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Infineon Technologies CY8CLED03D02-56LTXI
- Part No.:
- CY8CLED03D02-56LTXI
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
CY8CLED03D02-56LTXI.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 56VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:881
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Product details
Overview
CY8CLED03D02-56LTXI from Infineon Technologies (formerly Cypress) is a PowerPSoC® intelligent LED driver IC integrating an 8-bit M8C CPU core, programmable analog/digital peripherals, and high-voltage gate drivers for standalone LED current regulation. It delivers up to 40 V sink-side output capability, supports I²C interface (up to 400 kHz), operates from 2.7–5.5 V supply, and features integrated hysteretic controller and current sense amplifier for closed-loop dimming in constant-current LED systems.
For engineers reviewing the CY8CLED03D02-56LTXI datasheet, CY8CLED03D02-56LTXI pinout, CY8CLED03D02-56LTXI application, or CY8CLED03D02-56LTXI equivalent, this device serves as a configurable, single-chip LED lighting controller with embedded firmware execution, analog feedback processing, and high-side/low-side switching control - critical for industrial signage, architectural lighting, and automotive interior LED modules requiring programmable dimming profiles and thermal-aware current regulation.
Technical Context
The CY8CLED03D02-56LTXI implements a mixed-signal PSoC architecture where the M8C CPU executes user firmware to configure and manage on-die analog blocks-including a 12-bit current sense amplifier (±1% gain error), hysteretic PWM controller with adjustable frequency (10–500 kHz), and digital modulator for precise current regulation. Its analog array includes continuous-time and switched-capacitor blocks enabling real-time LED current monitoring and adaptive dimming.
It integrates dedicated power peripherals: gate drivers capable of driving external N-channel MOSFETs (up to 40 V drain-source), internal voltage reference (1.2 V ±1%), and I²C slave interface for host configuration. All analog signal paths are routed through a programmable analog multiplexer supporting dynamic reconfiguration during runtime without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | M8C 8-bit RISC CPU running at up to 24 MHz - enables real-time firmware-based LED control logic and fault handling |
| LED Drive Capability | 40 V sink-side output voltage rating - supports high-brightness LED strings up to 10–12 V forward drop per string |
| I²C Interface | Standard/fast-mode (100/400 kHz) slave-only - allows host MCU to configure dimming curves, overcurrent thresholds, and thermal limits |
| Current Sense Accuracy | ±1% gain error, 12-bit resolution - enables closed-loop current regulation within ±3% total LED current tolerance |
| Operating Voltage | 2.7–5.5 V VDD - compatible with standard 3.3 V or 5 V system rails; internal LDO supplies analog/digital domains |
| Hysteretic Controller Freq | Adjustable 10–500 kHz - balances EMI reduction (lower freq) vs. ripple suppression (higher freq) in buck-derived topologies |
| Package | 56-pin QFN (7 mm × 7 mm, 0.5 mm pitch) - exposes thermal pad for >1.5 W continuous dissipation in LED driver applications |
Pinout & Package
Package: 56-pin QFN (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad (EPAD); RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | 2.7–5.5 V digital/analog core supply; requires local 1 µF ceramic decoupling |
| VSS | Digital ground reference | Common return for digital logic and I²C interface; separate from power ground for noise isolation |
| VSSA | Analog ground reference | Isolated analog return path for current sense amplifier and reference circuits to minimize coupling errors |
| SCL, SDA | I²C serial interface pins | Open-drain, 3.3 V tolerant; require external pull-ups to VDD for communication with host controller |
| OUTx (x=1–4) | High-voltage sink outputs | Four independent 40 V-rated NMOS sink drivers; each supports PWM dimming via internal modulator or external gate control |
| CSINx (x=1–4) | Current sense inputs | Differential inputs to internal 12-bit current sense amplifier; connect to low-side shunt resistors for per-channel LED current measurement |
| REFIN | External reference input | Accepts 1.2 V reference for enhanced ADC accuracy; bypassed internally if left unconnected |
| EPAD | Thermal pad | Must be soldered to PCB copper pour for thermal management; electrically connected to VSSA in most layouts |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Array | Configurable CT and SC blocks enable custom op-amp, comparator, and filter functions - eliminates need for external analog components in feedback loops |
| Integrated Hysteretic Controller | On-die PWM generator with adjustable frequency and dead-time control - supports buck, boost, and buck-boost LED driver topologies without external timing components |
| Per-Channel Current Sensing | Four independent current sense amplifiers (CSIN1–4) with 12-bit resolution - enables individual brightness calibration and open-circuit fault detection per LED string |
| Firmware-Defined Dimming Profiles | User code executed on M8C core controls fade-in/fade-out, temperature-compensated dimming, and strobe sequences - replaces fixed-function LED driver ICs with field-upgradable behavior |
| I²C Slave Configuration Interface | Supports dynamic register updates for current limits, PWM duty cycle, and fault thresholds - enables centralized lighting control in multi-node systems |
Applications
| Architectural Lighting Control | Automotive Interior LED Modules |
|---|---|
Use Scenario: RGBW LED strips in commercial building façades requiring synchronized color transitions and thermal derating. IC Role / Device Role / Timing Role: Primary LED current regulator and dimming engine; manages four independent LED channels with real-time current feedback and I²C command parsing. Use Value: Eliminates external microcontroller and analog front-end; reduces BOM count by 7 components per node while enabling per-string thermal compensation via firmware. | Use Scenario: Dashboard backlighting with ambient light adaptation and soft-start to prevent visual flicker during ignition. IC Role / Device Role / Timing Role: Standalone LED driver executing calibrated dimming curves; uses internal ILO and IMO clocks for precise timing without external crystals. Use Value: Achieves <50 µs soft-start ramp time and ±2% current stability across –40°C to +105°C, meeting OEM EMC and reliability requirements. |
| Industrial Signage Drivers | Smart Retail Display Backlights |
Use Scenario: High-brightness monochrome LED arrays in outdoor kiosks subject to wide temperature swings and voltage transients. IC Role / Device Role / Timing Role: Fault-tolerant LED controller with overvoltage lockout, open-load detection, and brown-out reset - handles 40 V transients on OUT pins. Use Value: Reduces field failure rate by detecting open-circuit conditions within 100 µs and disabling affected channel without disrupting others. | Use Scenario: Dynamic backlight zones in LCD advertising panels requiring localized dimming based on content metadata. IC Role / Device Role / Timing Role: Zone-specific current regulator with I²C-addressable registers; receives zone brightness commands from display controller over shared bus. Use Value: Enables 256-step dimming resolution per zone with <1% inter-zone current mismatch, improving contrast ratio by 3× vs. analog-only solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar intelligent LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS31FL3731-QFLS4-TR | 18-channel LED driver with built-in PWM engine; no CPU core or programmable analog; I²C only; max 40 V sink not supported | Limited to low-voltage (≤5.5 V) LED strings; no current sensing or closed-loop regulation | Select when fixed-channel count and simple dimming suffice; avoid for high-VF or thermally variable designs |
| TLC59731RTET | 3-channel 16-bit PWM LED driver with dot correction; no current sense, no HV capability, no firmware programmability | Designed for RGB LED biasing in consumer electronics; lacks fault protection and thermal management logic | Choose for cost-sensitive, low-power indicator applications; unsuitable for industrial LED current regulation |
Compared with IS31FL3731-QFLS4-TR and TLC59731RTET, CY8CLED03D02-56LTXI uniquely combines embedded firmware execution, per-channel current sensing, and 40 V sink capability - making it the only option among the three that supports closed-loop, thermally adaptive, high-voltage LED driving without external controllers.
Availability
CY8CLED03D02-56LTXI is available at Aetrix Electronics and suitable for architectural lighting control, automotive interior LED modules, and industrial signage requiring stable component supply, long-term lifecycle support, and qualified automotive-grade packaging.
Supply support for CY8CLED03D02-56LTXI 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 MCUs, and sensor solutions with broad industrial and automotive qualification.
CY8CLED03D02-56LTXI belongs to the PowerPSoC® family - designed specifically for intelligent, self-contained LED driver applications requiring integrated analog signal conditioning, programmable logic, and high-voltage power control in a single chip.
FAQ
Does CY8CLED03D02-56LTXI support standalone operation without an external microcontroller?
Yes. The integrated M8C CPU core executes user firmware stored in on-chip flash, enabling fully autonomous LED control - including current regulation, thermal derating, fault response, and I²C command interpretation - without requiring an external host MCU.
What is the maximum LED string voltage supported on the OUT pins?
The OUT pins are rated for 40 V DC sink-side operation. This supports LED strings with total forward voltage up to ~36 V (accounting for 4 V headroom), such as 10× white LEDs (3.6 V each) or 12× red LEDs (3.0 V each), under nominal thermal conditions.
Can the current sense amplifiers measure bidirectional current?
No. The CSIN inputs are configured for unidirectional, low-side shunt measurement only. Each amplifier measures voltage drop across a resistor between LED cathode and VSSA, providing positive-only current values with 12-bit resolution and ±1% gain accuracy.
Is the 56-pin QFN package thermally enhanced for continuous LED drive loads?
Yes. The package includes an exposed thermal pad (EPAD) electrically tied to VSSA. When soldered to ≥2 cm² of inner-layer copper pour with ≥6 thermal vias, it enables >1.5 W continuous power dissipation - sufficient for driving four 350 mA LED channels at full load with ≤25°C rise above ambient.
CY8CLED03D02-56LTXI 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)
CY8CLED03D02-56LTXI FAQ
1.How can I place an order for CY8CLED03D02-56LTXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8CLED03D02-56LTXI 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 CY8CLED03D02-56LTXI reliable?
The price and inventory of CY8CLED03D02-56LTXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8CLED03D02-56LTXI is usually 5 days.
3.What payment methods are accepted for CY8CLED03D02-56LTXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8CLED03D02-56LTXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8CLED03D02-56LTXI?
CY8CLED03D02-56LTXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8CLED03D02-56LTXI 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 CY8CLED03D02-56LTXI?
For technical support, including CY8CLED03D02-56LTXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8CLED03D02-56LTXI requirements.
6.How does Aetrix verify that CY8CLED03D02-56LTXI is sourced from the original manufacturer or authorized distributors?
All CY8CLED03D02-56LTXI 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 CY8CLED03D02-56LTXI meets industry standards.
7.What is the process for return or replacement of CY8CLED03D02-56LTXI?
All CY8CLED03D02-56LTXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8CLED03D02-56LTXI, 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 CY8CLED03D02-56LTXI part is unused and in its original packaging.
Return procedure for CY8CLED03D02-56LTXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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