AS1371-SAMPLE

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

The AS1371 is a low-dropout linear regulator designed for applications requiring high efficiency from single-cell power sources. It delivers up to 400mA output current with an ultra-low quiescent current of typically 15µA at no load and 50µA at full load. The device operates within an input voltage range of 1.2V to 3.6V, supporting fixed output voltages from 0.6V to 3.3V in 50mV increments. Key electrical characteristics include a maximum dropout voltage of 80mV at 400mA and output voltage accuracy of ±1%. Integrated protections include overcurrent limiting, thermal shutdown at 150°C, and under-voltage lockout.

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

• Ultra-low dropout voltage enables efficient operation with minimal input-to-output voltage differentials.
• Integrated Power-OK comparator provides status indication for out-of-regulation conditions.
• Advanced protection mechanisms include thermal overload shutdown and short-circuit current limiting.
• Low shutdown current allows for extended battery life in portable electronic devices.

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

• Powering mobile phones and cordless telephones
• Supplying portable media players such as MP3 and CD/DVD units
• Operating hand-held computers and PDAs
• Powering digital cameras and other battery-powered consumer electronics

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

Verify the specific ordering suffix to confirm the required fixed output voltage, as standard variants are factory-set between 0.6V and 3.3V. Confirm package availability matches the 6-pin TDFN requirement. Ensure design accounts for thermal dissipation limits based on PCB copper area and ambient temperature conditions during procurement planning.

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

Select this component when system requirements demand minimal voltage headroom from a single primary cell or low-voltage rail. Evaluate the need for the Power-OK feature; if unused, the pin can remain unconnected. Consider the 6-pin TDFN package constraints regarding thermal management and soldering profiles. Verify that the required output voltage step aligns with available factory-set options or custom requests.

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

The AS1371 belongs to a family of low-input voltage LDO regulators manufactured by austriamicrosystems (now ams OSRAM). It is specifically engineered for portable electronics where battery longevity and small form factors are critical. The device utilizes a P-channel MOSFET pass element to achieve superior dropout performance compared to NPN-based alternatives.

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

Direct substitutes must match the 6-pin TDFN footprint and 400mA current capability. Verify compatibility of control logic levels for the Enable and Power-OK pins. Ensure replacement parts support the same 1.2V minimum input voltage and offer comparable thermal protection thresholds.