CS1616-FSZ LED Driver IC Equivalent & Substitute Parts

Part Overview

The CS1616-FSZ is an LED Driver IC manufactured by Cirrus Logic Inc., designed for AC DC offline switching applications with Triac dimming capability. This component operates across a 11V to 17V supply range and supports multiple topologies including Flyback, Step-Down (Buck), and Step-Up (Boost) configurations for lighting applications.

The CS1616-FSZ is classified as Obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for lighting systems utilizing this topology.

Substiute Parts

CS1616-FSZ

Cirrus Logic Inc.In Stock: 1645CS1616-FSZ Datasheet

Current PartRFQ

AL9901FDF-13

Diodes IncorporatedIn Stock: 8972AL9901FDF-13 Datasheet

MFR RecommendedRFQ

LNK408EG

Power IntegrationsIn Stock: 17174LNK408EG Datasheet

MFR RecommendedRFQ

RT7310GE

Richtek USA Inc.In Stock: 35468RT7310GE Datasheet

MFR RecommendedRFQ

TPS92411DDA

Texas InstrumentsIn Stock: 1805TPS92411DDA Datasheet

MFR RecommendedRFQ

UCC28811DR

Texas InstrumentsIn Stock: 35727UCC28811DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS1616-FSZ is determined by the following critical parameters:

Primary Substitution Criteria:

• Type: AC DC Offline Switcher
• Topology: Flyback, Step-Down (Buck), Step-Up (Boost)
• Number of Outputs: 1
• Dimming: Triac
• Applications: Lighting
• Mounting Type: Surface Mount

Secondary Compatibility Factors:

• Voltage Supply Range: Minimum 11V and Maximum 17V or higher
• Operating Temperature Range: Minimum -40°C and Maximum 125°C or higher
• Package compatibility: Surface Mount packages (SOIC, SOT-23, DFN, or equivalent)

Substitute parts must maintain AC DC offline switching capability with Triac dimming support for lighting applications. Parts are grouped based on topology alignment and electrical parameter compatibility within the specified operating envelope.

Parameter Comparison

Engineering Selection Recommendations

LNK408EG (Power Integrations) is the primary substitute candidate. This part maintains Triac dimming capability, Flyback topology alignment, and Active product status. Operating temperature range extends to 150°C, exceeding the original specification. Supply voltage range (36V to 725V) accommodates the 11V to 17V requirement. Through-hole mounting differs from the original surface mount configuration and requires PCB layout modification.

RT7310GE (Richtek USA Inc.) provides topology and dimming compatibility with Active product status. Supply voltage range (12V to 25V) encompasses the original 11V to 17V specification. Surface mount SOT-23-6 package maintains PCB compatibility. Operating temperature maximum of 85°C falls below the original 125°C specification. MSL rating of 3 matches the original part.

UCC28811DR (Texas Instruments) supports Triac dimming and multi-topology operation with Active product status. Supply voltage maximum of 18V covers the original range. Surface mount 8-SOIC package maintains footprint compatibility. Operating temperature range (-40°C to 105°C) is below the original specification. MSL rating of 1 provides superior moisture handling.

TPS92411DDA (Texas Instruments) offers multi-topology support and Active product status. Supply voltage range (7.5V to 100V) encompasses the original specification. Surface mount 8-PowerSOIC package maintains compatibility. Operating temperature extends to 150°C. Dimming specification is not provided in available data.

AL9901FDF-13 (Diodes Incorporated) is limited to Step-Down (Buck) topology, restricting substitution applicability. Supply voltage minimum of 15V exceeds the original 11V minimum. Active product status and superior MSL rating of 1 are advantageous. Surface mount 12-UDFN package differs from the original footprint.

Frequently Asked Questions (FAQ)

Q: Can the CS1616-FSZ be directly replaced with any of these substitute parts?

A: Direct replacement depends on circuit topology requirements. Parts maintaining Flyback, Step-Down (Buck), and Step-Up (Boost) topology support (LNK408EG, RT7310GE, TPS92411DDA, UCC28811DR) are more broadly compatible than AL9901FDF-13, which supports only Step-Down (Buck) topology.

Q: What is the significance of Triac dimming compatibility?

A: Triac dimming is a specific control method for lighting applications. Substitute parts must support Triac dimming to maintain compatibility with existing dimmer circuits. LNK408EG, RT7310GE, and UCC28811DR explicitly support Triac dimming. AL9901FDF-13 supports Analog and PWM dimming, requiring circuit redesign. TPS92411DDA dimming specification is not provided.

Q: How do package differences affect substitution?

A: The original CS1616-FSZ uses 16-SOIC packaging. RT7310GE (SOT-23-6), UCC28811DR (8-SOIC), and TPS92411DDA (8-PowerSOIC) use different surface mount packages requiring PCB layout modification. LNK408EG uses through-hole eSIP-7C packaging, necessitating significant PCB redesign. AL9901FDF-13 uses 12-UDFN packaging, also requiring layout changes.

Q: What are the supply voltage considerations for substitution?

A: The original part operates at 11V to 17V. RT7310GE (12V to 25V) and UCC28811DR (up to 18V) most closely match this range. LNK408EG (36V to 725V), TPS92411DDA (7.5V to 100V), and AL9901FDF-13 (15V to 500V) have wider ranges but may require circuit adjustment for optimal performance at the original operating point.

Q: Why is product status important in substitution?

A: The CS1616-FSZ is Obsolete, making long-term supply unavailable. All substitute candidates (AL9901FDF-13, LNK408EG, RT7310GE, TPS92411DDA, UCC28811DR) are Active products, ensuring ongoing availability and manufacturing support for future production runs.

Q: What does MSL rating mean for component handling?

A: Moisture Sensitivity Level (MSL) indicates storage and handling requirements. MSL 1 (Unlimited) parts like LNK408EG, UCC28811DR, and AL9901FDF-13 require no special moisture control. MSL 3 parts (RT7310GE, matching the original) and MSL 2 parts (TPS92411DDA) require controlled storage environments and have limited shelf life after packaging opening.

Q: Are all substitute parts RoHS compliant?

A: All substitute candidates are RoHS3 Compliant or RoHS Compliant. The original CS1616-FSZ RoHS status is not specified. All substitutes meet current environmental and regulatory requirements for electronic component manufacturing and distribution.