ON Semiconductor NCP1421DMR2G Step-Up DC-DC Converter

The NCP1421DMR2G is a highly integrated pulse-frequency modulation (PFM) step-up DC-DC converter manufactured by ON Semiconductor. This compact and efficient power management solution is ideal for portable, battery-powered applications where space is at a premium and energy efficiency is crucial.

With its ability to convert voltages as low as 0.8V up to a selectable output voltage, the NCP1421DMR2G makes it possible to power devices from a single-cell AA or AAA battery. This feature is particularly beneficial for handheld devices, wireless peripherals, and other applications where the input power source has a limited voltage range.

The converter operates at a 1.2 MHz switching frequency, which allows for the use of small, low-cost inductors and ceramic capacitors. This high-frequency operation combined with its 0.6mm pitch micro-10 package makes the NCP1421DMR2G an excellent choice for space-constrained applications. Additionally, the device includes an integrated power switch and a Schottky diode, further reducing the external component count.

Energy efficiency is a key attribute of the NCP1421DMR2G, featuring a typical quiescent current of just 7 µA. This low quiescent current helps extend battery life in portable applications. The device also includes an automatic power-saving mode that reduces the quiescent current to an even lower level under light load conditions.

Safety and protection features are built-in, including thermal shutdown, under-voltage lockout (UVLO), and over-current protection. These features ensure reliable operation and protect both the converter and the application from potential damage caused by abnormal operating conditions.

ON Semiconductor's NCP1421DMR2G is a versatile and robust solution for designers looking to maximize battery life while minimizing space in their power-sensitive applications. Its high level of integration, combined with its performance and protection features, makes it a smart choice for a wide range of portable electronics.