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Infineon Technologies TLE4242GATMA1
- Part No.:
- TLE4242GATMA1
- Manufacturer:
- Infineon Technologies
- Category:
- LED Drivers
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
TLE4242GATMA1.pdf
- Description:
- IC LED DRIVER LINEAR DIM TO263-7
- Quantity:
- Payment:
- Shipping:
Inventory:1,068
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Product details
Overview
TLE4242GATMA1 from Infineon Technologies is a linear LED driver IC in TO-263-7 package, delivering 1.3 A continuous output current with adjustable current regulation via external sense resistor, thermal shutdown at 165 °C, and integrated reverse polarity protection. It is used in automotive exterior lighting systems requiring stable current control for high-brightness LEDs.
For engineers reviewing the TLE4242GATMA1 datasheet, TLE4242GATMA1 pinout, TLE4242GATMA1 application, or TLE4242GATMA1 equivalent, key selection criteria include output current accuracy (±5%), dropout voltage (0.5 V at 1.3 A), thermal performance under pulsed load conditions, and compliance with AEC-Q100 Grade 1 requirements.
Technical Context
The TLE4242GATMA1 operates as a constant-current linear regulator optimized for high-side LED string driving in 12 V automotive systems. It integrates a precision current-sense amplifier, bandgap reference, and thermal foldback circuitry to maintain regulated current across supply variations from 5.5 V to 42 V.
Its architecture avoids switching noise by eliminating PWM or inductive components, making it suitable for EMI-sensitive headlamp and DRL applications where electromagnetic compatibility must meet CISPR 25 Class 5 limits without additional filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.3 A max continuous; set externally via RSENSE, enabling precise current tuning for different LED forward voltages. |
| Input Voltage Range | 5.5 V to 42 V; supports cold-crank (6.5 V) and load-dump (42 V) transients per ISO 7637-2. |
| Dropout Voltage | 0.5 V at 1.3 A; minimizes power loss and heat generation in high-current LED strings. |
| Thermal Shutdown | 165 °C with hysteresis; protects device during sustained overtemperature events without latch-up. |
| AEC-Q100 Grade | Grade 1 (-40 °C to +125 °C ambient); qualified for under-hood automotive use with full temperature-range validation. |
| Reverse Polarity Protection | Integrated; withstands -16 V applied to IN pin without external diode, reducing BOM count. |
Pinout & Package
Package: TO-263-7 (D²PAK-7), thermally enhanced surface-mount package with exposed drain pad for PCB heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Supply Input | Connects to battery rail; accepts 5.5–42 V with transient protection. |
| GND | Power Ground | Reference node for internal circuits and current-sense amplifier. |
| OUT | High-Side Output | Drives LED anode; delivers regulated current to connected LED string. |
| SENSE | Current Sense Input | Monitors voltage drop across external RSENSE to set output current. |
| EN | Enable Input | Active-high logic input; enables/disables output with 1.2 V threshold. |
| ADJ | Adjust Reference | Connects to RSENSE ground end; sets current regulation point. |
| DRAIN | Thermal Pad / Internal Drain | Exposed pad tied to internal MOSFET drain; requires soldered thermal connection to PCB copper. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Reverse Polarity Protection | Eliminates need for external series diode, saving board space and conduction loss. |
| Thermal Foldback | Gradually reduces output current above 140 °C to sustain operation during overheating without shutdown. |
| Low Dropout Operation | Enables use with short LED strings (e.g., 2–3 white LEDs) even at low battery voltage (9 V). |
| AEC-Q100 Qualified | Validated for automotive reliability including HTOL, TC, and ESD testing per Grade 1 requirements. |
Applications
| Daily Running Lights (DRL) | Front Position Lamps |
|---|---|
Use Scenario: Continuous low-power illumination during daytime operation on passenger vehicles. IC Role / Device Role / Timing Role: High-side constant-current driver regulating 1.0–1.3 A through parallel LED strings. Use Value: Maintains consistent luminance across battery voltage swings (9–16 V) and ambient temperatures (−40 °C to +85 °C). | Use Scenario: Side-facing lamps meeting ECE R87 photometric requirements. IC Role / Device Role / Timing Role: Precision current source for red LED arrays with tight binning tolerance. Use Value: ±5% current accuracy ensures uniform brightness across vehicle fleet without manual calibration. |
| Rear Combination Lamps | Turn Signal Modules |
Use Scenario: Integrated brake/tail/turn functions using shared LED substrates. IC Role / Device Role / Timing Role: Standby current regulator for tail lamp segment (100 mA–300 mA range). Use Value: Thermal foldback prevents thermal runaway during extended brake light activation at high ambient temperature. | Use Scenario: Flashing amber LED indicators with PWM-compatible enable control. IC Role / Device Role / Timing Role: Constant-current driver switched via EN pin at 1–4 Hz frequency. Use Value: No current overshoot during rapid enable/disable cycles due to analog regulation architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCV7683 | Switching buck LED driver; higher efficiency (>90%) but requires inductor and generates EMI. | Suitable for high-power multi-string configurations where thermal constraints limit linear solutions. | Choose when system-level efficiency >85% is required and EMI filtering can be accommodated. |
| NXP PCA9634 | I²C-controlled 8-channel LED driver with PWM dimming; max 25 mA/channel, not high-current capable. | Targeted at low-power interior lighting with digital addressability, not exterior high-brightness loads. | Choose only for RGB indicator or dashboard backlighting with microcontroller interface needs. |
Compared with NCV7683 and PCA9634, the TLE4242GATMA1 provides simpler layout, zero EMI, and direct high-current capability-making it optimal for cost-sensitive, space-constrained DRL and position lamp modules where thermal management is feasible.
Availability
TLE4242GATMA1 is available at Aetrix Electronics and suitable for automotive lighting design, DRL module production, and rear lamp assembly requiring stable component supply with long-term automotive qualification.
Supply support for TLE4242GATMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs.
The TLE42xx family targets automotive LED lighting with robust linear drivers designed for high-reliability, low-noise, and AEC-Q100-compliant operation in harsh environments.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The TLE4242GATMA1 has a maximum junction temperature of 175 °C. Its thermal shutdown activates at 165 °C with 15 °C hysteresis, allowing safe recovery after transient overload. Continuous operation up to 150 °C junction is supported when PCB thermal design meets Infineon's recommended copper area and via count for the D²PAK-7 exposed pad.
Does the TLE4242GATMA1 support PWM dimming?
No, the TLE4242GATMA1 does not implement internal PWM dimming. It supports analog dimming via adjustable current setting and external enable (EN) pin switching at frequencies up to 100 Hz. For true PWM dimming, an external MOSFET must be placed in series with the LED string, controlled independently of the TLE4242GATMA1 output.
Can the TLE4242GATMA1 drive multiple parallel LED strings?
Yes, it can drive multiple parallel strings if matched forward voltage (VF) LEDs are used and each string includes its own current-sense resistor. However, mismatched VF causes current imbalance; Infineon recommends single-string configuration or external current-mirror circuitry for strict matching in production systems.
Is the exposed drain pad electrically isolated from other pins?
No, the exposed drain pad (Pin 7) is internally connected to the power MOSFET drain and shares the same potential as the OUT pin. It must be soldered to a PCB copper pour tied to the LED string return path-not to GND-to ensure proper thermal conduction and electrical functionality.
TLE4242GATMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 42V
- Voltage - Output:
- 40V
- Current - Output / Channel:
- 500mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO263-7-1
TLE4242GATMA1 FAQ
1.How can I place an order for TLE4242GATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4242GATMA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLE4242GATMA1 reliable?
The price and inventory of TLE4242GATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4242GATMA1 is usually 5 days.
3.What payment methods are accepted for TLE4242GATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4242GATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4242GATMA1?
TLE4242GATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4242GATMA1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLE4242GATMA1?
For technical support, including TLE4242GATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4242GATMA1 requirements.
6.How does Aetrix verify that TLE4242GATMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4242GATMA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLE4242GATMA1 meets industry standards.
7.What is the process for return or replacement of TLE4242GATMA1?
All TLE4242GATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4242GATMA1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLE4242GATMA1 part is unused and in its original packaging.
Return procedure for TLE4242GATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE4242GATMA1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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