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Product Detailed Parameters
- Description：IC REG BUCK BOOST ADJ 1.5A 8SOIC
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Up
- Output Configuration：Positive
- 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)：1.28V
- Voltage - Output (Max)：40V (Switch)
- Current - Output：1.5A (Switch)
- Frequency - Switching：560kHz
- Synchronous Rectifier：No
- Operating Temperature：-40°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 CS5173EDR8G is a switching voltage regulator manufactured by onsemi, classified under PMIC - Power Management ICs. It features a boost topology with an adjustable output voltage ranging from 1.28V to 40V and supports a maximum switch current of 1.5A. The device operates within an input voltage range of 2.7V to 30V at a fixed switching frequency of 560kHz. It is housed in an 8-SOIC package (0.154" width) and functions as a synchronous rectifier-free converter. The component is rated for a junction temperature range of -40°C to 125°C.
Feature Summary
- Supports multiple power conversion topologies including boost, buck, flyback, forward, and SEPIC configurations.
- Provides adjustable output voltage capability across a wide dynamic range.
- Operates with a fixed internal switching frequency for consistent performance.
Applications
- General-purpose DC-DC power supply designs requiring flexible topology selection
- Battery-powered systems utilizing boost or buck-boost architectures
- Industrial control circuits needing isolated or non-isolated voltage regulation
Procurement Notes
Verify the End-of-Life (EOL) status prior to procurement, as the component has been declared obsolete by the manufacturer. Confirm that alternative sources are available if long-term supply continuity is required for production. Ensure compatibility with existing PCB footprints and thermal management strategies when transitioning from active inventory to last-time buy quantities.
Selection Notes
Select this component for applications requiring a single IC solution capable of implementing various converter topologies such as boost, buck, or SEPIC. Consider the 1.5A current limit and 560kHz switching frequency when designing passive components. Evaluate the SOIC-8 package constraints for thermal dissipation and board space. Verify input voltage ranges align with the source power supply characteristics.
Part Context
The CS5173EDR8G belongs to the CS517x series of switching regulators from onsemi. This series is designed for versatile power management tasks, allowing designers to configure different converter types using external components. It falls under the broader category of DC-DC switching regulators used in portable and industrial electronics.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Due to the EOL status, engineering teams should evaluate functional equivalents from other manufacturers or newer generations within the onsemi portfolio that support similar topologies and electrical specifications.
