CS1615-FZZR LED Driver IC Equivalent & Substitute Parts

Part Overview

The CS1615-FZZR is an LED driver IC manufactured by Cirrus Logic Inc., classified as a Power Management (PMIC) component. This device functions as a 1-output AC DC offline switcher with Flyback, Step-Down (Buck), and Step-Up (Boost) topologies, featuring Triac dimming capability for lighting applications. The part is currently obsolete, with 5885 units available in new original stock. Due to its obsolete status, identifying functionally equivalent substitute parts is necessary for ongoing design support and production continuity.

Substiute Parts

CS1615-FZZR

Cirrus Logic Inc.In Stock: 5985CS1615-FZZR Datasheet

Current PartRFQ

HV9801ANG-G

Microchip TechnologyIn Stock: 1909HV9801ANG-G Datasheet

MFR RecommendedRFQ

HV9922N8-G

Microchip TechnologyIn Stock: 25135HV9922N8-G Datasheet

MFR RecommendedRFQ

TPS92210D

Texas InstrumentsIn Stock: 1328TPS92210D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS1615-FZZR is determined by the following core parameters:

• Device Type: AC DC Offline Switcher for LED driver applications
• Number of Outputs: Single output configuration
• Dimming Capability: Triac dimming support
• Applications: Lighting
• Mounting Type: Surface Mount
• Operating Temperature Range: Minimum -40°C lower bound
• Regulatory Compliance: REACH Unaffected, EAR99 classification

The three substitute parts identified (HV9801ANG-G, HV9922N8-G, and TPS92210D) all meet these core substitution criteria. Each maintains AC DC offline switcher functionality with single output, Triac dimming capability, and lighting application suitability. Variations in topology (Buck vs. Flyback), supply voltage ranges, package types, and product status are secondary parameters that must be evaluated for specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

HV9801ANG-G (Microchip Technology) This substitute is active and ROHS3 compliant with unlimited moisture sensitivity. It operates across a wider supply voltage range (15V–450V) compared to the CS1615-FZZR (11V–17V). The primary distinction is PWM dimming instead of Triac dimming. This part is suitable for designs where PWM dimming control is acceptable and higher input voltage tolerance is beneficial.

HV9922N8-G (Microchip Technology) This substitute is active and ROHS3 compliant with unlimited moisture sensitivity. It maintains Triac dimming compatibility with the original part. The supply voltage range (20V–400V) exceeds the CS1615-FZZR specification. Operating temperature is limited to -40°C ~ 85°C, which is narrower than the original -40°C ~ 125°C range. The SOT-89-3 package differs from the 16-TSSOP footprint. This part is suitable for applications where Triac dimming is required and the reduced temperature range is acceptable.

TPS92210D (Texas Instruments) This substitute is active and ROHS3 compliant with unlimited moisture sensitivity. It maintains Triac dimming and Flyback topology alignment with the original part. The supply voltage range (9V–20V) closely overlaps the CS1615-FZZR specification (11V–17V). Operating temperature matches the original at -40°C ~ 125°C. The 8-SOIC package is significantly smaller than the 16-TSSOP footprint. This part is suitable for space-constrained designs requiring Triac dimming and Flyback topology.

All three substitutes carry REACH Unaffected and EAR99 classifications, matching the regulatory profile of the original part.

Frequently Asked Questions (FAQ)

Q: Why is the CS1615-FZZR obsolete, and what does this mean for my design? A: The CS1615-FZZR is classified as obsolete by the manufacturer, indicating it is no longer in active production. Existing inventory (5885 units) remains available, but long-term supply cannot be guaranteed. Designs should transition to active substitute parts to ensure future component availability.

Q: What is the primary difference between Triac and PWM dimming? A: Triac dimming uses phase-cut control of AC line voltage for brightness adjustment, while PWM dimming uses pulse-width modulation at a fixed frequency. The CS1615-FZZR and two of its substitutes (HV9922N8-G and TPS92210D) support Triac dimming. The HV9801ANG-G uses PWM dimming, which requires different circuit design considerations.

Q: Can I use HV9801ANG-G as a direct replacement if my circuit uses Triac dimming? A: No. The HV9801ANG-G uses PWM dimming instead of Triac dimming. While both are LED driver ICs, the dimming control method is fundamentally different and requires circuit redesign. Use HV9922N8-G or TPS92210D for Triac dimming compatibility.

Q: What are the package differences, and do they affect PCB layout? A: The CS1615-FZZR uses 16-TSSOP packaging. HV9801ANG-G uses 16-SOIC, HV9922N8-G uses SOT-89-3, and TPS92210D uses 8-SOIC. Each package has different pin counts, spacing, and footprints. PCB layout modifications are required for any package change. Verify footprint compatibility with your design tools before selection.

Q: Which substitute has the best temperature range compatibility? A: Both TPS92210D and HV9801ANG-G support the full -40°C ~ 125°C operating temperature range, matching the CS1615-FZZR specification. HV9922N8-G is limited to -40°C ~ 85°C, which may be insufficient for high-temperature applications.

Q: Are all substitutes RoHS3 compliant? A: Yes. HV9801ANG-G, HV9922N8-G, and TPS92210D are all ROHS3 compliant. The original CS1615-FZZR RoHS status is not specified in available documentation.

Q: What is the significance of Moisture Sensitivity Level (MSL)? A: MSL indicates the maximum time a component can be exposed to moisture before soldering. The CS1615-FZZR has MSL 3 (168 hours), while all substitutes have MSL 1 (unlimited). Lower MSL values provide greater handling flexibility and reduce risk of moisture-related failures during storage and assembly.

Q: Which substitute is best for my application? A: Selection depends on your specific requirements: Use TPS92210D if Triac dimming, Flyback topology, and full temperature range (-40°C ~ 125°C) are required. Use HV9922N8-G if Triac dimming is essential but reduced temperature range (-40°C ~ 85°C) is acceptable. Use HV9801ANG-G only if PWM dimming control is compatible with your circuit design and higher input voltage tolerance is beneficial.