Infineon Technologies CY8CLED01D01-56LTXQ

Overview

CY8CLED01D01-56LTXQ from Infineon Technologies (formerly Cypress) is a PowerPSoC® intelligent LED driver IC integrating an M8C 8-bit CPU core, programmable analog/digital blocks, gate drivers, and current-sense amplifiers. It delivers up to 40 V output voltage, supports 1–4 LED strings with independent PWM dimming, and operates from 4.5 V to 40 V input supply - used in automotive interior lighting and industrial status indicators.

For engineers reviewing the CY8CLED01D01-56LTXQ datasheet, CY8CLED01D01-56LTXQ pinout, CY8CLED01D01-56LTXQ application, or CY8CLED01D01-56LTXQ equivalent, key selection criteria include integrated gate driver capability, programmable hysteretic control loop, on-chip current sensing accuracy (±3% typical), and 56-pin QFN package compatibility with thermal management requirements for high-brightness LED systems.

Technical Context

This device implements a mixed-signal configurable architecture where the M8C CPU executes firmware to manage LED current regulation via closed-loop hysteretic control using internal current-sense amplifier feedback and digital modulator outputs. It integrates dedicated power peripherals including gate drivers with 0.5 A sink/source capability and a 12-bit DAC for reference voltage tuning.

The analog system includes continuous-time and switched-capacitor PSoC blocks enabling real-time current measurement and adaptive dimming response. Digital resources support I²C interface (up to 400 kHz), GPIO-controlled fault handling, and configurable clock routing for timing-critical LED modulation.

Key Specifications

Pinout & Package

Package: 56-pin QFN (8 mm × 8 mm, 0.5 mm pitch), thermally enhanced with exposed pad for LED driver thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16832AATG+T and TLC5947RTQT, CY8CLED01D01-56LTXQ uniquely combines embedded processing, integrated gate drivers, and multi-string current regulation in one package - reducing total system component count by ≥7 parts while enabling firmware-upgradable lighting behavior.

Availability

CY8CLED01D01-56LTXQ is available at Aetrix Electronics and suitable for automotive interior lighting, industrial status indicators, architectural accent lighting, and medical equipment UI lighting requiring stable component supply and long-term production continuity.

Supply support for CY8CLED01D01-56LTXQ 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive, and industrial control solutions.

This part belongs to the PowerPSoC® product line, designed specifically for intelligent, self-contained LED driver applications requiring integrated analog control, digital configurability, and robust power-stage interfacing - targeting systems where firmware-defined lighting behavior replaces fixed-function hardware.

FAQ

What is the maximum number of LED strings supported by CY8CLED01D01-56LTXQ?

The device supports up to four independent LED strings, each with dedicated current sense inputs (ISNS1–ISNS4), gate driver outputs (GD1–GD4), and individual 12-bit PWM dimming control. All strings share the same VDDPWR supply and thermal monitoring circuitry, enabling synchronized or isolated operation based on firmware configuration.

Does CY8CLED01D01-56LTXQ require external current-sense resistors?

Yes - it requires external precision shunt resistors (typically 0.1 Ω to 1 Ω) placed in the LED return path for each string. The ISNSx differential inputs measure voltage drop across these resistors; internal current-sense amplifier gain is fixed at 20 V/V, so full-scale current is determined by shunt value and input range (±100 mV differential).

Can CY8CLED01D01-56LTXQ operate without I²C communication?

Yes - it can run standalone using factory-programmed or user-loaded firmware stored in on-chip Flash. I²C is optional for runtime reconfiguration, diagnostics, or dynamic parameter updates; default operation (e.g., preset dimming curves, fault thresholds) executes autonomously after power-on reset.

What thermal management considerations apply to the 56-pin QFN package?

The exposed thermal pad must be soldered to a minimum 200 mm² copper pour connected to internal ground planes via ≥6 thermal vias (0.3 mm diameter). Junction-to-board thermal resistance is 22 °C/W; derating begins above 105 °C case temperature. Ambient airflow ≥1 m/s reduces thermal impedance by ~30% in enclosed fixtures.