AS13985F-26-T

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

The AS13985F-26-T is a micropower low-dropout linear regulator delivering 150mA output current. It operates with an input voltage range of 2.5V to 5.5V and provides a fixed 2.6V output. The device guarantees stability with ceramic output capacitors between 1µF and 22µF. Quiescent current is typically 95µA in active mode and drops below 1µA during shutdown. Output noise is reduced to 30µV RMS when a bypass capacitor is used. Integrated protections include over-current limiting and thermal shutdown at 160°C.

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

• Ultra-low dropout voltage ensures high efficiency under minimal headroom conditions
• Low-noise architecture supports direct connection to sensitive RF circuits
• Automatic sleep mode minimizes power consumption in standby states
• Integrated thermal and current protection safeguards against overload

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 package type (WLP or SOT23) and output voltage tolerance required for your design. Confirm that the ordering code matches the exact voltage step needed, as multiple variants exist within the series. Ensure compatibility with low-ESR ceramic capacitors for stable operation. Check for RoHS compliance status if required by your manufacturing standards.

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

Select this component for battery-powered applications requiring precise voltage regulation with minimal quiescent current draw. The 2.6V output is suitable for powering logic circuits or sensors directly from single-cell lithium batteries. Consider the WLP package for space-constrained designs or SOT23 for easier prototyping. Ensure the load current does not exceed 150mA to maintain specified performance levels.

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

This LDO belongs to the AS13985 family of micropower regulators designed for mobile electronics. It replaces older linear regulators that consume higher static currents. The device addresses the need for extended battery life in portable gadgets while maintaining signal integrity through low-noise performance. It complements other power management solutions in complex mobile system architectures.

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

Direct substitutes may include other 150mA LDOs with similar pinouts and voltage ranges. Verify equivalent dropout characteristics and noise specifications before substitution. Ensure the replacement device supports the same operating temperature range and package dimensions. Cross-reference with manufacturer databases for functional equivalents if the original part is discontinued.

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

What is the maximum output noise voltage?

The output noise voltage is 30µV RMS when measured with a 10nF bypass capacitor connected to the BYPASS pin.

How does the device handle over-temperature conditions?

The regulator features integrated thermal shutdown protection that activates at a junction temperature of 160°C to prevent damage.

Is the device stable with ceramic capacitors?

Yes, stability is guaranteed with ceramic output capacitors having capacitance values between 1µF and 22µF.