The R1140Q401B-TR is a voltage regulator IC manufactured by Ricoh. It's designed to provide a stable and regulated output voltage of 4.0V, making it suitable for various electronic applications. The "-TR" suffix indicates that it's packaged in tape and reel for automated assembly.

Applications

• Microcontroller Power: Providing stable power for microcontrollers and digital logic circuits requiring a 4.0V supply.
• Sensor Power: Regulating voltage for sensors and transducers that need a precise and stable voltage source.
• Portable Devices: Power management in battery-powered devices such as wearables and IoT devices.
• Wireless Communication: Voltage regulation for RF transceivers and other wireless communication modules.
• Data Acquisition Systems: Supplying stable power to analog-to-digital converters (ADCs) and other data acquisition components.

Features

• Fixed Output Voltage: Provides a stable 4.0V 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.
• Overcurrent Protection: Protects the regulator and connected circuits from damage due to excessive current.
• Short-Circuit Protection: Prevents damage in the event of a short circuit on the output.
• 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 for sensitive electronic components.
• Extended Battery Life: Low quiescent current minimizes power consumption, extending battery life in portable devices.
• Protection Against Fault Conditions: Overcurrent, short circuit, and thermal shutdown features protect the regulator and connected circuitry from damage.
• Simplified Circuit Design: Fixed output voltage simplifies circuit design and reduces the need for external components.
• Reduced Board Space: Small package size allows for integration into space-constrained applications.

Additional Details

The R1140Q401B-TR typically operates with an input voltage ranging from a few volts above the output voltage (4.0V) up to the maximum specified in its datasheet. For comprehensive specifications, including output current capability, ripple rejection, and transient response, refer to the official Ricoh datasheet. It is typically packaged in a small surface-mount package such as SOT-23 or DFN. The "-TR" suffix indicates 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, depending on the specific operating conditions.