LM3478MA/NOPB Texas Instruments Power Supply (Small Outline Packages) In Stock
LM3478MA/NOPB is a current-mode PWM DC-DC boost controller from Texas Instruments, supporting 1A switch current and input voltages from 2.97V to 40V at up to 1MHz switching frequency. It is designed for step-up converter applications and packaged in an 8-pin SOIC. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LM3478MA/NOPB Datasheet PDF
- Category
- Power Supply
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Wide input voltage range from 2.97V to 40V enabling flexible boost converter designs from single-cell batteries to automotive 12V/24V bus rails
- Current-mode PWM control at up to 1MHz switching frequency allowing use of smaller inductors and capacitors for compact power stage design
- 1A peak switch current capability supporting medium-power boost, SEPIC, and flyback topologies in a single controller IC
- 8-pin SOIC package with lead-free RoHS-compliant construction for straightforward PCB integration in industrial and consumer applications
Applications
The LM3478MA/NOPB is widely used in boost converter designs for industrial power supplies, LED driver backlight circuits, and automotive auxiliary electronics requiring regulated higher output voltages from lower input sources. Its wide input range from 2.97V to 40V makes it suitable for battery-powered portable equipment as well as 12V and 24V automotive and industrial bus applications. The 1MHz switching frequency allows compact, low-profile power converter designs in space-constrained embedded systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 40V |
| Input Voltage-Min | 2.97V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 10A |
| Output Voltage-Max | 500V |
| Output Voltage-Min | 1.26V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 3.3mA |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 1000kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| ## LM3478MA/NOPB Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM3478MA/NOPB:
suggested
suggested
Switching Controller, Current-mode, 10A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
Frequently Asked Questions
What is the input voltage range of the LM3478MA/NOPB?
The LM3478MA/NOPB supports an input voltage range from 2.97V minimum to 40V maximum, with a nominal operating voltage of 12V. This wide range makes it suitable for single-cell Li-ion batteries, 5V USB, 12V, and 24V automotive or industrial power buses.
What type of DC-DC converter topology does the LM3478MA/NOPB support?
The LM3478MA/NOPB is primarily designed for step-up (boost) converter topologies. It uses current-mode PWM control, and its flexible architecture also supports SEPIC and flyback converter designs for versatile power conversion applications.
What is the maximum switching frequency of the LM3478MA/NOPB?
The LM3478MA/NOPB can switch at frequencies up to 1MHz, which allows designers to use smaller inductors and filter capacitors, resulting in more compact and cost-effective power converter designs.
What package does the LM3478MA/NOPB come in?
The LM3478MA/NOPB is available in an 8-pin SOIC (Small Outline Integrated Circuit) package, identified by JESD-30 code R-PDSO-G8. This standard surface-mount package is widely used in industrial and consumer power supply designs.
Is the LM3478MA/NOPB RoHS compliant?
Yes, the LM3478MA/NOPB is lead-free and RoHS compliant, with a Pb-free code of Yes and JESD-609 code e3, making it suitable for use in environmentally regulated electronic products across industrial and consumer markets.
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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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