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Product Detailed Parameters
- Description：IC REG BUCK BOOST ADJ 1.5A 8SOIC
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR)
- Function：Step-Up
- Output Configuration：Negative
- Topology：Buck, Boost, Flyback, Forward Converter, SEPIC
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.7V
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：-2.45V
- Voltage - Output (Max)：-40V (Switch)
- Current - Output：1.5A (Switch)
- Frequency - Switching：560kHz
- Synchronous Rectifier：No
- Operating Temperature：0°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The CS5174GDR8 is a negative boost regulator IC from 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
- Negative boost topology supporting buck, flyback, forward, and SEPIC configurations
- Current-mode control with pulse width modulation for stable regulation
- Integrated thermal shutdown and short circuit protection mechanisms
Applications
- Portable battery-powered equipment requiring negative rail generation
- Industrial systems needing isolated or negative supply rails
- Automotive electronics utilizing single-battery architectures
Procurement Notes
Verify the specific suffix 'G' for lead-free and RoHS compliance status against the latest manufacturer documentation. Confirm the package variant matches the required SOIC-8 dimensions. Check for obsolescence notices as this part may be discontinued. Ensure the ordering code aligns with the desired reel quantity and tape-and-reel specifications.
Selection Notes
Select this component when a negative output voltage is required from a positive input source within the specified range. Consider the 1.5 A switch current limit for load requirements. Evaluate the 560 kHz frequency for inductor size trade-offs. Verify that the operating temperature range meets the application's environmental constraints.
Part Context
The CS5174 belongs to a family of high-efficiency boost regulators from onsemi. It shares architectural similarities with the CS5171, CS5172, and CS5173 models, differing primarily in pinout or feature sets. These devices are commonly used in applications requiring efficient step-up conversion with minimal external components.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided data. Consult the manufacturer's datasheet for direct replacements or functional equivalents within the CS517x series.
