ILC6390CM-33

Voltage Regulators - DC DC Switching Regulators Overview

The ILC6390CM-33 is a step-up DC-DC converter manufactured by Fairchild Semiconductor. It operates from a single-cell to three-cell input and features a fixed 3.3V output. The device supports user-selectable Pulse Frequency Modulation (PFM) or Pulse Width Modulation (PWM) modes via the SEL pin. It includes synchronous rectification, eliminating the need for an external diode, and offers true load disconnect in shutdown mode. Designed for wireless communications, it minimizes electromagnetic interference.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture removes the requirement for an external Schottky diode
• True load disconnect capability isolates the battery input during shutdown
• User-selectable PFM or PWM operating modes optimize efficiency based on load conditions
• Integrated low battery detector with transient rejection delay

Voltage Regulators - DC DC Switching Regulators Applications

• Cellular phones and pagers
• Palmtops and PDAs
• Portable electronics requiring high-efficiency voltage conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'CM-33' against official Fairchild documentation to confirm package type and temperature range. Ensure compatibility with system requirements for synchronous boost topology. Cross-reference datasheet revisions to validate electrical characteristics and pinout assignments before integration.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring efficient step-up conversion from low-voltage sources. The choice between PFM and PWM should align with specific load current demands and noise sensitivity constraints. Consider the fixed 3.3V output constraint when designing power rails for downstream logic circuits.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ILC638x series of single-cell to three-cell boost converters. It serves as a direct replacement for the ILC6382 in designs where the SYNC pin functionality is not utilized. The series is engineered for portable devices needing compact solutions with minimal external component counts.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The ILC6382 is a confirmed substitute within the same family, provided the SYNC pin is unused. Verify that the application does not require external synchronization signals incompatible with the ILC6390's internal oscillator configuration.