This document describes the features and characteristics of the BP5277 series non-isolated step-down 3-terminal DC/DC converters produced by ROHM. The series features high rated voltage, stable operation, high conversion efficiency, and ultra-compact design.
The BP5277 series are non‑isolated three‑terminal step‑down DC/DC converters that integrate a control circuit, switching element and inductor. They provide stable output without external components, offering high conversion efficiency and low ripple voltage.
The series includes multiple output voltage versions (3.3 V, 5 V, 9 V, 12 V, 13 V, 15 V) with up to 500 mA output without a heat sink (800 mA with a heat sink) and operate over a wide temperature range from –30 °C to 85 °C.
| Input voltage range | 8 V – 32 V |
|---|---|
| Output voltage options | 3.3 V, 5 V, 9 V, 12 V, 13 V, 15 V |
| Power conversion efficiency (Vi=24 V) | 76 % – 93 % (model dependent) |
The converters accept an input voltage from 8 V to 32 V.
At 24 V input the BP5277‑33 achieves about 76 % conversion efficiency.