10pcs LMR Series Buck Regulator IC Chips – Mixed SMD Models
10pcs LMR Series Buck Regulator IC Chips – Mixed SMD Models
10-Pack LMR Series DC/DC Switching Regulator IC Chips
Upgrade your electronics projects with this convenient 10-piece assortment of LMR series step-down (buck) switching regulator integrated circuits. These high-performance ICs from the popular LMR family are widely used in power management applications across industrial, consumer, and embedded system designs. Whether you're prototyping, repairing, or building from scratch, having a mixed set of these chips on hand keeps your workbench ready for any design challenge.
Included Models
- LMR14006XDDCR – 40V, 0.6A synchronous step-down regulator (SOT-23 package)
- LMR14203XMKX/NOPB – 40V, 0.3A step-down regulator (SOT-23 package)
- LMR14206XMKX/NOPB – 40V, 0.6A step-down regulator (SOT-23 package)
- LMR12010XMKX/NOPB – 14V, 1A step-down regulator (SOT-23 package)
- LMR14030SDDAR – 40V, 3A synchronous step-down regulator (SOIC package)
- LMR14010ADDCR – 40V, 1A step-down regulator (SOT-23 package)
Key Features
- Wide Input Voltage Range: Models supporting up to 40V input for versatile applications
- High Efficiency: Synchronous switching topology minimizes energy loss
- Compact SMD Packages: SOT-23 and SOIC footprints ideal for space-constrained PCB designs
- Mixed Model Pack: 10 chips across multiple LMR variants — great for labs, repair shops, and makers
- RoHS-Compliant (NOPB variants): Lead-free versions available in this assortment
- Low Quiescent Current: Suitable for battery-powered and low-standby-power designs
Typical Applications
- Industrial power supplies and automation controllers
- Microcontroller and microprocessor supply rails
- IoT devices and embedded system prototyping
- LED driver circuits
- Automotive and instrumentation electronics
Specifications
| Quantity | 10 pieces (mixed models) |
| IC Family | LMR Series Step-Down (Buck) Switching Regulators |
| Package Types | SOT-23, SOIC |
| Input Voltage | Up to 40V (model dependent) |
| Output Current | 0.3A – 3A (model dependent) |
| Origin | Made in Mainland China |
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Frequently Asked Questions
Q: What IC models are included in this 10-piece LMR chip assortment?
A: The pack includes mixed quantities across these models: LMR14006XDDCR, LMR14203XMKX/NOPB, LMR14206XMKX/NOPB, LMR12010XMKX/NOPB, LMR14030SDDAR, and LMR14010ADDCR. The exact quantity per model may vary, making it a great grab-bag for engineers and hobbyists who need multiple LMR series regulators on hand.
Q: Are these ICs suitable for surface-mount (SMD) PCB assembly?
A: Yes. The LMR series chips in this assortment come in SMD packages including SOT-23 and SOIC (SOIC-8 style), which are fully compatible with standard surface-mount PCB assembly and reflow soldering processes.
Q: What does "NOPB" mean in the model number?
A: "NOPB" stands for "No Lead (Pb)" — indicating that those specific variants are RoHS-compliant and manufactured without lead-based solder, making them suitable for environmentally conscious and regulatory-compliant designs.
Q: What is the primary function of LMR series ICs?
A: LMR series ICs are step-down (buck) DC/DC switching regulators. They efficiently convert a higher DC input voltage to a lower, regulated DC output voltage, making them essential components in power management circuits for embedded systems, industrial electronics, and consumer devices.