AP2128K-2.5TRG1

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

The AP2128K-2.5TRG1 is a positive voltage regulator IC fabricated by CMOS process, providing a fixed 2.5V output with a maximum current of 300mA. It operates within an input voltage range of 2.5V to 6V and features low dropout voltage, high output accuracy (±2%), and extremely low noise (60µVrms). The device includes shutdown functionality with standby current as low as 0.1µA, over-temperature protection, and short-circuit current limiting. It utilizes SOT-23-5 packaging and requires only 1µF ceramic capacitors for stability.

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

• Extremely low output noise suitable for sensitive analog circuits
• Integrated shutdown control with ultra-low standby current consumption
• Compatible with low ESR ceramic capacitors for stable operation
• Built-in thermal shutdown and short-circuit current limiting protection

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

• Datacom equipment power supplies
• Notebook computer voltage regulation
• Motherboard auxiliary power rails

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

Verify the manufacturer origin, as the datasheet identifies BCD Semiconductor Manufacturing Limited while the model prefix implies Diodes Incorporated. Confirm RoHS compliance status via the G1 suffix and check for any product change notifications or discontinuation notices prior to finalizing procurement plans.

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

Select this component when designing battery-powered devices requiring precise voltage regulation with minimal quiescent current draw. Ensure the application environment stays within the -40°C to 85°C operating temperature range and that input voltages do not exceed the absolute maximum ratings to maintain reliability.

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

This part belongs to the AP2128 series of high-speed, extremely low noise CMOS LDO regulators. The series offers various fixed output voltages ranging from 1.0V to 5.2V, alongside an adjustable version. All variants share the same SOT-23-5 package and core electrical characteristics designed for portable electronics.

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

AP2128K-ADJTRG1

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

What is the typical quiescent current for the AP2128K-2.5TRG1?

The typical quiescent current is 60µA at room temperature with no load.

Does the AP2128K-2.5TRG1 support external voltage adjustment?

No, the 'K' designation indicates a fixed output voltage version. Adjustable versions are designated with 'ADJ' in the part number.