TLE4309GATMA1 Equivalent & Substitute Parts

Part Overview

The TLE4309GATMA1 is a linear LED driver IC manufactured by Infineon Technologies, designed for single-output LED applications with analog and PWM dimming capability. This device delivers 500mA output current across a 4.5V to 24V supply range and operates within the -40°C to 150°C junction temperature range. The part is classified as obsolete, making equivalent and substitute components necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer	Infineon Technologies
Part Number	TLE4309GATMA1
Category	Power Management (PMIC)
Type	Linear LED Driver
Number of Outputs	1
Supply Voltage Range	4.5V to 24V
Output Current	500mA
Dimming Capability	Analog, PWM
Operating Temperature	-40°C to 150°C (TJ)
Package Type	TO-263-8, D2PAK (7 Leads + Tab)
Internal Switch	Yes
Product Status	Obsolete
RoHS Compliance	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TLE4309GATMA1 is determined by the following critical parameters:

Primary Substitution Criteria:

Single output LED driver topology
Linear driver architecture with internal switch
Output current capability (500mA nominal)
Supply voltage compatibility (minimum 4.5V operation preferred)
Dimming support (PWM and/or analog)
Operating temperature range (-40°C minimum)
Surface mount packaging

Grouping Logic: Substitute parts are grouped by output current rating and supply voltage range compatibility. Parts with 350mA to 500mA output current and supply ranges overlapping or exceeding the TLE4309GATMA1 specification are considered primary substitutes. Parts with lower current ratings (100mA, 75mA, 50mA, 40mA) are secondary substitutes suitable only for reduced-current LED applications. All substitute parts maintain linear driver topology with internal switching capability and RoHS3 compliance.

Parameter Comparison

Parameter	TLE4309GATMA1	A6260SLJTR-T	AL5811FF-7	BCR401UW6-7	MAX16803ATE+T	MAX16815ASA+T
Manufacturer	Infineon	Allegro MicroSystems	Diodes Inc.	Diodes Inc.	Analog Devices/Maxim	Analog Devices/Maxim
Output Current	500mA	350mA	75mA	100mA	350mA	100mA
Supply Voltage (Min)	4.5V	6V	3.5V	1.4V	6.5V	6.5V
Supply Voltage (Max)	24V	40V	60V	40V	40V	40V
Dimming	Analog, PWM	PWM	PWM	PWM	PWM	PWM
Operating Temperature (Min)	-40°C	-20°C	-40°C	-55°C	-40°C	-40°C
Operating Temperature (Max)	150°C	85°C	125°C	150°C	125°C	125°C
Internal Switch	Yes	Yes	Yes	Yes	Yes	Yes
Package Type	TO-263-8 (D2PAK)	8-SOIC-EP	6-UDFN	SOT-23-6	16-TQFN (5x5)	8-SOIC-EP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

A6260SLJTR-T and MAX16803ATE+T are the closest functional equivalents, both delivering 350mA output current with PWM dimming and active product status. Both parts maintain RoHS3 compliance and operate within overlapping supply voltage ranges (6V to 40V). A6260SLJTR-T carries automotive qualification (AEC-Q100), while MAX16803ATE+T also includes automotive-grade designation. These parts are suitable for applications where 350mA output current meets design requirements.

BCR401UW6-7 provides 100mA output current with PWM dimming, automotive qualification (AEC-Q101), and the widest operating temperature range (-55°C to 150°C TJ), matching the TLE4309GATMA1 upper temperature limit. This part is appropriate for reduced-current LED applications requiring extended temperature performance.

MAX16815ASA+T delivers 100mA output current with PWM dimming and active status. Supply voltage range (6.5V to 40V) and operating temperature (-40°C to 125°C TA) provide adequate coverage for standard lighting and signage applications.

Secondary Substitutes (Current-Limited Applications):

AL5811FF-7, AL5809-100QP1-7, AL5809-50P1-7, and AL5809-40S1-7 are Diodes Incorporated parts with output currents ranging from 40mA to 100mA. These components are suitable only for low-current LED signage and indicator applications. AL5811FF-7 supports PWM dimming with 75mA output and extended supply voltage range (3.5V to 60V).

CL6K4-G (Microchip Technology) provides 100mA output current with PWM dimming and the highest supply voltage maximum (90V), suitable for high-voltage LED driver applications.

BCR420UFD-7 delivers 350mA output current but lacks internal switching capability, requiring external switch implementation.

Selection Criteria:

For direct 500mA replacement: No single-source equivalent exists; A6260SLJTR-T or MAX16803ATE+T at 350mA represent the highest current alternatives
For automotive applications: A6260SLJTR-T (AEC-Q100) or BCR401UW6-7 (AEC-Q101)
For extended temperature range: BCR401UW6-7 (-55°C to 150°C)
For high-voltage applications: CL6K4-G (up to 90V) or AL5811FF-7 (up to 60V)
All recommended substitutes maintain RoHS3 compliance and active product status

Frequently Asked Questions (FAQ)

Q: Can A6260SLJTR-T directly replace TLE4309GATMA1 in existing designs?

A: A6260SLJTR-T is functionally compatible for PWM dimming applications but delivers 350mA versus the original 500mA output current. Circuit redesign may be required if full 500mA output is critical. Package change from TO-263-8 (D2PAK) to 8-SOIC-EP requires PCB layout modification.

Q: What is the minimum supply voltage requirement for substitute selection?

A: The TLE4309GATMA1 operates from 4.5V minimum. Most substitutes require 6V or higher minimum supply voltage. AL5811FF-7 and AL5809 series parts operate from 3.5V and 2.5V respectively, providing lower-voltage alternatives.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant designation, matching the original TLE4309GATMA1 compliance status.

Q: Which substitute supports both analog and PWM dimming like the original?

A: The TLE4309GATMA1 uniquely supports both analog and PWM dimming. All listed substitutes support PWM dimming only. Analog dimming capability is not available in the substitute parts listed.

Q: What is the impact of package change on PCB redesign?

A: The TLE4309GATMA1 uses TO-263-8 (D2PAK) with 7 leads plus tab. Substitutes use various packages: 8-SOIC-EP, 6-UDFN, SOT-23-6, and 16-TQFN. Each package change requires new PCB footprint design, thermal management evaluation, and layout verification.

Q: Can BCR420UFD-7 be used as a substitute despite lacking internal switch?

A: BCR420UFD-7 requires external switching implementation, adding circuit complexity. It is not recommended as a direct substitute for applications requiring integrated switch functionality.

Q: Which substitute offers the best automotive qualification?

A: A6260SLJTR-T carries AEC-Q100 qualification. BCR401UW6-7 carries AEC-Q101 qualification. Both are suitable for automotive LED driver applications.

Q: What is the operating temperature limitation when selecting substitutes?

A: The TLE4309GATMA1 operates to 150°C junction temperature. BCR401UW6-7 matches this specification (-55°C to 150°C TJ). Most other substitutes are limited to 125°C maximum, requiring thermal design review for high-temperature applications.

Q: Is there a direct 500mA equivalent available?

A: No active substitute part delivers exactly 500mA output current. A6260SLJTR-T and MAX16803ATE+T at 350mA represent the highest current alternatives. Application redesign for reduced LED current or parallel driver configuration may be necessary.

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