AS1363-BSTT-33

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

The AS1363-BSTT-33 is a low-dropout linear voltage regulator from Austria Micro Systems. It operates with an input voltage range of +2.0V to +5.5V and delivers a guaranteed load current of 500mA. The device features a fixed output voltage of 3.3V, which is internally trimmed for high accuracy. Key electrical parameters include a typical dropout voltage of 150mV at full load, a quiescent current of 40µA, and a shutdown supply current of 30nA. It incorporates thermal overload protection, output current limiting, and a Power-OK (POK) open-drain indicator.

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

• Fixed 3.3V output voltage with internal trimming for precision regulation
• Integrated P-channel pass transistor enabling low dropout performance
• Active-low open-drain Power-OK output for system status monitoring
• Built-in short-circuit and thermal shutdown protection mechanisms

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

• Portable battery-operated equipment
• Mobile phones and cordless phones
• Laptops and PDAs
• Portable audio devices

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

Verify the specific ordering code AS1363-BSTT-33 against the manufacturer's official documentation to confirm the fixed 3.3V output configuration. Ensure compatibility with the required 6-pin SOT23 package form factor. Confirm that the application environment remains within the specified operating temperature range of -40°C to +85°C. Check for any RoHS compliance requirements relevant to the target market.

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

Select this component when a stable 3.3V rail is required for battery-powered portable electronics. The low quiescent current makes it suitable for extending battery life in standby modes. Consider the 6-pin SOT23 package constraints for PCB layout. Evaluate the thermal dissipation capabilities if the input-output voltage differential is high under maximum load conditions.

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

This part belongs to the AS1363 series of low-dropout linear regulators designed by Austria Micro Systems. The series offers both fixed and adjustable output versions to accommodate various system voltage requirements. The BSTT suffix indicates the tape and reel delivery format, while the '33' designates the specific 3.3V fixed output variant within the product line.

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

AS1363-BSTT-30 (3.0V Fixed)

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

How does the AS1363-BSTT-33 indicate power failure?

It uses an active-low open-drain Power-OK (POK) output pin that goes low when the output voltage falls below the regulation threshold.

What is the typical shutdown current for this regulator?

The typical shutdown supply current is 30nA when the Enable (EN) pin is connected to ground.