TS19603CS RLG Equivalent & Substitute Parts

Part Overview

The TS19603CS RLG is a linear LED driver IC manufactured by Taiwan Semiconductor Corporation, designed for single-output backlight applications with 400mA output capability. This component operates across a 5V to 50V supply range and delivers 12V output, making it suitable for LED backlighting in consumer electronics and display applications.

The TS19603CS RLG is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain compatibility with the original electrical specifications while accommodating modern component availability and supply chain considerations.

Substiute Parts

TS19603CS RLG

Taiwan Semiconductor CorporationIn Stock: 711TS19603CS RLG Datasheet

Current PartRFQ

AL5809-20S1-7

Diodes IncorporatedIn Stock: 150354AL5809-20S1-7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TS19603CS RLG requires evaluation based on the following critical electrical and mechanical parameters:

Functional Compatibility Criteria:

• Linear topology with internal switching capability
• Single output configuration
• Supply voltage range compatibility (minimum 5V, maximum 50V)
• Output current capability (400mA requirement)
• Surface mount packaging suitable for automated assembly
• Operating temperature range (-20°C to 85°C minimum)

Regulatory and Compliance Criteria:

• RoHS3 compliance
• REACH compliance status
• Moisture sensitivity level (MSL 3 or better)

The AL5809-20S1-7 from Diodes Incorporated is identified as a substitute part. However, this substitute exhibits significant electrical parameter deviations that must be evaluated against specific application requirements. The AL5809-20S1-7 operates with a lower output current specification (20mA versus 400mA) and different output voltage characteristics (60V versus 12V), indicating application-specific suitability rather than direct functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TS19603CS RLG is obsolete, making the AL5809-20S1-7 from Diodes Incorporated the identified substitute option. The AL5809-20S1-7 maintains active production status, ensuring long-term component availability and supply chain continuity.

Compliance and Certification Alignment: Both components maintain equivalent regulatory compliance profiles:

• RoHS3 compliance certification
• REACH unaffected status
• Identical MSL 3 moisture sensitivity rating (168 hours)

Electrical Parameter Deviations: The AL5809-20S1-7 exhibits the following electrical differences from the TS19603CS RLG:

• Output current: 20mA (versus 400mA original specification)
• Output voltage: 60V (versus 12V original specification)
• Supply voltage range: 2.5V to 60V (versus 5V to 50V original specification)

These deviations indicate that the AL5809-20S1-7 is suitable for applications with lower current requirements and different output voltage specifications. Direct substitution requires circuit-level evaluation to confirm compatibility with existing load characteristics and power delivery requirements.

Package Consideration: The AL5809-20S1-7 utilizes SOD-123 packaging, differing from the 8-SOIC exposed pad package of the TS19603CS RLG. PCB layout modifications are required for component placement and thermal management.

Frequently Asked Questions (FAQ)

Q: Can the AL5809-20S1-7 directly replace the TS19603CS RLG in existing designs?

A: Direct replacement is not recommended without circuit evaluation. The AL5809-20S1-7 has significantly lower output current capability (20mA versus 400mA) and different output voltage specification (60V versus 12V). Applications requiring the original 400mA output current cannot use this substitute without redesign.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) output current requirement, (2) output voltage specification, (3) supply voltage range, (4) linear topology with internal switching, and (5) single-output configuration. The AL5809-20S1-7 meets the topology and output configuration criteria but differs significantly in current and voltage ratings.

Q: Are there compliance or regulatory concerns with using the AL5809-20S1-7 as a substitute?

A: No compliance concerns exist. Both components maintain RoHS3 compliance, REACH unaffected status, and identical MSL 3 ratings. Regulatory and environmental compliance profiles are equivalent.

Q: How does the package difference affect implementation?

A: The TS19603CS RLG uses 8-SOIC with exposed pad; the AL5809-20S1-7 uses SOD-123. These are fundamentally different package form factors requiring PCB redesign for component placement, trace routing, and thermal management. Automated assembly processes may require reconfiguration.

Q: What is the operating temperature range difference, and does it matter?

A: The AL5809-20S1-7 operates across -40°C to 125°C, compared to the TS19603CS RLG range of -20°C to 85°C. The substitute provides a wider operating range, which is advantageous for applications requiring extended temperature performance. This does not create compatibility issues for designs operating within the original -20°C to 85°C specification.

Q: Is the AL5809-20S1-7 suitable for backlight applications?

A: The AL5809-20S1-7 is specified for signage applications. While both are LED driver ICs with linear topology, the lower current rating (20mA) and different output voltage (60V) make this substitute suitable for lower-power LED signage rather than backlight applications requiring 400mA output.

Q: What supply voltage range considerations apply to the AL5809-20S1-7?

A: The AL5809-20S1-7 operates from 2.5V to 60V, providing broader supply voltage compatibility than the original TS19603CS RLG (5V to 50V). This extended range does not create compatibility issues for designs operating within the original 5V to 50V specification.