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Infineon Technologies ILD4120E6327XUMA1
- Part No.:
- ILD4120E6327XUMA1
- Manufacturer:
- Infineon Technologies
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ILD4120E6327XUMA1.pdf
- Description:
- IC LED DRVR RGLTR PWM 1.2A 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:2,580
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Product details
Overview
ILD4120E6327XUMA1 from Infineon Technologies is a bipolar hysteretic buck LED controller IC with integrated power switch, designed for constant-current driving of high-brightness LEDs up to 1200 mA. It operates from 4.5 V to 40 V input, features analog/PWM dimming via multifunctional PWM pin, and includes overvoltage protection, thermal shutdown (125 °C typ), and open-circuit LED protection - deployed in industrial lighting and halogen replacement systems.
For engineers reviewing the ILD4120E6327XUMA1 datasheet, ILD4120E6327XUMA1 pinout, ILD4127E6327XUMA1 application, or ILD4120E6327XUMA1 equivalent, key selection criteria include verified 1200 mA output current accuracy (±3%), DSO-8 exposed-pad thermal performance, and dual GND pins enabling low-impedance return paths for high-current LED strings.
Technical Context
The ILD4120 implements a fixed-frequency hysteretic control architecture with internal bandgap reference (100 mV sense threshold) and voltage-mode feedback via Isense pin. Its bipolar process enables robust operation across -40 °C to +150 °C junction temperature range while maintaining ±3% LED current regulation.
Switching frequency is set externally by inductor value and input voltage (200–500 kHz range), with two dedicated Vswitch pins (pins 5 & 6) supporting parallel connection for enhanced current handling and reduced trace inductance in high-power LED driver layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Output Current | 1200 mA average - supports single or multi-LED strings requiring precise constant current without external current amplifier |
| Input Voltage Range | 4.5 V to 40 V - compatible with 12 V/24 V industrial rails and wide-range DC supplies |
| Sense Threshold | 100 mV ±15% hysteresis - sets LED current via Rsense = 100 mΩ for 1 A, enabling accurate scaling |
| Switching Frequency | 200 kHz typical (up to 500 kHz max) - balances EMI, inductor size, and efficiency in compact LED drivers |
| Thermal Shutdown | 125 °C typical activation - protects IC and connected LEDs during thermal overload or poor heatsinking |
| Standby Current | < 200 nA at EN = 0 V - enables ultra-low-power off-state in battery-backed or energy-sensitive lighting |
| Overvoltage Protection | 42 V trigger - clamps output when LED string opens, preventing destructive voltage spikes on downstream components |
Pinout & Package
Package: DSO-8 with exposed thermal pad (RoHS-compliant, lead-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable control input | Active-high logic input; <200 nA standby draw enables direct MCU GPIO control without level-shifting |
| 2 (PWM) | Multifunction dimming pin | Accepts 0–3 V analog voltage or 100 Hz–20 kHz PWM signal for brightness control without external circuitry |
| 3 & 4 (GND) | Dual ground terminals | Separate low-noise analog ground (pin 3) and high-current power ground (pin 4) reduce coupling in sensitive current-sense path |
| 5 & 6 (Vswitch) | Power switch collector outputs | Parallel-connected NPN collector outputs rated for 1500 mA peak; require external freewheeling diode and inductor |
| 7 (Isense) | Current sense input | High-impedance node monitoring voltage across external Rsense; 200 nA bias current minimizes measurement error |
| 8 (Vs) | Supply voltage input | 4.5–40 V input with internal UVLO; decoupling capacitor required between Vs and GND (pin 3 or 4) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bipolar power switch | Eliminates need for external transistor and gate driver, reducing BOM count and layout area in industrial LED drivers |
| Hysteretic current regulation | Provides stable 1200 mA output without compensation network or external op-amp, simplifying design for fixed-output applications |
| Inherent open-circuit LED protection | Automatically disables switching when Isense detects zero current, preventing voltage runaway during LED string failure |
| Soft-start capability | Gradually ramps LED current at power-up to limit inrush stress on LEDs and electrolytic input capacitors |
| Exposed thermal pad (DSO-8) | Enables direct PCB copper pour connection for efficient heat transfer - critical for sustained 1200 mA operation |
Applications
| Industrial LED Lighting | Halogen Lamp Replacement |
|---|---|
Use Scenario: High-bay fixtures in factory environments requiring 24 V DC input and 1200 mA constant current for multi-chip COB LEDs. IC Role / Device Role / Timing Role: Buck LED controller providing regulated current with thermal shutdown and overvoltage protection during line transients. Use Value: Enables reliable 50,000-hour operation under ambient temperatures up to 70 °C without active cooling. | Use Scenario: Retrofit MR16 or GU10 LED modules replacing 35 W halogen lamps using 12 V AC/DC supply. IC Role / Device Role / Timing Role: Constant-current source with analog dimming compatibility matching legacy TRIAC dimmer waveforms. Use Value: Delivers flicker-free dimming down to 5% brightness while maintaining ±3% current accuracy across input voltage variation. |
| Outdoor Signal Lighting | Architectural Accent Lighting |
Use Scenario: Step lights and exit signage powered from 24 V PoE or solar-charged battery banks with wide input range tolerance. IC Role / Device Role / Timing Role: LED driver with UVLO and overvoltage clamp protecting against lightning-induced surges on outdoor wiring. Use Value: Survives 42 V transient events and maintains safe LED operation during battery overcharge conditions. | Use Scenario: Linear LED strips in commercial building façades requiring uniform brightness and thermal derating at elevated ambient. IC Role / Device Role / Timing Role: Constant-current controller with thermally coupled shutdown, where PCB copper connects LED substrate to IC exposed pad. Use Value: Prevents LED color shift and lumen depreciation by limiting junction temperature to ≤125 °C under continuous drive. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL8862SP-13 | CMOS-based buck controller; requires external MOSFET; 1.5 A max output; no integrated bipolar switch | Lacks built-in power switch and thermal shutdown hysteresis; needs external OV/OC protection circuitry | Preferred when higher efficiency (>95%) and adjustable frequency are prioritized over integration and thermal robustness |
| LM3409QMH/NOPB | External N-channel MOSFET driver; 1.25 A max; 100 mV current sense; no integrated switch or thermal shutdown | Requires discrete thermal sensing and external overvoltage clamping; wider frequency range (200 kHz–2 MHz) | Chosen for automotive-grade designs needing AEC-Q100 qualification and flexible topology adaptation |
Compared with AL8862SP-13 and LM3409QMH/NOPB, the ILD4120E6327XUMA1 delivers higher system-level reliability in industrial settings through its monolithic bipolar switch, inherent open-circuit protection, and integrated thermal shutdown - reducing component count and failure modes in cost-sensitive, thermally demanding LED driver designs.
Availability
ILD4120E6327XUMA1 is available at Aetrix Electronics and suitable for industrial LED lighting, halogen lamp replacement, and outdoor signal lighting requiring stable component supply and long-term production continuity.
Supply support for ILD4120E6327XUMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949 standards.
The ILD4120 belongs to Infineon's industrial LED controller product line, engineered specifically for robust, integrated constant-current driving of high-power LEDs in harsh ambient conditions - emphasizing thermal resilience, surge immunity, and minimal external component count.
FAQ
What is the recommended inductor value for ILD4120E6327XUMA1 at 12 V input and 1200 mA output?
A 100 µH inductor is specified in the datasheet for 12 V input and 1200 mA output, yielding ~200 kHz switching frequency. Inductor saturation current must exceed 1.5 A, and DC resistance should be ≤150 mΩ to maintain efficiency above 90%. Core material must support operation up to 500 kHz with low core loss.
Can ILD4120E6327XUMA1 drive multiple parallel LED strings?
No - the ILD4120 regulates total output current, not per-string current. Driving parallel strings without individual current balancing risks thermal runaway. It is intended for single-string configurations or series-connected LEDs. For multi-string applications, use separate ILD4120 channels or add external current-matching resistors.
Does the ILD4120E6327XUMA1 support analog dimming below 10% brightness?
Yes - analog dimming via the PWM pin accepts 0.2–3.0 V input, corresponding to ~0–100% brightness. At 0.2 V, output current drops to ~5% of full scale. Below this, regulation degrades due to sense amplifier offset; for sub-5% dimming, PWM dimming with ≥100 Hz frequency is recommended.
How is thermal shutdown triggered and reset on ILD4120E6327XUMA1?
Thermal shutdown activates at ~125 °C junction temperature (typical), disabling switching until junction cools to ~110 °C. No external reset is needed - recovery is automatic and hysteresis prevents oscillation. The exposed pad must be soldered to ≥2 cm² of 2-oz copper for effective heat dissipation to achieve full 1200 mA rating.
ILD4120E6327XUMA1 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 Regulator
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- -
- Current - Output / Channel:
- 1.2A
- Frequency:
- 500kHz
- Dimming:
- Analog, PWM
- Applications:
- Lighting
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8
ILD4120E6327XUMA1 FAQ
1.How can I place an order for ILD4120E6327XUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for ILD4120E6327XUMA1 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 ILD4120E6327XUMA1 reliable?
The price and inventory of ILD4120E6327XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ILD4120E6327XUMA1 is usually 5 days.
3.What payment methods are accepted for ILD4120E6327XUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ILD4120E6327XUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ILD4120E6327XUMA1?
ILD4120E6327XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ILD4120E6327XUMA1 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 ILD4120E6327XUMA1?
For technical support, including ILD4120E6327XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ILD4120E6327XUMA1 requirements.
6.How does Aetrix verify that ILD4120E6327XUMA1 is sourced from the original manufacturer or authorized distributors?
All ILD4120E6327XUMA1 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 ILD4120E6327XUMA1 meets industry standards.
7.What is the process for return or replacement of ILD4120E6327XUMA1?
All ILD4120E6327XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with ILD4120E6327XUMA1, 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 ILD4120E6327XUMA1 part is unused and in its original packaging.
Return procedure for ILD4120E6327XUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ILD4120E6327XUMA1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
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