ROHM has announced new step-down switching regulators with a built-in 800mOhm Power MOSFET. The BD9G101G series provides 0.5A DC output with excellent line and load regulation for smart power management in a small SOT23 (SSOP6) package. The operating frequency is fixed at 1.5MHz, allowing the use of a small inductor and a ceramic capacitor in order to reduce space requirements. All phase compensation components are integrated as well.

The input voltage can vary from 6 to 42V, the internal reference voltage is set to 0.75V with an accuracy of typical ±1.5%. Ideally suited to facilitate step-down switching designs, the new device offers first-rate thermal resistance and multiple protection features such as internal over current protection, under voltage locked out and thermal shutdown. The operating temperature spans from -40°C to +105°C while the maximum junction temperature lays at 150°. Areas of deployment are industrial distributed power and automotive applications, battery powered equipment and medical OA instruments.

Some of the key features are:
- High and Wide Input Range (VCC=6V to 42V)
- 45V/800mOhm Internal Power MOSFET
- 1.5MHz Fixed Operating Frequency
- Feedback Pin Voltage 0.75V±1.5%
- Internal compensated
- Internal Over Current protection,
  Under Voltage Lock Out, Thermal shutdown
- 0µA Shutdown Supply Current
- 6-Lead SOT-23 package (SSOP6)

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