SC4524CSETRT Equivalent & Substitute Parts

Part Overview

The SC4524CSETRT is a buck switching regulator IC manufactured by Semtech Corporation, designed for positive adjustable output applications with a 2A output current capability. This device operates as a step-down converter with adjustable output voltage ranging from 1V to 26.88V and an input voltage range of 3V to 28V. The component is housed in an 8-SOIC package with exposed pad and features a switching frequency range of 200kHz to 2MHz.

The SC4524CSETRT has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications currently utilizing this regulator.

Substiute Parts

SC4524CSETRT

Semtech CorporationIn Stock: 61505SC4524CSETRT Datasheet

Current PartRFQ

NCV890200PDR2G

onsemiIn Stock: 20501NCV890200PDR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC4524CSETRT is determined by the following critical parameters:

Functional Compatibility Requirements:

• Topology: Buck (step-down) switching regulator
• Output configuration: Positive adjustable
• Number of outputs: Single output
• Output current rating: Minimum 2A
• Package type: 8-SOIC with exposed pad (identical footprint)
• Mounting type: Surface mount

Electrical Operating Range Compatibility:

• Input voltage range must encompass or exceed 3V to 28V
• Output voltage adjustability must support minimum 1V to maximum 26.88V range
• Switching frequency operation within 200kHz to 2MHz band
• Operating temperature range must support -40°C to 105°C minimum

The NCV890200PDR2G qualifies as a manufacturer-recommended substitute based on matching topology, output configuration, current rating, and identical package footprint. The substitute demonstrates enhanced electrical specifications and active product status.

Parameter Comparison

Engineering Selection Recommendations

The NCV890200PDR2G is the manufacturer-recommended substitute for the obsolete SC4524CSETRT. Selection of this substitute is supported by the following engineering factors:

Product Status and Availability: The SC4524CSETRT is obsolete with no ongoing production. The NCV890200PDR2G maintains active product status with documented inventory availability, ensuring long-term supply chain continuity.

Functional and Electrical Equivalence: Both devices implement identical buck converter topology with positive adjustable output configuration, single output, and 2A output current rating. The identical 8-SOIC package footprint with exposed pad enables direct PCB layout compatibility without redesign.

Enhanced Specifications: The NCV890200PDR2G provides expanded electrical operating ranges. The input voltage maximum of 36V exceeds the original 28V specification. The output voltage range of 0.8V to 34V encompasses the original 1V to 26.88V range. The maximum operating temperature of 150°C (junction) exceeds the original 105°C (ambient) specification.

Compliance and Qualification: The NCV890200PDR2G carries AEC-Q100 automotive qualification and ROHS3 compliance certification, providing enhanced reliability documentation and regulatory alignment for applications requiring these standards.

Design Considerations: Applications currently operating the SC4524CSETRT within the input voltage range of 4.5V to 28V and output voltage range of 0.8V to 26.88V can directly substitute the NCV890200PDR2G without circuit modification. The fixed 2MHz switching frequency of the substitute differs from the original 200kHz to 2MHz range; applications sensitive to switching frequency must evaluate this parameter against specific EMI and filtering requirements.

Frequently Asked Questions (FAQ)

Q: Can the NCV890200PDR2G be used as a direct replacement for the SC4524CSETRT?

A: Yes, for applications operating within compatible electrical ranges. Both devices share identical topology, output configuration, current rating, and package footprint. Direct PCB substitution is possible without layout modification. Verify that your application's input voltage range (minimum 4.5V for the substitute) and output voltage requirements fall within the NCV890200PDR2G specifications.

Q: What is the key difference in switching frequency between these devices?

A: The SC4524CSETRT operates across a programmable range of 200kHz to 2MHz, while the NCV890200PDR2G operates at a fixed 2MHz frequency. Applications requiring lower switching frequencies or frequency adjustment must evaluate whether fixed 2MHz operation is acceptable for EMI performance and component selection.

Q: Are there input voltage range limitations when substituting?

A: Yes. The NCV890200PDR2G requires a minimum input voltage of 4.5V, while the original SC4524CSETRT operates from 3V minimum. Applications with input voltages below 4.5V cannot use the NCV890200PDR2G substitute without circuit redesign.

Q: Does the package footprint remain identical?

A: Yes. Both devices use the 8-SOIC (0.154", 3.90mm Width) package with exposed pad. PCB footprints are identical, enabling direct component substitution without layout modification.

Q: What compliance certifications does the substitute provide?

A: The NCV890200PDR2G is AEC-Q100 qualified for automotive applications and ROHS3 compliant. The original SC4524CSETRT does not specify these certifications. Applications requiring automotive qualification or RoHS compliance benefit from the substitute's documented certifications.

Q: How do the output voltage ranges compare?

A: The SC4524CSETRT provides adjustable output from 1V to 26.88V. The NCV890200PDR2G provides adjustable output from 0.8V to 34V. The substitute's range encompasses the original specification, supporting all original output voltage requirements and extending capability to lower and higher voltages.

Q: What is the moisture sensitivity difference?

A: The SC4524CSETRT carries MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. The NCV890200PDR2G carries MSL 2 (1 Year) rating, requiring storage and handling within specified moisture conditions for one year from manufacturing. Applications with extended storage requirements must account for this difference in component handling procedures.