AS1374-BWLT1818

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

The AS1374-BWLT1818 is a dual low dropout regulator from ams-OSRAM USA INC. It provides two independent outputs of 1.8V each, delivering up to 200mA per channel. The device operates with an input voltage range of 2V to 5.5V and achieves a typical dropout voltage of 120mV at full load. It features ultra-low output noise of 20µVRMS and high power-supply rejection ratio exceeding 85dB at 1kHz. Quiescent current is extremely low at 30µA. Stability is maintained using only 1µF ceramic capacitors on both inputs and outputs.

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

• Dual independent regulated outputs with active-high enable pins for individual control
• Ultra-low noise architecture achieving 20µVRMS output noise across the specified bandwidth
• High power-supply rejection ratio exceeding 85dB at 1kHz for effective ripple attenuation
• Optimized for stability with small 1µF ceramic capacitors under any load condition

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

• Mobile phones and wireless communication devices
• Bluetooth portable radios and accessories
• Digital cameras and personal audio devices
• Battery-powered handheld computers and PDAs

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

Verify the specific ordering code AS1374-BWLT1818 against the manufacturer's official documentation to confirm the 1.8V/1.8V preset configuration. Ensure compatibility with the required 6-bump WLP package dimensions during PCB layout. Confirm that the application environment remains within the specified -40°C to +85°C operating temperature range for guaranteed electrical performance.

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

Select this component when space-constrained designs require dual isolated rails with minimal external components. The P-channel MOSFET pass transistor design ensures extended battery life through low quiescent current consumption. Verify that the system input voltage stays within the 2V to 5.5V range and that the load requirements do not exceed the 200mA continuous limit per channel.

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

This part belongs to the AS1374 series of ultra-low-noise linear regulators designed specifically for portable electronics. The series offers various preset voltage combinations in 50mV steps, all housed in a compact 6-bump Wafer Level Package. The technology focuses on minimizing board space while maintaining high performance metrics suitable for sensitive analog circuits in mobile applications.

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

Consult the manufacturer's ordering information for alternative voltage configurations such as AS1374-BWLT1833 or AS1374-BWLT1218 if different output levels are required. Direct pin-compatible substitutes from other manufacturers should be evaluated carefully regarding noise specifications and capacitor stability requirements.