ILD8150EXUMA1 - 80V Buck LED Driver 1.5A | Infineon
MPN: ILD8150EXUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.85 | $185.00 |
| 500 | $1.62 | $810.00 |
| 1,000 | $1.38 | $1,380.00 |
| 2,500 | $1.15 | $2,875.00 |
Drop-in alternatives for ILD8150EXUMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ILD8150E
✅ Drop-In📋 Reference alternative (not in catalog)
TLD21313EPXUMA1
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →TLD21421EPXUMA1
✅ Drop-In✓ In Stock
$0.78 / Unit
View Datasheet →ILD8150EXUMA1 Maximum Ratings & Electrical Characteristics
| Topology | Step-Down (Buck) |
| Input Voltage Range | 4.5 V to 80 V |
| Output Type | Constant Current (LED Driver) |
| Maximum LED Current | 1.5 A |
| Number of Outputs | 1 |
| Dimming Method | PWM and Analog (Hybrid Dimming) |
| Minimum Dimming Depth | 0.5% (Hybrid Mode) |
| PWM Dimming Frequency Range | 250 Hz to 20 kHz |
| Internal Modulation Frequency | 3.4 kHz |
| Switch Type | High-side Integrated |
| Maximum Switch Voltage | 80 V |
| Operating Temperature Range | -40C to +125C |
| Package | PG-DSO-8-27 |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
ILD8150EXUMA1 Pin Configuration
| Pin 1 | VIN — Input supply voltage (4.5V to 80V) |
| Pin 2 | GND — Ground reference |
| Pin 3 | SW — Switch node - connection to inductor and freewheeling diode |
| Pin 4 | ISENSE — LED current sense input - connect to sense resistor |
| Pin 5 | DIM/PWM — PWM dimming input (250 Hz to 20 kHz) |
| Pin 6 | VCC — Internal 5V regulator output - bypass with 100 nF capacitor |
| Pin 7 | COMP — Loop compensation node |
| Pin 8 | FB — Feedback input for output voltage regulation |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ILD8150EXUMA1 is suitable for 7 applications: Architectural LED Downlights, Industrial High-Bay LED Fixtures, Commercial Track Lighting, LED Retrofit Bulbs (A19/BR30), Emergency Lighting and Exit Signs, Outdoor Street and Area Lighting, Automotive Interior LED Lighting.
Architectural LED Downlights
The ILD8150EXUMA1's 80V maximum input voltage and 0.5% hybrid dimming depth make it ideal for architectural LED downlights that operate directly from rectified 48V or 60V mains without a separate step-down stage. The high-side integrated switch simplifies PCB layout, and the wide PWM dimming range (250 Hz to 20 kHz) supports industry-standard 0-10V and DALI dimming interfaces via an external MCU. Designers benefit from 1.5A continuous current capability for high-flux COB or multi-string LED arrays, while thermal management is simplified by the SO-8 power package with exposed pad.
Recommended
Industrial High-Bay LED Fixtures
Industrial high-bay lighting requires wide input voltage tolerance (often 24V-72V DC bus or rectified 110V AC) and high efficiency at high LED currents. The ILD8150EXUMA1's 80V input rating handles these transients with margin, and its 1.5A output drives multi-emitter LED strings or high-power COBs used in 100W-200W fixtures. The hybrid dimming allows deep dimming for daylight harvesting without flicker, and integrated protection features (OVP, OCP, OTP) reduce external component count - critical for ruggedized industrial luminaires with long service life expectations.
Recommended
Commercial Track Lighting
Track lighting fixtures use 48V SELV rails where safety isolation requires careful component selection. The ILD8150EXUMA1 provides high safety voltage margin up to 80V, exceeding typical SELV limits with substantial headroom. Its compact PG-DSO-8-27 package enables miniaturized spotlight designs, and the 0.5% dimming depth enables smooth fade-to-off behavior for premium hospitality and retail installations. Combined with high efficiency from the buck topology, it eliminates heatsink requirements in space-constrained track heads.
Recommended
LED Retrofit Bulbs (A19/BR30)
LED retrofit bulbs replace incandescent lamps and operate directly from mains-rectified DC. The ILD8150EXUMA1's 80V rating handles rectified 120V/230V AC mains with substantial margin, simplifying EMC and surge protection design. Its high-side sensing architecture simplifies the buck converter layout, and the 1.5A output supports high-brightness filament-style LED arrays. Hybrid dimming to 0.5% provides compatibility with legacy TRIAC dimmers when paired with an external bleeder circuit.
Recommended
Emergency Lighting and Exit Signs
Emergency LED drivers must operate reliably across varying battery voltages during discharge. The ILD8150EXUMA1's wide 4.5V to 80V input range covers 12V lead-acid, 24V Li-ion, and 48V battery packs used in central-battery emergency systems. Its built-in protections (OVP, OCP, OTP) ensure safe operation under fault conditions, and the high efficiency extends battery runtime during power outages. The flicker-free 3.4 kHz modulation prevents distracting flicker in exit signage during brownout conditions.
Recommended
Outdoor Street and Area Lighting
Outdoor LED street lights operate from 24V DC bus or 48V/60V SELV systems, often in harsh environments with wide temperature swings. The ILD8150EXUMA1's -40C to +125C operating range covers extreme cold-start and high-ambient conditions, while the PG-DSO-8-27 package provides good thermal dissipation in IP67-sealed luminaires. The 80V rating handles inductive transients on long cable runs, and the high efficiency reduces thermal stress on the driver in enclosed fixtures.
Recommended
Automotive Interior LED Lighting
Automotive interior LED lighting operates from 12V or 24V vehicle buses with significant voltage transients (load dump, cranking). While the ILD8150EXUMA1 is not AEC-Q100 qualified, its 80V rating easily handles automotive load-dump transients up to 40V, and its wide PWM dimming range supports CAN/LIN-driven dimming commands via an external MCU. The compact PG-DSO-8-27 package fits space-constrained headliner and footwell applications, and the high efficiency reduces thermal stress in sealed lamp housings.
Recommended
Recommended Products Summary
Engineering reference data for ILD8150EXUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ILD8150E | TLD21313EPXUMA1 | TLD21421EPXUMA1 | LM3409HV |
|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Texas Instruments |
| Package | PG-DSO-8-27 | PG-DSO-8-27 - same | PG-DSO-8-27 - same | PG-DSO-8-27 - same | SOIC-8 |
| Topology | Buck (Step-Down) | Buck (Step-Down) | Linear Current Source | Linear Current Source | Buck (PFET) |
| Input Voltage Range | 4.5V to 80V | 4.5V to 80V | 4.5V to 40V | 4.5V to 40V | 6V to 75V |
| Maximum Output Current | 1.5 A | 1.5 A | 0.12 A (per channel) | 0.10 A (per channel) | 1.5 A (external PFET) |
| Minimum Dimming Depth | 0.5% (Hybrid) | 0.5% (Hybrid) | PWM only | PWM only | 1% (PWM) |
| Integrated Switch | Yes (High-Side 80V) | Yes (High-Side 80V) | N/A (Linear) | N/A (Linear) | No (drives external PFET) |
| PWM Frequency Range | 250 Hz to 20 kHz | 250 Hz to 20 kHz | 100 Hz to 1 kHz | 100 Hz to 1 kHz | DC to 5 kHz |
| Automotive Qualified | No | No | No | No | Yes (AEC-Q100) |
Key Differentiators
- Wide 80V input voltage with high-side integrated switch (vs LM3409HV)
- 0.5% hybrid dimming depth for premium lighting (vs TLD21313EPXUMA1)
- Buck topology vs linear for high-current LED strings (vs TLD21421EPXUMA1)
Design Notes
Place the input capacitor, freewheeling diode, and inductor as close to the SW pin as possible to minimize the high-current loop area. Use a 4-layer PCB with a dedicated ground plane to reduce EMI from the buck switching node. The exposed pad on the PG-DSO-8-27 package must be soldered to a copper pour of at least 50 mm² to achieve the rated thermal performance of approximately 50 C/W junction-to-ambient on a 1 oz copper 4-layer board.
Do not omit the VCC bypass capacitor on pin 6 - a 100 nF ceramic capacitor must be placed within 2 mm of the pin. The DIM/PWM pin should not be left floating; tie it to VCC through a 10 kOhm pull-up if dimming is not used, otherwise the device may enter an undefined state. For hybrid dimming below 12.5% duty cycle, ensure the PWM frequency is at least 1 kHz to allow the internal modulation loop to settle within each PWM cycle.
Estimated: At VIN=48V, VLED=24V, ILED=1.5A, power dissipation is (48-24)x1.5 = 36W in the worst case, though buck topology dissipates primarily during switch transition and in the freewheeling diode. Realistic total dissipation is approximately 2-4W at this operating point. With theta_JA of 50 C/W on a 4-layer board, junction temperature rise is 100-200C above ambient, requiring either a reduced VLED range or forced-air cooling. For reliable operation above 1A LED current, ensure junction temperature stays below 125C.
The buck switch node on pin 3 (SW) is a high-dV/dt node that can radiate EMI. Use a snubber circuit (10 ohm + 1 nF) across the switch node to ground if EMI measurements exceed limits. The freewheeling diode should be a Schottky type (e.g., 100V/3A) with low junction capacitance. Add a small ferrite bead in series with the input supply if conducted EMI measurements fail EN 55015 Class B limits.
Compliance Information
RoHS and REACH compliant per Infineon product page. Not AEC-Q100 qualified - choose automotive-specific Infineon LED drivers for vehicle applications. Lead-free and halogen-free per Infineon datasheet.
