My Inquiry
My Account
Infineon Technologies TLD1315ELXUMA1
- Part No.:
- TLD1315ELXUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- LED Drivers
- Package:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLD1315ELXUMA1.pdf
- Description:
- IC LED DRVR LIN PWM 120MA 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,472
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLD1315ELXUMA1 from Infineon Technologies is a 3-channel high-side LED current source driver IC designed for automotive exterior and interior lighting. It delivers up to 120 mA per channel with ±7% 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 current regulation and fault diagnostics are required.
For engineers reviewing the TLD1315ELXUMA1 datasheet, TLD1315ELXUMA1 pinout, TLD1315ELXUMA1 application, or TLD1315ELXUMA1 equivalent, key selection criteria include its N-1 latched diagnosis capability, PWM dimming via VS/EN pins, integrated current adjustment via IN_SET resistor, and PG-SSOP-14 exposed-pad thermal performance in automotive ambient temperature ranges.
Technical Context
The TLD1315ELXUMA1 implements three independent high-side current sources with internal power stages, each regulated by an external RSET resistor. Its output current remains stable across supply voltage variations (5.5–40 V) and load changes due to closed-loop current sensing.
It features dual-mode PWM control-direct modulation via PWMI pin or VS-based PWM-and includes a dedicated N-1 diagnostic output that latches open-load or short-to-VS faults on any channel. Thermal shutdown activates at Tj ≥ 150°C, with junction-to-case resistance of 8 K/W under natural convection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 5.5 V to 40 V - supports full automotive battery range including cold-crank and load-dump transients |
| Max Output Current | 120 mA per channel - enables driving multiple LEDs per string without external boost circuitry |
| Current Accuracy | ±7% at RSET = 12 kΩ - ensures consistent brightness across channels and units without calibration |
| Sleep Mode Current | 0.1 µA - minimizes standby power draw in always-on vehicle systems |
| Junction Temp Range | −40°C to +150°C - qualified for under-hood and headlamp module placement |
| N-1 Diagnosis | Latched open-load/short-to-VS detection - provides persistent fault flag for ECU-level error logging |
| Thermal Resistance | RthJC = 8 K/W - enables reliable heat transfer to PCB copper when exposed pad is soldered to GND plane |
Pinout & Package
Package: PG-SSOP-14 with exposed thermal pad (EP), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VS (Pins 1,2) | Supply Input | Dual-pin battery rail connection; requires local 100 nF–1 µF decoupling to GND |
| EN (Pin 3) | Enable Control | Active-high enable with sleep mode entry below VEN(off); contributes to total IS consumption |
| PWMI (Pin 5) | PWM Interface | Bidirectional pin supporting both PWM input and status feedback during VS-based dimming |
| IN_SET (Pin 6) | Current Reference | Analog input for external RSET resistor; sets nominal output current with PTC option for overtemp LED protection |
| N-1 (Pin 7) | Fault Diagnostic | Open-drain latched output indicating open-load or short-to-VS on any channel |
| GND (Pin 9) | Reference Ground | Main ground reference; all GND pins and EP must be connected to common low-impedance plane |
| ST (Pin 10) | Status Monitor | Push-pull status signal reflecting device readiness and functional state |
| OUT1–OUT3 (Pins 11–13) | High-Side Outputs | Three independent current-sink outputs; each drives LED anodes directly from VS rail |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3-Channel High-Side Drivers | Eliminates need for external MOSFETs and gate drivers in multi-LED clusters |
| VS-Based PWM Dimming | Enables brightness control without MCU involvement by modulating supply rail |
| Latched N-1 Diagnosis | Preserves fault condition until reset, enabling robust ECU-level diagnostics |
| PTC-Compatible Current Setting | Allows dynamic current reduction during LED overheating to prevent thermal runaway |
| Reverse Polarity Protection | Withstands −16 V supply reversal without damage-critical for service environments |
Applications
| Rear Combination Lamp | Dashboard Backlighting |
|---|---|
Use Scenario: Tail light assembly integrating brake, turn, and position functions in compact 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 single-chip replacement of discrete FET+driver solutions while providing N-1 latched diagnostics for ASAM-compliant error logging. | Use Scenario: Instrument cluster backlight with variable intensity based on ambient light and driving mode. IC Role / Device Role / Timing Role: Constant-current driver for white LED arrays, dimmed via VS-PWM to reduce MCU GPIO usage. Use Value: Delivers stable luminance across 8–18 V battery range with <0.1 µA sleep current to meet OEM low-power requirements. |
| Side Marker Lighting | Interior Ambient Lighting |
Use Scenario: Low-profile side marker module requiring EMI-robust, thermally efficient drive. IC Role / Device Role / Timing Role: High-side current regulator with integrated ESD (±2 kV HBM) and thermal shutdown. Use Value: Exposed pad package achieves RthJC = 8 K/W, allowing operation at 120 mA/channel without external heatsink. | Use Scenario: RGB ambient lighting strip with independent channel control for mood lighting. IC Role / Device Role / Timing Role: Three-channel current source enabling independent brightness tuning per color segment. Use Value: IN_SET resistor configuration allows factory-set current matching across R/G/B LEDs without trimming firmware. |
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 N-1 latch | Requires microcontroller for configuration and fault polling; lacks autonomous latched diagnosis | Choose when system-level diagnostics are handled by host MCU and higher channel count is needed |
| TLD2314EL | 4-channel, lower max current (70 mA), same PG-SSOP-14 package, identical EN/PWMI logic | Not suitable for 120 mA loads; shares pinout compatibility but reduced thermal margin | Choose only for lower-current interior lighting where footprint reuse is critical |
Compared with ASL3416SHN and TLD2314EL, the TLD1315ELXUMA1 uniquely combines latched N-1 diagnosis, VS-based PWM, and 120 mA per channel in PG-SSOP-14-making it optimal for cost-sensitive, MCU-light automotive lighting modules requiring autonomous fault handling.
Availability
TLD1315ELXUMA1 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 lifecycles.
Supply support for TLD1315ELXUMA1 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 AEC-Q100 qualification leadership.
The LITIX™Basic product line delivers robust, cost-optimized LED drivers for automotive lighting systems where reliability, thermal resilience, and diagnostic capability are mandatory-not optional.
FAQ
What is the function of the N-1 pin on TLD1315ELXUMA1?
The N-1 pin is an open-drain latched diagnostic output that asserts low when an open-load or short-to-VS fault occurs on any of the three output channels. It remains latched until the device is power-cycled or reset via EN pin toggle, enabling persistent fault capture for ECU-level logging without continuous polling.
Can TLD1315ELXUMA1 drive LEDs directly from a 24 V truck battery?
Yes. The device supports 5.5 V to 40 V operating voltage, covering 12 V passenger car and 24 V commercial vehicle battery systems. Its absolute maximum VS rating is 40 V, and it withstands load-dump transients up to that level when properly decoupled with ≥1 µF ceramic capacitor at the VS pins.
How does the IN_SET pin adjust output current?
The IN_SET pin accepts an external resistor (RSET) between IN_SET and GND to set nominal output current. At RSET = 12 kΩ, IOUT(nom) = 60 mA per channel. Current scales inversely with RSET value, and a PTC thermistor can replace the fixed resistor to reduce current during LED overtemperature conditions.
Is the exposed pad on PG-SSOP-14 electrically connected?
Yes-the exposed pad (EP) is internally connected to GND and must be soldered to a large PCB copper area tied to the main GND plane. This connection is essential for achieving the specified RthJC = 8 K/W thermal resistance and preventing thermal shutdown during 120 mA/channel operation.
TLD1315ELXUMA1 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
TLD1315ELXUMA1 FAQ
1.How can I place an order for TLD1315ELXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD1315ELXUMA1 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 TLD1315ELXUMA1 reliable?
The price and inventory of TLD1315ELXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD1315ELXUMA1 is usually 5 days.
3.What payment methods are accepted for TLD1315ELXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD1315ELXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD1315ELXUMA1?
TLD1315ELXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD1315ELXUMA1 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 TLD1315ELXUMA1?
For technical support, including TLD1315ELXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD1315ELXUMA1 requirements.
6.How does Aetrix verify that TLD1315ELXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLD1315ELXUMA1 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 TLD1315ELXUMA1 meets industry standards.
7.What is the process for return or replacement of TLD1315ELXUMA1?
All TLD1315ELXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLD1315ELXUMA1, 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 TLD1315ELXUMA1 part is unused and in its original packaging.
Return procedure for TLD1315ELXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLD1315ELXUMA1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
