TLE42403MHTSA1 Equivalent & Substitute Parts

Part Overview

The TLE42403MHTSA1 is a linear LED driver IC manufactured by Infineon Technologies, designed for single-output LED applications with 58mA output current capability and a wide supply voltage range of 3V to 45V. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The linear topology with internal switching capability provides straightforward integration for LED dimming applications across automotive and industrial lighting systems.

Substiute Parts

TLE42403MHTSA1

Infineon TechnologiesIn Stock: 681TLE42403MHTSA1 Datasheet

Current PartRFQ

A1569KLJTR-T

Allegro MicroSystemsIn Stock: 5678A1569KLJTR-T Datasheet

MFR RecommendedRFQ

A6260KLJTR-T

Allegro MicroSystemsIn Stock: 45572A6260KLJTR-T Datasheet

MFR RecommendedRFQ

CL525K4-G

Microchip TechnologyIn Stock: 931CL525K4-G Datasheet

MFR RecommendedRFQ

TSCR402CX6 RFG

Taiwan Semiconductor CorporationIn Stock: 1380TSCR402CX6 RFG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE42403MHTSA1 is determined by the following critical parameters:

Primary Substitution Criteria:

• Single output linear LED driver topology
• Supply voltage range compatibility (minimum 3V, maximum 45V)
• Output current capability (58mA nominal)
• Internal switching capability
• Surface mount packaging
• Operating temperature range (-40°C to 150°C preferred)

Secondary Compatibility Factors:

• Dimming capability (linear or PWM)
• Package form factor (6-SMD preferred, but 8-SOIC and SOT-26 acceptable with layout modification)
• Moisture sensitivity level
• Compliance certifications (RoHS, REACH)

The substitute parts listed below meet the core functional requirements of single-output linear LED driving with comparable electrical performance, though individual parameter variations require engineering evaluation for specific application contexts.

Parameter Comparison

Engineering Selection Recommendations

A1569KLJTR-T (Allegro MicroSystems): Active product status with AEC-Q100 automotive qualification. Output current of 150mA exceeds the TLE42403MHTSA1 requirement. Supply voltage range of 7V to 24V is narrower than the original part. Suitable for applications where minimum supply voltage of 7V is acceptable and higher output current provides design margin. ROHS3 compliant with MSL-3 rating.

A6260KLJTR-T (Allegro MicroSystems): Active product with AEC-Q100 automotive qualification and PWM dimming capability. Output current of 350mA significantly exceeds original specification. Supply voltage range of 6V to 40V provides broader upper limit compatibility. Recommended for designs requiring PWM dimming control and higher current capacity. ROHS3 compliant with MSL-3 rating.

CL525K4-G (Microchip Technology): Active product with widest supply voltage range (4.75V to 90V) and flexible output voltage capability (1V to 90V). Output current of 25mA is lower than the original part, limiting applicability to lower-power LED applications. Package form factor (TO-252 DPAK) differs from original 6-SMD configuration, requiring PCB layout modification. ROHS3 compliant with MSL-3 rating.

TSCR402CX6 RFG (Taiwan Semiconductor Corporation): Obsolete product status matching the original part. Output current of 65mA closely matches the TLE42403MHTSA1 at 58mA. Operating temperature range extends to -55°C minimum and 150°C maximum, matching the original upper limit. Supply voltage maximum of 40V is compatible. MSL-1 rating matches original part. Package form factor (SOT-26) differs from original, requiring layout modification. ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can the A1569KLJTR-T replace the TLE42403MHTSA1 in all applications?

A: The A1569KLJTR-T is functionally compatible for applications where the minimum supply voltage requirement of 7V is met. The original part operates from 3V minimum, so designs requiring operation below 7V cannot use this substitute. The higher output current (150mA vs. 58mA) provides design margin but does not prevent substitution in lower-current applications.

Q: What are the package compatibility implications?

A: The TLE42403MHTSA1 uses a 6-SMD (5 Leads) Gull Wing package. The A1569KLJTR-T and A6260KLJTR-T use 8-SOIC packages; the CL525K4-G uses TO-252 DPAK; and the TSCR402CX6 RFG uses SOT-26. Each package change requires PCB layout modification and verification of pin-to-function mapping before implementation.

Q: Is the A6260KLJTR-T suitable for applications requiring linear dimming?

A: The A6260KLJTR-T provides PWM dimming capability rather than linear dimming. While both methods control LED brightness, PWM dimming operates through pulse-width modulation at a switching frequency, whereas linear dimming adjusts current continuously. Application requirements determine which dimming method is appropriate.

Q: Why is the CL525K4-G listed as a substitute despite lower output current?

A: The CL525K4-G meets the core functional criteria of single-output linear LED driving with internal switching capability. The 25mA output current is lower than the original 58mA specification, making it suitable only for applications with lower LED current requirements. It is not a direct replacement for all TLE42403MHTSA1 applications.

Q: What is the significance of MSL rating differences?

A: The TLE42403MHTSA1 and TSCR402CX6 RFG have MSL-1 (Unlimited) ratings, indicating no moisture sensitivity constraints during storage and handling. The A1569KLJTR-T, A6260KLJTR-T, and CL525K4-G have MSL-3 (168 Hours) ratings, requiring controlled storage conditions and limiting shelf life to 168 hours after moisture exposure. Manufacturing processes must account for these differences in component handling and storage protocols.

Q: Are all substitute parts RoHS compliant?

A: The A1569KLJTR-T, A6260KLJTR-T, CL525K4-G, and TSCR402CX6 RFG are all ROHS3 compliant. The RoHS status of the original TLE42403MHTSA1 is not specified in the provided data.

Q: Which substitute offers the closest electrical match to the TLE42403MHTSA1?

A: The TSCR402CX6 RFG provides the closest electrical match with 65mA output current (compared to 58mA), matching operating temperature range (-40°C to 150°C), and identical MSL-1 rating. However, it is also obsolete, and package form factor differs from the original.