RT9161A-25GG

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

The RT9161A-25GG is a fixed-output low dropout linear voltage regulator manufactured by Richtek Technology Corporation. It provides a stable 2.5V output with a maximum current capacity of 300mA. The device utilizes an internal P-MOSFET to achieve low ground current and tight load regulation. It supports input voltages up to 12V and includes built-in current-limiting and thermal-limiting protections. The component is housed in a SOT-223 package, designated by the 'G' suffix, and operates within a commercial temperature range.

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

• Low dropout voltage performance across varying load conditions
• Internal P-MOSFET architecture eliminates base current draw
• Integrated current-limiting and thermal-limiting protection circuits

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

• Voltage regulation for LAN cards
• Power supply for CD-ROM and DVD drives
• Wireless communication systems
• Battery-powered electronic devices

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

Verify the specific output voltage code (25 for 2.5V) and package type (G for SOT-223) against the official Richtek datasheet. Confirm the operating temperature range and RoHS compliance status directly with the manufacturer or authorized distributors before procurement. Ensure the application circuit matches the 300mA current rating constraints.

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

Select this component when a fixed 2.5V rail is required with moderate current demands up to 300mA. The SOT-223 package offers better thermal dissipation than smaller packages like SOT-23. Consider the input voltage range and dropout characteristics relative to the battery or source voltage to ensure stable regulation under all load conditions.

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

The RT9161 series comprises low dropout linear regulators available in multiple output voltages and packages. The RT9161A variant specifically denotes the 300mA current version, distinct from the 500mA RT9161. The 'G' suffix identifies the SOT-223 package option, while other suffixes correspond to SOT-23, SOT-89, or TO-92 formats.

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

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative LDOs based on pinout, voltage accuracy, and thermal performance requirements.