TLD5097EPXUMA1 - 45V Multi-Topology LED DC-DC Controller | Infineon
MPN: TLD5097EPXUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.66 | $26.60 |
| 100 | $2.37 | $237.00 |
| 500 | $2.13 | $1,065.00 |
| 1,000 | $1.9 | $1,900.00 |
TLD5097EPXUMA1 Overview
An LED driver controller is a current-regulating power management IC that drives an external MOSFET switch to deliver precisely controlled current to an LED string. It sits in the broader hierarchy of power management ICs, providing constant-current regulation that overcomes LED forward-voltage variation due to temperature and binning. Unlike fixed-mode regulators, the TLD5097EPXUMA1's adjustable topology enables both step-up (Boost) and step-down (Buck) operation from a single part.
Key features include analog and PWM dimming inputs, integrated protection (over-current, over-voltage, over-temperature, short-circuit, open-LED detection), and 3.3% current tolerance. The 500 kHz maximum switching frequency allows small external inductors and capacitors, while the exposed thermal pad supports up to 1.5 W dissipation without a dedicated heatsink.
The device uses a peak-current-mode control architecture with slope compensation, providing cycle-by-cycle current limiting and inherent input-voltage feed-forward. The wide 4.5-45V input range makes it suitable for automotive 12V/24V bus systems, industrial 24V supplies, and high-voltage LED strings. The LITIX Power family designation indicates compliance with Infineon's automotive-grade LED driver portfolio.
Typical applications include automotive daytime running lights (DRL), front and rear lighting, industrial LED panel backlighting, signage, architectural lighting, and emergency lighting. The multi-topology flexibility allows one part number to serve multiple product variants.
When designing with this part, pay attention to the gate-drive output current of 90 mA, which limits switching MOSFET selection to logic-level parts with low total gate charge. Use 1% tolerance sense resistors for accurate LED current regulation across temperature.
This page synthesizes distributor pricing, drop-in same-family alternatives (TLD5097EL, TLD21313EPXUMA1), and practical design notes not aggregated in the manufacturer datasheet.
Drop-in alternatives for TLD5097EPXUMA1 — 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 TLD5097EPXUMA1 (same form factor and footprint) — differing in Package, Topology, Operating Temperature Range, Automotive Qualification, Dimming Method.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLD5097EL
✅ Drop-In📋 Reference alternative (not in catalog)
TLD21313EPXUMA1
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →TLD1125ELXUMA1
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →ILD8150EXUMA1
✅ Drop-In✓ In Stock
$1.15 / Unit
View Datasheet →TLD1211SJFUMA1
✅ Drop-In✓ In Stock
$0.33 / Unit
View Datasheet →TLD5097EPXUMA1 Maximum Ratings & Electrical Characteristics
| Topology Support | Boost, Buck, Buck-Boost, SEPIC, Flyback |
| Input Voltage Range | 4.5 V to 45 V |
| Switching Frequency Range | 100 kHz to 500 kHz |
| Gate Drive Output Current | 90 mA |
| Number of Outputs | 1 |
| Dimming Method | Analog and PWM |
| LED Current Tolerance | 3.3% |
| Operating Temperature Range | -40 C to +150 C |
| Package | PG-TSDSO-14 (14-TSSOP with exposed pad) |
| Mounting Type | Surface Mount |
| Internal Switch | No (external MOSFET driver) |
| Short Circuit Protection | Yes |
| Open LED Detection | Yes |
| Over-Temperature Protection | Yes |
| RoHS Status | Compliant |
TLD5097EPXUMA1 Pin Configuration
| Pin 1 | SGND — Sense ground for current measurement |
| Pin 2 | VSUP — Supply voltage input |
| Pin 3 | EN — Enable input (active high) |
| Pin 4 | PWMI — PWM dimming input |
| Pin 5 | INNI — Current sense amplifier negative input |
| Pin 6 | INPO — Current sense amplifier positive input |
| Pin 7 | RT — Timing resistor for switching frequency setting |
| Pin 8 | GND — Ground |
| Pin 9 | VCC — Internal 5V regulator output (decouple with capacitor) |
| Pin 10 | GATE — Gate drive output for external MOSFET |
| Pin 11 | STSYNC — Status / synchronization output |
| Pin 12 | VFB — Voltage feedback input |
| Pin 13 | VREF — Reference voltage output |
| Pin 14 | EP — Exposed thermal pad (connect to GND) |
Power Derating & Thermal Characteristics
No manufacturer-published SOA (Safe Operating Area) curve is available for TLD5097EPXUMA1. Always operate within the absolute maximum ratings specified in the manufacturer datasheet.
Typical Applications
TLD5097EPXUMA1 is suitable for 6 applications: Automotive Daytime Running Lights (DRL), Automotive Headlight LED Driver, Industrial LED Panel Backlighting, Architectural and Commercial Lighting, Emergency and Safety Lighting, Display Backlight for Automotive Infotainment.
Automotive Daytime Running Lights (DRL)
The TLD5097EPXUMA1 suits automotive DRL applications where 4.5-45 V input tolerates 12 V and 24 V vehicle buses including load-dump transients. Its Boost topology drives high-brightness LED strings with forward voltages above the bus voltage, while 90 mA gate-drive current switches external MOSFETs at up to 500 kHz for compact magnetics. The -40 C to +150 C operating range covers under-hood thermal environments, and integrated open-LED detection protects against string failures. Pair with an external logic-level N-MOSFET (e.g., IPD50N04S4L08ATMA1) sized for the LED string current.
Recommended
Automotive Headlight LED Driver
For automotive headlight high-beam and low-beam LED matrices, the TLD5097EPXUMA1's multi-topology capability supports Boost, Buck-Boost, and SEPIC configurations to handle varying LED string voltages across temperature. The 500 kHz switching frequency enables small inductors that fit within headlamp housing constraints. Analog and PWM dimming inputs interface directly with body control modules for adaptive driving beam (ADB) functions. Integrated short-circuit and over-temperature protection meet automotive functional safety requirements. The 90 mA gate drive can switch multiple parallel MOSFETs for high-current headlamp LEDs above 1 A.
Recommended
Industrial LED Panel Backlighting
The TLD5097EPXUMA1 drives LED backlight strings in industrial HMI panels and signage where 24 V DC bus is standard. Its Buck topology efficiently steps down from 24 V to typical LED forward voltages of 12-20 V with minimal power dissipation. The 3.3% current tolerance ensures uniform backlight brightness across the panel, and the wide input range accommodates industrial supply variations. PWM dimming at up to several kHz supports brightness control without audible flicker. The exposed thermal pad allows sustained operation at the panel's elevated ambient temperature inside sealed enclosures.
Recommended
Architectural and Commercial Lighting
For architectural LED strips and commercial downlights, the TLD5097EPXUMA1 supports SEPIC and Flyback topologies that handle non-grounded LED loads and wide input ranges from 12 V to 36 V drivers. The 4.5-45 V input accommodates universal AC-DC adapter outputs with substantial margin. Analog dimming accepts 0-10 V control signals common in commercial lighting installations. The 500 kHz switching enables slim driver housings that fit inside junction boxes. Multi-topology flexibility allows one part number to serve varied product lines from a single BOM.
Recommended
Emergency and Safety Lighting
Emergency lighting systems require battery backup operation where the TLD5097EPXUMA1's 4.5 V minimum input works directly from a single Li-ion cell or 6 V lead-acid battery. The Boost topology steps up battery voltage to drive high-voltage LED strings for emergency exit signs and path-of-egress lighting. Integrated protections prevent damage during battery voltage droop at end-of-discharge. The wide operating temperature range supports outdoor and unheated installation environments. PWM dimming allows test-mode operation at reduced brightness to extend battery runtime during power outages.
Recommended
Display Backlight for Automotive Infotainment
Automotive center-stack displays and instrument clusters use the TLD5097EPXUMA1 as a Boost controller for LED backlight strings driven from 12 V vehicle power. The 90 mA gate drive accommodates MOSFETs that switch high currents required for high-nit display brightness in sunlight-readable applications. PWM dimming frequency above 200 Hz avoids beat frequencies with TFT refresh rates. The exposed-pad PG-TSDSO-14 package supports continuous operation at elevated infotainment-cabin temperatures. Compact external inductors at 500 kHz switching enable slim display module designs.
Recommended
Recommended Products Summary
Engineering reference data for TLD5097EPXUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLD5097EL | TLD21313EPXUMA1 | TLD1125ELXUMA1 | ILD8150EXUMA1 | TLD1211SJFUMA1 |
|---|---|---|---|---|---|---|
| Package | PG-TSDSO-14 | PG-TSDSO-14 - same | PG-TSDSO-14 - same | PG-TSDSO-14 - same | PG-TSDSO-14 - same | PG-TSDSO-14 - same |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Input Voltage Range | 4.5 V to 45 V | 4.5 V to 45 V | 5 V to 40 V | 5 V to 40 V | 8 V to 80 V | 5 V to 40 V |
| Topology | DC-DC Controller (Multi-topology) | DC-DC Controller (Multi-topology) | 3-channel Linear Driver | 1-channel Linear Driver | 1-channel Linear Driver | 1-channel Linear Driver |
| Switching Frequency | 100 kHz to 500 kHz | 100 kHz to 500 kHz | N/A (linear) | N/A (linear) | N/A (linear) | N/A (linear) |
| Gate Drive Current | 90 mA | 90 mA | N/A | N/A | N/A | N/A |
| Dimming Method | Analog + PWM | Analog + PWM | PWM | PWM | Analog + PWM | PWM |
| Operating Temperature | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +125 C | -40 C to +150 C |
Key Differentiators
- Multi-topology flexibility in a single part (vs TLD21313EPXUMA1)
- Higher input voltage range (vs TLD1125ELXUMA1)
- External MOSFET for high-current capability (vs ILD8150EXUMA1)
Design Notes
Place the VCC decoupling capacitor (typically 100 nF ceramic) as close as possible to pin 9 with a short ground return to the EPAD. The exposed pad (pin 14) must be soldered to a sufficient copper area (recommended >= 25 mm^2) on the top layer to provide thermal dissipation. Use at least 4 thermal vias connecting the EPAD to inner/bottom ground planes for thermal performance. Keep the high-current switching loop (input capacitor, MOSFET drain-source, sense resistor, ground return) as small as physically possible to minimize EMI.
Estimated: At 500 kHz switching into a MOSFET with 50 nC total gate charge, the gate-drive power dissipation equals 90 mA x 5 V x 0.5 (typical switching activity) = ~225 mW. Add quiescent current draw (~5 mA typical at VSUP=12V) of approximately 60 mW. Total internal dissipation stays below 300 mW in typical applications, well within the PG-TSDSO-14 thermal capability when the EPAD is properly soldered. For ambient temperatures above 100 C, verify junction temperature against the Infineon thermal metrics in the datasheet.
Do not connect the SGND pin (pin 1) and power GND (pin 8) at the IC package - route them as separate traces that join only at the sense resistor ground terminal. Connecting them under the package creates ground bounce that corrupts current-sense measurements and causes LED current instability. Also, ensure the RT resistor (pin 7) tolerance is 1% or better to maintain switching frequency accuracy, which directly affects LED current regulation. Finally, do not exceed 45 V on VSUP even transiently - add a TVS clamp for automotive load-dump protection if the bus sees inductive spikes.
Compliance Information
Part of Infineon LITIX Power family designed for automotive LED applications. RoHS and REACH compliant per Infineon product page. AEC-Q100 qualification typical for LITIX Power family - confirm specific ordering code.
