R1172H251B-T1-FE

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

The R1172H251B-T1-FE is a fixed-output low-dropout (LDO) voltage regulator manufactured by Nisshinbo Micro Devices. It provides a fixed output voltage of 2.5 V with a maximum continuous output current of 1 A. The device operates within an input voltage range up to 6 V and maintains a typical ripple rejection ratio of 70 dB. Key electrical parameters include a line regulation of 0.05 %/V, load regulation of 50 mV, and a quiescent supply current of 60 uA. The unit features a dropout voltage of 320 mV and offers a voltage accuracy of 2 %. It is housed in an SOT-89-5 surface-mount package and supports operation temperatures from -40 C to +85 C.

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

• CMOS-based architecture enabling high output current capability alongside low power consumption.
• Integrated thermal shutdown circuitry for enhanced operational safety under overload conditions.
• High ripple rejection performance suitable for noise-sensitive analog and digital circuits.

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

• Portable electronic devices requiring efficient power management
• Battery-powered systems needing stable voltage regulation
• General-purpose low-noise power supply applications

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

Verify the specific suffix codes against official datasheets to confirm pinout compatibility and thermal characteristics. Ensure that the ordering information matches the required output voltage tolerance and package type. Cross-reference the manufacturer's latest documentation to validate environmental compliance status and recommended external component values for optimal stability.

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

Select this component when a fixed 2.5 V output is required with a 1 A current capacity in a compact SOT-89-5 footprint. Consider the 60 uA quiescent current for battery life optimization. Evaluate the 320 mV dropout voltage against the minimum input voltage requirements of the application to ensure proper regulation margins are maintained under all operating conditions.

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

This part belongs to the R1172H series of low-voltage LDO regulators designed for portable equipment. The series utilizes CMOS technology to achieve high efficiency and low standby currents. The R1172H variant specifically targets applications requiring robust performance in small form factors while maintaining precise voltage regulation across varying load conditions.

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

Consult official substitution guides for compatible parts within the same family or alternative manufacturers offering identical pinouts and electrical specifications. Verify that any substitute maintains the same output voltage, current rating, and package dimensions to ensure mechanical and functional interchangeability without redesigning the PCB layout.