R1111N301A-TR-FE

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

The R1111N301A-TR-FE is a CMOS-based low dropout regulator providing a fixed 3.0V output with a maximum current of 150mA. It operates within an input voltage range of 2.0V to 8.0V and features a typical supply current of 35μA. The device includes a chip enable circuit active at logic low, offering high output voltage accuracy of ±2.0% and ripple rejection of 70dB at 1kHz. Packaged in SOT-23-5, it supports operation from -40°C to +85°C.

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

• Integrates a built-in chip enable circuit for power management control
• Provides high output voltage accuracy with low temperature drift
• Includes fold-back protection circuitry for short-circuit safety

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

• Power source for cellular phones such as GSM, CDMA and various kinds of PCSs
• Power source for electrical appliances such as cameras, VCRs and camcorders
• Power source for battery-powered equipment

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

Verify the specific suffix 'A' indicates the Chip Enable pin is active low, distinguishing it from the 'B' variant which is active high. Confirm the package type matches the required SOT-23-5 footprint. Ensure the selected distributor provides official datasheets to validate the RoHS compliance status and exact manufacturing origin before finalizing procurement orders.

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

Select this component when a fixed 3.0V rail is required with minimal quiescent current consumption. The active-low enable feature suits systems where the control signal defaults to a low state during standby. Verify that the load current does not exceed 150mA and that the input voltage remains within the specified 2.0V to 8.0V operational window for stable regulation.

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

This part belongs to the R1111N series of low noise LDO regulators manufactured by Nisshinbo Micro Devices. The series is designed for handheld communication equipment requiring excellent line and load transient responses. The R1111N301A-TR-FE specifically denotes the 3.0V output version with active-low enable functionality in a surface-mount package.

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

The R1111N301B-TR-FE serves as a direct functional substitute if the system design utilizes an active-high chip enable signal instead of active-low. Both variants share identical electrical characteristics, pinouts, and packaging, differing only in the logic level required to activate the regulator.