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Renesas IW3989-00
- Part No.:
- IW3989-00
- Manufacturer:
- Renesas
- Category:
- LED Drivers
- Package:
- 12-VQFN Exposed Pad
- Datasheet:
-
IW3989-00.pdf
- Description:
- IC LED DRIVER OFFL PWM 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,532
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Product details
Overview
The iW3989-00 from Renesas Electronics is a digital AC direct power controller IC for phase-cut dimmable LED luminaires, integrating a high-voltage MOSFET driver, LED current sink, and VCC charging circuit in a 12-lead QFN package. It delivers >0.7 power factor, supports 45–66 Hz AC line frequency, achieves <0.5 s start-up time, and enables flicker-free dimming with leading-edge, trailing-edge, and smart dimmers up to 10W output.
For engineers reviewing the iW3989-00 datasheet, iW3989-00 pinout, iW3989-00 application, or iW3989-00 equivalent, key selection criteria include dimmer compatibility across R-type, R-C-type, and digital smart dimmers; tight LED current regulation under varying AC line and forward voltage conditions; integrated VCC charging to eliminate external components; thermal derating and shutdown protection; and EZ-EMI®-enabled simplified EMI design.
Technical Context
The iW3989-00 implements cycle-by-cycle waveform analysis for real-time dimmer type detection and dynamic impedance adjustment, enabling stable operation with diverse phase-cut dimmers. Its digital control architecture continuously monitors VIN, VD, VS, and ISET to regulate LED current without inductive components.
It operates as a non-isolated off-line 120VAC controller with internal high-voltage drain (D pins) rated to 500 V, gate drive (VG) up to 30 V, and supports both internal and external MOSFET configurations via VS and VD sensing. Thermal shutdown activates at 150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power Range | Up to 10W - validated thermal limit for reliable operation without forced cooling. |
| Power Factor | >0.7 - meets basic energy efficiency requirements for residential LED retrofit lamps. |
| AC Line Frequency | 45–66 Hz - supports global mains frequencies including North America (60 Hz) and Europe (50 Hz). |
| Start-up Time | <0.5 s (no dimmer) - ensures immediate light response after power-on, critical for user experience. |
| Junction Temperature Limit | 150°C - defines absolute maximum operating temperature before thermal shutdown engages. |
| ESD Rating (HBM) | ±2000 V - provides robust handling tolerance during PCB assembly and system integration. |
| LED Current Regulation | Tight closed-loop control - maintains consistent brightness despite AC line variation and LED VF drift. |
Pinout & Package
Package: 12-lead QFN (4 mm × 4 mm, 0.5 mm pitch), thermally enhanced with exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4 (D) | Internal HV MOSFET Drain | High-voltage switching node connected directly to rectified AC line; rated to 500 V. |
| 5 (VG) | Internal HV MOSFET Gate | Drives internal power switch; accepts 0–30 V logic-compatible gate signal. |
| 6 (VIN) | Rectified AC Sense | Monitors full-wave rectified line voltage for zero-crossing and dimmer phase detection. |
| 7 (VD) | External MOSFET Drain Sense | Enables external MOSFET configuration by sensing drain voltage of external switch. |
| 8 (ISET) | LED Current Setting | Analog input that sets regulated LED current via external resistor; determines luminous output level. |
| 9 (VDD) | Control Logic Supply | Provides regulated 5 V supply for digital core; derived internally from VCC or VIN. |
| 10 (VS) | External MOSFET Source Sense | Current-sense reference for external MOSFET configuration; enables accurate LED current regulation. |
| 11 (VCC) | Gate Bias Supply | Charged internally; powers VG driver and eliminates need for external VCC capacitor. |
| 12 (GND) | System Ground | Common return path for analog sensing, logic, and power circuits; tied to exposed thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Digital dimmer detection | Identifies leading-edge (R/R-L), trailing-edge (R-C), and digital smart dimmers in real time using waveform analysis. |
| EZ-EMI® integration | Reduces external EMI filter component count and board area by simplifying compliance with EN55015/CISPR15. |
| No external VCC charging | Integrated VCC charge pump eliminates external capacitor and diode, lowering BOM cost and layout complexity. |
| Flicker-free operation | Proprietary immunity to AC line distortion prevents visible LED flicker in noisy grid environments. |
| Comprehensive protection suite | Includes LED open/short, ISET resistor fault, over-temperature derating, and thermal shutdown - no external fault monitoring needed. |
Applications
| Residential LED Retrofit Lamps | Commercial Dimmable Downlights |
|---|---|
Use Scenario: Replacing incandescent A19 bulbs in wall-switch-controlled fixtures with TRIAC dimmers. IC Role / Device Role / Timing Role: AC-direct LED current controller providing phase-cut dimming interface and closed-loop current regulation. Use Value: Enables true incandescent-like dimming behavior-no audible noise, no flicker, smooth low-end dimming down to 5%. | Use Scenario: Integrated ceiling-mounted downlights in office spaces with trailing-edge (ELV) dimmers. IC Role / Device Role / Timing Role: Digital power controller managing LED string current while adapting to ELV dimmer waveform characteristics. Use Value: Delivers >0.7 PF and stable light output across 45–66 Hz line frequencies without inductor-induced buzz. |
| Smart Home LED Modules | Hospitality Lighting Systems |
Use Scenario: LED modules interfacing with digital smart dimmers (e.g., Lutron Caséta, Philips Hue) in IoT-enabled residences. IC Role / Device Role / Timing Role: Real-time waveform analyzer and dynamic impedance adapter for digital dimmer protocols. Use Value: Eliminates compatibility testing overhead by auto-detecting and adapting to proprietary smart dimmer signaling. | Use Scenario: Hotel room lighting with multi-level wall dimmers requiring wide dimming range and thermal reliability. IC Role / Device Role / Timing Role: Non-isolated AC-direct controller delivering tight current regulation and thermal derating below 120°C junction. Use Value: Supports continuous 10W operation in enclosed fixtures with no fan or heatsink, reducing system cost and failure points. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AC-direct LED controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCL30488 | Fixed 60 Hz operation only; no 50 Hz support; requires external VCC capacitor. | Limited to North American 60 Hz markets; higher BOM count due to external VCC components. | Choose when 60 Hz-only operation is acceptable and legacy design reuse is prioritized. |
| Infineon ICE2QRSD20 | Quasi-resonant flyback controller; requires transformer isolation and inductor; not AC-direct. | Supports higher power (>15W) but adds cost, size, and audible noise with TRIAC dimmers. | Choose when isolation, higher output power, or legacy flyback topology is required. |
Compared with NCL30488 and ICE2QRSD20, the iW3989-00 uniquely combines 45–66 Hz universal line frequency support, integrated VCC charging, and true AC-direct architecture-enabling compact, silent, flicker-free 10W LED drivers without magnetics or external bias networks.
Availability
iW3989-00 is available at Aetrix Electronics and suitable for residential LED retrofit lamps, commercial dimmable downlights, and smart home LED modules requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for iW3989-00 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 leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT applications.
The iW3989-00 belongs to Renesas' digital AC-direct LED controller product line, designed specifically to replace magnetic and isolated switch-mode drivers in cost-sensitive, space-constrained, dimmable LED lighting systems.
FAQ
What is the maximum recommended output power for the iW3989-00?
The iW3989-00 is specified for up to 10W output power. Designs exceeding 10W require thermal validation per Note 1 in the datasheet: IC junction temperature must remain below 120°C for reliable operation. The iW3989-00's thermal derating and shutdown features protect against overheating, but sustained operation above 10W risks premature failure without additional heatsinking or airflow.
Does the iW3989-00 support both 50 Hz and 60 Hz AC line frequencies?
Yes, the iW3989-00 supports a wide AC line frequency range of 45–66 Hz, covering both 50 Hz (Europe, Asia) and 60 Hz (North America) mains standards. This universal frequency support is implemented via digital sampling and adaptive timing algorithms, ensuring consistent dimmer detection and LED current regulation regardless of regional grid frequency.
How does the iW3989-00 eliminate audible noise with TRIAC dimmers?
The iW3989-00 eliminates audible noise by removing inductive components-specifically the choke or transformer-required in traditional switch-mode LED drivers. As an AC-direct controller, it regulates LED current using only semiconductor switches and passive RC networks, avoiding magnetostrictive vibration in inductors that causes buzzing with TRIAC dimmers. The iW3989-00 thus delivers silent, incandescent-like dimming performance.
Is an external VCC capacitor required for the iW3989-00?
No, the iW3989-00 integrates a VCC charge pump circuit that self-generates and regulates its gate bias supply. Pin 11 (VCC) is internally charged from VIN or the D pins, eliminating the need for an external VCC capacitor and associated diode. This reduces BOM count, PCB area, and cost-confirmed in the "No external VCC charging needed" feature list and Figure 3.1 typical application circuit.
What protection features are built into the iW3989-00?
The iW3989-00 includes LED open-circuit and short-circuit protection, ISET resistor open/short detection, over-temperature derating, and thermal shutdown. These functions operate autonomously without external circuitry: for example, ISET fault detection disables output if the current-setting resistor fails, and thermal shutdown triggers at 150°C junction temperature. All protections are documented in Section 2 Features and Absolute Maximum Ratings of the iW3989-00 datasheet.
IW3989-00 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 12-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- -
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- -
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- PWM, Triac
- Applications:
- General Purpose
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-QFN (4x4)
IW3989-00 FAQ
1.How can I place an order for IW3989-00 through Aetrix?
Please submit a Request for Quotation (RFQ) for IW3989-00 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 IW3989-00 reliable?
The price and inventory of IW3989-00 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IW3989-00 is usually 5 days.
3.What payment methods are accepted for IW3989-00?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IW3989-00 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IW3989-00?
IW3989-00 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IW3989-00 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 IW3989-00?
For technical support, including IW3989-00 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IW3989-00 requirements.
6.How does Aetrix verify that IW3989-00 is sourced from the original manufacturer or authorized distributors?
All IW3989-00 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 IW3989-00 meets industry standards.
7.What is the process for return or replacement of IW3989-00?
All IW3989-00 units undergo pre-shipment inspection (PSI). If there is an issue with IW3989-00, 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 IW3989-00 part is unused and in its original packaging.
Return procedure for IW3989-00:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IW3989-00 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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