The R1140Q311D-TR is a voltage regulator IC manufactured by Ricoh. It provides a stable and regulated output voltage of 3.1V, making it suitable for a variety of electronic applications. The "-TR" suffix signifies tape and reel packaging for automated assembly.

Applications

• Microcontroller Power Supply: Supplying a stable 3.1V for microcontrollers and digital circuits in embedded systems.
• Sensor Applications: Providing a regulated voltage source for sensors and transducers requiring a precise supply.
• Low-Power Devices: Power management in low-power IoT devices, wearables, and portable electronics.
• Wireless Communication Modules: Voltage regulation for RF transceivers and wireless communication modules.
• Memory Devices: Supplying power to memory ICs like EEPROMs and SRAMs.

Features

• Fixed Output Voltage: Provides a stable 3.1V output voltage.
• Low Dropout Voltage: Ensures stable operation even when the input voltage is close to the output voltage.
• Low Quiescent Current: Minimizes power consumption in standby mode, extending battery life.
• Overcurrent Protection: Protects the regulator and connected circuits from damage due to excessive current.
• Short-Circuit Protection: Safeguards against short circuits, preventing damage to the regulator.
• Thermal Shutdown Protection: Protects the IC from overheating.
• Small Package: Available in a compact package for space-constrained applications.

Benefits

• Stable Power Supply: Provides a consistent and reliable voltage source.
• Extended Battery Life: Low quiescent current minimizes power consumption.
• Protection Against Fault Conditions: Overcurrent, short circuit, and thermal shutdown features protect the regulator and connected circuitry.
• Simplified Circuit Design: Fixed output voltage simplifies circuit design.
• Reduced Board Space: Small package size allows for integration into space-constrained applications.

Additional Details

The R1140Q311D-TR typically operates with an input voltage ranging from slightly above 3.1V up to the maximum value specified in its datasheet. Consult the official Ricoh datasheet for detailed specifications, including output current capability, ripple rejection, and transient response. It is typically packaged in a small surface-mount package, such as SOT-23 or DFN. The "-TR" suffix signifies tape and reel packaging for automated assembly. This device is generally RoHS compliant. The output voltage accuracy is typically within a few percent of the nominal value. The dropout voltage is commonly around 200mV at the rated output current, but this can vary depending on operating conditions.