TLD5098EPXUMA1 - 45V Multi-Topology LED Controller | Infineon
MPN: TLD5098EPXUMA1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.18 | $2.18 |
| 10 | $1.95 | $19.50 |
| 100 | $1.66 | $166.00 |
| 500 | $1.44 | $720.00 |
| 1,000 | $1.28 | $1,280.00 |
| 2,500 | $1.15 | $2,875.00 |
TLD5098EPXUMA1 Overview
What is a multi-topology LED controller? A multi-topology LED controller is a power-management IC whose external MOSFET, inductor, diode, and capacitor selection determines which switching-converter topology (Boost, Buck, Buck-Boost, SEPIC, or Flyback) is realized on the PCB. By reconfiguring the passives around the same controller silicon, designers cover high-side LED driving, low-side LED driving, and battery-fed constant-current applications without changing ICs. The TLD5098EP belongs to the broader LITIX Power linear and switching LED-driver family from Infineon and sits inside the power-management IC category used in automotive and industrial solid-state lighting.
Key features of the TLD5098EPXUMA1 include adjustable switching frequency from 100 kHz to 500 kHz, integrated protection features (open-LED, shorted-LED, over-temperature, and input undervoltage), 4.5V to 45V wide input supply, 5V internal reference, and support for both analog (variable current via VSET pin) and PWM dimming (digital duty cycle control). The exposed-pad PG-TSDSO-14 package improves thermal dissipation for sustained high-current LED drive stages in headlamp and daytime-running-light modules.
The architecture combines a current-mode PWM controller, an internal 5V regulator, gate driver for an external N-channel MOSFET, and a comprehensive fault-detection block. Designers select the external MOSFET, inductor, and sense resistor to scale output current up to several amperes, while the IC handles closed-loop regulation, soft-start, and protection sequencing.
Typical applications include automotive LED headlights, daytime running lights, turn indicators, fog lamps, signal and interior lighting, as well as industrial and architectural LED drivers and emergency lighting requiring a wide-input multi-topology constant-current source.
When designing with the TLD5098EPXUMA1, choose the topology (Boost, Buck, Buck-Boost, SEPIC, Flyback) by selecting external components based on the LED string voltage vs battery/bus voltage, ensure the exposed pad is soldered to a sufficient copper pour for thermal relief, and validate protection thresholds against worst-case fault conditions.
This page synthesizes distributor pricing, drop-in alternatives from the LITIX Power family, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for TLD5098EPXUMA1 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 TLD5098EPXUMA1 (same form factor and footprint) β differing in Package, Dimming Control, Operating Temperature Range, Protection Features.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TLD5097EPXUMA1
β Drop-Inβ In Stock
$1.9 / Unit
View Datasheet βTLD1125ELXUMA1
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$0.85 / Unit
View Datasheet βTLD5098EPXUMA1 Maximum Ratings & Electrical Characteristics
| Topology Support | Boost, Buck, Buck-Boost, SEPIC, Flyback |
| Input Voltage Range | 4.5 V to 45 V |
| Number of Outputs | 1 |
| Output Current (internal driver) | 90 mA |
| Switching Frequency Range | 100 kHz to 500 kHz |
| Dimming Control | Analog and PWM |
| Internal Reference Voltage | 5 V |
| Package | PG-TSDSO-14 (TSSOP-14 with exposed pad) |
| Mounting Type | Surface Mount |
| Protection Features | Open-LED, shorted-LED, over-temperature, input undervoltage |
| External MOSFET Drive | Yes (gate driver for external N-FET) |
| RoHS Status | Compliant |
| Automotive Qualified | Yes (AEC-Q100 targeted family) |
TLD5098EPXUMA1 Pin Configuration
| Pin 1 | IN β Input supply voltage (4.5V to 45V) |
| Pin 2 | VSET β Analog dimming voltage input |
| Pin 3 | PWMIN β PWM dimming input |
| Pin 4 | RT β Switching frequency setting resistor |
| Pin 5 | COMP β Compensation network node |
| Pin 6 | FB β Current sense feedback input |
| Pin 7 | GND β Ground |
| Pin 8 | SW β Switch node to external inductor/MOSFET |
| Pin 9 | DRV β Gate driver output for external N-FET |
| Pin 10 | VCC β Internal 5V regulated supply output |
| Pin 11 | FLAG β Fault indicator output (open-drain) |
| Pin 12 | EN β Enable input |
| Pin 13 | NC β Not connected (per datasheet) |
| Pin 14 | EP β Exposed thermal pad (connect to GND) |
Typical Applications
TLD5098EPXUMA1 is suitable for 6 applications: Automotive LED Headlights, Daytime Running Lights (DRL), Automotive Turn Indicators and Fog Lamps, Industrial LED Lighting Fixtures, Architectural and Decorative LED Strips, Emergency and Safety Lighting.
Automotive LED Headlights
The Infineon TLD5098EPXUMA1 is engineered for high-current automotive LED headlamp modules where VIN spans 6V (cold crank) to 45V (load dump). Its 100-500 kHz adjustable switching frequency lets designers shrink magnetics for compact headlamp housings, while the 5V internal reference and integrated gate driver minimize external component count. The TLD5098EPXUMA1's open-LED and shorted-LED detection protects against wiring harness faults that would otherwise destroy expensive LED arrays. Compared to linear drivers, the switching topology holds efficiency above 90% even at high VIN-VLED differentials, which is critical for sealed headlamp assemblies where heat sinking is limited. The AEC-Q100-targeted qualification makes this controller suitable for OEM front-lighting platforms.
Recommended
Daytime Running Lights (DRL)
DRL modules require a wide-input, PWM-dimmable constant-current source - exactly the role of the TLD5098EPXUMA1. The integrated analog and PWM dimming inputs allow a body control module to command DRL brightness from 10% to 100% without external DAC hardware. With VIN support up to 45V, the same controller handles 12V passenger cars and 24V commercial trucks without re-design. The exposed-pad PG-TSDSO-14 package dissipates gate-driver losses efficiently into the PCB copper pour, eliminating the need for an external heatsink in typical 350-700 mA DRL strings. Over-temperature protection prevents PCB delamination in sealed lamp housings exposed to engine-bay heat soak.
Recommended
Automotive Turn Indicators and Fog Lamps
Turn signals and fog lamps require compact, high-reliability LED drivers with diagnostic feedback - both delivered by the TLD5098EPXUMA1. The FLAG pin output alerts the BCM to open-LED or shorted-LED conditions, supporting ISO 7637 and OEM-specific diagnostic requirements. The 4.5V minimum input lets the controller operate through engine-crank voltage sags without flicker. Multi-topology support means the same IC drives both high-side LED strings (Boost for >VIN LED stacks) and low-side strings (Buck for <VIN strings) in adjacent fog-lamp and indicator PCBs - simplifying vendor consolidation across an automotive lighting platform.
Recommended
Industrial LED Lighting Fixtures
Industrial high-bay and street-lighting fixtures benefit from the TLD5098EPXUMA1's 4.5-45V input range, which accepts 24V industrial bus rails and 36V/48V solar battery stacks without pre-regulation. The 90 mA internal gate-driver capability scales LED string current via the external MOSFET selection - one controller covers 350 mA downlights and 2 A street-light heads. SEPIC topology support enables grounded-load wiring required by some industrial safety standards. The exposed-pad TSSOP-14 package, mounted on a 1 square-inch copper pour, delivers thermal resistance low enough for fully-potted IP67 luminaire designs without active cooling.
Recommended
Architectural and Decorative LED Strips
Architectural RGBW and tunable-white LED installations often use 24V or 48V constant-voltage rails with constant-current driver modules - the TLD5098EPXUMA1's Buck topology handles 24V-to-LED-string conversion efficiently in these modules. PWM dimming at frequencies up to several kHz supports smooth color mixing without flicker visible to the human eye. The exposed-pad package fits inside slim aluminum extrusions commonly used in architectural cove and accent lighting. Multi-topology flexibility allows the same IC family to drive 12V, 24V, and 48V LED installations by changing only the inductor and sense resistor, simplifying SKU management for luminaire OEMs.
Recommended
Emergency and Safety Lighting
Emergency lighting systems must operate from battery voltages that decline over discharge cycles - the TLD5098EPXUMA1's 4.5V minimum input maintains LED drive even from deeply discharged 6V or 12V backup batteries. Integrated open-LED and shorted-LED detection supports mandatory self-test diagnostics required by IEC 60598-2-22 for emergency luminaires. The wide 100-500 kHz switching range allows efficiency optimization for the long-runtime, low-power-consumption profile typical of battery-backed egress fixtures. Flyback topology support enables isolated LED strings required when the emergency driver shares a chassis with line-voltage mains circuits.
Recommended
Recommended Products Summary
Engineering reference data for TLD5098EPXUMA1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLD5097EPXUMA1 | TLD1125ELXUMA1 |
|---|---|---|---|
| Brand | Infineon | Infineon | Infineon |
| Package | PG-TSDSO-14 | PG-TSDSO-14 - same | PG-TSDSO-14 - same |
| Topology | Multi-topology (Boost/Buck/Buck-Boost/SEPIC/Flyback) | Multi-topology (same) | Linear (single-topology) |
| Switching Frequency Range | 100 kHz to 500 kHz | 100 kHz to 500 kHz (same) | N/A (linear) |
| Automotive Qualified | Yes (AEC-Q100 targeted family) | Yes (AEC-Q100 targeted family) | Yes (AEC-Q100) |
Key Differentiators
- Only 14-pin multi-topology controller with AEC-Q100 targeting (vs TLD1125ELXUMA1)
- Higher maximum input voltage than TLD5097EPXUMA1 (vs TLD5097EPXUMA1)
- Integrated LED-specific fault protection (vs Generic PWM controllers (e.g., discrete UC2843-based designs))
Design Notes
The PG-TSDSO-14 package's exposed thermal pad is the primary heat-dissipation path. Solder the EP to a copper pour of at least 100 mm^2 on top and bottom layers, stitched with thermal vias (9-16 vias, 0.3 mm drill). At 500 kHz switching with a medium-power MOSFET, gate-drive losses can reach 200-300 mW; without proper EP soldering, junction temperature may exceed 125 C at high ambient. Always follow the Infineon application note layout for TSSOP-EP packages.
Do not omit the RT resistor - the TLD5098EPXUMA1 will not switch without it. The RT value must be a 1% tolerance resistor to maintain accurate switching frequency across production lots. Also ensure the VCC decoupling capacitor (1 uF X7R minimum) is placed within 3 mm of the VCC pin; insufficient VCC decoupling causes gate-drive UVLO faults under high dV/dt switching transients, leading to false FLAG-pin fault reports during normal operation.
Keep the SW node trace as short and wide as possible - this node carries the full switching current with dV/dt up to 1 V/ns. A long SW trace couples noise into the FB and COMP pins, causing LED current instability and audible flicker in PWM-dimmed installations. Place the current-sense resistor in the source return path of the external MOSFET with a Kelvin connection to the FB pin to avoid ground-bounce errors.
Switching converters with the TLD5098EPXUMA1 can radiate EMI above 30 MHz; for automotive CISPR 25 Class 5 compliance, add a common-mode choke on the input supply and place an input pi-filter (10 uF + ferrite bead + 10 uF) within 10 mm of the IN pin. Modulating the switching frequency (frequency dithering) via a small AC injection on the RT pin can spread the EMI spectrum and reduce peak emissions by 6-10 dB uV.
Compliance Information
RoHS and REACH compliant per Infineon product page and LCSC listing. AEC-Q100 qualification typical for the LITIX Power TLD5xxx family. Halogen-free status not explicitly stated in scraped data - marked unknown.
