S-1155B50-U5T1U

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

The S-1155B50-U5T1U is a positive fixed linear voltage regulator from the ABLIC S-1155 series, housed in an SOT-89-5 surface-mount package. It provides a fixed output voltage of 5.0 V with a maximum continuous output current of 500 mA. The device operates within an input voltage range of 2.0 V to 5.5 V and features a typical dropout voltage of 0.1 V at 200 mA load. Key electrical characteristics include a quiescent current of 1 µA and a power supply rejection ratio (PSRR) of 60 dB at 1 kHz. It supports an operating temperature range from -40°C to +85°C.

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

• Ultra-low quiescent current consumption for extended battery life
• High ripple rejection capability for clean power delivery
• Integrated overcurrent protection and thermal shutdown safeguards
• Low dropout performance ensures stability near input limits

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

• Battery-powered portable electronic devices
• Wearable technology requiring low standby current
• Mobile communication modules
• IoT sensor nodes

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

Verify the specific suffix U5T1U against the manufacturer's official datasheet to confirm pinout compatibility and tape-and-reel specifications. Confirm RoHS compliance status and check for any recent product change notifications or end-of-life notices directly from ABLIC before finalizing procurement plans.

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

Select this component when a stable 5.0 V rail is required with minimal static power draw. Ensure the input voltage remains above 2.0 V and below 5.5 V. Verify that the thermal dissipation capabilities of the SOT-89-5 package are sufficient for the expected load current and ambient temperature conditions.

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

This part belongs to the S-1155 family of CMOS LDO regulators designed for high efficiency and low noise. The series is characterized by its ultra-low current consumption and robust protection features, making it suitable for applications where power conservation and reliability are critical constraints.

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

Consult official substitution guides for compatible parts within the same series or alternative manufacturers offering identical pinouts and electrical parameters.