HIP6028CB

Overview

The HIP6028CB is a high-performance, synchronous buck switching regulator manufactured by Harris Corporation. It integrates two N-channel power MOSFETs and control circuitry into a single package to provide efficient step-down voltage conversion. The device operates with an input voltage range of 4.5 V to 32 V and delivers a continuous output current up to 1 A. It features adjustable output voltages from 1.2 V to 25 V via external resistors. Key operational parameters include a switching frequency selectable between 100 kHz and 500 kHz, soft-start capability to limit inrush current, and comprehensive protection mechanisms such as over-current, thermal shutdown, and undervoltage lockout.

Feature Summary

• Integrates dual N-channel power MOSFETs for high-efficiency synchronous rectification
• Supports wide input voltage range suitable for various bus architectures
• Includes programmable soft-start to manage startup transients
• Provides robust protection against over-temperature and over-current conditions

Applications

• Point-of-load regulation for digital signal processors
• Power supply modules for telecommunications equipment
• Battery-powered systems requiring efficient voltage stepping
• Industrial control boards needing stable low-voltage rails

Procurement Notes

Verify the specific suffix 'CB' corresponds to the plastic SOIC-28 package variant when sourcing replacements. Confirm that the component meets the required industrial temperature specifications if deployed in harsh environments. Ensure that the pinout configuration matches the target PCB footprint, as legacy Harris packages may differ from modern equivalents. Cross-reference the datasheet revision date to confirm compatibility with current design standards.

Selection Notes

Select this component when designing systems that require a compact, high-efficiency synchronous buck solution without external gate drivers. It is suitable for applications where board space is limited but high output current is necessary. Consider the trade-off between switching frequency and external component size; higher frequencies allow smaller inductors but may increase switching losses. Evaluate thermal performance based on the expected ambient temperature and load current to ensure reliable operation within the specified junction temperature limits.

Part Context

The HIP6028 series belongs to Harris Corporation's line of integrated switching regulators, designed to simplify power management in complex electronic systems. As a synchronous controller, it eliminates the need for external Schottky diodes, thereby improving overall system efficiency compared to traditional asynchronous designs. This family of components was widely used in the late 1990s and early 2000s for powering logic circuits and memory banks in computing and communication hardware before being superseded by newer generations of integrated power management ICs.

Replacement Considerations

Public confirmed substitute part numbers: HIP6028CBCZ, HIP6028CBZ.