Infineon Technologies ILD6150XUMA1

Overview

ILD6150XUMA1 from Infineon Technologies is a hysteretic buck LED driver IC designed for high-power constant-current LED loads in general lighting systems. It operates from 4.5 V to 60 V input, delivers up to 1.5 A average output current with ±3% accuracy, supports analog and PWM dimming, and integrates adjustable over-temperature protection. It is used in street lighting, downlights, and LED ballasts where thermal coupling to LEDs eliminates external NTC sensors.

For engineers reviewing the ILD6150XUMA1 datasheet, ILD6150XUMA1 pinout, ILD6150XUMA1 application, or ILD6150XUMA1 equivalent, key selection criteria include its 60 V max input rating, 1.5 A output capability, PG-DSO-8-27 thermally optimized package, integrated 1.6 kHz PWM generator for analog dimming, and hysteretic control architecture enabling fast current regulation without external compensation.

Technical Context

The ILD6150XUMA1 implements a hysteretic current-mode buck topology with no need for loop compensation. Its internal comparator regulates LED current by switching the external MOSFET based on sensed voltage across a low-side sense resistor, achieving sub-100 ns response to load transients.

It features dual-dimming support: analog dimming via DC voltage (0.25–2.5 V) at the PWM pin, internally converted to a fixed 1.6 kHz PWM signal; and direct external PWM dimming (100 Hz–20 kHz) with 3000:1 contrast ratio. Over-temperature protection uses an adjustable threshold set by resistor divider on Tadj pin, reducing LED current via internal PWM modulation above junction temperature limit.

Key Specifications

Pinout & Package

ILD6150XUMA1 is housed in a thermally enhanced PG-DSO-8-27 package (8-pin exposed-pad SOIC variant) with 2.5 mm creepage and optimized thermal resistance (R_thJA = 50 K/W, R_thJC = 4.5 K/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-efficiency step-down LED driver applications.

Compared with LM3409HVMM/NOPB and MPQ4425AGU-AEC1-P, ILD6150XUMA1 offers superior thermal adaptability via adjustable OTP, simpler analog dimming integration, and higher input voltage margin-making it optimal for industrial and outdoor LED lighting where robustness and minimal external components are prioritized.

Availability

ILD6150XUMA1 is available at Aetrix Electronics and suitable for street lighting, retail downlights, and LED ballast replacement programs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for Class I and II luminaires.

Supply support for ILD6150XUMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global manufacturing and quality certifications including ISO/TS 16949 and ISO 14001.

The ILD6150 belongs to Infineon's LED Driver ICs for High Power LEDs product line, engineered specifically for thermally demanding, high-efficiency constant-current LED lighting applications where reliability, accuracy, and integration reduce system-level design effort.

FAQ

What is the recommended inductor value for 1.5 A LED current?

For 1.5 A average LED current, the datasheet specifies minimum inductance of 10 µH at 1 MHz switching frequency (Figure 9). A 15 µH, 2.5 A saturation current shielded power inductor with DCR < 30 mΩ is recommended to maintain <10% peak-to-peak current ripple and ensure stable hysteretic operation across temperature.

Can ILD6150XUMA1 drive LEDs directly without an external MOSFET?

No. ILD6150XUMA1 is a controller IC only-it requires an external N-channel MOSFET connected to the Vswitch pin to handle the high-side switching path. The IC provides gate drive capability (±1 A peak) but does not integrate a power switch; this separation enables optimization of voltage rating, R_DS(on), and thermal layout per application.

How is over-temperature protection calibrated using the Tadj pin?

The Tadj pin sets the junction temperature trip point via a resistor divider between VS and GND. Using R1 = 100 kΩ from VS to Tadj and R2 = 47 kΩ from Tadj to GND yields ~145 °C trip point. The exact threshold is calculated using the formula in Section 6.3 of the datasheet, with sensitivity of 1.25 mV/°C at the internal reference.

Does ILD6150XUMA1 support 0–10 V dimming natively?

Yes-via its VB pin. Applying a 0.25–2.5 V analog voltage to VB directly controls LED brightness through internal conversion to a fixed 1.6 kHz PWM signal. This avoids audible noise and LED color shift associated with low-frequency external PWM, and requires no additional circuitry beyond a precision voltage source or DAC output.