AS13985H28-T

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

The AS13985H28-T is a micropower low-dropout linear regulator (LDO) manufactured by ams-OSRAM USA INC. It provides a fixed output voltage of 2.8V with a maximum continuous output current of 150mA. 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. It guarantees stability when used with ceramic output capacitors ranging from 1µF to 22µF. The component includes integrated over-current and over-temperature protection mechanisms. It is housed in a compact 5-pin SOT-23 surface-mount package.

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

• Ultra-low dropout voltage performance ensures efficient power delivery even under minimal input-to-output voltage differentials.
• Integrated noise bypass capability allows for direct connection of sensitive circuits without additional filtering networks.
• Automatic sleep mode functionality minimizes quiescent current consumption during inactive periods.
• Robust internal protection circuitry safeguards against thermal overload and excessive output current conditions.

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

• Powering mobile phones and PDAs
• Supplying cordless and handheld computers
• Operating MP3 players and digital cameras
• Providing regulated voltage for CD and DVD players

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

Verify the specific ordering code suffix matches the required output voltage and package type. Confirm RoHS compliance status prior to integration. Ensure the selected variant aligns with the target application's thermal and electrical requirements. Cross-reference datasheet specifications with system design constraints to guarantee compatibility.

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

Select this LDO for battery-powered designs requiring high efficiency and low noise. Verify that the external capacitor meets the specified ESR and capacitance values for stability. Consider the thermal dissipation capabilities based on the ambient temperature and load current. Ensure the enable pin logic levels match the controlling microcontroller or system interface.

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

This component belongs to the AS13985 series of micropower LDO regulators designed for portable electronics. The series offers multiple fixed output voltage options to accommodate various digital logic families. The H-series designation indicates the 5-pin SOT-23 packaging option, providing a compact footprint suitable for space-constrained mobile devices and handheld gadgets.

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

AS13985H27-T: Provides a 2.7V fixed output in the same SOT-23 package. AS13985H30-T: Offers a 3.0V fixed output with identical electrical characteristics and packaging. AS13985H33-T: Delivers a 3.3V fixed output suitable for standard logic interfaces while maintaining the same form factor.