AS1371-BTDT-25

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

The AS1371-BTDT-25 is a low-dropout linear regulator delivering up to 400mA with a fixed 2.5V output. It operates from an input voltage range of 1.2V to 3.6V and features ultra-low dropout characteristics, typically 80mV at maximum load. The device maintains high efficiency through a quiescent current of approximately 50µA under full load and reduces to 15µA at no load. Shutdown current is exceptionally low at 10nA. Output accuracy is specified at ±1% at 25°C. 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 management features including chip enable, power-good indication, and low-battery detection capabilities.
• Robust protection mechanisms safeguard against short circuits, thermal overload, and under-voltage conditions.
• Stable performance with ceramic capacitors as small as 1µF ensures minimal external component requirements.

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

• Powering portable processor cores in mobile phones and PDAs
• Supplying battery-powered devices such as digital cameras and MP3 players
• Extending battery life in cordless handsets and handheld computers

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

Verify the specific ordering suffix BTDT confirms tape and reel packaging for automated assembly. Confirm the final two digits indicate the fixed 2.5V output variant. Ensure compatibility with the 6-pin TDFN footprint during PCB layout. Check for RoHS compliance status if required by local regulations. Validate that the manufacturer's warranty terms apply to the specific batch received.

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

Select this component when system design requires a fixed 2.5V rail from a single-cell or dual-cell battery source. Consider the 400mA current limit for loads requiring moderate peak currents. Evaluate thermal dissipation requirements based on the difference between input voltage and 2.5V output. Ensure the application benefits from the low quiescent current to maximize battery runtime. Verify that the 6-pin package fits within the available board space constraints.

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

This part belongs to the AS1371 series of low-input voltage LDOs designed for portable electronics. The series offers various fixed output voltages ranging from 0.6V to 3.3V in 50mV steps. All variants share the same 6-pin TDFN package and core electrical architecture. The series targets applications demanding high efficiency and minimal component count in space-constrained environments.

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

Cross-reference tools may suggest alternatives from other manufacturers. Verify pin compatibility and output voltage accuracy before substitution. Ensure replacement parts meet the same thermal and current specifications. Review datasheets for differences in startup time and PSRR characteristics.