The R1171J401D-T1-F is a voltage regulator IC manufactured by Ricoh. This device is a low-dropout (LDO) regulator, designed to provide a stable and regulated output voltage even when the input voltage is close to the output voltage. It's suitable for various power management applications where efficiency and small size are critical.

Applications

• Power supplies for portable devices (smartphones, tablets)
• Battery-powered equipment
• Power management in microcontrollers and microprocessors
• DC-DC converter post-regulation
• Wireless communication devices

Features

• Low dropout voltage: Maintains stable output with minimal input-output voltage difference.
• High output voltage accuracy: Provides precise and reliable voltage regulation.
• Low quiescent current: Minimizes power consumption in standby mode, extending battery life.
• Overcurrent protection: Protects the device and the load from excessive current draw.
• Thermal shutdown protection: Prevents overheating and damage to the regulator.
• Small package size: Suitable for space-constrained applications.
• Fixed output voltage: Provides a pre-defined, stable output voltage of 4.0V (in this case).

Benefits

• Extended battery life: Low quiescent current minimizes power waste, increasing operating time for battery-powered devices.
• Improved system reliability: Overcurrent and thermal shutdown protection features ensure safe and reliable operation.
• Simplified design: Fixed output voltage eliminates the need for external voltage dividers, simplifying the design process.
• Reduced component count: Small package size allows for compact and efficient circuit designs.
• Stable power supply: Provides a consistent and reliable power source for sensitive electronic components.

Additional Details

The R1171J401D-T1-F has a fixed output voltage of 4.0V. It is typically available in a SOT-23-5 package. The operating temperature range typically extends from -40°C to +85°C. The device is designed to provide a stable output voltage even with variations in input voltage and load current. It is frequently used in applications that require efficient power management and reliable performance.