AL1677-10BS-13 Equivalent & Substitute Parts

Part Overview

The AL1677-10BS-13 is an LED Driver IC manufactured by Diodes Incorporated, designed as a 1-output AC DC offline switcher with step-down (buck) topology. This component integrates an internal switch and operates at 1A output current, making it suitable for LED lighting applications. The part is currently active in production with 20,400 units in stock. Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameter ranges for this product category.

Substiute Parts

AL1677-10BS-13

Diodes IncorporatedIn Stock: 20457AL1677-10BS-13 Datasheet

Current PartRFQ

FL7701MX

Fairchild SemiconductorIn Stock: 5819FL7701MX Datasheet

MFR RecommendedRFQ

NCL30188BDR2G

onsemiIn Stock: 10327NCL30188BDR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AL1677-10BS-13 are qualified based on the following criteria:

Allowed Substitution Parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) — mechanical compatibility required
• Category: Power Management (PMIC) — functional category match
• Type: AC DC Offline Switcher — application class match
• Number of Outputs: 1 — single output configuration
• Voltage - Supply range overlap: minimum supply voltage ≥ 8.5V and maximum supply voltage ≥ 16.2V
• Current - Output / Channel: ≥ 1A or compatible for LED lighting applications
• Operating Temperature: minimum ≤ -40°C and maximum ≥ 105°C
• Product Status: Active — current production availability
• Compliance: ROHS3 Compliant and REACH Unaffected

Identified Substitutes:

1. FL7701MX (Fairchild Semiconductor) — Meets package, category, type, output count, supply voltage range, operating temperature, and compliance requirements. Topology includes step-down (buck) with analog dimming capability.
2. NCL30188BDR2G (onsemi) — Meets package, category, type, output count, supply voltage range (8.8V–25.5V), operating temperature, and compliance requirements. Topology supports multiple configurations including step-down (buck) with 500mA output current.

Parameter Comparison

Engineering Selection Recommendations

FL7701MX (Fairchild Semiconductor): This substitute maintains the step-down (buck) topology and 8-SOIC package footprint. Supply voltage range (9V–20V) encompasses the AL1677-10BS-13 operating window. Operating temperature extends to 125°C, exceeding the original specification. This part introduces analog dimming capability, which represents a functional enhancement for LED lighting applications. Product status is active with 5,753 units in stock.

NCL30188BDR2G (onsemi): This substitute provides a wider supply voltage range (8.8V–25.5V) and maintains the 8-SOIC package. Operating temperature reaches 125°C. The topology supports multiple converter configurations including step-down (buck), enabling flexible circuit design. Output current is specified at 500mA, which is lower than the AL1677-10BS-13 1A rating. Product status is active with 10,300 units in stock. ROHS3 compliance and MSL 3 rating are confirmed.

Both substitutes are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8542.39.0001, matching the original part's regulatory status.

Frequently Asked Questions (FAQ)

Q: Can FL7701MX directly replace AL1677-10BS-13 in existing designs? A: FL7701MX shares the same 8-SOIC package and AC DC offline switcher classification. Supply voltage range (9V–20V) covers the AL1677-10BS-13 operating window (8.5V–16.2V). The primary difference is the addition of analog dimming capability. Circuit validation is required to confirm output current and voltage specifications meet application requirements.

Q: What is the key limitation of NCL30188BDR2G as a substitute? A: NCL30188BDR2G specifies 500mA maximum output current, compared to AL1677-10BS-13 at 1A. Applications requiring full 1A output current cannot use this substitute without circuit redesign. The wider supply voltage range (8.8V–25.5V) and flexible topology support provide design flexibility for other applications.

Q: Are all three parts pin-compatible? A: All three parts use the 8-SOIC (0.154", 3.90mm Width) package. Pin compatibility depends on internal circuit design and control pin functionality. Datasheet review and PCB layout verification are required before substitution.

Q: Do the substitute parts meet the same compliance requirements? A: FL7701MX and NCL30188BDR2G are both ROHS3 compliant and REACH unaffected, matching AL1677-10BS-13 regulatory status. Both are classified under ECCN EAR99 and HTSUS 8542.39.0001. MSL 3 (168 Hours) is confirmed for NCL30188BDR2G; FL7701MX MSL rating is not provided in available data.

Q: Which substitute offers the best thermal performance? A: Both FL7701MX and NCL30188BDR2G operate to 125°C, exceeding AL1677-10BS-13 at 105°C. FL7701MX specifies ambient temperature (TA), while NCL30188BDR2G specifies junction temperature (TJ). Thermal performance depends on application power dissipation and PCB thermal design.