Nisshinbo Micro Devices Inc. Voltage Regulators - Linear, Low Drop Out (LDO) Regulators RP202K121B-TR

The RP202K121B-TR is a linear voltage regulator IC designed for applications requiring high output voltage accuracy and low dropout voltage. It operates within an input voltage range of 1.4V to 5.25V and provides an adjustable output voltage from 0.8V to 4.0V in 0.1V steps. The device features a low supply current of approximately 2.5µA at no load and 50µA at 10mA load, with a standby mode current of just 0.1µA. This IC includes a chip enable function for standby mode, a built-in current limit circuit to prevent overcurrent damage, and operates in three modes: standby, fast response, and low power, automatically switching based on load conditions. The dropout voltage is typically 0.20V at 200mA output current, and it offers a ripple rejection of 70dB at 1kHz. The RP202K121B-TR is available in compact packages such as DFN(PL)1010-4, SC-88A, and SOT-23-5, facilitating high-density mounting on circuit boards. It is suitable for powering portable communication devices, cameras, and battery-operated equipment.