AS1356-33-T

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

The AS1356-33-T is a fixed-voltage linear low-dropout regulator (LDO) manufactured by ams AG, delivering a nominal output of 3.3V with a maximum load current of 150mA. It operates within an input voltage range of 2.5V to 5.5V and maintains an output voltage accuracy of ±1% at 25°C. The device features ultra-low dropout characteristics, achieving 40mV at a 100mA load. It includes integrated power-OK circuitry for monitoring regulation status, reverse-battery protection, and thermal shutdown capabilities. The component is housed in a 5-pin SOT23 package.

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

• Integrated Power-OK open-drain output indicates out-of-regulation conditions
• Ultra-low dropout voltage performance under varying load currents
• Reverse-battery protection disconnects internal circuitry during incorrect polarity
• Active-low shutdown mode reduces supply current to less than 1µA

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

• Powering microprocessors in handheld devices
• Battery-powered portable electronics
• Mobile phone systems
• Digital cameras and PDAs

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

Verify the specific ordering suffix matches the required tape and reel configuration. Confirm the manufacturer designation aligns with ams AG or its successor entities, as austriamicrosystems AG has undergone corporate restructuring. Ensure the component lot corresponds to the specified 5-pin SOT23 package dimensions and marking codes for proper integration into the target assembly process.

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

Select this regulator when a stable 3.3V rail is required for loads up to 150mA with minimal external components. The AS1356 variant is preferred over the AS1353 if system-level supervision of the output voltage via the Power-OK pin is necessary. Ensure the application utilizes ceramic capacitors with low ESR to maintain stability across the full operating temperature range.

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

This component belongs to the AS1353/AS1356 family of high-performance linear LDOs designed for battery-operated applications. The series distinguishes itself through the use of an integrated P-channel MOSFET pass transistor, which eliminates base-drive currents associated with PNP-based regulators. This architecture enables superior quiescent current performance and consistent operation even under low dropout conditions.

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

Public confirmed substitute part numbers are not available in the provided documentation.