TLE4241GM LED Driver IC Equivalent & Substitute Parts

Part Overview

The TLE4241GM is a linear LED driver IC manufactured by Infineon Technologies, designed for single-output PWM dimming applications with a maximum output current of 60mA. The device operates across a wide supply voltage range of 4V to 45V and is housed in an 8-SOIC package. The TLE4241GM is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain compatibility with the core electrical specifications while accommodating packaging and availability constraints.

Key Parameters

Parameter	TLE4241GM Value
Manufacturer	Infineon Technologies
Category	Power Management (PMIC)
Type	Linear
Number of Outputs	1
Voltage - Supply (Min)	4V
Voltage - Supply (Max)	45V
Voltage - Output	40V
Current - Output / Channel	60mA
Dimming	PWM
Internal Switch(s)	Yes
Operating Temperature	-40°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the TLE4241GM is determined by the following critical parameters:

Output Current Capability: The main part supports 60mA. Substitutes must support at least 60mA or be selected based on specific application requirements where lower current is acceptable.
Supply Voltage Range: The main part operates from 4V to 45V. Substitutes must cover this range or a compatible subset.
Dimming Method: PWM dimming is the primary control method for the main part.
Internal Switch Configuration: The presence of an internal switch affects circuit topology and application suitability.
Package Type: Surface mount packages are required; package footprint compatibility must be verified for direct board-level substitution.
Product Status: Active substitutes are preferred over obsolete alternatives for long-term availability.

Substitute parts are grouped into two categories: parametric equivalents (same base part number with different packaging) and manufacturer-recommended alternatives (different manufacturers with comparable electrical specifications).

Parameter Comparison

Part Number	Manufacturer	Type	Supply Min (V)	Supply Max (V)	Output Voltage (V)	Output Current (mA)	Dimming	Internal Switch	Package	Status
TLE4241GM	Infineon Technologies	Linear	4	45	40	60	PWM	Yes	8-SOIC	Obsolete
TLE4241GMXUMA1	Infineon Technologies	Linear	4	45	40	60	PWM	Yes	8-SOIC	Active
AL5809-20P1-7	Diodes Incorporated	Linear	2.5	60	60	20	—	Yes	PowerDI™ 123	Active
AL5809-30S1-7	Diodes Incorporated	Linear	2.5	60	60	30	—	Yes	SOD-123	Active
BCR405UW6Q-7	Diodes Incorporated	Linear	1.4	40	40	50	PWM	No	SOT-23-6	Active
BCR421UW6-7	Diodes Incorporated	Linear	—	18	40	350	PWM	Yes	SOT-23-6	Active
IS31LT3172-GRLS4-TR	Lumissil Microsystems	Linear	5	42	42	200	PWM	Yes	8-SOIC-EP	Obsolete
MAX16836ASA+T	Analog Devices Inc./Maxim Integrated	Linear	6.5	40	39.45	350	PWM	Yes	8-SOIC-EP	Active
NCR402UX	Nexperia USA Inc.	Linear	—	40	38	20	—	Yes	6-TSOP	Active
NSI45025AT1G	onsemi	Current Regulator	—	45	—	25	—	—	SOD-123	Active

Engineering Selection Recommendations

Direct Parametric Equivalent: TLE4241GMXUMA1 is the active equivalent of TLE4241GM, offering identical electrical specifications with the same 8-SOIC package. This part is recommended as the primary replacement for obsolete TLE4241GM applications, as it maintains full compatibility with existing designs.

High-Current Alternatives (350mA Output): BCR421UW6-7 and MAX16836ASA+T both support 350mA output current with PWM dimming capability. BCR421UW6-7 is qualified to AEC-Q101 automotive standards and operates up to 18V supply. MAX16836ASA+T extends to 40V supply with automotive-grade qualification and is available in active status. Both are suitable for applications requiring higher current capacity than the original 60mA specification.

Medium-Current Alternatives (50mA Output): BCR405UW6Q-7 provides 50mA output current with PWM dimming in a compact SOT-23-6 package. This part is AEC-Q101 qualified and operates across 1.4V to 40V supply range, making it suitable for lower-power LED driver applications.

Lower-Current Alternatives (20-30mA Output): AL5809-20P1-7 and AL5809-30S1-7 from Diodes Incorporated offer 20mA and 30mA output respectively, with extended supply voltage range up to 60V. These parts are suitable for signage and indicator applications where lower current is sufficient. NCR402UX from Nexperia provides 20mA output with AEC-Q101 qualification in a 6-TSOP package.

Current Regulator Alternative: NSI45025AT1G from onsemi is a current regulator with 25mA output and ±10% accuracy, suitable for applications where precise current regulation is required rather than PWM dimming control.

Compliance and Availability: All recommended substitutes are RoHS3 compliant and REACH unaffected. Active status parts are preferred for new designs. Automotive-grade alternatives (BCR405UW6Q-7, BCR421UW6-7, MAX16836ASA+T, NCR402UX) carry AEC-Q101 qualification where applicable.

Frequently Asked Questions (FAQ)

Q: Can TLE4241GMXUMA1 be used as a direct replacement for TLE4241GM? A: Yes. TLE4241GMXUMA1 is the parametric equivalent with identical electrical specifications (4V–45V supply, 60mA output, PWM dimming, 8-SOIC package). The only difference is packaging format (Tape & Reel vs. standard tube), which does not affect electrical performance or board-level compatibility.

Q: What is the key difference between BCR421UW6-7 and the original TLE4241GM? A: BCR421UW6-7 supports significantly higher output current (350mA vs. 60mA) but operates at a lower maximum supply voltage (18V vs. 45V). It is suitable for applications requiring higher LED current but with lower supply voltage requirements. The package is also different (SOT-23-6 vs. 8-SOIC).

Q: Are the AL5809 series parts suitable replacements? A: AL5809-20P1-7 and AL5809-30S1-7 are suitable only for applications where 20mA or 30mA output current is acceptable. They offer extended supply voltage range (2.5V–60V) and are designed for signage applications. They do not support PWM dimming, which may limit their use in dimming-dependent designs.

Q: What is the difference between PWM dimming and non-dimming LED drivers? A: PWM dimming drivers modulate the output current at high frequency to control LED brightness. Non-dimming drivers provide constant current output. The TLE4241GM supports PWM dimming; substitutes without PWM capability (AL5809 series, NCR402UX) require external dimming control circuits.

Q: Can MAX16836ASA+T replace TLE4241GM in all applications? A: MAX16836ASA+T has higher output current capability (350mA vs. 60mA) and supports PWM dimming. However, it requires a minimum supply voltage of 6.5V (vs. 4V for TLE4241GM), which may not be compatible with lower-voltage applications. Package compatibility (8-SOIC-EP vs. 8-SOIC) must be verified for board-level substitution.

Q: What does AEC-Q101 qualification mean? A: AEC-Q101 is an automotive industry standard qualification for discrete semiconductors. Parts carrying this qualification (BCR405UW6Q-7, BCR421UW6-7, MAX16836ASA+T, NCR402UX) meet stringent reliability and performance requirements for automotive applications.

Q: Is NSI45025AT1G compatible with TLE4241GM applications? A: NSI45025AT1G is a current regulator, not a PWM dimming driver. It provides constant 25mA output with ±10% accuracy. It is suitable only for applications requiring fixed current regulation without dimming capability.

Q: What packaging considerations apply when selecting a substitute? A: The original TLE4241GM uses 8-SOIC (0.154", 3.90mm width) package. Direct board-level substitution requires identical or compatible package footprints. TLE4241GMXUMA1 uses the same package. Other substitutes (BCR421UW6-7, BCR405UW6Q-7 in SOT-23-6; AL5809 series in PowerDI™ 123 or SOD-123; NCR402UX in 6-TSOP) require PCB redesign or adapter solutions.

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