MP174GS Equivalent & Substitute Parts

Part Overview

The MP174GS is an offline switch IC designed for power management applications supporting multiple converter topologies including Boost, Buck, Buck-Boost, and Flyback configurations. This component operates as a non-isolated PMIC with integrated fault protection and soft start control features. The MP174GS is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Active alternatives with identical or compatible electrical specifications are available from the same manufacturer.

Substiute Parts

MP174GS

Monolithic Power Systems Inc.In Stock: 1963MP174GS Datasheet

Current PartRFQ

MP174AGS-Z

Monolithic Power Systems Inc.In Stock: 25505MP174AGS-Z Datasheet

DirectRFQ

MP174AGJ-Z

Monolithic Power Systems Inc.In Stock: 47449MP174AGJ-Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP174GS is determined by strict equivalence across the following critical parameters:

• Voltage - Breakdown: 700V (exact match required)
• Topology Support: Boost, Buck, Buck-Boost, Flyback (all topologies must be supported)
• Voltage - Supply (Vcc/Vdd): 5.3V ~ 5.6V (exact match required)
• Power (Watts): 5 W (exact match required)
• Fault Protection: Open Loop, Over Load, Over Temperature, Short Circuit (all protections must be present)
• Control Features: Soft Start (required)
• Operating Temperature: -40°C ~ 125°C (TJ) (exact match required)
• Output Isolation: Non-Isolated (exact match required)
• Internal Switch(s): No (exact match required)
• Mounting Type: Surface Mount (required)
• RoHS Status: ROHS3 Compliant (required)
• REACH Status: REACH Unaffected (required)

Package variations are permitted when all electrical and functional parameters remain identical. The MP174GS (8-SOIC package) has two qualified substitutes: MP174AGS-Z (8-SOIC package) and MP174AGJ-Z (TSOT-23-5 package).

Parameter Comparison

Engineering Selection Recommendations

Both MP174AGS-Z and MP174AGJ-Z are active products from Monolithic Power Systems Inc. and provide complete functional equivalence to the obsolete MP174GS across all critical electrical parameters.

MP174AGS-Z maintains identical packaging (8-SOIC) to the original MP174GS, providing direct footprint compatibility for PCB designs. This part is the preferred choice for existing designs requiring minimal layout modifications.

MP174AGJ-Z offers an alternative in TSOT-23-5 packaging with improved moisture sensitivity characteristics (MSL 1 vs. MSL 2), providing extended shelf life and reduced moisture-related handling requirements. This package option is suitable for new designs where space constraints or environmental durability are considerations.

Both substitutes carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Selection between MP174AGS-Z and MP174AGJ-Z depends on packaging requirements and PCB layout constraints rather than electrical performance.

Frequently Asked Questions (FAQ)

Q: Can MP174AGS-Z directly replace MP174GS in existing designs?

A: Yes. MP174AGS-Z is electrically and functionally identical to MP174GS with matching 8-SOIC packaging. No circuit modifications are required.

Q: What is the primary difference between MP174AGS-Z and MP174AGJ-Z?

A: The primary difference is packaging format. MP174AGS-Z uses 8-SOIC (0.154", 3.90mm Width) while MP174AGJ-Z uses SOT-23-5 Thin (TSOT-23-5). Both are electrically equivalent. MP174AGJ-Z also features improved moisture sensitivity (MSL 1 vs. MSL 2).

Q: Are there any electrical performance differences between the three parts?

A: No. All three parts—MP174GS, MP174AGS-Z, and MP174AGJ-Z—share identical electrical specifications including voltage ratings, topology support, power handling, fault protection, and operating temperature range.

Q: Which substitute should I use for new PCB designs?

A: For new designs, either MP174AGS-Z or MP174AGJ-Z is acceptable. MP174AGJ-Z in TSOT-23-5 packaging offers superior moisture handling (MSL 1) and may provide space advantages. MP174AGS-Z maintains the original 8-SOIC footprint if layout compatibility is preferred.

Q: Are both substitutes available in the same packaging options?

A: No. MP174AGS-Z is available in Cut Tape (CT) and Digi-Reel packaging. MP174AGJ-Z packaging format is not specified in the provided data. Verify packaging availability with your supplier for specific procurement requirements.

Q: Do the substitutes meet current compliance standards?

A: Yes. Both MP174AGS-Z and MP174AGJ-Z are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.