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Renesas IW3658-20F
- Part No.:
- IW3658-20F
- Manufacturer:
- Renesas
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Datasheet:
-
IW3658-20F.pdf
- Description:
- SINGLE-STAGE SSL LED DRIVER CONT
- Quantity:
- Payment:
- Shipping:
Inventory:1,764
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Product details
Overview
The IW3658-20F from Renesas Electronics is a single-stage, phase-cut dimmable SSL LED driver IC with integrated 500V/3A high-voltage MOSFET in SO-7 package, supporting up to 15W output power at 120VAC input, operating in buck-boost topology with primary-side constant current regulation and built-in thermal derating for retrofit lamp applications.
For engineers reviewing the IW3658-20F datasheet, IW3658-20F pinout, IW3658-20F application, or IW3658-20F equivalent, key selection criteria include dimmer compatibility (leading- and trailing-edge), VCC stability across dimmer phase angles, integrated HV MOSFET voltage rating (500V), thermal shutdown threshold (150°C), and SO-7 package pin spacing for HV isolation.
Technical Context
The IW3658-20F implements PrimAccurate™ primary-side sensing to eliminate optocoupler-based feedback, enabling closed-loop constant current regulation without secondary-side components. It operates in boundary conduction mode (BCM) and uses resonant control to achieve >85% typical efficiency while maintaining low EMI.
Its proprietary VCC regulation circuit sustains stable internal supply across varying LED string voltages and dimmer phase angles, preventing low-end flicker. The device supports both R-type/R-L-type leading-edge and R-C-type trailing-edge dimmers, with built-in OVP configuration via CFG pin and over-temperature shutdown at 150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Power | Up to 15W at 120VAC input; thermal derating required above 12W |
| Integrated MOSFET | 500V/3A HV MOSFET with enhanced drain-to-low-voltage pin spacing in SO-7 |
| Dimmer Compatibility | Supports leading-edge (R/R-L) and trailing-edge (R-C) wall dimmers |
| Regulation Method | Primary-side constant current regulation via PrimAccurate™ sensing; no optocoupler needed |
| Topology | Buck-boost operation enables wide LED string voltage range and single-winding inductor use |
| Thermal Protection | Built-in over-temperature shutdown at 150°C junction temperature; current derating above 120°C |
| Start-up Time | < 0.5s without dimmer; internal HV start-up eliminates external high-voltage circuit |
Pinout & Package
Package: 7-lead SO (SO-7) with extended creepage between HV drain and low-voltage pins for reinforced isolation in AC-connected LED drivers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 ISENSE | Current sense input | Connects to current-sense resistor to enable primary-side constant current regulation |
| 2 GND | Ground reference | Common return path for control logic, gate drive, and sense circuitry |
| 4 HV | High-voltage MOSFET drain | Direct connection to rectified AC line; rated for 500V DC blocking |
| 5 VG | MOSFET gate driver output | Drives integrated HV MOSFET; max gate voltage ±18V |
| 6 VCC | Control logic supply | Internal regulated supply (–0.3 to 6.0V); stabilized across dimmer phase angles |
| 7 COMP | Loop compensation node | External RC network sets bandwidth and stability of current regulation loop |
| 8 CFG | OVP configuration input | Analog input to set overvoltage protection threshold; determines LED open-circuit response |
Key Features
| Feature | Design Value |
|---|---|
| Integrated HV MOSFET | 500V/3A device co-packaged in SO-7 with isolated drain pin spacing reduces layout complexity and BOM count |
| PrimAccurate™ sensing | Enables accurate ±3% LED current regulation without optocoupler or secondary-side feedback components |
| VCC regulation | Maintains stable 5V internal supply across full dimmer phase angle range (0–100%), eliminating low-end flicker |
| Buck-boost topology | Supports wide LED string voltage (e.g., 12–48V) using single-winding inductor; simplifies magnetics design |
| Thermal derating | Automatically reduces LED current above 120°C junction temperature to extend lifetime and ensure reliability |
Applications
| A-style Dimmable LED Bulb | BR30 Retrofit Lamp |
|---|---|
Use Scenario: Replacement for incandescent A19 bulbs in residential ceiling fixtures with standard wall dimmers. IC Role / Device Role / Timing Role: Single-stage AC/DC LED driver providing constant current regulation and phase-cut dimming interface. Use Value: Enables compact all-glass bulb form factor with E26 socket fit, 15W output, and flicker-free dimming down to 5%. | Use Scenario: Directional lighting in track or recessed housings requiring smooth dimming and thermal robustness. IC Role / Device Role / Timing Role: Buck-boost LED controller managing variable LED string voltage under dimmer modulation. Use Value: Delivers >85% efficiency and built-in thermal derating to sustain performance in enclosed fixtures up to 120°C ambient. |
| PAR30 High-Power Lamp | GU10 Spotlight Module |
Use Scenario: Commercial spotlighting where high lumen output and consistent dimming behavior are critical. IC Role / Device Role / Timing Role: Integrated HV MOSFET driver regulating current in high-power LED strings with OVP and short-circuit protection. Use Value: Supports 15W output with 500V MOSFET rating and fast start-up (<0.5s), meeting commercial lamp safety and responsiveness requirements. | Use Scenario: Low-profile, mains-powered GU10 base modules used in retail display lighting. IC Role / Device Role / Timing Role: Compact SO-7 packaged driver enabling minimal PCB area and direct AC input integration. Use Value: Leverages single-winding inductor and internal HV start-up to reduce component count and meet stringent size constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP4027GQ-Z | Integrated 650V/2A MOSFET; supports 230VAC input natively; no CFG pin for OVP tuning | Better suited for 230VAC high-power-factor designs; lacks configurable OVP | Select MP4027GQ-Z when designing for European mains and prioritizing PF >0.9 over OVP flexibility |
| NCP1075P | Standalone PWM controller (no integrated MOSFET); requires external 650V FET; no primary-side sensing | Requires optocoupler feedback and additional HV components; higher BOM cost and board space | Choose NCP1075P only if legacy design reuse or discrete FET selection is mandatory |
Compared with MP4027GQ-Z and NCP1075P, the IW3658-20F uniquely combines 500V/3A integration, configurable OVP, and flicker-free VCC regulation - making it optimal for cost-sensitive, compact 120VAC retrofit lamps requiring dimmer interoperability and thermal resilience.
Availability
IW3658-20F is available at Aetrix Electronics and suitable for dimmable LED retrofit lamps, A/BR/PAR/GU-form factor luminaires, and E26/E27 socket-compatible lighting systems requiring stable component supply and RoHS-compliant packaging.
Supply support for IW3658-20F 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 IW3658-20F belongs to Renesas' SSL LED driver product line, designed specifically for cost-optimized, single-stage, dimmable AC/DC LED lighting in retrofit lamp applications with integrated HV switching and primary-side regulation.
FAQ
What is the maximum output power supported by the IW3658-20F?
The IW3658-20F supports up to 15W output power at 120VAC input. For designs exceeding 12W, thermal validation is required to ensure junction temperature remains below 120°C for reliable operation. The device includes built-in current derating above this threshold to maintain long-term reliability in enclosed lamp housings.
Does the IW3658-20F require an optocoupler for feedback?
No, the IW3658-20F does not require an optocoupler. It uses Dialog's patented PrimAccurate™ primary-side sensing technology to regulate LED current accurately without secondary-side feedback components. This eliminates optocoupler-related aging, cost, and board space, enabling simpler, more reliable designs.
What dimmer types are compatible with the IW3658-20F?
The IW3658-20F is compatible with both leading-edge (R-type and R-L-type) and trailing-edge (R-C-type) wall dimmers. Its advanced dimming control algorithm ensures smooth, flicker-free dimming down to 5% light output across diverse residential and commercial dimmer models.
What is the purpose of the CFG pin on the IW3658-20F?
Pin 8 (CFG) on the IW3658-20F configures the overvoltage protection (OVP) threshold. By applying a specific voltage or resistor divider to this pin, designers can set the LED open-circuit detection level, enabling tailored response to fault conditions without external comparators or logic.
Is the IW3658-20F pin-compatible with other iW3658 variants?
Yes, the IW3658-20F shares identical SO-7 pinout and electrical interface with all iW3658 family members, including -00F, -21F, and -30F. Differences lie in internal MOSFET ratings (500V/3A vs. 650V/2A), optimization (high PF vs. filament load), and input voltage support (120VAC vs. 230VAC), but pin assignment and function remain unchanged.
IW3658-20F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width), 7 Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- AC DC Offline Switcher
- Topology:
- Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- -
- Voltage - Supply (Max):
- 6V
- Voltage - Output:
- -
- Current - Output / Channel:
- 3A
- Frequency:
- -
- Dimming:
- Yes
- Applications:
- General Purpose
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 7-SOIC
IW3658-20F FAQ
1.How can I place an order for IW3658-20F through Aetrix?
Please submit a Request for Quotation (RFQ) for IW3658-20F 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 IW3658-20F reliable?
The price and inventory of IW3658-20F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IW3658-20F is usually 5 days.
3.What payment methods are accepted for IW3658-20F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IW3658-20F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IW3658-20F?
IW3658-20F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IW3658-20F 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 IW3658-20F?
For technical support, including IW3658-20F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IW3658-20F requirements.
6.How does Aetrix verify that IW3658-20F is sourced from the original manufacturer or authorized distributors?
All IW3658-20F 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 IW3658-20F meets industry standards.
7.What is the process for return or replacement of IW3658-20F?
All IW3658-20F units undergo pre-shipment inspection (PSI). If there is an issue with IW3658-20F, 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 IW3658-20F part is unused and in its original packaging.
Return procedure for IW3658-20F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IW3658-20F Tags
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BCR402RE6327HTSA1
Infineon Technologies
-
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
-
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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