CS5174GDR8G

Overview

The CS5174GDR8G is a negative boost regulator manufactured by onsemi, designed for high-efficiency power conversion. It operates with an input voltage range of 2.7 V to 30 V and delivers a switch current of 1.5 A. The device features a fixed switching frequency of 560 kHz and supports adjustable output voltages down to -2.45 V, with a maximum switch voltage rating of -40 V. It utilizes current-mode control and pulse width modulation techniques. The component is housed in an 8-SOIC narrow body package and is rated for junction temperatures between 0°C and 125°C.

Feature Summary

• Implements current-mode control architecture with pulse width modulation for stable regulation.
• Supports multiple converter topologies including boost, buck, flyback, forward, and SEPIC configurations.
• Provides synchronous rectification capability without external components.
• Operates within a wide thermal range suitable for industrial applications.

Applications

• Negative voltage generation for analog circuits
• Bias supply creation for operational amplifiers
• LCD panel backlight driver power supplies
• Industrial sensor interface power conditioning

Procurement Notes

Verify the specific suffix GDR8G against the official datasheet to confirm pinout and packaging dimensions. Confirm RoHS compliance status as indicated in the manufacturer documentation. Check for obsolescence notices or product change notifications prior to final design approval. Ensure the supplier provides valid traceability documents for quality assurance purposes.

Selection Notes

Select this component when a negative voltage rail is required from a positive source. The 1.5 A switch current capacity suits moderate load applications. The 560 kHz frequency allows for smaller passive components compared to lower frequency alternatives. Verify that the input voltage range covers the system's minimum operating conditions.

Part Context

This part belongs to the CS517x series of switching regulators from onsemi. The series includes variants such as CS5171, CS5172, and CS5173, which share similar control architectures but may differ in specific electrical ratings or feature sets. The CS5174 specifically targets negative boost applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer for direct replacements or cross-reference guides if availability is critical.