AL1771T16E-13 LED Driver IC Equivalent & Substitute Parts

Part Overview

The AL1771T16E-13 is a linear PWM LED driver IC manufactured by Diodes Incorporated, designed for single-output lighting applications. This device operates across a 6.5V to 30V supply range with 1.5A output current capability and 120kHz PWM dimming frequency. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. Substitute parts must maintain functional compatibility in linear LED driver topology while accommodating variations in output current, supply voltage range, and package form factor.

Substiute Parts

AL1771T16E-13

Diodes IncorporatedIn Stock: 1211AL1771T16E-13 Datasheet

Current PartRFQ

BD8374HFP-MTR

Rohm SemiconductorIn Stock: 4819BD8374HFP-MTR Datasheet

MFR RecommendedRFQ

CL6N5-G

Microchip TechnologyIn Stock: 1271CL6N5-G Datasheet

MFR RecommendedRFQ

MAX16835ATE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1037MAX16835ATE+T Datasheet

MFR RecommendedRFQ

MAX16836ATE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2087MAX16836ATE+T Datasheet

MFR RecommendedRFQ

NSIC2030JBT3G

onsemiIn Stock: 52772NSIC2030JBT3G Datasheet

MFR RecommendedRFQ

TLD1120ELXUMA1

Infineon TechnologiesIn Stock: 1784TLD1120ELXUMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the AL1771T16E-13 is based on the following critical parameters:

Primary Compatibility Criteria:

• Single output linear LED driver topology
• PWM dimming capability
• Supply voltage range overlap with 6.5V minimum and 30V maximum
• Output current capacity (1.5A reference)
• Surface mount packaging
• Operating temperature range -40°C to 125°C or higher
• ROHS3 compliance and MSL rating

Grouping Strategy: Substitute parts are grouped by output current capacity and supply voltage compatibility. Parts with lower output current (100mA to 500mA) are suitable for lower-power LED applications. Parts with higher output current (350mA to 360mA) provide closer current matching. All substitutes maintain linear topology and PWM dimming functionality. Package form factors vary (16-TSSOP, HRP-7, TO-220-3, 16-TQFN) to accommodate different PCB layout requirements and thermal management needs.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Highest Compatibility): MAX16836ATE+T and MAX16835ATE+T are active, automotive-grade alternatives with matching 6.5V minimum supply voltage and extended 40V maximum rating. Both maintain ROHS3 compliance and MSL-1 rating. The 16-TQFN package requires PCB layout modification from the original 16-TSSOP form factor. These parts feature internal switches and are suitable for applications requiring automotive qualification.

For Lower Current Applications: BD8374HFP-MTR (500mA) and TLD1120ELXUMA1 (360mA) accommodate reduced LED current requirements. BD8374HFP-MTR extends supply voltage to 42V and includes automotive qualification. TLD1120ELXUMA1 operates to 150°C junction temperature with automotive grade but carries MSL-3 moisture sensitivity. Both are active products with established supply chains.

For Through-Hole PCB Designs: CL6N5-G provides a through-hole alternative in TO-220-3 package with extended 90V maximum supply voltage. Output current is limited to 100mA, suitable only for low-power LED applications. This part is active and ROHS3 compliant but lacks automotive qualification.

Compliance Considerations: All substitute parts maintain ROHS3 compliance. Automotive-grade substitutes (BD8374HFP-MTR, MAX16835ATE+T, MAX16836ATE+T, TLD1120ELXUMA1) carry AEC-Q100 qualification. Non-automotive substitutes (CL6N5-G) are suitable for industrial and consumer lighting applications.

Frequently Asked Questions (FAQ)

Q: Can MAX16836ATE+T directly replace AL1771T16E-13 without circuit modification? A: MAX16836ATE+T maintains functional compatibility in linear PWM LED driver topology with matching 6.5V minimum supply voltage and PWM dimming. However, package change from 16-TSSOP to 16-TQFN (5x5) requires PCB layout redesign. Output current is reduced from 1.5A to 350mA, limiting application to lower-power LED strings.

Q: What is the primary limitation of CL6N5-G as a substitute? A: CL6N5-G is a through-hole TO-220-3 package component with 100mA maximum output current, suitable only for low-power LED applications. The original AL1771T16E-13 supports 1.5A output, making CL6N5-G unsuitable for high-current LED driver applications.

Q: Are all substitute parts automotive-qualified? A: No. BD8374HFP-MTR, MAX16835ATE+T, MAX16836ATE+T, and TLD1120ELXUMA1 carry automotive grade and AEC-Q100 qualification. CL6N5-G lacks automotive qualification and is suitable for industrial and consumer applications only.

Q: What is the significance of MSL-3 rating on TLD1120ELXUMA1? A: MSL-3 indicates 168-hour moisture sensitivity level, requiring controlled storage and handling conditions. The original AL1771T16E-13 and most substitutes carry MSL-1 (unlimited) rating, allowing standard storage without moisture control. TLD1120ELXUMA1 requires bake-out procedures before reflow soldering if storage exceeds 168 hours at specified humidity levels.

Q: Which substitute offers the closest current matching to AL1771T16E-13? A: BD8374HFP-MTR at 500mA provides the highest output current among active substitutes, though still below the original 1.5A specification. For applications requiring higher current, multiple AL1771T16E-13 devices or alternative high-current LED driver architectures must be evaluated.

Q: Can substitutes operate across the full 6.5V to 30V supply range of AL1771T16E-13? A: BD8374HFP-MTR extends to 42V maximum. MAX16835ATE+T and MAX16836ATE+T extend to 40V maximum. CL6N5-G extends to 90V maximum. TLD1120ELXUMA1 extends to 40V maximum. All substitutes support the 6.5V minimum requirement. Applications requiring operation above 30V should select BD8374HFP-MTR, MAX series, or CL6N5-G.

Q: What package considerations apply when selecting a substitute? A: AL1771T16E-13 uses 16-TSSOP surface mount. BD8374HFP-MTR uses HRP-7 (7-lead with tab). MAX16835ATE+T and MAX16836ATE+T use 16-TQFN (5x5). TLD1120ELXUMA1 uses 14-LSSOP. CL6N5-G uses TO-220-3 through-hole. Package selection impacts PCB layout, thermal management, and assembly process compatibility.