LTC3862HFE

DC DC Switching Controllers Overview

The LTC3862HFE-1#PBF is a multi-phase current mode step-up DC/DC controller manufactured by Analog Devices Inc. It operates within an input voltage range of 8.5 V to 36 V and supports Boost and SEPIC topologies. The device features a fixed switching frequency of 300 kHz, a maximum duty cycle of 96%, and a quiescent current of 30 uA. It is housed in a TSSOP-EP-24 package with exposed pad for surface mount installation. The component is rated for extended industrial temperatures from -40°C to +150°C.

DC DC Switching Controllers Feature Summary

• Supports multiphase current mode control for high-power boost applications
• Enables clock synchronization for noise reduction and phase alignment
• Includes integrated soft-start functionality to limit inrush current

DC DC Switching Controllers Applications

• High-voltage diesel fuel injector actuator power supplies
• Multiphase high-power step-up DC/DC converters
• Industrial distributed power systems requiring wide input ranges

DC DC Switching Controllers Procurement Notes

Verify the specific suffix (e.g., HFE-1 vs HFE-2) against the design requirements, as variants differ in input voltage thresholds and temperature ratings. Confirm availability status through authorized distributors, as supply may be limited or subject to factory special orders. Ensure the selected package matches the PCB footprint specifications for the TSSOP-EP-24 form factor.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring high efficiency at elevated output voltages. The HFE variant offers an extended operating temperature range up to 150°C compared to standard versions. Consider the 300 kHz fixed frequency for EMI management and external component sizing. Verify that the gate drive capability matches the external MOSFET selection for the intended load current.

DC DC Switching Controllers Part Context

This component belongs to the LTC3862 family of multiphase boost controllers designed for demanding power conversion tasks. It serves as a core power management IC for generating high voltages from lower input sources. The family includes variants optimized for different thermal and electrical constraints, supporting complex multi-stage converter architectures.

DC DC Switching Controllers Replacement Considerations

LTC3862IFE-1#PBF: Similar function but limited to +125°C max operating temperature. LTC3862EFE-1#PBF: Standard commercial grade version with lower thermal limits. Verify pin compatibility and thermal performance when substituting.