CS5156GD16

Special Purpose Regulators Overview

The CS5156GD16 is a CPU 5-bit nonsynchronous N-channel buck controller designed for high-density, high-speed logic applications. It operates within a VCC input range of 4.25V to 16V, utilizing 12V for IC power and 5.0V as the main supply. The device features over 1.0 MHz operation with a 100 ns transient response time and 30 ns gate rise/fall times. It includes a 5-bit DAC with 1.0% accuracy, remote sense, programmable soft start, lossless short circuit protection, VCC monitor, adaptive voltage positioning, current sharing, and overvoltage protection.

Special Purpose Regulators Feature Summary

• Utilizes proprietary V2 control topology for rapid load transient response
• Integrates a 5-bit digital-to-analog converter (DAC) for precise voltage regulation
• Supports parallel operation through built-in current sharing capabilities
• Includes comprehensive protection mechanisms such as lossless short circuit and overvoltage protection

Special Purpose Regulators Applications

• Intel Pentium II processor voltage regulation
• High-density server power supplies
• High-speed logic circuit power management

Special Purpose Regulators Procurement Notes

Verify component authenticity by checking the manufacturer's official documentation and part markings. Confirm that the specific suffix GD16 corresponds to the 16-SOIC package variant. Ensure compliance with RoHS standards if required for the target assembly process. Cross-reference the datasheet revision date to ensure design compatibility with current specifications.

Special Purpose Regulators Selection Notes

Select this controller when designing for processors requiring fast transient response and precise voltage tracking. The 5-bit DAC offers finer resolution than 4-bit predecessors like the CS5151. Consider the nonsynchronous design for cost-sensitive or specific thermal applications where synchronous rectification is not mandated. Ensure the input voltage range aligns with the system's 12V and 5V rails.

Special Purpose Regulators Part Context

The CS5156 series represents an evolution in CPU core voltage regulation, succeeding earlier 4-bit controllers. It is backward compatible with the CS5150 and CS5151 families, facilitating easier upgrades in existing designs. The device is part of onsemi's portfolio of specialized PMICs tailored for demanding computing platforms requiring high performance and reliability.

Special Purpose Regulators Replacement Considerations

The CS5151GD16 is documented as a backward-compatible predecessor. Verify pinout and functional equivalence before substitution. No other direct substitutes are confirmed in public data.