LTC3899EFE#PBF

DC DC Switching Controllers Overview

The LTC3899EFE#PBF is a synchronous switching controller featuring three independent output stages: 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 start-up. The device supports output voltages up to 60 V with a maximum output current of 15 A per channel. Key electrical parameters include a quiescent current of 39 uA, a programmable switching frequency between 105 kHz and 835 kHz, and a load regulation of 0.01%. It utilizes a TSSOP-EP-38 package and functions within a temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Integrates one boost and two buck converter channels for flexible multi-rail power generation
• 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-voltage regulation
• Distributed DC power systems utilizing mixed step-down and step-up topologies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix PBF confirms lead-free compliance and RoHS standards before procurement. Confirm the TSSOP-EP-38 package type matches your PCB footprint requirements. Ensure the supplier provides valid traceability documentation for Analog Devices components. Cross-reference the manufacturer part number against official distributor catalogs to avoid counterfeit parts.

DC DC Switching Controllers Selection Notes

Select this component when designing systems requiring simultaneous buck and boost regulation from a single high-voltage rail. The low IQ specification makes it suitable for battery-powered applications where standby power consumption is critical. Consider the thermal performance of the exposed pad package for high-current buck applications. Verify that the external MOSFET selection aligns with the controller's gate drive capabilities and switching frequency settings.

DC DC Switching Controllers Part Context

This controller belongs to the LTC3899 series, designed for high-efficiency power management in demanding environments. It complements other Analog Devices PMIC solutions by offering mixed topology control in a compact form factor. The device addresses the need for versatile power conversion in automotive and industrial sectors where input voltages fluctuate significantly.

DC DC Switching Controllers Replacement Considerations

LTC3859EFE#PBF serves as a verified alternative within the same family, offering similar triple-output buck/boost functionality.