Nisshinbo Micro Devices Inc. Voltage Regulators - Linear R1121N421B-TR-FE

The R1121N421B-TR-FE is a low noise, CMOS-based linear voltage regulator IC from Quarktwin Technology Ltd. It provides a fixed output voltage with high accuracy, typically ¬±2.0%, and operates with a supply current of approximately 35OºA, dropping to 0.1OºA in standby mode. The device features a low dropout voltage of about 0.2V at an output current of 100mA and offers a ripple rejection of 70dB at 1kHz. The output voltage can be selected within a range of 1.5V to 5.0V in 0.1V increments. This voltage regulator is packaged in a compact SOT-23-5 format, allowing for high-density mounting on circuit boards. It includes a built-in chip enable function, available in two active types: active low (A) and active high (B). The R1121N series is suitable for applications such as power supplies for handheld communication devices, cameras, and battery-powered equipment, making it a versatile choice for various electronic projects.