ON Semiconductor NCP1402SN19T1 Step-Up DC-DC Converter

The ON Semiconductor NCP1402SN19T1 is a highly efficient, fixed frequency, step-up DC-DC converter that is designed to provide a reliable power source for low-voltage applications. This integrated circuit (IC) is capable of converting input voltages as low as 0.8V to a fixed output voltage of 1.9V, making it an ideal solution for battery-powered devices, including those powered by single-cell alkaline or NiCd/NiMH batteries.

The NCP1402SN19T1 operates on a switching frequency of 100kHz, which allows for the use of small, low-cost inductors and ceramic capacitors while minimizing the overall solution footprint. This makes the IC particularly suitable for portable electronic devices where space is at a premium, such as handheld medical devices, personal electronics, and wearable technology.

Featuring a built-in power MOSFET, the NCP1402SN19T1 eliminates the need for an external Schottky diode, further reducing the component count and simplifying the design. Its internal oscillator, feedback resistor, and compensation components provide a complete power conversion solution with minimal external components, ensuring a straightforward and cost-effective implementation.

With its high level of integration and efficiency, the NCP1402SN19T1 also boasts several protection features that ensure the longevity and stability of the end application. These include thermal shutdown to prevent overheating, under-voltage lockout to protect against low input voltage conditions, and current limiting to safeguard against overcurrent scenarios.

The device is housed in a compact, 5-pin TSOP package, which not only aids in reducing the PCB layout space but also offers excellent thermal performance. ON Semiconductor's commitment to quality ensures that the NCP1402SN19T1 meets the rigorous demands of modern electronic devices, providing a robust and reliable power management solution that designers can trust.

In summary, the ON Semiconductor NCP1402SN19T1 is a versatile and efficient step-up DC-DC converter that offers a fixed 1.9V output, low component count, and a host of protection features, all in a small package, making it an excellent choice for powering a wide range of portable and low-voltage electronic devices.