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TPS5420DR Breakout
IC REG BUCK ADJ 2A 8SOIC
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High-efficiency PWM step-down converter with integrated 110mΩ MOSFET for 2A continuous output (3A peak). Accepts 5.5V to 36V input and provides adjustable output from 1.22V with internal compensation and soft-start. Features 500kHz fixed switching frequency, overvoltage/overcurrent protection, and thermal shutdown; suitable for distributed power systems, battery chargers, and LED supplies.
Package: SOIC-8 (3.9×4.9mm) · 8 pins
Why does this need a breakout?
An 8-pin SOIC with 1.27mm pitch is too fine for breadboards and hand-soldering without a microscope. A breakout board routes these pins to standard 0.1" headers, enabling rapid prototyping and reliable connections for op-amps, transceivers, and small power MOSFETs without requiring reflow equipment.
Component specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Texas Instruments |
| Part Number | TPS5420DR |
| Package | SOIC-8 (3.9×4.9mm) |
| Pin Count | 8 |
| Current - Output | 2A |
| Frequency - Switching | 500kHz |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Topology | Buck |
| Voltage - Input (Max) | 36V |
| Voltage - Input (Min) | 5.5V |
| Voltage - Output (Max) |
What's Included
BILL OF MATERIALS
- 1x TPS5420DR 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