AS1362-BTTT-45

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

The AS1362-BTTT-45 is a low-dropout linear regulator delivering up to 300mA continuous output current with a preset voltage of 4.5V. It features an ultra-low noise specification of 9µVRMS and a power-supply rejection ratio exceeding 80dB at 10kHz. The device operates within an input voltage range of 2V to 5.5V, maintaining stability with only a 1µF ceramic output capacitor. Quiescent current is minimized to 40µA, dropping below 500nA in shutdown mode. It includes integrated thermal protection and an active-low open-drain Power-OK indicator.

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 ensures extremely low quiescent current consumption
• Active-Low open-drain Power-OK output provides real-time regulation status monitoring
• Operates stably with small-value 1µF ceramic capacitors across the entire load range

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 the specific ordering code AS1362-BTTT-45 against manufacturer documentation to confirm the 4.5V preset output and 300mA load rating. Ensure compatibility with TSOT23 6-pin surface mount assembly processes. Confirm RoHS compliance and lead finish specifications prior to integration into production workflows.

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

Select this component when designing battery-powered systems requiring high efficiency and minimal ground current draw. The 4.5V fixed output suits applications needing direct regulation from single-cell lithium sources. Verify that the 1µF ceramic output capacitor meets X7R or X5R dielectric requirements to maintain stability across the full operating temperature range.

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

This part belongs to the AS1361/AS1362 series of ultra-low-noise LDOs designed for space-constrained mobile electronics. The AS1362 variant specifically supports higher continuous loads compared to the AS1361. The BTTT suffix indicates tape and reel packaging suitable for automated surface-mount manufacturing.

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

AS1361-BTTT-45 (150mA version)

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

What is the minimum required output capacitance for stability?

The device requires only a 1µF ceramic output capacitor for stability at any load condition.

How does the device indicate if the output voltage is out of regulation?

An active-Low, open-drain Power-OK (POK) output pin signals when the voltage drops below approximately 94% of the nominal value.