AL1782T16E-13 Equivalent & Substitute Parts

Part Overview

The AL1782T16E-13 is a linear LED driver IC manufactured by Diodes Incorporated, designed for 2-output PWM dimming applications in lighting systems. This device operates across a 6.5V to 30V supply range with 1.5A per-channel output capability and is housed in a 16-TSSOP package with exposed pad. The part is currently classified as obsolete, making identification of functionally compatible alternatives essential for ongoing design support and production continuity.

Substiute Parts

AL1782T16E-13

Diodes IncorporatedIn Stock: 1067AL1782T16E-13 Datasheet

Current PartRFQ

AL1783T16E-13

Diodes IncorporatedIn Stock: 5934AL1783T16E-13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AL1782T16E-13 is determined by the following critical parameters:

• Package Compatibility: Both parts must use the 16-TSSOP (0.173", 4.40mm Width) Exposed Pad package to ensure PCB layout and thermal management compatibility.
• Dimming Technology: PWM dimming capability is required for functional equivalence in lighting control applications.
• Operating Temperature Range: The -40°C ~ 125°C specification must be maintained or exceeded.
• Supply Voltage Range: The substitute must operate within or encompass the 6.5V to 30V range.
• Manufacturer Alignment: Parts from the same manufacturer (Diodes Incorporated) ensure design consistency and support continuity.
• Compliance Standards: RoHS3 compliance and MSL Level 1 rating must be maintained.

The AL1783T16E-13 qualifies as a substitute based on these criteria, despite differences in output count and per-channel current rating.

Parameter Comparison

Engineering Selection Recommendations

The AL1783T16E-13 is available as an active product from Diodes Incorporated, providing immediate procurement advantage over the obsolete AL1782T16E-13. Both devices maintain identical compliance certifications (ROHS3, MSL Level 1) and operate across the same temperature range.

Selection of the AL1783T16E-13 requires circuit-level evaluation of the following design parameters:

• Output Channel Count: The AL1783T16E-13 provides 3 outputs versus 2 on the AL1782T16E-13. Designs requiring exactly 2 channels must account for the additional output or confirm that unused channels can be disabled or left unconnected per the device datasheet.
• Per-Channel Current Capacity: The AL1783T16E-13 delivers 125mA per channel compared to 1.5A on the AL1782T16E-13. Applications requiring 1.5A per channel cannot use this substitute without external current amplification or parallel channel configuration.
• Supply Voltage Range: The AL1783T16E-13 extends the maximum supply voltage to 60V, providing broader system compatibility while maintaining the 6.5V minimum.

The identical package footprint, PWM dimming capability, and thermal specifications ensure mechanical and functional compatibility at the board level.

Frequently Asked Questions (FAQ)

Q: Can the AL1783T16E-13 directly replace the AL1782T16E-13 in existing designs?

A: Direct replacement is possible only if the application does not require 1.5A per-channel output. The AL1783T16E-13 is rated for 125mA per channel. If the original design draws 1.5A per channel, the substitute will not meet current requirements. Additionally, designs using only 2 channels must confirm that the third output on the AL1783T16E-13 can be safely managed in the application.

Q: Are the packages identical?

A: Yes. Both the AL1782T16E-13 and AL1783T16E-13 use the 16-TSSOP (0.173", 4.40mm Width) Exposed Pad package. PCB layouts and thermal management designs are directly compatible.

Q: What is the significance of the AL1782T16E-13 being obsolete?

A: Obsolete status indicates the part is no longer manufactured or supported by Diodes Incorporated. The AL1783T16E-13, classified as active, is currently in production and available through authorized distributors, ensuring long-term supply chain stability.

Q: Do both parts support PWM dimming?

A: Yes. Both the AL1782T16E-13 and AL1783T16E-13 implement PWM dimming for lighting control applications. Dimming control circuitry and signal compatibility are equivalent.

Q: Are there compliance or environmental differences between these parts?

A: No. Both parts are ROHS3 compliant, carry MSL Level 1 rating (unlimited moisture sensitivity), and operate across the identical -40°C ~ 125°C temperature range. Compliance certifications and environmental specifications are equivalent.

Q: What supply voltage range should be used with the AL1783T16E-13?

A: The AL1783T16E-13 operates from 6.5V to 60V. While the AL1782T16E-13 maximum was 30V, the substitute's extended range to 60V provides design flexibility. Existing designs operating at 30V or below remain fully compatible.