AS1358-BTTT-15

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

The AS1358-BTTT-15 is a low-dropout linear regulator from the AS1358/AS1359 series, manufactured by ams-OSRAM USA INC. It provides a fixed 1.5V output with a maximum continuous load current of 150mA. The device features an ultra-low noise specification of 9µVRMS and a power-supply rejection ratio exceeding 80dB up to 10kHz. It operates within an input voltage range of 2V to 5.5V and achieves a dropout voltage as low as 70mV at 150mA. The regulator includes integrated overcurrent and thermal protection, maintains a quiescent current of 40µA, and enters a shutdown mode consuming less than 500nA. It is housed in a TSOT23 5-pin package.

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

• Ultra-low noise performance with 9µVRMS output noise for sensitive analog circuits
• Integrated P-channel MOSFET pass transistor ensures extremely low quiescent current
• Advanced architecture delivers high power-supply rejection ratio across frequency ranges
• Includes built-in overcurrent limiting and thermal shutdown protection mechanisms

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
• Wireless LANs and handheld computers

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

Verify that the specific ordering code matches the required output voltage and load current specifications. Confirm the package type aligns with the PCB footprint requirements. Ensure compliance with RoHS standards if applicable to the manufacturing process. Review the datasheet for absolute maximum ratings to prevent operational stress during design integration.

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

Select this component when designing battery-powered systems requiring minimal power consumption and stable voltage regulation. The low dropout characteristic allows operation near the end-of-life battery voltage. Verify capacitor selection guidelines to ensure stability with ceramic capacitors. Consider the thermal resistance characteristics for proper heat dissipation in compact enclosures.

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-limited applications. The AS1358 variant specifically supports up to 150mA output current, distinguishing it from the higher-capacity AS1359. These regulators utilize a bandgap reference and error amplifier to maintain precise output voltages. The series is optimized for use with small-capacitance ceramic capacitors to minimize board space.

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

Cross-reference tools may suggest compatible alternatives from other manufacturers. Verify functional equivalence regarding pinout, electrical parameters, and package dimensions before substitution. Consult official datasheets to confirm compatibility with existing circuit designs and environmental operating conditions.