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ST1S14PHR Breakout
IC REG BUCK ADJ 3A 850KHZ 8HSOP
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Design a Custom BoardAbout This Component
Adjustable step-down switching regulator delivering up to 3A DC output current from 5.5V to 48V input. Features 850kHz fixed switching frequency, 250mΩ typical on-resistance, and integrated current limiting with power-good output. Designed for factory automation, LED drivers, and DC-DC conversion applications.
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 | STMicroelectronics |
| Part Number | ST1S14PHR |
| Package | SOIC-8 (3.9×4.9mm) |
| Pin Count | 8 |
| Current - Output | 3A |
| Frequency - Switching | 850kHz |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Topology | Buck |
| Voltage - Input (Max) | 48V |
| Voltage - Input (Min) | 5.5V |
| Voltage - Output (Max) | 43.2V |
| Voltage - Output (Min/Fixed) | 1.22V |
What's Included
BILL OF MATERIALS
- 1x ST1S14PHR 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