Infineon Technologies ILD8150XUMA1

Overview

ILD8150XUMA1 from Infineon Technologies is a high-voltage buck LED driver IC with integrated 80 V/140 mΩ high-side MOSFET, delivering up to 1.5 A DC output current for constant-current LED strings. It implements hysteretic current regulation and Infineon's proprietary hybrid dimming (0.5%–100% target current), enabling flicker-free operation at 3.4 kHz modulation in sub-12.5% dimming range. Used in industrial-grade electronic control gear for high-power general lighting.

For engineers reviewing the ILD8150XUMA1 datasheet, ILD8150XUMA1 pinout, ILD8150XUMA1 application, or ILD8150XUMA1 equivalent, key selection criteria include its 8–80 V input range, cycle-by-cycle current limiting, thermal shutdown threshold, digital soft-start behavior tied to PWM frequency, and hybrid dimming curve mapping between DPWM_IN duty cycle and ILED output.

Technical Context

The ILD8150XUMA1 employs a hysteretic buck controller architecture where the CS pin senses voltage across an external current-sense resistor (RCS) to regulate LED current via two fixed thresholds (VCSH/VCSL). This enables intrinsic cycle-by-cycle overcurrent protection and fast transient response without compensation networks.

Hybrid dimming operates in two distinct modes: analog dimming (100%–12.5%) directly scales the CS reference voltage, while hybrid dimming (12.5%–0.5%) amplitude-modulates a stable 12.5% baseline at 3.4 kHz-fully compliant with IEEE 1789-2015 flicker requirements. Dimming input is a single PWM signal (250 Hz–20 kHz) applied to the DIM pin.

Key Specifications

Pinout & Package

ILD8150XUMA1 is housed in PG-DSO-8 package (8-pin, exposed pad variant not electrically connected internally). The exposed pad is recommended to be soldered to PCB ground plane for thermal enhancement only.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED driver applications.

Compared with MPQ4425AGU-AEC1-P and LM3409HVMM/NOPB, ILD8150XUMA1 delivers higher input voltage tolerance (80 V), integrated switch with lower conduction loss, and unique hybrid dimming that achieves certified flicker-free performance down to 0.5%-making it optimal for industrial and architectural lighting where safety margins and visual quality are non-negotiable.

Availability

ILD8150XUMA1 is available at Aetrix Electronics and suitable for street lighting systems, industrial high-bay fixtures, tunable white architectural lighting, and UV-C disinfection modules requiring stable component supply, long-term lifecycle assurance, and JEDEC-qualified reliability.

Supply support for ILD8150XUMA1 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 leadership in high-voltage LED drivers and silicon carbide solutions.

ILD8150XUMA1 belongs to Infineon's ILD family of high-efficiency LED drivers designed specifically for professional-grade general lighting applications demanding robustness, precision dimming, and compliance with international photobiological safety standards.

FAQ

What is the maximum allowable input voltage for ILD8150XUMA1?

The absolute maximum input voltage is 80 V DC, with under-voltage lockout activating at approximately 7.5 V. Operation within the full 8–80 V range is specified across temperature and process corners, and the integrated 80 V MOSFET provides a safety margin for transient overvoltage events common in industrial DC bus environments.

How does hybrid dimming differ from standard PWM dimming in ILD8150XUMA1?

Hybrid dimming combines analog scaling (100%–12.5%) and amplitude modulation (12.5%–0.5%) on a single DIM pin. Below 12.5%, the LED current is held steady at 12.5% and modulated at 3.4 kHz-eliminating visible flicker per IEEE 1789-2015-whereas standard PWM dimming at low duty cycles causes perceptible strobing due to low-frequency envelope modulation.

Is an external bootstrap capacitor required for ILD8150XUMA1?

Yes, a 100 nF ceramic capacitor must be placed between BOOT and SW pins to sustain gate drive for the internal high-side MOSFET. This capacitor charges during the off-time via the internal diode and supplies gate charge during on-time; improper sizing or placement causes erratic switching or thermal overstress.

Does ILD8150XUMA1 support analog (DC) dimming via voltage on the DIM pin?

No-the DIM pin accepts only a PWM signal (250 Hz–20 kHz); there is no internal DAC or voltage-to-current converter for analog dimming. Analog behavior is emulated digitally by mapping PWM duty cycle to CS reference voltage in the 100%–12.5% range, but a continuous DC voltage input will not produce proportional dimming.