AS1358-BTTT-30

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

The AS1358-BTTT-30 is a low-dropout linear regulator from the AS1358/AS1359 series, manufactured by ams-OSRAM USA INC. It provides a fixed 3.0V output with a maximum continuous load current of 150mA. The device features an ultra-low noise profile of 9µVRMS and high power-supply rejection ratio exceeding 80dB up to 10kHz. It operates within an input voltage range of 2V to 5.5V and maintains stability using only a 1µF ceramic capacitor at both input and output pins. The integrated P-channel MOSFET pass transistor ensures extremely low quiescent current consumption of 40µA.

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

• Ultra-low noise architecture achieving 9µVRMS output noise for sensitive analog circuits
• Integrated P-channel MOSFET pass transistor enabling minimal quiescent current draw
• Advanced shutdown logic reducing supply current to below 500nA when disabled
• Built-in overcurrent and thermal protection mechanisms for fault condition safety

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

• Mobile phones and wireless communication devices
• Personal Digital Assistants (PDAs) and handheld computers
• Bluetooth portable radios and accessories
• Digital cameras and personal audio devices

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

Verify the specific ordering code AS1358-BTTT-30 against the manufacturer's latest documentation to confirm availability and package details. Ensure compatibility with the required 3.0V output specification and 150mA load capacity. Check for RoHS compliance status as indicated in official datasheets. Confirm that the TSOT23 5-pin package dimensions align with your PCB layout requirements before finalizing procurement decisions.

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

Select this component when designing battery-powered systems requiring stable, low-noise power delivery for RF or sensor modules. The 150mA current limit suits moderate load applications compared to the 300mA AS1359 variant. Consider the 1µF ceramic capacitor requirement for stability and the 2V minimum input voltage for efficient operation near battery discharge levels. Evaluate thermal dissipation needs based on the difference between input and output voltages under full load conditions.

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

This regulator belongs to the AS1358/AS1359 family of ultra-low-noise LDOs designed for space-constrained portable electronics. The AS1358 variant specifically targets 150mA applications, distinguishing it from the higher-current AS1359. Manufactured by austriamicrosystems AG (now ams-OSRAM), these devices utilize a bandgap reference and error amplifier architecture optimized for low dropout performance and high PSRR in compact surface-mount packages.

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

Consult the manufacturer's cross-reference tools for compatible alternatives if supply constraints arise. Verify that any substitute matches the 150mA current rating, 3.0V fixed output, and TSOT23-5 pinout configuration. Ensure equivalent noise specifications and shutdown functionality are maintained for circuit compatibility.