R1501S055B-E2-FE

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

The R1501S055B-E2-FE is a fixed positive low-dropout (LDO) linear voltage regulator manufactured by Nisshinbo Micro Devices, formerly Ricoh Electronic Devices. It provides a fixed output voltage of 5.5V with a maximum output current of 1A. The device operates within an input voltage range of 3V to 24V and features a typical dropout voltage of 0.9V at full load. It utilizes CMOS technology and is housed in a 6-pin HSOP-J surface-mount package. The component supports an operating temperature range from -40°C to +105°C and includes built-in protection circuits for overcurrent, short-circuit, and thermal shutdown.

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

• CMOS-based construction enabling high input voltage operation up to 24V with low on-resistance DMOS driver
• Integrated protection mechanisms including peak current limit, short-circuit current limit, and thermal shutdown
• Low supply current consumption suitable for battery-powered applications
• Fixed output voltage configuration with high accuracy

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

• Constant voltage sources for digital home appliances
• Power supplies for car accessories
• Battery-operated electronic devices requiring stable regulation
• General-purpose linear regulation in compact PCB designs

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

Verify the manufacturer designation as Nisshinbo Micro Devices Inc., which acquired the semiconductor division previously known as Ricoh Electronic Devices Co., Ltd. Confirm the package type is 6-HSOP-J (HSOP-6J-6) and ensure compliance with RoHS directives. Check that the specific suffix E2-FE corresponds to the halogen-free and lead-free variant documented in official datasheets. Validate the fixed output voltage of 5.5V against circuit requirements before procurement.

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

Select this component when a 1A output current capability is required with an input voltage up to 24V. The 5.5V fixed output makes it suitable for systems needing this specific rail without external resistors. Consider the 0.9V dropout voltage at 1A load to ensure sufficient headroom between input and output voltages. The wide operating temperature range of -40°C to 105°C supports automotive and industrial environments. Ensure the 6-pin HSOP-J package fits the available footprint.

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

This part belongs to the R1501x series of 1A LDO regulators designed for high-voltage input applications. Unlike lower-current variants such as the R1514x or R1516x series which offer 150mA outputs, the R1501x series utilizes a DMOS transistor to handle higher currents while maintaining low on-resistance. The series is characterized by its ability to operate with input voltages up to 24V, distinguishing it from standard 5V or 12V input regulators.

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

What is the maximum input voltage for the R1501S055B-E2-FE?

The maximum input voltage is 24V.

Does the R1501S055B-E2-FE include protection features?

Yes, it includes built-in peak current limit, short-circuit current limit, and thermal shutdown circuits.

What is the package type for this component?

It is available in a 6-pin HSOP-J (HSOP-6J-6) surface-mount package.