R1121N301B-TR-FE

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The R1121N301B-TR-FE is a CMOS-based low noise LDO regulator with a fixed 3V output. It delivers up to 150mA output current within an input voltage range of 2.0V to 8.0V. Key electrical parameters include a typical supply current of 35μA, standby current of 0.1μA, and ripple rejection of 70dB at 1kHz. The device features ±2.0% output voltage accuracy, line regulation of 0.05%/V, and dropout voltage typically around 0.2V at 100mA. It operates from -40°C to +85°C in an SOT-23-5 package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Built-in chip enable circuit with active high logic for power management
• High output voltage accuracy with low temperature drift coefficient
• Low ON-resistance providing excellent transient response performance
• Integrated current limit circuit for short-circuit protection

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Power source for cellular phones such as GSM, CDMA and PCSs
• Power source for domestic appliances like cameras and camcorders
• Power source for battery-powered equipment

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'B' indicates active high chip enable functionality against the official datasheet. Confirm the 'TR-FE' designation matches the required reel quantity and environmental compliance standards. Ensure the pinout configuration aligns with the target PCB footprint design requirements.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 3V rail is required with minimal quiescent current consumption. The active high chip enable feature allows direct control by microcontrollers without level shifting. Verify that the load current does not exceed the maximum rating while maintaining the necessary headroom for stable operation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the R1121N series of low noise 150mA LDO regulators manufactured by Nisshinbo Micro Devices. The series utilizes CMOS technology to achieve high efficiency and low power consumption. It is designed for portable electronic applications requiring stable voltage regulation under varying load conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Check for compatible parts within the same R1121N family with different output voltages or active low enable options. Verify pin compatibility with similar packages like TK112 or TK111 if board space is constrained.