AS1356-27-T

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

The AS1356-27-T is a fixed-voltage linear low-dropout regulator (LDO) from the AS1353/AS1356 series, manufactured by ams OSRAM USA INC. It provides a nominal output voltage of 2.7V with a maximum output current capability of 150mA. The device utilizes an integrated P-channel MOSFET pass transistor to maintain low supply currents under varying load conditions. Key electrical specifications include an output voltage accuracy of ±1% at 25°C and a typical dropout voltage of 40mV at a 100mA load. It operates within an input voltage range of 2.5V to 5.5V and features a shutdown mode with a maximum current consumption of less than 1µA.

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

• Integrated Power-OK circuitry providing an active-low open-drain output to monitor regulation status
• Built-in reverse-battery protection that disconnects internal circuitry upon incorrect polarity connection
• Comprehensive protection mechanisms including thermal overload shutdown and output short-circuit current limiting

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

• Powering microprocessors in handheld devices
• Supplying power to mobile phones and cordless telephones
• Energy management for digital cameras and MP3 players

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

Verify the specific ordering suffix matches the required tape and reel delivery form. Confirm the part number corresponds to the 2.7V fixed output variant. Ensure compatibility with the 5-pin SOT23 package dimensions during PCB layout. Cross-reference the manufacturer designation as austriamicrosystems AG or ams AG for accurate documentation retrieval.

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

Select this component when a stable 2.7V rail is required for battery-powered systems. The inclusion of the Power-OK pin makes it suitable for applications needing system reset monitoring. Consider the thermal resistance characteristics if operating near maximum load currents. Verify that the external capacitor selection meets the stability requirements for the desired temperature range.

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

This LDO belongs to the AS1353/AS1356 family designed for ultra-low dropout performance. The AS1356 variant specifically adds the Power-OK feature compared to the AS1353 model. Both share identical pinouts and core protection features while differing only in the additional monitoring output. The series targets portable electronics requiring efficient power management from single-cell lithium-ion sources.

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

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