MAX17859GCB/V+CQP

Overview

The MAX17859GCB/V+CQP is a high-voltage, synchronous step-down DC/DC converter designed for automotive applications. It operates with an input voltage range of 4.5V to 60V and delivers up to 1A of output current. The device integrates a 120mΩ high-side switch and a 100mΩ low-side switch, achieving high efficiency across the load range. It features a fixed switching frequency of 500kHz, selectable via the FREQ pin, and supports adjustable output voltages from 0.8V to 30V. The component includes comprehensive protection mechanisms such as overcurrent protection, thermal shutdown, and reverse battery protection.

Feature Summary

• Integrated high-efficiency synchronous rectification with low on-resistance switches
• Robust automotive-grade design supporting wide input voltage ranges and transient conditions
• Built-in protection against overcurrent, thermal overload, and reverse polarity events

Applications

• Automotive infotainment systems
• Telematics control units
• Body control modules
• Industrial power distribution

Procurement Notes

Verify that the specific suffix 'CQP' aligns with AEC-Q100 Grade 1 qualification requirements for your target application environment. Confirm the package type matches your PCB footprint specifications. Ensure the operating temperature range meets system constraints. Cross-reference the manufacturer's latest datasheet for any revisions or compliance updates prior to finalizing procurement orders.

Selection Notes

Select this component when a robust, high-input voltage solution is required for automotive or industrial environments. The integrated synchronous design offers superior efficiency compared to external diode solutions. Consider the 500kHz switching frequency for balancing EMI performance and passive component size. Evaluate the thermal performance under maximum load conditions to ensure adequate heat dissipation within the enclosure.

Part Context

This part belongs to the MAX17859 family of high-voltage buck converters. It is engineered specifically for harsh automotive electrical environments, offering reliability beyond standard commercial grade components. The device simplifies design by integrating necessary control logic and protection features into a compact package, reducing the overall bill of materials and board space.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices official resources for direct replacements or pin-compatible alternatives.