ROHM announced the availability of the BD9S series (BD9S400MUF-C, BD9S300MUF-C, BD9S200MUF-C, BD9S100NUX-C, BD9S000NUX-C). This series of automotive synchronous secondary buck DC/DC converters have a high reliability and low power consumption in a compact form factor with a temperature range of -40 to +125°C. The products are offered in a leadless package with wettable flanks. This makes them very suitable for using them in applications like radars, cameras and sensors which can be used for assisted driving.
The BD9S series is comprised of a very compact, highly efficiency automotive-grade power supply ICs that include an enable function to adjust the startup time and a PGOOD output indication to improve system functional safety.
This broad lineup of products supports output currents from 0.6 to 4.0A. It is offered in 2 x3 mm2 space-saving packages that deliver high efficient operation, resulting in a best-in-class power conversion efficiency of 90% (at 3.6V input/1.8V output). Additionally, the current mode control ensures fast response to load transients and combined with a fixed 2.2MHz switching frequency, it prevents interference in the AM Band. This higher frequency allows use of smaller external components, which contributes to a higher degree of miniaturization and power savings.
ROHM offers ultra-compact models in output currents ranging from 0.6A to 4.0A. This contributes to model optimization and supports sudden system flexibility and choice.