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Renesas IW380-02
- Part No.:
- IW380-02
- Manufacturer:
- Renesas
- Category:
- LED Drivers
- Package:
- 10-SOP (0.154", 3.90mm Width)
- Datasheet:
-
IW380-02.pdf
- Description:
- HIGH-PERFORMANCE STEP-DOWN DC/DC
- Quantity:
- Payment:
- Shipping:
Inventory:1,218
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Product details
Overview
The iW380-02 from Renesas Electronics is a high-performance step-down DC/DC controller designed for LED lighting applications requiring precise constant-current regulation and ultra-fine dimming control. It supports up to 78V input, delivers true DC dimming from 0.0625% to 100% with 0.0625% resolution, operates in CC-only mode, and disables over-temperature current de-rating per its variant specification.
For engineers reviewing the iW380-02 datasheet, iW380-02 pinout, iW380-02 application, or iW380-02 equivalent, this controller is selected for high-reliability, low-flicker LED drivers where dimming linearity, startup threshold control (0.125%), and thermal behavior customization are critical design requirements.
Technical Context
The iW380-02 implements digital control architecture optimized for high-side buck topology, enabling up to 98% VOUT/VIN ratio and supporting output power up to 150W. Its dual-dimming architecture processes DIM1 and DIM2 inputs multiplicatively (DIM1% × DIM2%) to achieve precise current scaling.
It features configurable startup voltage and light-off mode with <1mA quiescent current, while maintaining real-time dimming signal monitoring. Protection functions include OVP, OSP, OCP, OTP, and sense-resistor short detection - all implemented without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 22V to 78V DC - supports wide-range industrial and commercial LED driver inputs including 48V and 72V systems. |
| Dimming Range & Resolution | 0.0625% to 100% with 0.0625% resolution - enables flicker-free dimming down to near-zero light output in architectural and medical lighting. |
| Operating Mode | Constant-Current (CC) only - fixed-mode variant eliminating CV/CC or CP/CC configuration overhead. |
| OTP De-rating | Disabled - eliminates automatic current reduction at elevated temperature, preserving full output under sustained thermal stress. |
| Startup Threshold | 0.125% lowest dimming startup - ensures reliable turn-on at ultra-low dimming levels without false triggering. |
| Light-off Current | <1mA - minimizes standby power in off-state while retaining fast wake-up capability on dimming signal rise. |
Pinout & Package
The iW380-02 is housed in a 10-lead SOIC package with exposed pad for thermal performance. Pin assignments are validated per Renesas Product Summary Rev. 1.0 (2024).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power Input & Sensing | Accepts 22–78V DC input; also used for input voltage monitoring and protection thresholds. |
| VCC | IC Power Supply | Internal LDO input; requires local 4.7µF bypass capacitor for stable operation. |
| DIM1 / DIM2 | Dual Dimming Inputs | Support simultaneous analog voltage, PWM, or resistor-based dimming; internally multiplied for final current setpoint. |
| GND | Ground Reference | Analog and power ground common point; must be low-impedance connection to minimize noise coupling. |
| ISNS | Current Sense Input | Connects to low-side sense resistor; enables accurate LED current regulation with ±3% line/load regulation. |
| LX | Switching Node | Drives external high-side MOSFET source; connects to buck inductor and bootstrap circuit. |
| HSG | High-Side Gate Driver | Provides 12V gate drive to external N-channel MOSFET; rated for 87V max relative to LX. |
| BOOT | Bootstrap Supply | Charges external 0.1µF bootstrap capacitor; enables high-side MOSFET drive above VIN. |
| CFG | Configuration Input | Analog pin setting startup voltage threshold and dimming hysteresis via external resistor divider. |
Key Features
| Feature | Design Value |
|---|---|
| True DC Dimming Architecture | Digitally controlled current regulation achieving 0.0625% dimming resolution with guaranteed linearity across full range. |
| Dual-Dimming Multiplicative Logic | DIM1% × DIM2% computation enables multi-level dimming schemes without microcontroller intervention. |
| Configurable Startup Voltage | Adjustable via CFG pin to prevent flicker during power-up or brown-out conditions in varying AC/DC front-end designs. |
| Light-off Mode | Sub-1mA quiescent state with active dimming signal monitoring - enables instant wake-up and eliminates delay in responsive lighting systems. |
| Integrated Protection Suite | OVP, OSP, OCP, OTP, VVIN UV/OV, and sense-resistor short detection - reduces BOM count and improves system robustness. |
Applications
| Architectural LED Downlights | Industrial Task Lighting |
|---|---|
Use Scenario: High-CRI, flicker-free dimming in office and retail ceiling fixtures with DALI or 0–10V control interfaces. IC Role / Device Role / Timing Role: Primary CC controller managing LED string current in two-stage AC/DC driver architecture. Use Value: 0.125% startup threshold and disabled OTP de-rating ensure consistent lumen output across ambient temperature swings and dimming transitions. | Use Scenario: Ruggedized LED luminaires in factory environments with variable input voltage and EMI-prone wiring. IC Role / Device Role / Timing Role: Buck controller regulating constant current for high-power LED arrays in DC/DC LED lighting drivers. Use Value: 78V input rating and integrated OVP/OSP protections enable reliable operation without additional protection ICs in unregulated DC bus systems. |
| Medical Examination Lights | Smart Home LED Strips |
Use Scenario: Precision dimming in surgical and diagnostic lighting requiring zero perceptible flicker and repeatable intensity calibration. IC Role / Device Role / Timing Role: Core current regulator implementing True DC Dimming in isolated LED driver stage. Use Value: 0.0625% dimming resolution and multiplicative dual-input logic support calibrated multi-step dimming profiles traceable to clinical standards. | Use Scenario: RGBW LED strip controllers with independent white channel dimming using analog or PWM signals. IC Role / Device Role / Timing Role: Secondary-stage CC controller after AC/DC adapter, accepting 0–10V or PWM from MCU or smart hub. Use Value: Auto-detectable 3-in-1 dimming on both DIM1 and DIM2 simplifies integration with diverse home automation protocols without firmware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3409HV | Supports up to 75V input; analog-only dimming; no multiplicative dual-dimming or programmable startup threshold. | Lacks True DC Dimming resolution below 1%; no light-off mode or configurable hysteresis. | Preferred when cost sensitivity outweighs ultra-fine dimming needs and thermal de-rating is acceptable. |
| MPQ4425AGL | 40V max input; integrated MOSFET; fixed 500kHz switching frequency; no OTP de-rating disable option. | Not suitable for >40V systems; limited dimming flexibility and no 0.125% startup threshold tuning. | Applicable only in low-voltage DC/DC LED drivers where board space constraints justify integrated FET trade-offs. |
Compared with LM3409HV and MPQ4425AGL, the iW380-02 uniquely combines 78V operation, 0.0625% dimming resolution, 0.125% startup threshold, and OTP de-rating disable - making it the only option for high-input-voltage, ultra-precise, thermally stable LED current control.
Availability
iW380-02 is available at Aetrix Electronics and suitable for architectural LED downlights, industrial task lighting, and medical examination lights requiring stable component supply, long-term lifecycle support, and consistent dimming performance across production batches.
Supply support for iW380-02 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
Renesas Electronics is a global semiconductor manufacturer specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and IoT applications.
The iW380 product line is engineered specifically for high-performance, digitally controlled LED lighting drivers - emphasizing precision dimming, thermal resilience, and simplified system integration in AC/DC and DC/DC topologies.
FAQ
What is the key functional difference between iW380-02 and iW380-01?
The iW380-02 disables over-temperature current de-rating, whereas iW380-01 retains standard OTP de-rating behavior. Both share the 0.125% lowest dimming startup threshold and CC-only operating mode. This makes iW380-02 preferable in thermally constrained but stable environments where full current must be maintained regardless of junction temperature rise.
Does iW380-02 support PWM dimming on both DIM1 and DIM2 pins?
Yes, iW380-02 supports PWM dimming on both DIM1 and DIM2 pins, along with analog voltage and resistor-based dimming. Its auto-detection logic identifies signal type per pin, and internal multiplication (DIM1% × DIM2%) applies the combined dimming factor to LED current regulation.
What package type and footprint does iW380-02 use?
iW380-02 uses a 10-lead SOIC package with exposed thermal pad, matching industry-standard SOIC-10 footprints. The pinout is identical across all iW380 variants, including iW380-02, enabling drop-in compatibility within the family for layout reuse.
Can iW380-02 be used in CV/CC or CP/CC configurations?
No, iW380-02 is strictly a CC-only variant. CV/CC functionality is exclusive to iW380-20 and iW380-20B, while CP/CC modes are implemented in iW380-31B and iW380-32B. The iW380-02 datasheet and ordering information confirm its fixed CC-only operation.
What is the absolute maximum input voltage rating for iW380-02?
The absolute maximum input voltage rating for iW380-02 is 82V DC on the VIN pin, as specified in the Absolute Maximum Ratings table. Continuous operation is rated up to 78V, providing 4V headroom for transient suppression and layout margin.
IW380-02 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-SOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Step-Down (Buck)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 22V
- Voltage - Supply (Max):
- 65V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- Analog, PWM
- Applications:
- LED Lighting
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-SOIC
IW380-02 FAQ
1.How can I place an order for IW380-02 through Aetrix?
Please submit a Request for Quotation (RFQ) for IW380-02 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 IW380-02 reliable?
The price and inventory of IW380-02 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IW380-02 is usually 5 days.
3.What payment methods are accepted for IW380-02?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IW380-02 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IW380-02?
IW380-02 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IW380-02 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 IW380-02?
For technical support, including IW380-02 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IW380-02 requirements.
6.How does Aetrix verify that IW380-02 is sourced from the original manufacturer or authorized distributors?
All IW380-02 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 IW380-02 meets industry standards.
7.What is the process for return or replacement of IW380-02?
All IW380-02 units undergo pre-shipment inspection (PSI). If there is an issue with IW380-02, 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 IW380-02 part is unused and in its original packaging.
Return procedure for IW380-02:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IW380-02 Tags
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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
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
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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