AS13985H-30-T

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

The AS13985H-30-T is a micropower low-dropout linear regulator (LDO) manufactured by ams OSRAM, delivering a guaranteed output current of 150mA. It provides a fixed nominal output voltage of 3.0V with an accuracy of ±1%. The device operates within an input supply range of 2.5V to 5.5V and features ultra-low dropout characteristics, typically 45mV at full load. Designed for stability with ceramic capacitors from 1µF to 22µF, it includes integrated over-current and over-temperature protection. The component is housed in a compact 5-pin SOT-23 package.

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

• Ultra-low dropout voltage ensures efficient regulation even under minimal input-to-output voltage differentials.
• Integrated over-current and over-temperature protection mechanisms safeguard the device against fault conditions.
• Guaranteed stability with low equivalent series resistance (ESR) ceramic output capacitors ranging from 1µF to 22µF.
• Low shutdown current consumption enables extended battery life in portable electronic applications.

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

• Powering mobile phones and PDAs
• Supplying MP3 players and digital cameras
• Providing regulated power for handheld computers

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

Verify that the specific ordering code matches the required output voltage and package type. Confirm RoHS compliance status as per manufacturer specifications. Ensure proper handling procedures are followed due to moisture sensitivity classification. Validate that the supplier provides original manufacturer documentation to guarantee authenticity and traceability.

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

Select this LDO for designs requiring stable operation with small ceramic output capacitors. Consider the 3.0V fixed output configuration for systems needing precise voltage regulation. Evaluate thermal dissipation requirements based on the junction-to-ambient thermal resistance of the SOT-23 package. Ensure the input voltage remains within the specified operating range to maintain optimal line regulation performance.

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

This component belongs to the AS13985 family of micropower LDOs designed for battery-powered devices. The 'H' suffix indicates the 5-pin SOT-23 package variant, while '30' specifies the 3.0V output voltage. The '-T' suffix denotes tape and reel delivery format. This family offers multiple fixed output voltage options to suit various low-voltage logic and analog circuit requirements.

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

Compatible alternatives include other 150mA LDOs with similar 3.0V output and SOT-23 packaging. Verify pin compatibility and electrical specifications such as dropout voltage and quiescent current before substitution. Check for equivalent thermal management capabilities and stability requirements with the chosen output capacitor ESR values.

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

What is the maximum output noise voltage of the AS13985?

The output noise voltage is 30µV RMS when measured with a bandwidth from 10Hz to 100kHz and a 1µF output capacitor.

How does the enable pin function?

The EN pin controls the device state. A voltage greater than or equal to 1.2V enables the output, while a voltage less than or equal to 0.4V disables it, resulting in a shutdown current of ≤1µA.