LTC3899IFE#PBF

DC DC Switching Controllers Overview

The LTC3899IFE#PBF is a synchronous switching controller featuring three independent outputs: one boost and two buck converters. It operates from an input voltage range of 4.5 V to 60 V, maintaining operation down to 2.2 V after startup. The device supports output voltages from 800 mV to 60 V with up to 15 A current capability per channel. Quiescent current is 39 uA, and the switch frequency ranges from 105 kHz to 835 kHz. Load regulation is specified at 0.01%. It functions within a temperature range of -40°C to +125°C and utilizes a TSSOP-EP-38 package.

DC DC Switching Controllers Feature Summary

• Integrates one boost and two buck converter channels for flexible power topology configurations.
• Maintains low quiescent current during operation to extend battery life in portable systems.
• Supports continuous conduction mode where the boost MOSFET remains on to minimize power loss when input exceeds regulated output.

DC DC Switching Controllers Applications

• Automotive always-on systems requiring wide input voltage tolerance.
• Battery-operated digital devices needing efficient multi-rail power management.
• Distributed DC power systems utilizing mixed buck and boost topologies.

DC DC Switching Controllers Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the required thermal and electrical specifications. Review the latest datasheet for any recent design changes or pinout updates. Ensure compatibility with your PCB footprint and thermal management strategy before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems requiring simultaneous buck and boost regulation from a single high-voltage rail. Consider the 60 V maximum input rating and the ability to handle inputs exceeding the boosted output voltage. Evaluate the need for low standby current and the specific frequency range requirements for your passive component selection.

DC DC Switching Controllers Part Context

This part belongs to the LTC3899 series of low IQ triple output controllers. It complements other Analog Devices PMICs like the LTC3890 and LTC3891 by offering combined step-down and step-up capabilities in a single package, suitable for complex power architectures.

DC DC Switching Controllers Replacement Considerations

LTC3899HFE#PBF serves as a direct replacement with extended temperature ratings up to +150°C. Verify that the higher thermal grade meets your application's environmental constraints without altering the electrical interface or pinout configuration.