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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 CS5173EDR8 is a switching regulator IC manufactured by onsemi, designed for high-efficiency power conversion. It supports multiple topologies including boost, buck, flyback, forward, and SEPIC configurations. The device features an adjustable output voltage starting from 1.28V with a maximum switch voltage rating of 40V. It delivers a continuous output current of 1.5A at a fixed switching frequency of 560kHz. The input voltage range spans from 2.7V to 30V. Housed in an 8-SOIC package, it operates within a junction temperature range of -40°C to 125°C.
Feature Summary
- Supports versatile power conversion topologies including boost, buck, flyback, forward, and SEPIC.
- Provides adjustable output voltage capability with a minimum setting of 1.28V.
- Integrates a 1.5A switch current capacity for moderate load applications.
- Operates at a fixed 560kHz switching frequency to optimize component size.
Applications
- Battery-powered portable devices requiring efficient voltage step-up or step-down.
- Industrial control systems utilizing SEPIC or flyback converter architectures.
- Automotive electronics operating within wide input voltage ranges.
- General-purpose DC-DC conversion in embedded systems.
Procurement Notes
Verify the specific suffix 'G' if lead-free compliance is required, as the base part number may indicate non-RoHS status in some distributor listings. Confirm availability status as the component is listed as obsolete or end-of-life by the manufacturer. Ensure the 8-SOIC package dimensions match the target PCB footprint. Cross-reference the datasheet revision to confirm electrical characteristics against the specific production lot.
Selection Notes
Select this component when a single IC must support multiple converter topologies such as boost, buck, or SEPIC. It is suitable for designs requiring an input voltage up to 30V and an output current of 1.5A. Consider the fixed 560kHz frequency for inductor selection. Verify that the 8-SOIC package is compatible with the assembly process. Check thermal performance requirements given the 125°C junction temperature limit.
Part Context
The CS5173 belongs to the CS517x family of switching regulators from onsemi, which includes variants like the CS5174. These components are classified under PMIC DC-DC switching regulators. The family is designed for flexible power management solutions. The CS5173 specifically focuses on multi-topology support. It shares similar pinouts and control mechanisms with related parts in the series.
Replacement Considerations
CS5174EDR8: Similar topology support but may differ in specific electrical parameters or pinout compatibility. Verify datasheet details before substitution. CS5173EDR8G: Lead-free version of the same component; functionally equivalent but compliant with RoHS directives.
