AS13985H18-T

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

The AS13985H18-T is a micropower low-dropout linear regulator delivering a fixed 1.8V output at up to 150mA. It operates within a 2.5V to 5.5V input range and features ultra-low dropout voltage, typically 45mV at full load. The device ensures stability with ceramic capacitors between 1µF and 22µF. Quiescent current is 95µA in active mode and drops below 1µA during shutdown. Output noise can be reduced to 30µV RMS using an external bypass capacitor.

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

• Ultra-low dropout performance for efficient battery-powered designs
• Integrated over-temperature and over-current protection mechanisms
• Low-noise operation capability via dedicated bypass pin
• High peak-output current capability exceeding nominal ratings

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

• Mobile phones and PDAs
• MP3 players and portable media devices
• Digital cameras and handheld computers
• Cordless telephones and CD/DVD players

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

Verify the specific ordering code AS13985H18-T matches the required 1.8V output and SOT23 package configuration. Confirm that the supplier provides RoHS-compliant and lead-free units as specified in the manufacturer documentation. Ensure compatibility with standard tape and reel delivery formats for automated assembly processes.

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

Select this component when designing circuits requiring a stable 1.8V rail from varying supply voltages. It is suitable for applications demanding minimal external components and high efficiency under light loads. Consider the thermal resistance characteristics of the SOT23 package for power dissipation calculations in compact enclosures.

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

This part belongs to the AS13985 series of micropower LDO regulators manufactured by austriamicrosystems AG. The series offers multiple fixed output voltage options ranging from 1.2V to 5.0V. The H suffix indicates the 5-pin SOT23 package variant, while the F suffix denotes the 5-bump WLP package.

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

Other variants within the AS13985 family share identical electrical specifications but differ in output voltage or package type. Verify that any substitute maintains the same 1.8V output requirement and SOT23 footprint compatibility.