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Renesas IW3689-01
- Part No.:
- IW3689-01
- Manufacturer:
- Renesas
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
IW3689-01.pdf
- Description:
- IC LED DRIVER OFFL PWM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,665
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Product details
Overview
The iW3689-01 from Renesas Electronics is a digital AC/DC power controller IC designed for single-stage, high-power-factor, dimmable LED drivers operating from 230VAC input. It delivers quasi-resonant flyback or buck-boost control, achieves >85% efficiency without dimmer, maintains ±5% LED current regulation via PrimAccurate™ primary-side sensing, and supports 1–100% dimming range across leading-edge, trailing-edge, and smart dimmers.
For engineers reviewing the iW3689-01 datasheet, iW3689-01 pinout, iW3689-01 application, or iW3689-01 equivalent, key selection considerations include its 230VAC-optimized startup behavior, integrated VCC charging and current sink, SOIC-8 package with no auxiliary winding requirement, and compliance with IEC61000-3-2 harmonic limits and RoHS/Halide-free standards.
Technical Context
The iW3689-01 implements cycle-by-cycle waveform analysis to detect dimmer type (R-type, R-L, R-C, or digital) and dynamically adjust input impedance-enabling stable operation without external dimmer identification circuitry. Its digital control loop eliminates need for analog compensation components while maintaining stability across line voltages (45–66 Hz), temperature (−40°C to +150°C), and load variations.
PrimAccurate™ primary-side sensing enables accurate LED current regulation without optocoupler or secondary feedback, and EZ-EMI® technology reduces EMI filter complexity. The IC integrates switching MOSFET gate drive, VCC charging, and current sink functions into a single SOIC-8 package, supporting both isolated and non-isolated topologies up to 25W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage | Optimized for 230VAC line; supports 45–66Hz frequency range. |
| Output Power | Up to 25W LED load; thermal derating required above 12W. |
| Power Factor | >0.92 with THD <20%; meets IEC61000-3-2 Class C limits. |
| Dimming Range | 1% to 100% linear dimming; compatible with leading/trailing-edge and smart dimmers. |
| LED Current Accuracy | ±5% regulation over line, load, and temperature without secondary feedback. |
| Startup Time | <0.5s in no-dimmer mode; fast transient response to dimmer changes. |
| Efficiency | Typical >85% at full load without dimmer; quasi-resonant operation minimizes switching loss. |
Pinout & Package
Package: 8-Lead SOIC-8 (JEDEC MS12F compliant), RoHS and Halide-free, moisture sensitivity level 1, rated for 150°C max junction temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Rectified AC line voltage input | Monitors bulk DC bus; used for line voltage feedforward and protection. |
| CFG | Configuration and OTP threshold input | Sets dimmer mode and overtemperature trip point at startup via resistor divider. |
| VCC | Internal power supply rail | Supplies control logic; charged internally from drain node-no auxiliary winding needed. |
| GND | Signal and power ground reference | Common return path for all analog and digital circuits; requires low-impedance PCB layout. |
| ISENSE | Primary-side current sense input | Connects to current-sense resistor; enables cycle-by-cycle peak current limiting and regulation. |
| VS | MOSFET source voltage monitor | Used for valley-switching detection in quasi-resonant mode and overcurrent protection. |
| VD | MOSFET drain voltage monitor | Enables ZVS detection and provides VCC charging path; withstands up to 24V. |
| VCB | Post-EMI filter capacitor voltage | Supports EZ-EMI® operation; improves line transient immunity and harmonic shaping. |
Key Features
| Feature | Design Value |
|---|---|
| Digital dimmer detection | Identifies leading-edge, trailing-edge, and smart dimmers autonomously-no external ID resistors or firmware configuration required. |
| PrimAccurate™ sensing | Enables ±5% LED current regulation without optocoupler or secondary-side feedback, reducing BOM count and cost. |
| EZ-EMI® integration | Simplifies EMI filter design by leveraging VCB input and internal waveform shaping-reduces common-mode choke size and count. |
| No auxiliary winding needed | VCC is self-charged from VD pin; eliminates custom transformer auxiliary winding and associated component cost and layout complexity. |
| Digital loop stability | Eliminates external compensation network; control loop remains stable across temperature, line, and load without tuning. |
Applications
| Retrofit LED Lamps | Commercial LED Luminaires |
|---|---|
Use Scenario: Replacement of incandescent/halogen bulbs in residential wall dimmer circuits. IC Role / Device Role / Timing Role: AC/DC digital controller managing quasi-resonant flyback conversion and real-time dimmer impedance matching. Use Value: Enables 1–100% smooth dimming with legacy TRIAC dimmers while achieving >0.92 PF and <20% THD-meeting ENERGY STAR requirements. | Use Scenario: Ceiling-mounted or recessed LED fixtures in offices and retail spaces with centralized dimming control. IC Role / Device Role / Timing Role: Single-stage PFC + LED driver controller delivering regulated current without secondary feedback. Use Value: Reduces bill-of-materials by eliminating optocoupler, TL431, and compensation network-lowering system cost and improving long-term reliability. |
| Smart Home Lighting Systems | Industrial LED Task Lighting |
Use Scenario: Integration with Zigbee/Z-Wave enabled dimmers and voice-controlled lighting platforms. IC Role / Device Role / Timing Role: Digital controller interpreting digital dimmer signals and adapting LED current in real time. Use Value: Supports digital smart dimmer compatibility without additional protocol translation ICs-simplifying system architecture and certification. | Use Scenario: High-reliability LED task lights in manufacturing or laboratory environments with wide AC line variation. IC Role / Device Role / Timing Role: Primary-side regulated controller with over-temperature foldback and open/short LED protection. Use Value: Maintains ±5% LED current accuracy across −40°C to +85°C ambient and 230VAC ±15%, ensuring consistent light output and longevity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AC/DC digital LED driver controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NCL30486 | Analog-based controller with external compensation; requires optocoupler for isolation; no built-in smart dimmer support. | Limited to leading/trailing-edge dimmers only; lacks cycle-by-cycle waveform analysis for digital dimmer detection. | Choose for cost-sensitive designs where digital dimmer compatibility is not required and analog loop tuning is acceptable. |
| Infineon ICE2QRSD | Quasi-resonant PWM controller with integrated 650V MOSFET; no native dimmer detection; relies on external circuitry for dimming interface. | Requires additional components (e.g., dimmer ID IC, optocoupler, compensation network) to achieve comparable dimming performance. | Prefer when higher integration of power switch is prioritized over dimmer intelligence and primary-side regulation simplicity. |
Compared with NCL30486 and ICE2QRSD, the iW3689-01 delivers fully autonomous dimmer recognition, eliminates optocoupler and compensation components, and achieves tighter LED current regulation-reducing design effort, BOM count, and qualification risk for 230VAC dimmable LED drivers.
Availability
iW3689-01 is available at Aetrix Electronics and suitable for dimmable LED retrofit lamps, commercial luminaires, smart home lighting systems, and industrial task lighting requiring stable component supply and full 230VAC compatibility.
Supply support for iW3689-01 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 connectivity solutions for automotive, industrial, and IoT applications.
The iW3689-01 belongs to Renesas' digital LED driver controller product line, engineered specifically for high-efficiency, single-stage, dimmable AC/DC LED drivers targeting global 230VAC markets with stringent power quality and compatibility requirements.
FAQ
What is the primary function of the iW3689-01 in an LED driver design?
The iW3689-01 serves as a digital AC/DC power controller that manages quasi-resonant flyback or buck-boost conversion, performs autonomous dimmer detection, regulates LED current with ±5% accuracy using PrimAccurate™ primary-side sensing, and ensures compliance with IEC61000-3-2 harmonic standards-all within a single SOIC-8 IC. Its role eliminates the need for optocouplers, TL431s, and external compensation networks in iW3689-01-based designs.
Does the iW3689-01 require an auxiliary winding on the transformer?
No, the iW3689-01 does not require an auxiliary winding. It uses internal VCC charging from the VD (drain) pin to power its control circuitry, enabling simplified transformer design and reduced component count. This feature is confirmed in the iW3689-01 Product Summary Rev. 1.2 and applies specifically to the iW3689-01 variant optimized for 230VAC input.
How does the iW3689-01 handle different dimmer types?
The iW3689-01 employs cycle-by-cycle waveform analysis to automatically identify leading-edge (R-type/R-L), trailing-edge (R-C), and digital smart dimmers-then dynamically adjusts its input impedance to maintain stable dimming without flicker or drop-out. This capability is intrinsic to the iW3689-01's digital control architecture and is validated across all supported dimmer categories per the official Renesas documentation.
What protection features are integrated into the iW3689-01?
The iW3689-01 integrates LED open-circuit and short-circuit protection, current-sense resistor open/short detection, over-current protection, over-temperature LED current foldback and shutdown, and robust ESD (±2kV) and latch-up (±100mA) tolerance. These protections operate autonomously without external components and are active across the full −40°C to +150°C junction temperature range of the iW3689-01.
Is the iW3689-01 RoHS and Halide-free compliant?
Yes, the iW3689-01 is RoHS compliant and Halide-free, as explicitly stated in the Renesas Product Summary Rev. 1.2. It meets Directive 2011/65/EU requirements, and its packaging adheres to JEDEC MS12F standards with moisture sensitivity level 1-ensuring compatibility with standard lead-free reflow processes without special handling.
IW3689-01 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Flyback, Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- -
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- General Purpose
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
IW3689-01 FAQ
1.How can I place an order for IW3689-01 through Aetrix?
Please submit a Request for Quotation (RFQ) for IW3689-01 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 IW3689-01 reliable?
The price and inventory of IW3689-01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IW3689-01 is usually 5 days.
3.What payment methods are accepted for IW3689-01?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IW3689-01 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IW3689-01?
IW3689-01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IW3689-01 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 IW3689-01?
For technical support, including IW3689-01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IW3689-01 requirements.
6.How does Aetrix verify that IW3689-01 is sourced from the original manufacturer or authorized distributors?
All IW3689-01 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 IW3689-01 meets industry standards.
7.What is the process for return or replacement of IW3689-01?
All IW3689-01 units undergo pre-shipment inspection (PSI). If there is an issue with IW3689-01, 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 IW3689-01 part is unused and in its original packaging.
Return procedure for IW3689-01:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IW3689-01 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
-
LYT1604D-TL
Power Integrations
-
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
-
BCR421UFD-7
Diodes Incorporated
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