Infineon Technologies CY8CLED04D01-56LTXI

Overview

CY8CLED04D01-56LTXI from Infineon Technologies (formerly Cypress) is a PowerPSoC® intelligent LED driver IC integrating an 8-bit M8C CPU core, programmable analog/digital blocks, and high-voltage gate drivers for multi-channel LED control. It supports up to four independent LED channels with 12-bit PWM resolution, operates from 2.7–5.5 V supply, delivers up to 600 mA per channel, and features integrated current sense amplifiers and hysteretic controllers for closed-loop dimming in architectural and signage lighting.

For engineers reviewing the CY8CLED04D01-56LTXI datasheet, CY8CLED04D01-56LTXI pinout, CY8CLED04D01-56LTXI application, or CY8CLED04D01-56LTXI equivalent, this device serves as a fully programmable, mixed-signal LED driver with on-chip power peripherals - critical for compact, thermally constrained, and digitally controllable constant-current LED systems requiring precise brightness regulation and fault monitoring.

Technical Context

This device implements a configurable mixed-signal architecture where the M8C CPU executes firmware to manage LED current via programmable hysteretic controllers and digital modulators. Each of its four LED channels includes dedicated current sense amplifiers (gain = 20 V/V), gate drivers (±1 A peak source/sink), and high-side power FETs rated for 40 V drain-source voltage.

The analog system integrates continuous-time and switched-capacitor PSoC blocks for real-time current feedback processing, while the digital system uses Global/Digital Interconnect (GDI/ADI/RDI) to route PWM, enable, and fault signals between CPU, timers, and power peripherals - enabling synchronized multi-channel dimming with <1% current matching across channels.

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 management.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS31FL3731 and TPS92692, CY8CLED04D01-56LTXI uniquely combines embedded firmware control, integrated high-current FETs, and per-channel current sensing - enabling adaptive dimming, thermal management, and field-upgradable behavior in space-constrained LED systems.

Availability

CY8CLED04D01-56LTXI is available at Aetrix Electronics and suitable for architectural lighting, commercial signage, stage lighting, and industrial HMI applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for CY8CLED04D01-56LTXI 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 ICs with emphasis on reliability and energy efficiency.

This device belongs to the PowerPSoC® product line - engineered specifically for intelligent, self-contained LED driver applications where integration of MCU, analog power peripherals, and high-voltage gate drivers eliminates discrete support components and simplifies thermal design.

FAQ

Does CY8CLED04D01-56LTXI support analog dimming via DC voltage input?

No. This device implements digital-only dimming via 12-bit PWM generated internally by its M8C CPU or received via I²C. It does not include an analog voltage-to-PWM converter or DAC-based current reference - dimming must be controlled through firmware or I²C register writes to the PWM period and compare registers.

What is the maximum allowable LED forward voltage per channel?

The internal power FETs are rated for 40 V drain-source breakdown voltage. With typical V_DS(on) ≤ 0.3 Ω at 600 mA, the maximum supported LED string forward voltage is 38.2 V (40 V − I×R_DS(on)). Exceeding this risks FET avalanche failure during transient overvoltage events.

Can the device operate without external crystal or resonator?

Yes. It uses an internal main oscillator (IMO) trimmed to ±2% accuracy at 24 MHz, sufficient for LED timing and I²C communication. An external crystal is optional and only needed if tighter than ±0.5% frequency stability is required for synchronized multi-device systems.

Is the Flash memory field-programmable after soldering?

Yes. The device supports in-system programming (ISP) via SWD interface using standard Cypress/Infineon debug tools (e.g., KitProg3). Firmware updates can be performed post-assembly without removing the IC, provided SWD pins (SWDCK/SWDIO) are accessible and not shorted.