The BL8039CB5TR is a DC-DC converter manufactured by Belling that features a SOT-23-5 ROHS package. It is a switching regulator and provides step-up/down adjustable output voltage from 1.2V to 16V. It has an operating frequency range of 1.5 V to 5.5 V. The device offers wide input voltage range from 2.7V to 20V, excellent line/load regulation, and low quiescent current. It also features automatic soft-start, current limit, and short circuit protection. It is suitable for high density applications where space-sensitivity is a major consideration and can be used in applications such as LDOs, DC-to-DC converters, programmable linear regulators, and general power supply suites.