RT9300AGE LED Driver IC Equivalent & Substitute Parts

Part Overview

The RT9300AGE is an active linear LED driver IC manufactured by Richtek USA Inc., designed for 4-output PWM dimming applications with 20mA per-channel output capability. This Surface Mount device in SOT-23-6 packaging operates across a 2.5V to 5.5V supply range and is ROHS3 compliant with MSL-3 moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

RT9300AGE

Richtek USA Inc.In Stock: 2718RT9300AGE Datasheet

Current PartRFQ

TPS75100DSKR

Texas InstrumentsIn Stock: 5935TPS75100DSKR Datasheet

SimilarRFQ

AP2502KTR-G1

Diodes IncorporatedIn Stock: 141878AP2502KTR-G1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RT9300AGE are qualified based on the following critical parameters:

• Functional Type: Linear LED driver with PWM dimming capability
• Output Configuration: 4-channel output architecture
• Current Rating: Minimum 20mA per channel (equal or greater)
• Supply Voltage Compatibility: Overlapping or encompassing voltage range (2.5V to 5.5V nominal)
• Dimming Control: PWM-based dimming functionality
• Mounting Technology: Surface Mount devices
• Compliance: ROHS3 compliant, active product status
• Internal Switching: Integrated switch functionality required

Two substitute parts meet these criteria: TPS75100DSKR (Texas Instruments) and AP2502KTR-G1 (Diodes Incorporated). Both maintain the 4-output linear architecture, PWM dimming, and ROHS3 compliance. Differences in package form factor, current rating, and supply voltage minimums are documented in the parameter comparison.

Parameter Comparison

Engineering Selection Recommendations

AP2502KTR-G1 (Diodes Incorporated) provides the closest functional and mechanical equivalence to RT9300AGE. Both devices share identical package form factor (SOT-23-6), matching 20mA per-channel current rating, equivalent operating temperature range, and identical MSL-3 moisture sensitivity classification. Supply voltage range for AP2502KTR-G1 (2V to 6V) encompasses the RT9300AGE specification (2.5V to 5.5V). This part is ROHS3 compliant and maintains active product status.

TPS75100DSKR (Texas Instruments) qualifies as a functional substitute with the following considerations: it maintains 4-output PWM dimming architecture and ROHS3 compliance with active product status. The TPS75100DSKR provides higher per-channel current capability (25mA versus 20mA) and superior moisture sensitivity (MSL-1 unlimited versus MSL-3). However, the package differs significantly (10-WFDFN Exposed Pad versus SOT-23-6), requiring PCB layout redesign and different assembly processes. Supply voltage minimum is 2.7V, which is 0.2V higher than RT9300AGE.

Both substitute parts maintain compliance certifications (ROHS3, REACH Unaffected, EAR99) and active product status matching the original part.

Frequently Asked Questions (FAQ)

Q: Can AP2502KTR-G1 directly replace RT9300AGE without PCB modification?

A: Yes. Both parts use SOT-23-6 packaging with identical pinout compatibility for 4-output LED driver applications. No PCB layout changes are required for mechanical or electrical substitution within the specified parameter ranges.

Q: What is the primary limitation of TPS75100DSKR as a substitute?

A: Package form factor differs fundamentally. TPS75100DSKR uses 10-WFDFN Exposed Pad (2.5x2.5mm) versus RT9300AGE SOT-23-6. This requires PCB redesign, different footprint, and modified assembly procedures. Electrical functionality remains compatible for 4-output PWM dimming applications.

Q: Are all three parts ROHS3 compliant?

A: Yes. RT9300AGE, TPS75100DSKR, and AP2502KTR-G1 are all ROHS3 compliant with active product status and REACH Unaffected certification.

Q: Which substitute offers the widest supply voltage range?

A: AP2502KTR-G1 operates from 2V to 6V, providing the broadest supply voltage envelope. RT9300AGE operates 2.5V to 5.5V, and TPS75100DSKR operates 2.7V to 5.5V.

Q: Does higher current rating (25mA) in TPS75100DSKR provide an advantage?

A: Higher current capability allows greater LED brightness or additional parallel LED strings per channel. However, this is only advantageous if the application design requires it. For designs specified at 20mA per channel, both 20mA and 25mA rated devices are functionally equivalent.

Q: What is the moisture sensitivity difference between these parts?

A: RT9300AGE and AP2502KTR-G1 are MSL-3 (168-hour floor life). TPS75100DSKR is MSL-1 (unlimited floor life), indicating superior moisture resistance and longer shelf stability without baking requirements.