The NJW4140R-TE2 is a low-dropout (LDO) regulator manufactured by New Japan Radio (NJR). This regulator is designed to provide a stable and regulated output voltage from a higher input voltage, while maintaining low power dissipation and a low dropout voltage. It is commonly used in battery-powered devices and other applications where efficiency and size are critical.

Applications:

• Battery-powered devices
• Portable electronics
• Wireless communication devices
• Microcontroller power supplies
• Sensor modules

Features:

• Low dropout voltage
• High output voltage accuracy
• Low quiescent current
• Overcurrent protection
• Thermal shutdown protection
• Small package size (typically SOT-23-5)
• Stable with ceramic capacitors

Benefits:

• Extends battery life due to low quiescent current and high efficiency.
• Ensures stable operation of sensitive electronic components with accurate output voltage regulation.
• Protects the regulator and the load from damage with overcurrent and thermal shutdown protection.
• Saves board space with a small package size.
• Simplifies design with stability using ceramic capacitors.

The NJW4140R-TE2 LDO regulator features a low dropout voltage, which means it can maintain a regulated output voltage even when the input voltage is only slightly higher than the desired output voltage. This is particularly important in battery-powered devices, where the battery voltage gradually decreases as it discharges. The regulator also boasts high output voltage accuracy, ensuring that the connected components receive a stable and reliable power supply. Its low quiescent current minimizes power consumption when the regulator is in standby mode, further extending battery life.

This LDO regulator incorporates overcurrent protection, which limits the output current in the event of a short circuit or overload condition, preventing damage to the regulator and the load. The thermal shutdown protection feature automatically shuts down the regulator if the junction temperature exceeds a safe limit, protecting it from overheating. The NJW4140R-TE2 is typically available in a small SOT-23-5 package, making it ideal for space-constrained applications. It is designed to be stable with ceramic capacitors, which are commonly used in modern electronic devices due to their low ESR (Equivalent Series Resistance) and small size.