TLD40203ETXUMA2 - 3-Ch 51.5mA LIN RGB LED Driver | Infineon
MPN: TLD40203ETXUMA2 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.41 | $1,205.00 |
| 1,000 | $2.15 | $2,150.00 |
TLD40203ETXUMA2 Overview
What is a linear LED driver? A linear LED driver is a class of solid-state lighting IC that regulates LED brightness by placing a controlled current-source or current-sink element in series with each LED string and modulating its on-resistance, rather than by switching the supply with an inductor. Within the broader taxonomy, a linear LED driver belongs to the LED driver category, which itself falls under power management ICs. Compared with switching (buck/boost) LED drivers, linear drivers offer lower EMI, smaller PCB footprint, and simpler BOMs at the cost of lower efficiency when the input-to-LED forward-voltage headroom is large.
Key features include three independently programmable constant-current outputs of 51.5 mA each, integrated diagnostic functions such as open-load, short-to-GND, and short-to-VBAT detection, and PWM dimming support for color-mixing and brightness control. The PG-TFDSO-16-1 thermal-enhanced package with exposed die pad allows continuous operation at elevated ambient temperatures up to 125 Β°C (junction), which is critical for sealed automotive lamp modules.
The device is built on Infineon's smart-power BCD process, integrating a LIN 2.x/2.2A/2.2B-compatible transceiver with three protected low-side current sinks. This architecture reduces external component count to a minimum: only bypass capacitors, LIN pull-up, and ESD protection are required externally, while color/brightness profiles are programmed over the LIN bus by a body-control module.
Typical applications include LIN-controlled automotive RGB ambient lighting (roof consoles, door panels, footwells), multi-color status indicators, decorative LED strips, and architectural color-tunable fixtures. The integrated diagnostics meet automotive OEM requirements for fault reporting via the LIN bus, supporting ASIL-aware system architectures.
When designing with this part, ensure the thermal pad is soldered to at least 50 mmΒ² of copper pour to keep junction temperature below 150 Β°C at full 51.5 mA on all three channels simultaneously. Because the device is a linear current sink, the input supply must be sized so that the worst-case VLED + VSAT drop remains within the 5.5 V minimum supply.
This page synthesizes distributor pricing, drop-in LIN-RGB-driver alternatives, and practical thermal/diagnostic design notes not consolidated in the manufacturer datasheet alone.
Drop-in alternatives for TLD40203ETXUMA2 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TLD40203ETXUMA2 (same form factor and footprint) β differing in Communication Interface, Diagnostic Features, Operating Temperature Range, Package, Topology.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLD40203ETXUMA1
β Drop-Inπ Reference alternative (not in catalog)
TLD40203ETXUMA3
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
TLD4020-3ET
β Drop-Inπ Reference alternative (not in catalog)
TLD700216ESXUMA1
β Drop-Inβ In Stock
$2.18 / Unit
View Datasheet βTLD40203ETXUMA2 Maximum Ratings & Electrical Characteristics
| Topology | 3-channel linear current sink |
| Number of Outputs | 3 |
| Per-Channel Output Current | 51.5 mA |
| Supply Voltage Range | 5.5 V to 29 V |
| Dimming Method | PWM (programmable via LIN) |
| Communication Interface | LIN (LIN 2.x compatible) |
| Package | PG-TFDSO-16-1 (exposed pad) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40 Β°C to +125 Β°C (Tj) |
| Diagnostic Features | Open-load, short-to-GND, short-to-VBAT |
| ESD Protection | Β±4 kV HBM (LIN bus pins, typical) |
| Maximum Junction Temperature | 150 Β°C |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| AEC-Q100 Qualification | Qualified (automotive grade) |
TLD40203ETXUMA2 Pin Configuration
| Pin 1 | OUT1 β Current sink output channel 1 (typically Red LED) |
| Pin 2 | OUT2 β Current sink output channel 2 (typically Green LED) |
| Pin 3 | OUT3 β Current sink output channel 3 (typically Blue LED) |
| Pin 4 | VSUP β Battery supply input (5.5 V to 29 V) |
| Pin 5 | LIN β LIN bus transceiver pin |
| Pin 6 | WAKE β Wake-up input (function depends on firmware variant) |
| Pin 7 | GND β Ground |
| Pin 8 | NC β Not connected (per datasheet) |
| Pin 9 | NC β Not connected (per datasheet) |
| Pin 10 | NC β Not connected (per datasheet) |
| Pin 11 | NC β Not connected (per datasheet) |
| Pin 12 | NC β Not connected (per datasheet) |
| Pin 13 | NC β Not connected (per datasheet) |
| Pin 14 | NC β Not connected (per datasheet) |
| Pin 15 | NC β Not connected (per datasheet) |
| Pin 16 | EP β Exposed pad - thermal and ground return, must be soldered to PCB |
Typical Applications
TLD40203ETXUMA2 is suitable for 6 applications: Automotive RGB Ambient Interior Lighting, Multi-Color Status Indicators, Decorative LED Strips with LIN Control, Automotive Rear Combination Lamps (RGB Functions), Smart Home Color-Tunable Downlights, Industrial RGB Tower Lights.
Automotive RGB Ambient Interior Lighting
The TLD40203ETXUMA2 is purpose-built for automotive LIN-controlled RGB ambient lighting in roof consoles, door panels, and footwells. Its three 51.5 mA current sinks directly drive R, G, and B LEDs with matched brightness, while PWM dimming via the LIN bus enables smooth color mixing and brightness fade effects. The device's -40 Β°C to +125 Β°C junction range and integrated open-load/short-to-GND/short-to-VBAT diagnostics meet OEM requirements for fault reporting to the body-control module. Compared with discrete MOSFET + op-amp solutions, it cuts BOM count and PCB area while keeping the LIN protocol stack compliant with the OEM's existing software.
Recommended
Multi-Color Status Indicators
For industrial control panels and HMIs, the TLD40203ETXUMA2 provides three independently addressable current sinks that can drive red/green/blue status LEDs from a single LIN node, reducing wiring harness complexity. Each channel's 51.5 mA capability supports both standard and high-brightness LEDs, while the LIN interface allows remote reconfiguration of color and blink pattern from a central controller. The PG-TFDSO-16-1 exposed-pad package dissipates the modest linear-drop heat directly into the PCB copper, eliminating the need for an external heatsink in well-ventilated enclosures.
Recommended
Decorative LED Strips with LIN Control
Decorative and architectural LED strips benefit from the TLD40203ETXUMA2's per-channel PWM dimming and LIN programmability. By placing one driver IC per RGB node along the strip, designers achieve individual pixel control without running dedicated PWM lines from a master MCU. The 5.5 V to 29 V supply range accommodates both 12 V and 24 V system rails, and the integrated diagnostics detect open LED, short-to-ground, and short-to-supply faults that are critical in field-deployed decorative installations. The PG-TFDSO-16-1 footprint allows dense PCB layouts behind each LED segment.
Recommended
Automotive Rear Combination Lamps (RGB Functions)
The TLD40203ETXUMA2 suits rear combination lamp sub-functions that require RGB capability such as dynamic turn indicators and welcome animations. Its AEC-Q100 qualification and 125 Β°C junction rating match under-hood and behind-lens thermal environments. Designers can drive each lamp segment with one driver and report per-channel diagnostics back to the BCM via LIN, enabling compliance with automotive functional-safety expectations for lighting fault reporting. The linear topology also eliminates the EMI emissions that switching drivers can couple into nearby radio antenna paths.
Recommended
Smart Home Color-Tunable Downlights
In smart-home lighting, the TLD40203ETXUMA2 enables a compact color-tunable downlight module that receives brightness and hue commands over a LIN-to-wireless gateway. Each channel's 51.5 mA output drives mid-power RGB LEDs at typical residential dimming levels (10-30 mA per channel), and the small PG-TFDSO-16-1 footprint fits within the confined ceiling-can geometry. The driver's integrated fault detection supports predictive-maintenance features that alert the homeowner when an LED is failing.
Recommended
Industrial RGB Tower Lights
Industrial stack-light towers commonly stack red, amber, and green indicators, but newer 'full-color' machines use RGB stacks that benefit from the TLD40203ETXUMA2's per-channel programmability. The 29 V supply tolerance accommodates 24 V industrial rails with transients, and the device's robust ESD protection on the LIN pin tolerates factory-floor handling. Through the LIN interface, a PLC can dynamically assign color codes to indicate machine state, increasing diagnostic bandwidth without adding I/O modules.
Recommended
Recommended Products Summary
Engineering reference data for TLD40203ETXUMA2 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLD40203ETXUMA1 | TLD40203ETXUMA3 | TLD4020-3ET | TLD700216ESXUMA1 |
|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TFDSO-16-1 | PG-TFDSO-16-1 | PG-TFDSO-16-1 | PG-TFDSO-16-1 | PG-TSDSO-16-1 |
| Channels | 3 | 3 | 3 | 3 | 3 |
| Supply Voltage | 5.5 V to 29 V | 5.5 V to 29 V | 5.5 V to 29 V | 5.5 V to 29 V | 5.5 V to 29 V |
| Interface | LIN | LIN | LIN | LIN | LIN |
| Dimming Method | PWM via LIN | PWM via LIN | PWM via LIN | PWM via LIN | PWM via LIN |
| Automotive Qualified (AEC-Q100) | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Integrated LIN transceiver eliminates external LIN IC (vs Discrete LIN transceiver + 3-channel LED driver solution)
- Three independent 51.5 mA current sinks with per-channel diagnostics (vs TLD700216ESXUMA1 (different package, different register map))
- AEC-Q100 qualification for automotive in-cabin lighting (vs Industrial-grade LIN LED drivers from competitors)
Design Notes
Estimated: at VSUP = 13.5 V, VLED (red channel) = 2.0 V, full-scale current 51.5 mA on all three channels, package dissipation is roughly (13.5 V - 2.0 V) Γ 0.0515 A Γ 3 β 1.78 W. The PG-TFDSO-16-1 thermal pad must be soldered to at least 50 mmΒ² of 2 oz copper on the top layer (and stitched vias to a bottom-layer copper pour) to keep the junction rise under 50 K. Always validate against the manufacturer's thermal derating curve for your specific PCB stack-up.
Place a 100 nF X7R decoupling capacitor as close as possible to the VSUP pin and a bulk 10 Β΅F electrolytic or tantalum capacitor within 5 mm to suppress load-dump and cranking transients on the automotive battery rail. The exposed thermal pad must be soldered to a continuous copper pour with at least four thermal vias (0.3 mm drill, 1 oz plating) to the inner/outer ground plane. Keep the LIN trace short and route it away from switching nodes; add a 1 nF X7R + ESD diode (e.g., Infineon ESD5V0S1B-N) right at the LIN connector pin.
Do not connect LED anodes to a supply that exceeds 29 V continuously - the OUT pins are current sinks referenced to GND and tolerate VSUP only up to the absolute-maximum rating. Do not leave the LIN pin floating; either connect it to the LIN master or to GND via a defined pull-down to avoid spurious wake-ups. When using PWM dimming below 1% duty, ensure the LIN-programmed PWM frequency stays within the driver's supported range (typically 100 Hz to 1 kHz) to avoid visible flicker artifacts. Finally, do not rely on the diagnostic bits as a safety mechanism - they are intended for service diagnostics only.
Compliance Information
AEC-Q100 qualified per Infineon product family datasheet. RoHS and REACH compliant per Infineon product page. Halogen-free per Infineon packaging materials declaration.
