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LMR14203XMKX/NOPB Breakout
IC REG BUCK ADJ 300MA SOT23
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Design a Custom BoardAbout This Component
Adjustable step-down switching regulator in SOT23 package delivering up to 300mA output current. Features integrated MOSFET, current limiting, and thermal shutdown for robust DC-DC conversion from higher input voltages. Suitable for battery-powered systems, portable electronics, and space-constrained applications requiring regulated lower voltages.
Package: SOT-23-6 · 6 pins
Why does this need a breakout?
SOT-23-6 packages house precision regulators, voltage references, and level shifters with 0.95mm pin pitch—too fine for hand soldering and incompatible with breadboards. A breakout board provides through-hole headers for prototype work, eliminating soldering difficulty while enabling quick circuit iteration. Essential for developing with compact analog and power management ICs.
Component specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Texas Instruments |
| Part Number | LMR14203XMKX/NOPB |
| Package | SOT-23-6 |
| Pin Count | 6 |
| Current - Output | 300mA |
| Frequency - Switching | 1.25MHz |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Topology | Buck |
| Voltage - Input (Max) | 42V |
| Voltage - Input (Min) | 4.5V |
| Voltage - Output (Max) | 34V |
| Voltage - Output (Min/Fixed) | 0.765V |
What's Included
BILL OF MATERIALS
- 1x LMR14203XMKX/NOPB soldered onto breakout PCB
- Pin headers pre-soldered (2.54mm / 0.1" pitch)
- All IC pins broken out to 2.54mm headers
Breakout Board Design
PCB SPECIFICATIONS
WIDTH
< 0.9" (straddles breadboard)
PITCH
2.54mm standard
SOLDER
Lead-free, reflow assembled
FINISH
FR4, lead-free HASL