This device is a fully integrated 20 A synchronous buck regulator for single-output point-of-load power conversion. It operates from 2.7 V to 16 V with an external 3.3 V bias supply, or from 4 V to 16 V using its internal bias LDO, and regulates outputs from 0.6 V to 5.5 V. FAST constant on-time control supports selectable 600 kHz, 800 kHz, or 1 MHz switching, stable operation with ceramic output capacitors, programmable soft start, adjustable current limit, and voltage tracking. Integrated protection includes power-good indication, overcurrent protection, undervoltage protection, latch-off overvoltage protection, and thermal shutdown, and the device is supplied in a 3 mm x 4 mm QFN-21 package for industrial operation from -40 °C to 125 °C junction temperature. It is RoHS compliant, lead-free, and halogen-free.
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| Topology | Buck |
| Output Current Max | 20A |
| Input Voltage Range | 2.7 to 16 with external VCC; 4 to 16 with internal biasV |
| Output Voltage Range | 0.6 to 5.5V |
| Reference Voltage | 0.6V |
| Reference Accuracy | ±0.5% |
| Switching Frequency Range | 600 to 1000kHz |
| Number of Outputs | 1 |
| Operating Junction Temperature Range | -40 to 125°C |
| Package Size | 3 x 4mm |
| Internal Bias LDO | Yes |
| Soft-Start Time Minimum | 1ms |
| Voltage Tracking | Yes |
| Moisture Sensitivity Level | 2 |
| Qualification | Industrial |
| RoHS | Compliant |
| Lead Free | Yes |
| Halogen Free | Yes |
These are design resources that include the Infineon TDA38825
User guide for the Infineon EVAL_TDA38825_5VOUT evaluation board, featuring a synchronous buck regulator delivering 5V at up to 20A from a 12V input.
