/NOPB?
The LM2577T-12/NOPB provides a fixed 12V output voltage with a maximum output current of 3A. The switching frequency is 56kHz and the input voltage range is 3.5V to 40V, making it suitable for a wide range of boost converter applications.
What are the typical applications for the LM2577T-12/NOPB?
This device is commonly used in industrial power supplies, automotive electronics, LCD backlight drivers, motor drive pre-regulators, and battery-operated portable equipment. Its fixed 12V output and 3A current capability cover a broad range of regulated boost power applications.
What package does the LM2577T-12/NOPB come in, and is it RoHS compliant?
The LM2577T-12/NOPB is packaged in a 5-pin TO-220 (Transistor Outline, Vertical) through-hole package, which provides excellent thermal dissipation. Note that this variant carries a Pb-free code of 'No', so check your compliance requirements before use; the /NOPB suffix indicates a RoHS-compliant product line version.
How does the current-mode PWM control benefit my design?
Current-mode PWM control in the LM2577T-12/NOPB improves transient response and simplifies compensation compared to voltage-mode control. It provides inherent cycle-by-cycle current limiting, enhancing protection against overload conditions while maintaining stable 12V output regulation across varying load currents up to 3A.
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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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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $7.2000 | $7.20 |
| 2+ | $4.8000 | $9.60 |
| 6+ | $3.6000 | $21.60 |
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