ILC6381AP-50

Voltage Regulators - DC DC Switching Regulators Overview

The Fairchild Semiconductor ILC6381AP-50 is a step-up DC-DC converter designed for single-cell to three-cell input applications. It provides a fixed 5V output and features true load disconnect from the battery input during shutdown mode. The device supports selectable PFM or PWM operating modes via the SEL pin, optimizing efficiency for varying load currents. It includes an internal oscillator set at 300kHz with no harmonics in the sub-20kHz audio band or 455kHz IF band. Key electrical characteristics include guaranteed startup at 0.9V input, peak efficiency exceeding 90%, and low battery input current of 1µA in shutdown.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• True load disconnect from battery input in shutdown mode
• User-selectable PFM or PWM operating mode
• Internal oscillator frequency of 300kHz without audio/IF band harmonics
• Guaranteed startup at 0.9V input voltage

Voltage Regulators - DC DC Switching Regulators Applications

• Cellular phones and pagers
• Palmtops and PDAs
• Portable electronics
• High efficiency 1V step-up converters

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'AP-50' against official Fairchild documentation to confirm package type and temperature range. Ensure compatibility with existing PCB footprints and thermal requirements. Cross-reference with the ILC6382 series if SYNC pin functionality is not required in the design.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a fixed 5V output from a 1-to-3 cell input source. Choose between PFM and PWM modes based on load current; PFM is suitable for loads below 100mA, while PWM is recommended for loads above 50mA or noise-sensitive environments. Consider the 300kHz switching frequency for EMI management.

Voltage Regulators - DC DC Switching Regulators Part Context

The ILC6381 series comprises step-up DC-DC converters intended for portable electronic devices. The ILC6381AP-50 specifically denotes the fixed 5V output variant. These devices are direct replacements for the ILC6382 in designs where the SYNC pin is unused. The series is engineered for high efficiency and low power consumption in battery-operated systems.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The ILC6382 is a compatible substitute in applications where the SYNC pin is not utilized. Verify that the replacement part supports the required fixed 5V output and matches the thermal and packaging specifications of the original design.