RT9711GS Equivalent & Substitute Parts

Part Overview

The RT9711GS is an active power switch IC manufactured by Richtek USA Inc., designed for USB switching applications. This N-channel power switch operates as a 1:1 high-side driver with 1.5A maximum output current and integrated status flag functionality. The device is currently in active production status and widely used in power distribution and load switching circuits where reliable USB power management is required. Equivalent parts are identified when design requirements necessitate alternative sourcing, inventory constraints, or specific packaging preferences while maintaining electrical and mechanical compatibility.

Substiute Parts

RT9711GS

Richtek USA Inc.In Stock: 1017RT9711GS Datasheet

Current PartRFQ

MIC2544A-1YM-TR

Microchip TechnologyIn Stock: 1936MIC2544A-1YM-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The MIC2544A-1YM-TR qualifies as an equivalent substitute for the RT9711GS based on the following critical parameters:

Matching Electrical Characteristics:

• Switch type: USB Switch (identical)
• Output configuration: High Side N-Channel (identical)
• Number of outputs: 1 (identical)
• Input:Output ratio: 1:1 (identical)
• Maximum output current: 1.5A (identical)
• Interface: On/Off control (identical)
• Input type: Non-Inverting (identical)
• Status flag feature: Present (identical)

Compatible Mechanical Specifications:

• Package type: 8-SOIC with identical physical dimensions (0.154", 3.90mm Width)
• Surface mount technology (identical)
• Supplier device package: 8-SOIC (identical)

Regulatory Compliance:

• RoHS3 compliant (both parts)
• REACH unaffected status (both parts)
• ECCN classification: EAR99 (both parts)

Substitution is valid within the overlapping voltage and temperature operating ranges specified in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

RT9711GS Selection Criteria:

• Applications requiring maximum operating temperature up to 125°C (junction temperature)
• Designs requiring fixed current limiting with reverse current and UVLO protection
• Load voltage applications at 2.5V minimum threshold
• Primary sourcing when inventory availability is confirmed

MIC2544A-1YM-TR Selection Criteria:

• Applications operating within -40°C to 85°C ambient temperature range
• Designs where lower on-resistance (80mOhm vs 90mOhm) provides thermal or efficiency benefits
• Environments with high humidity or extended storage periods (MSL 1 vs MSL 3)
• Load voltage applications at 2.7V minimum threshold
• Alternative sourcing when RT9711GS availability is limited

Both parts maintain active product status and full RoHS3 compliance. Selection between these devices depends on specific application temperature requirements, protection feature needs, and load voltage minimums.

Frequently Asked Questions (FAQ)

Q: Can MIC2544A-1YM-TR directly replace RT9711GS in existing designs?

A: Direct replacement is valid for applications where load voltage remains at or above 2.7V and operating temperature does not exceed 85°C. The identical 8-SOIC package footprint and matching electrical characteristics (1:1 ratio, 1.5A output, high-side N-channel configuration) enable pin-compatible substitution. Designs operating below 2.7V load voltage or above 85°C require the RT9711GS.

Q: What are the key differences in fault protection between these parts?

A: RT9711GS provides four protection mechanisms: fixed current limiting, over-temperature shutdown, reverse current blocking, and UVLO (under-voltage lockout). MIC2544A-1YM-TR provides adjustable current limiting and over-temperature protection. Applications requiring reverse current or UVLO protection must use RT9711GS.

Q: Are there packaging differences between these parts?

A: Both parts use 8-SOIC surface mount packages with identical physical dimensions (0.154" width, 3.90mm). RT9711GS is supplied in standard packaging, while MIC2544A-1YM-TR is supplied in Tape & Reel format. The footprint and pinout are identical for PCB assembly purposes.

Q: How do the on-resistance specifications affect circuit performance?

A: MIC2544A-1YM-TR has 80mOhm typical on-resistance compared to RT9711GS at 90mOhm. At maximum 1.5A output current, this 10mOhm difference results in approximately 15mW lower power dissipation in the MIC2544A. For thermal-sensitive applications, the lower on-resistance may provide marginal benefits.

Q: What is the moisture sensitivity impact on storage and handling?

A: RT9711GS has MSL 3 rating (168-hour floor life after moisture exposure), while MIC2544A-1YM-TR has MSL 1 rating (unlimited floor life). For high-volume manufacturing or extended storage in humid environments, MIC2544A-1YM-TR requires less stringent moisture control during assembly.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. For designs operating at 2.5V load voltage or requiring temperatures above 85°C, RT9711GS is mandatory. For designs within 2.7V to 5.5V load voltage and -40°C to 85°C temperature range, either part is acceptable. MIC2544A-1YM-TR offers advantages in moisture tolerance and on-resistance performance.