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RTQ2105GQWT-QA Breakout
IC REG BUCK SYNC 3A 36V 24WQFN
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Design a Custom BoardAbout This Component
High-efficiency synchronous buck converter rated for 3A output current with 4V to 36V input range and automotive-grade AEC-Q100 qualification. Features integrated 70mΩ MOSFETs, adjustable output voltage (0.8V to VIN), peak current mode control, and programmable switching frequency from 300kHz to 2.2MHz. Includes protection functions: input UVLO, output UVP, cycle-by-cycle overcurrent limit, thermal shutdown, and optional spread spectrum modulation for EMI reduction. Suitable for automotive power distribution, USB PD applications, and supercapacitor charging.
Package: WQFN-24-1EP (4×4mm, EP) · 24 pins
Why does this need a breakout?
This 0.5mm pitch QFN-24 package requires a breakout board to prototype effectively — hand soldering the fine-pitch pads is impractical, and the bottom-side exposed pad cannot be accessed on breadboards. A breakout routes the 24 pins to standard headers, enabling rapid testing of multi-channel DACs, ADCs, VCOs, and other analog signal processors without reflow equipment.
Component specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Richtek USA Inc. |
| Part Number | RTQ2105GQWT-QA |
| Package | WQFN-24-1EP (4×4mm, EP) |
| Pin Count | 24 |
| Current - Output | 3A |
| Frequency - Switching | 300kHz ~ 2.2MHz |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Topology | Buck |
| Voltage - Input (Max) | 36V |
| Voltage - Input (Min) | 3V |
| Voltage - Output (Max) | 36V |
| Voltage - Output (Min/Fixed) | 0.8V |
What's Included
BILL OF MATERIALS
- 1x RTQ2105GQWT-QA 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