CS5171GD8G

Overview

The CS5171GD8G is a switching voltage regulator manufactured by onsemi, featuring a 1.5 A integrated switch and high efficiency boost topology. It operates with current-mode control architecture and pulse width modulation technology. The device supports a wide input voltage range from 2.7 V to 30 V, with a nominal input of 3.3 V. It functions at a maximum switching frequency of 280 kHz. Packaged in an 8-pin SOIC (SOP8) format, it is lead-free and RoHS compliant.

Feature Summary

• Current-mode control architecture providing excellent load and line regulation
• High efficiency 1.5 A integrated power switch for compact designs
• Flexible operation across multiple power supply configurations including boost, flyback, forward, inverting, and SEPIC

Applications

• Boost converter circuits
• Flyback power supply designs
• Forward converter applications
• Inverting voltage regulator systems
• SEPIC power conversion setups

Procurement Notes

Verify component authenticity through authorized onsemi distributors or certified partners. Confirm package marking matches the SOIC-8 specification and check date codes against manufacturing records. Ensure compliance with RoHS standards and lead-free requirements as specified in official datasheets before integration into production lines.

Selection Notes

Select this component for applications requiring a wide input voltage range up to 30 V and high efficiency at 1.5 A output current. The 280 kHz switching frequency allows for smaller passive components compared to lower frequency alternatives. Consider the SOIC-8 package for space-constrained PCB layouts requiring surface mount technology.

Part Context

This part belongs to the CS5171/2/3/4 family of switching regulators. These devices share similar current-mode control architectures but differ in switching frequencies and specific configuration optimizations. The CS5171 variant specifically targets 280 kHz operations, distinguishing it from higher frequency siblings within the same product line.

Replacement Considerations

CS5171ED8G

FAQ

What control mode does the CS5171GD8G utilize?

It utilizes current-mode control architecture which allows for excellent load and line regulation.

Is the CS5171GD8G suitable for inverting topologies?

Yes, the design flexibility allows operation in most power supply configurations, including inverting, boost, flyback, forward, and SEPIC.