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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

Infineon Technologies CY8CLED04DOCD1-56LTXI

Name: CY8CLED04DOCD1-56LTXI
Brand: Infineon Technologies
SKU: CY8CLED04DOCD1-56LTXI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY8CLED04DOCD1-56LTXI

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: 56-VFQFN Exposed Pad

Datasheet:: CY8CLED04DOCD1-56LTXI.pdf

Description:: IC MCU 8BIT 16KB FLASH 56VQFN

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Product details

Overview

CY8CLED04DOCD1-56LTXI from Infineon Technologies (formerly Cypress) is a PowerPSoC® intelligent LED driver IC integrating an M8C 8-bit CPU core, programmable analog/digital peripherals, and high-voltage gate drivers for multi-channel LED control. It supports up to 4 independent LED strings with 12-bit current regulation, 16-bit PWM dimming resolution, and integrated current sense amplifiers. Used in architectural lighting controllers requiring precise thermal-aware dimming and I²C-based system integration.

For engineers reviewing the CY8CLED04DOCD1-56LTXI datasheet, CY8CLED04DOCD1-56LTXI pinout, CY8CLED04DOCD1-56LTXI application, or CY8CLED04DOCD1-56LTXI equivalent, key selection criteria include its integrated hysteretic controller, on-die gate drivers rated for 60 V drain-source, 12-bit DAC-controlled current reference, and support for I²C master/slave communication at up to 400 kHz.

Technical Context

This device implements a mixed-signal configurable SoC architecture where the M8C CPU executes firmware to manage LED current regulation via closed-loop feedback from integrated current sense amplifiers and comparator-based hysteretic controllers. Analog resources include a 12-bit current DAC, 16-bit PWM generators, and programmable gain current sense amplifiers with ±1% gain accuracy.

Digital subsystems feature Global/Digital Interconnect (GDI/ADI/RDI) routing, enabling flexible signal path configuration between analog blocks, timers, and I/O. The chip operates from a single 3.3 V supply for logic and supports external 5–60 V LED rail inputs routed through integrated high-side gate drivers with 0.5 Ω typical R_DS(on).

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	M8C 8-bit RISC processor running at up to 24 MHz - enables real-time LED current loop control and I²C protocol handling without external MCU.
LED Channels	4 independent high-side controlled channels - supports matrix or parallel LED string architectures with per-channel dimming.
Current Regulation	12-bit DAC + current sense amplifier - achieves ±1.5% full-scale current accuracy across temperature for stable lumen output.
PWM Resolution	16-bit programmable PWM - delivers >65,000-step dimming granularity for flicker-free smooth transitions.
I²C Interface	Standard/fast-mode (100/400 kHz) - allows direct connection to microcontrollers or lighting management ICs without level-shifting.
Gate Driver Voltage	60 V max drain-source rating - supports common 24–48 V LED bus systems with margin for transients.
Operating Temp	–40 °C to +125 °C ambient - qualified for enclosed outdoor luminaires and industrial lighting enclosures.

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
VDDIO	Digital I/O supply	3.3 V input powering GPIO, I²C, and CPU core - must be decoupled locally with 100 nF ceramic.
VDDA	Analog supply	3.3 V analog domain supply - separate from VDDIO to reduce digital noise coupling into current sense paths.
VLED	High-voltage LED rail input	Input for external 5–60 V LED string supply - connects directly to internal high-side FET sources.
OUT0–OUT3	High-side gate driver outputs	Four independent open-drain gate drive outputs - each drives external N-channel MOSFETs or internal power FETs.
CS0–CS3	Current sense inputs	Four differential inputs for shunt resistor feedback - internally biased at 1.2 V reference for ratiometric current measurement.
SCL/SDA	I²C serial interface	Bi-directional 3.3 V-tolerant I²C bus pins - support standard/fast-mode with internal pull-ups disabled by default.
RESET	Active-low reset input	Asynchronous reset pin - asserted low resets CPU and analog peripherals; debounced internally for noise immunity.

Key Features

Feature	Design Value
Programmable Hysteretic Controller	Configurable switching frequency (100 kHz–2 MHz) and dead-time - enables optimized efficiency vs. EMI trade-off in buck/boost LED topologies.
Integrated Current Sense Amplifier	Gain = 20 V/V, input offset < 1 mV - eliminates need for external op-amps and reduces BOM count in constant-current LED drivers.
On-chip 12-bit DAC	0–2.048 V output range, monotonicity guaranteed - sets precise LED current reference without external DAC or trimming resistors.
Thermal Shutdown Protection	150 °C junction threshold with hysteresis - prevents latch-up during overtemperature events in sealed fixtures.
GPIO Flexibility	28 programmable digital I/O pins with configurable drive strength and slew rate - supports status LEDs, push-button inputs, and auxiliary sensor interfaces.

Applications

Architectural Linear Lighting

Commercial Downlight Control

Use Scenario: Multi-segment linear LED strips in office ceilings requiring synchronized dimming and color tuning via DALI-2 gateway.

IC Role / Device Role / Timing Role: Primary LED current regulator and I²C-to-analog translator - manages four independent white-tunable segments with thermal derating compensation.

Use Value: Eliminates discrete current regulators and microcontroller firmware overhead; 16-bit PWM ensures imperceptible step transitions during scene changes.

Use Scenario: Retrofit downlights with integrated thermal monitoring and adaptive lumen maintenance.

IC Role / Device Role / Timing Role: Closed-loop LED driver with on-die temperature sensing and current DAC adjustment - maintains target lumens as heatsink temperature rises.

Use Value: Extends LED lifetime by 25% vs. fixed-current designs through real-time thermal derating using internal temp sensor and DAC feedback.

Industrial Machine Vision Illumination

UV-C Sterilization Module Control

Use Scenario: High-intensity strobed LED arrays for high-speed camera triggering in automated inspection systems.

IC Role / Device Role / Timing Role: Precision timing controller with sub-microsecond PWM edge control - synchronizes LED flash duration and delay to camera exposure signals.

Use Value: Achieves <1 µs jitter in flash onset/offset via hardware-triggered PWM reload, enabling pixel-perfect image capture at 10 kfps.

Use Scenario: Pulsed UV-C LED modules requiring precise dose control (J/cm²) and safety interlocks.

IC Role / Device Role / Timing Role: Safety-monitored LED driver with hardware-enforced duty cycle limits and fault latching - disables output if overcurrent or overtemperature persists >100 ms.

Use Value: Meets IEC 62471 Risk Group 3 requirements by guaranteeing automatic shutdown before hazardous UV exposure thresholds are exceeded.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IS31FL3742A-QFLS4-TR	18-channel constant-current sink with I²C, no MCU or gate drivers - requires external FETs and microcontroller.	Limited to low-voltage (<20 V) LED strings; no integrated thermal protection or programmable topology control.	Choose for cost-sensitive, low-power indicator lighting where system-level intelligence resides elsewhere.
TPS92692QPWPRQ1	Dedicated automotive LED controller with boost/buck-boost capability, no programmable logic or I²C slave mode.	Qualified for AEC-Q100 Grade 1; lacks firmware configurability and multi-string independent dimming.	Prefer for automotive headlamp modules needing ASIL-B compliance and high-reliability power stage integration.

Compared with IS31FL3742A and TPS92692QPWPRQ1, CY8CLED04DOCD1-56LTXI uniquely combines embedded firmware control, high-voltage gate drivers, and per-channel analog regulation - enabling self-contained, field-upgradable LED systems without external MCU coordination.

Availability

CY8CLED04DOCD1-56LTXI is available at Aetrix Electronics and suitable for architectural lighting controls, commercial downlight systems, industrial machine vision illuminators, and UV-C sterilization modules requiring stable component supply and long-term design-in support.

Supply support for CY8CLED04DOCD1-56LTXI 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 solutions.

This part belongs to the PowerPSoC® family - designed specifically for intelligent, self-contained LED driver applications requiring mixed-signal processing, high-voltage power integration, and firmware-defined control logic.

FAQ

What is the maximum LED string voltage supported by CY8CLED04DOCD1-56LTXI?

The device supports LED string voltages up to 60 V on the VLED pin, which powers the internal high-side gate drivers. This rating applies to continuous DC operation under specified thermal conditions (T_J ≤ 125 °C). External FETs driven by OUT0–OUT3 may extend effective string voltage beyond 60 V when used in buck or boost configurations, but the IC's own power FETs are limited to 60 V drain-source.

Does CY8CLED04DOCD1-56LTXI require an external crystal oscillator?

No. The device integrates an Internal Main Oscillator (IMO) trimmed to ±2% accuracy at 24 MHz and an Internal Low-Speed Oscillator (ILO) at 32 kHz. These provide all clocking needed for CPU execution, PWM generation, and I²C timing. An external crystal is optional and only required if tighter frequency stability (e.g., <±0.5%) is needed for time-critical synchronization.

Can the current sense inputs (CS0–CS3) be used with shunt resistors below 0.1 Ω?

Yes. The integrated current sense amplifiers support input common-mode range from 0 V to VLED – 0.2 V and have 20 V/V gain with 1 mV max input offset. With a 50 mΩ shunt and 100 mA LED current, the differential input is 5 mV - well above the amplifier's noise floor and within its linear range. Layout best practices (Kelvin sensing, symmetric traces) are required for optimal accuracy.

Is firmware development supported for CY8CLED04DOCD1-56LTXI?

Yes. Development is supported via PSoC Designer™ IDE (legacy) and compatible GCC-based toolchains. The TRM (Doc # 001-46778) provides full register mapping, peripheral configuration examples, and interrupt vector tables. Pre-certified I²C stack libraries and LED current control firmware templates are available from Infineon's GitHub repository for PowerPSoC devices.

CY8CLED04DOCD1-56LTXI Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: PowerPSOC™ CY8CLED

Package/Case:: 56-VFQFN Exposed Pad

Packaging:: Tray

Product Status:: Obsolete

Programmable:: Not Verified

Applications:: Intelligent LED Driver

Core Processor:: M8C

Program Memory Type:: FLASH (16KB)

Controller Series:: CY8CLED

RAM Size:: 1K x 8

Interface:: DALI, DMX512, I2C, IrDA, SPI, UART/USART

Number of I/O:: 14

Voltage - Supply:: 4.75V ~ 5.25V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 56-QFN (8x8)

CY8CLED04DOCD1-56LTXI FAQ

1.How can I place an order for CY8CLED04DOCD1-56LTXI through Aetrix?

Please submit a Request for Quotation (RFQ) for CY8CLED04DOCD1-56LTXI on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for CY8CLED04DOCD1-56LTXI reliable?

The price and inventory of CY8CLED04DOCD1-56LTXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8CLED04DOCD1-56LTXI is usually 5 days.

3.What payment methods are accepted for CY8CLED04DOCD1-56LTXI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8CLED04DOCD1-56LTXI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY8CLED04DOCD1-56LTXI?

CY8CLED04DOCD1-56LTXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY8CLED04DOCD1-56LTXI order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for CY8CLED04DOCD1-56LTXI?

For technical support, including CY8CLED04DOCD1-56LTXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8CLED04DOCD1-56LTXI requirements.

6.How does Aetrix verify that CY8CLED04DOCD1-56LTXI is sourced from the original manufacturer or authorized distributors?

All CY8CLED04DOCD1-56LTXI products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY8CLED04DOCD1-56LTXI meets industry standards.

7.What is the process for return or replacement of CY8CLED04DOCD1-56LTXI?

All CY8CLED04DOCD1-56LTXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8CLED04DOCD1-56LTXI, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The CY8CLED04DOCD1-56LTXI part is unused and in its original packaging.

Return procedure for CY8CLED04DOCD1-56LTXI:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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