CS5171EDR8

Overview

The CS5171EDR8 is a switching voltage regulator manufactured by onsemi, designed as a high-efficiency boost converter. It supports an input voltage range from 2.7 V to 30 V and delivers a continuous output current of 1.5 A. The device operates at a fixed switching frequency of 280 kHz or 560 kHz, selectable via external components. It features an adjustable output voltage capability, reaching up to 40 V in switch mode applications. The IC is housed in an 8-SOIC surface-mount package and is rated for operation within a junction temperature range of -40°C to +125°C.

Feature Summary

• Integrated synchronous rectification architecture for enhanced conversion efficiency
• Fixed-frequency PWM control with selectable 280 kHz or 560 kHz operation
• Wide input voltage tolerance suitable for single-cell lithium battery systems

Applications

• Single-cell lithium-ion battery powered portable devices
• Industrial sensor node power supplies
• LED backlight drivers requiring step-up topology

Procurement Notes

Verify component authenticity through authorized distribution channels due to end-of-life status. Confirm RoHS compliance markings on physical units. Validate datasheet revision against manufacturing date codes to ensure design compatibility. Check for automotive qualification variants if operating in harsh environments.

Selection Notes

Select this component when a compact boost solution is required for low-voltage inputs. Compare against the NCV5171 series for automotive-grade requirements. Ensure thermal management aligns with the SOIC-8 package limitations under maximum load conditions.

Part Context

This part belongs to the CS517x family of 1.5 A boost regulators from onsemi. It shares architectural similarities with the CS5173 but differs in switching frequency options and internal compensation settings. The EDR8 suffix denotes the specific 8-pin SOIC tape-and-reel packaging configuration.

Replacement Considerations

Public confirmed substitute part numbers: CS5171EDR8G, NCV5171EDR2G.