SYNC BUCK 3-17V 4A FCCM SOT-563
Texas Instruments

Bypass caps, pull-ups, strapping resistors, custom silkscreen & more
Design a Custom BoardSynchronous buck converter with 3V to 17V input range and 4A continuous output capability in a compact 1.6mm × 1.6mm SOT-563 package. Operates in fixed-frequency CCM (FCCM) mode maintaining constant switching frequency and low output ripple across all load conditions. Features integrated MOSFETs, D-CAP3 control, up to 97% duty cycle, and comprehensive protection including OVP, OCP, UVLO, and thermal shutdown for industrial and consumer applications.
The SOT-563's 1.27mm pin pitch and small footprint make hand-soldering difficult and breadboard prototyping impossible. A breakout board brings these pins to standard 0.1" spacing, enabling quick breadboard integration for dual transistors, level shifters, and compact buck converters without requiring SMD soldering skills or microscopy.
ELECTRICAL CHARACTERISTICS
| Manufacturer | Texas Instruments |
| Part Number | TPS564257DRLR |
| Package | SOT-563 |
| Pin Count | 6 |
| Current - Output | 4A |
| Frequency - Switching | 600kHz |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Topology | Buck |
| Voltage - Input (Max) | 17V |
| Voltage - Input (Min) | 3V |
| Voltage - Output (Max) |
BILL OF MATERIALS
PCB SPECIFICATIONS
< 0.9" (straddles breadboard)
2.54mm standard
Lead-free, reflow assembled
FR4, lead-free HASL
| 10V |
| Voltage - Output (Min/Fixed) | 0.6V |