AS1359-BTTT-285

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

The AS1359-BTTT-285 is a low-dropout linear regulator from the AS1358/AS1359 series, manufactured by ams OSRAM. It provides a fixed output voltage of 2.85V with a maximum continuous load current of 300mA. The device operates within an input voltage range of 2V to 5.5V and features an ultra-low quiescent current of 40µA. Key electrical characteristics include a dropout voltage of 140mV at full load, an output noise of 9µVRMS, and a power-supply rejection ratio exceeding 80dB up to 10kHz. It incorporates integrated thermal shutdown and overcurrent protection.

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

• Ultra-low noise architecture delivering 9µVRMS output noise for sensitive analog circuits
• Integrated P-channel MOSFET pass transistor ensures extremely low quiescent current consumption
• Advanced noise bypass circuitry allows stability with small ceramic capacitors
• Built-in thermal and current limiting safeguards against fault conditions

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

• Mobile phones and wireless communication devices
• Bluetooth portable radios and accessories
• Digital cameras and personal audio devices
• Battery-powered handheld computers and PDAs

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

Verify the specific ordering code AS1359-BTTT-285 matches the required 2.85V output and 300mA current rating. Confirm package type TSOT23-5 compatibility with your PCB footprint. Ensure supply chain sources provide RoHS compliant units. Check datasheet revisions for any updates to absolute maximum ratings or application notes before finalizing procurement.

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

Select this component when designing battery-operated systems requiring stable power delivery under varying loads. The low dropout characteristic maximizes usable battery life. Verify that the input voltage remains above the minimum threshold during discharge cycles. Consider the thermal resistance of the PCB layout to manage heat dissipation effectively under high load conditions.

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

This part belongs to the AS1358/AS1359 family of ultra-low-noise LDOs designed for space-constrained applications. The AS1359 variant specifically supports higher current demands compared to the AS1358. Manufactured by austriamicrosystems (now ams OSRAM), these regulators utilize a bandgap reference and error amplifier to maintain precise output regulation across wide temperature ranges.

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

Cross-reference tools may suggest compatible alternatives from other manufacturers. Verify pinout compatibility and electrical specifications such as dropout voltage and PSRR before substitution. Consult official cross-reference databases for confirmed functional equivalents.