RT7322CJGSP Equivalent & Substitute Parts

Part Overview

The RT7322CJGSP is a linear LED driver IC manufactured by Richtek USA Inc., designed for single-output LED lighting applications with a fixed 20mA output current. This device operates across a wide supply voltage range of 1V to 90V and is housed in an 8-SOIC package with exposed pad. The RT7322CJGSP has reached obsolete product status, making identification of functionally equivalent alternatives necessary for ongoing design support and component procurement.

Substiute Parts

RT7322CJGSP

Richtek USA Inc.In Stock: 1115RT7322CJGSP Datasheet

Current PartRFQ

AL5801W6-7

Diodes IncorporatedIn Stock: 18288AL5801W6-7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT7322CJGSP is determined by the following critical parameters:

• Functional Type: Linear LED driver with single output
• Output Current Capability: Minimum 20mA required for direct replacement
• Supply Voltage Range: Must accommodate the application's input voltage requirements
• Dimming Capability: Fixed output (no dimming) or PWM-capable alternatives
• Package Compatibility: Surface mount packages suitable for board-level integration
• Product Status: Active alternatives preferred for long-term availability

The AL5801W6-7 from Diodes Incorporated qualifies as a substitute based on shared functional classification as a linear LED driver IC with single output, active product status, and surface mount packaging. However, key parameter differences exist that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The AL5801W6-7 is suitable as a substitute for the obsolete RT7322CJGSP in applications where the following conditions are met:

• Supply Voltage Compatibility: The application supply voltage must fall within the AL5801W6-7 range of 4.6V to 20V. The RT7322CJGSP's extended lower limit of 1V and upper limit of 90V cannot be matched by this substitute.
• Current Requirements: The AL5801W6-7 provides 350mA output capability, exceeding the RT7322CJGSP's 20mA specification. This allows for higher-power LED applications or multiple LED strings.
• Package Transition: The AL5801W6-7 uses SOT-23-6 packaging versus the RT7322CJGSP's 8-SOIC package. PCB layout redesign is required.
• Compliance Status: Both devices maintain ROHS3 compliance and are suitable for regulated supply chains.
• Thermal Performance: The AL5801W6-7 supports extended operating temperature range (-40°C to 125°C) compared to the RT7322CJGSP (-40°C to 85°C), providing improved thermal margin.
• Moisture Handling: The AL5801W6-7 features MSL 1 (unlimited moisture sensitivity level) versus MSL 3 for the RT7322CJGSP, reducing storage and handling constraints.

Frequently Asked Questions (FAQ)

Q: Can the AL5801W6-7 directly replace the RT7322CJGSP without circuit modifications?

A: Direct pin-for-pin replacement is not possible due to different package types (SOT-23-6 versus 8-SOIC). Circuit redesign and PCB layout changes are required. Additionally, the AL5801W6-7's PWM dimming capability and higher current output may require application circuit adjustments.

Q: What is the primary limitation when substituting with the AL5801W6-7?

A: The AL5801W6-7 operates within a 4.6V to 20V supply range, whereas the RT7322CJGSP supports 1V to 90V. Applications requiring supply voltages below 4.6V or above 20V cannot use the AL5801W6-7 as a substitute.

Q: Does the AL5801W6-7 require different handling procedures?

A: The AL5801W6-7 has MSL 1 (unlimited) compared to the RT7322CJGSP's MSL 3 (168 hours). This represents an improvement in moisture tolerance, reducing special storage and handling requirements.

Q: Are both devices RoHS compliant?

A: Yes, both the RT7322CJGSP and AL5801W6-7 are ROHS3 compliant and suitable for regulated supply chains.

Q: What is the output current difference between these devices?

A: The RT7322CJGSP provides fixed 20mA output, while the AL5801W6-7 delivers 350mA. The higher current capability of the AL5801W6-7 enables applications with higher-power LEDs or multiple LED configurations.

Q: Can dimming functionality be added when using the AL5801W6-7?

A: The AL5801W6-7 includes integrated PWM dimming capability, unlike the RT7322CJGSP which has no dimming function. This feature is available without additional external components.