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Infineon Technologies TLD1312ELXUMA1
- Part No.:
- TLD1312ELXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- LED Drivers
- Package:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLD1312ELXUMA1.pdf
- Description:
- IC LED DRVR LIN PWM 120MA 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,435
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Product details
Overview
TLD1312ELXUMA1 from Infineon Technologies is a 3-channel high-side LED current source IC designed for automotive exterior and interior lighting. It delivers up to 120 mA per channel with ±7% output current accuracy at RSET = 12 kΩ, operates from 5.5 V to 40 V supply, and integrates thermal, overload, reverse polarity, and undervoltage protection. Used in tail/brake lights and dashboard illumination where precise, independent LED current control is required.
For engineers reviewing the TLD1312ELXUMA1 datasheet, TLD1312ELXUMA1 pinout, TLD1312ELXUMA1 application, or TLD1312ELXUMA1 equivalent, key selection criteria include its PG-SSOP-14 exposed-pad package, VS- and EN-controlled sleep mode (0.1 µA), integrated PWM dimming engine for dual brightness levels, and adjustable current via external resistor without MCU intervention.
Technical Context
The TLD1312ELXUMA1 implements three independent high-side current sources with internal power stages, each regulated by an external RSET resistor. Its current regulation remains stable across supply voltage (5.5–40 V) and load variations, enabling consistent LED brightness in automotive battery environments.
It features dual-function EN pin for enable/sleep control and PWMI pin supporting direct PWM dimming or internal two-level brightness generation. Protection logic includes thermal shutdown at Tj ≥ 150°C, UVLO at VS < 5 V, and ESD robustness per HBM (±2 kV) and CDM (±750 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 3 independent high-side current sources, each driving LEDs directly from battery rail |
| Max Output Current | 120 mA per channel - supports high-brightness LEDs with thermal derating |
| Current Accuracy | ±7% at RSET = 12 kΩ - enables predictable luminance without calibration |
| Sleep Current | 0.1 µA - meets automotive off-state leakage requirements |
| Supply Range | 5.5 V to 40 V - covers cold-crank (5.5 V) to load-dump (40 V) transients |
| Junction Temp | -40°C to +150°C - qualified for under-hood and headlamp module placement |
| ESD Rating | ±750 V CDM on corner pins - enhances manufacturing and field reliability |
Pinout & Package
Package: PG-SSOP-14 with exposed thermal pad (EP), optimized for automotive PCBs with copper pour under EP for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 VS | Power input | Battery supply rail connection; requires local 100 nF–1 µF decoupling to GND |
| 3 EN | Digital control input | Enable/sleep control: <5 V disables outputs and reduces current to 0.1 µA |
| 5 PWMI | I/O signal | Accepts external PWM or configures internal two-level dimming without µC |
| 6 IN_SET | Analog current setting | Connects external RSET (e.g., 12 kΩ) to set nominal output current |
| 9 GND | Reference ground | All GND pins-including exposed pad-must be tied together for low-impedance return path |
| 11–13 OUT1–OUT3 | High-side outputs | Each drives LED anode; cathodes connect to chassis/GND; no external FET needed |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PWM dimming engine | Generates two brightness levels internally-eliminates need for external µC or logic circuitry |
| Thermal foldback protection | Reduces output current above Tj threshold to prevent damage during sustained overtemperature |
| Reverse polarity protection | Withstands -16 V on VS pin-protects against battery misconnection in service environments |
| PTC-compatible current adjustment | IN_SET accepts PTC thermistor to automatically reduce LED current during overheating |
| Low-EMI design | Internal slew-rate control and optional external Cmod (2.2 µF) suppress switching noise in sensitive RF zones |
Applications
| Rear Combination Lamp | Dashboard Backlighting |
|---|---|
Use Scenario: Tail light assembly integrating brake, turn, and position functions in single housing. IC Role / Device Role / Timing Role: High-side current source controlling three independent LED strings with synchronized dimming and fault reporting. Use Value: Enables compact layout with shared thermal pad and eliminates discrete current-setting resistors per channel. | Use Scenario: Instrument cluster backlight requiring uniform brightness across segmented LCD areas. IC Role / Device Role / Timing Role: Constant-current driver for RGB or white LED arrays with analog current tuning via IN_SET. Use Value: Maintains color consistency across temperature (-40°C to +85°C ambient) due to supply- and load-independent regulation. |
| Side Marker Lighting | Interior Ambient Lighting |
Use Scenario: Low-power side marker module mounted on door panels or fenders. IC Role / Device Role / Timing Role: High-side switch with integrated overvoltage protection for 12 V vehicle architecture. Use Value: Survives ISO 7637-2 pulse 5a (load dump up to 40 V) without external TVS diode. | Use Scenario: Footwell or door handle illumination with soft-on/off fade effect. IC Role / Device Role / Timing Role: PWM-dimmable current source accepting vehicle CAN-based dimming commands via microcontroller interface. Use Value: Reduces BOM count by combining current regulation, protection, and dimming logic in one PG-SSOP-14 device. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ASL3416SHN | 4-channel, higher max current (150 mA), SPI interface, no integrated PWM engine | Requires external µC for dimming control; better suited for adaptive lighting systems | Select when scalable channel count and digital diagnostics are prioritized over simplicity |
| TPS92692QPWPRQ1 | 2-channel, external MOSFET required, supports analog + PWM dimming, wider I²C address range | Needs external high-side FETs and current sense; more flexible but larger footprint | Select when design requires programmable fault thresholds or multi-device synchronization |
Compared with ASL3416SHN and TPS92692QPWPRQ1, the TLD1312ELXUMA1 offers lowest system complexity for fixed-function 3-channel automotive lighting-no external FETs, no communication bus, and built-in dual-level dimming-making it optimal for cost-sensitive, space-constrained modules.
Availability
TLD1312ELXUMA1 is available at Aetrix Electronics and suitable for rear combination lamps, dashboard backlighting, side marker lighting, and interior ambient lighting requiring stable component supply across automotive production cycles.
Supply support for TLD1312ELXUMA1 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, and industrial control ICs with global automotive qualification standards.
The LITIX™Basic product line delivers robust, AEC-Q100 qualified LED drivers for cost-sensitive automotive lighting, emphasizing integration, protection, and ease of use in harsh environments.
FAQ
What is the minimum supply voltage required for normal operation?
The TLD1312ELXUMA1 requires a minimum supply voltage of 5.5 V for functional operation, with power-on reset triggered at VS ≥ 5 V. Below this threshold, the device remains in reset state and outputs stay disabled. This ensures reliable startup after cold-crank conditions common in 12 V automotive systems.
Can the IN_SET pin accept a PTC thermistor for temperature-dependent current reduction?
Yes-the IN_SET pin supports direct connection of a PTC thermistor in series with RSET. As temperature rises, PTC resistance increases, reducing the current-setting reference voltage and thereby lowering output current to protect LEDs during overtemperature events without external monitoring circuitry.
Is the exposed thermal pad electrically isolated or connected internally?
The exposed pad (EP) is internally connected to GND and must be soldered to a PCB copper pour tied to system ground. This provides both thermal conduction (RthJC ≈ 8 K/W) and electrical grounding for noise immunity and ESD discharge path-failure to connect it compromises thermal performance and ESD robustness.
Does the PWMI pin support both external PWM input and internal two-level dimming simultaneously?
No-the PWMI pin operates in one of two mutually exclusive modes: either as an external PWM input (driving OUTx at applied frequency/duty cycle), or as a control input to activate the internal two-level dimming engine (requiring EN and VS sequencing). Mode selection is determined by configuration during power-up and cannot be dynamically switched.
TLD1312ELXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- LITIX™
- Package/Case:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 3
- Voltage - Supply (Min):
- 5.5V
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- 40V
- Current - Output / Channel:
- 120mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SSOP-14-5
TLD1312ELXUMA1 FAQ
1.How can I place an order for TLD1312ELXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD1312ELXUMA1 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 TLD1312ELXUMA1 reliable?
The price and inventory of TLD1312ELXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD1312ELXUMA1 is usually 5 days.
3.What payment methods are accepted for TLD1312ELXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD1312ELXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD1312ELXUMA1?
TLD1312ELXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD1312ELXUMA1 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 TLD1312ELXUMA1?
For technical support, including TLD1312ELXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD1312ELXUMA1 requirements.
6.How does Aetrix verify that TLD1312ELXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLD1312ELXUMA1 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 TLD1312ELXUMA1 meets industry standards.
7.What is the process for return or replacement of TLD1312ELXUMA1?
All TLD1312ELXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLD1312ELXUMA1, 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 TLD1312ELXUMA1 part is unused and in its original packaging.
Return procedure for TLD1312ELXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLD1312ELXUMA1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
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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