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Infineon Technologies ILD2111XUMA2
- Part No.:
- ILD2111XUMA2
- Manufacturer:
- Infineon Technologies
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ILD2111XUMA2.pdf
- Description:
- IC LED DRIVER CTRLR PWM 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:3,573
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Product details
Overview
ILD2111XUMA2 from Infineon Technologies is a digital DC/DC buck LED controller IC implementing hysteretic current regulation for constant-current LED driving, supporting 16-step adjustable output current (1:4 dynamic range), ±5% current accuracy over temperature and load, and flicker-free phase-aligned PWM dimming via external signal. It serves as the core control engine in 2-stage professional LED lighting systems with integrated PFC+flyback front-end.
For engineers reviewing the ILD2111XUMA2 datasheet, ILD2111XUMA2 pinout, ILD2111XUMA2 application, or ILD2111XUMA2 equivalent, key selection criteria include its UART-configurable protection thresholds (OTP-based parameter set), dual-mode temperature sensing (TS pin + internal), gate driver output capability (GD0), and VIN input voltage measurement interface - all critical for robust, field-tunable LED driver design.
Technical Context
The ILD2111XUMA2 integrates an ASSP digital microcontroller engine executing real-time hysteretic current regulation using CS pin shunt sensing and GD0 MOSFET gate drive. Its control loop dynamically adjusts switching frequency to maintain fixed current ripple across varying input voltage (VIN), load, and external component tolerances.
It implements dual-path temperature protection: external PTC sensing on TS pin with programmable hot/critical thresholds, plus internal die temperature monitoring. Protection logic includes open/short load detection, VIN undervoltage/overvoltage lockout, VOUT undervoltage/overvoltage, overpower limiting, and Level-2 overcurrent (OCP2) with configurable restart delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Digital buck controller for constant-current LED driving in CCM mode |
| Output Current Accuracy | ±5% over full output current range and operating temperature (–40°C to +125°C) |
| Current Adjustment | 16 discrete steps via external resistor; 1:4 min/max dynamic range |
| PWM Dimming | Flicker-free, phase-aligned dimming synchronized to external PWM signal on PWM pin |
| Protection Features | Open/short load, VIN UV/OV, VOUT UV/OV, overpower, OCP2, dual-mode overtemperature (TS + internal) |
| Configuration Interface | Single-pin UART on REF/SC pin for in-circuit calibration and parameter patching |
| Gate Driver Output | GD0 pin directly drives N-channel MOSFET (e.g., BSP373) without external driver |
Pinout & Package
Package: PG-DSO-8-58 (150-mil SOIC-8 variant with exposed thermal pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TS | Temperature Sensor Input | Accepts PTC or passive thermistor for external temperature monitoring; enables smart overtemperature protection with two threshold levels |
| REF/SC | Reference Current / UART Serial Communication | Configures reference current at startup via RC network; re-purposed as UART TX/RX for parameter configuration and calibration |
| CS | Current Sense Input | High-side shunt voltage input for hysteretic current regulation loop; supports precise ±5% current accuracy |
| GD0 | Gate Driver Output | Direct-drive output for N-channel power MOSFET; eliminates need for external gate driver in compact LED drivers |
| VIN | Voltage Input Sensing | Measures DC bus voltage via external resistor divider; enables VIN-dependent protections (UV/OV lockout) |
| PWM | PWM Dimming Signal Input | Accepts external PWM signal (100 Hz–20 kHz) to control LED brightness with phase alignment and zero-flicker behavior |
| VCC | Positive Supply Voltage | IC power supply input (4.5–5.5 V); powers internal logic, UART, and gate driver circuitry |
| GND | Power and Signal Ground | Common return path for power stages, analog sensing, and digital communication; requires low-impedance PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic Current Regulation | Digital control loop maintains ±5% LED current accuracy without external compensation components |
| Configurable Protection Thresholds | All protections (VIN UV/OV, VOUT UV/OV, overpower, OCP2, temperature) are user-adjustable via UART and stored in OTP memory |
| Phase-Aligned PWM Dimming | Eliminates visible flicker by synchronizing LED current modulation to external PWM edge timing |
| Dual-Mode Temperature Monitoring | Simultaneous use of external PTC (TS pin) and internal die sensor enables adaptive thermal derating and fail-safe shutdown |
| Startup Parameter Validation | On-power-up, CRC-checked OTP parameters are loaded; invalid data triggers safe-off state with error code reporting |
Applications
| Architectural LED Luminaires | Industrial High-Bay Lighting |
|---|---|
Use Scenario: Multi-string LED arrays in recessed architectural downlights requiring precise current matching and thermal-aware dimming. IC Role / Device Role / Timing Role: Constant-current buck controller managing up to 4 parallel LED strings with independent current regulation and synchronized PWM dimming. Use Value: Enables ±5% inter-string current uniformity and flicker-free dimming down to 0.1% duty cycle - critical for premium architectural lighting quality. | Use Scenario: High-lumen-output LED fixtures in warehouses and factories with wide ambient temperature swings (–25°C to +60°C). IC Role / Device Role / Timing Role: Digital buck controller providing adaptive thermal derating via dual-mode TS + internal temperature sensing and programmable OCP2 restart delay. Use Value: Prevents premature shutdown during transient overtemperature events while ensuring long-term reliability under sustained high-temperature operation. |
| Smart Street Lighting Systems | UV-C Disinfection Modules |
Use Scenario: Networked streetlights with DALI or 0–10 V dimming interfaces requiring field-reconfigurable protection settings. IC Role / Device Role / Timing Role: UART-configurable LED controller enabling remote firmware-independent parameter updates (e.g., VIN OV threshold, dimming curve) via REF/SC pin. Use Value: Eliminates need for hardware revision when adapting to regional grid voltage variations or updated safety standards. | Use Scenario: Pulsed UV-C LED drivers for germicidal applications demanding precise current pulse shaping and overcurrent fault containment. IC Role / Device Role / Timing Role: Fast-response buck controller with Level-2 OCP2 and <100 µs restart delay to limit single-pulse energy during short-circuit transients. Use Value: Protects expensive UV-C LEDs from catastrophic failure during electrode arcing or PCB contamination events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital LED buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3409HVMM/NOPB | Analog hysteretic buck controller; no UART configuration, fixed protection thresholds, no TS pin or dual-mode thermal sensing | Lacks in-field parameter tuning and adaptive thermal management; suited for cost-sensitive, static-design applications | Select when system-level calibration and thermal adaptability are not required and BOM cost is primary constraint |
| MAX16834ATP+ | Analog current-mode buck controller with I²C interface; supports fewer protection types (no OCP2, no dual-mode OT), no phase-aligned PWM dimming | Requires external I²C master; dimming exhibits residual flicker above 1 kHz due to asynchronous PWM generation | Select when I²C infrastructure already exists and moderate dimming performance suffices |
Compared with LM3409HVMM/NOPB and MAX16834ATP+, the ILD2111XUMA2 uniquely delivers field-updatable protection thresholds, flicker-free phase-aligned dimming, and dual-path thermal monitoring - enabling higher system reliability and lighting quality in adaptive, high-value LED luminaires.
Availability
ILD2111XUMA2 is available at Aetrix Electronics and suitable for architectural LED luminaires, industrial high-bay lighting, and smart street lighting systems requiring stable component supply, long lifecycle support, and field-configurable protection behavior.
Supply support for ILD2111XUMA2 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 German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in high-efficiency LED driver solutions.
The ILD2111XUMA2 belongs to Infineon's digital LED controller product line, designed specifically for high-reliability, programmable constant-current LED drivers in professional lighting where configurability, thermal resilience, and flicker-free dimming are mandatory.
FAQ
What is the function of the REF/SC pin?
The REF/SC pin serves a dual role: during startup, it senses reference current via an external RC network to set initial operating parameters; after initialization, it functions as a single-wire UART interface for in-circuit configuration, calibration, and parameter patching - all stored in OTP memory without requiring external EEPROM.
How does the ILD2111XUMA2 achieve flicker-free PWM dimming?
It achieves flicker-free dimming by phase-aligning the internal PWM current modulation to the rising edge of the external PWM signal applied to the PWM pin. This synchronization eliminates beat frequencies and temporal current discontinuities that cause visible flicker, even at low dimming levels (down to 0.1% duty cycle) and across wide frequency ranges (100 Hz–20 kHz).
Does the ILD2111XUMA2 require external compensation components?
No. The ILD2111XUMA2 implements a fully digital hysteretic current regulation loop with embedded control algorithms, eliminating the need for external compensation networks (e.g., type-II/type-III compensators). Stability and transient response are maintained across input voltage, load, and temperature variations through real-time digital adaptation.
What protection features are configurable via UART?
All major protection thresholds are configurable via UART on the REF/SC pin: VIN undervoltage/overvoltage lockout, VOUT undervoltage/overvoltage, overpower limits (low/high current), OCP2 restart delay, and both hot/critical thresholds for external (TS pin) and internal temperature sensing - enabling full field adaptation to application-specific safety requirements.
ILD2111XUMA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Controller
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 6V
- Voltage - Supply (Max):
- 24V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8-58
ILD2111XUMA2 FAQ
1.How can I place an order for ILD2111XUMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ILD2111XUMA2 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 ILD2111XUMA2 reliable?
The price and inventory of ILD2111XUMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ILD2111XUMA2 is usually 5 days.
3.What payment methods are accepted for ILD2111XUMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ILD2111XUMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ILD2111XUMA2?
ILD2111XUMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ILD2111XUMA2 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 ILD2111XUMA2?
For technical support, including ILD2111XUMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ILD2111XUMA2 requirements.
6.How does Aetrix verify that ILD2111XUMA2 is sourced from the original manufacturer or authorized distributors?
All ILD2111XUMA2 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 ILD2111XUMA2 meets industry standards.
7.What is the process for return or replacement of ILD2111XUMA2?
All ILD2111XUMA2 units undergo pre-shipment inspection (PSI). If there is an issue with ILD2111XUMA2, 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 ILD2111XUMA2 part is unused and in its original packaging.
Return procedure for ILD2111XUMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ILD2111XUMA2 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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