| Topology | Buck Converter |
| Input voltage | 4.5-75 V |
| Switching frequency | 200-800 kHz |
| Output 1 | 3.3 V / 2 A |
| IC revision | 1.00 |
The RTKA211820DE0010BU board evaluates the RAA211820 (HTSSOP version), a DC/DC synchronous step-down regulator with programmable switching frequency. The RAA211820 supports a wide input voltage range (from 4.5V to 75V) and adjustable output voltage. It delivers up to continuous 2A output current with premium load regulation and line regulation performance.