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Renesas IW3627-00D
- Part No.:
- IW3627-00D
- Manufacturer:
- Renesas
- Category:
- LED Drivers
- Package:
- SOT-23-6
- Datasheet:
-
IW3627-00D.pdf
- Description:
- OFF-LINE DIGITAL CONSTANT-VOLTAG
- Quantity:
- Payment:
- Shipping:
Inventory:1,349
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Product details
Overview
The IW3627-00D from Renesas Electronics is a digital constant-voltage offline PWM controller with integrated power factor correction, designed for primary-side regulation in AC/DC flyback, buck-boost, and buck topologies. It delivers ±3% line/load regulation, supports up to 90W output, operates from 90–277VAC input, and achieves <200mW no-load standby power. Used in smart LED lighting and universal AC/DC power supplies.
For engineers reviewing the IW3627-00D datasheet, IW3627-00D pinout, IW3627-00D application, or IW3627-00D equivalent, key selection criteria include its SOT-23 package size, user-configurable 90/120kHz max switching frequency, adaptive output voltage limiting (<10% transient overshoot), internal loop compensation, and active start-up scheme enabling fast startup without efficiency penalty.
Technical Context
The IW3627-00D implements constant-on-time (COT) control with pulse-frequency-modulation (PFM) at light load to eliminate audible noise while maintaining >0.9 power factor across wide load ranges. Its digital architecture enables primary-side regulation without secondary feedback, using FB/FMAX for output voltage sensing and overload protection enablement.
It integrates adaptive output voltage limit adjustment per load transient, multi-function pins for frequency configuration (CS/FMIN sets FMIN = 600Hz/1kHz; FB/FMAX sets FMAX = 90/120kHz), and built-in protections including OVP, OLP, UVP, OTP, and short-circuit detection - all without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology Support | Flyback, buck-boost, buck - isolated or non-isolated configurations |
| Input Voltage Range | 90–277VAC universal input; also supports DC input |
| Output Regulation Accuracy | ±3% line and load regulation without secondary feedback circuit |
| Max Output Power | Up to 90W with external MOSFET in SOT-23 package |
| Standby Power | <200mW at no-load via PFM light-load mode |
| Power Factor | >0.9 across full load range using single-stage PFC |
| Transient Response | <10% overshoot/undershoot under any load step via adaptive voltage limiting |
Pinout & Package
Package: 6-lead SOT-23, surface-mount, thermally enhanced for high-power density in compact AC/DC designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Power Input | Supplies control logic and gate driver; rated -0.3 to 18.0V, max 20mA |
| FB/FMAX (Pin 2) | Analog Input / Multi-function | Configures max switching frequency (90/120kHz); senses output voltage for regulation; enables OLP at startup |
| VIN (Pin 3) | Analog Input / Multi-function | Senses AC line voltage for UVP; controls active start-up device for fastest startup |
| CS/FMIN (Pin 4) | Analog Input / Multi-function | Configures min switching frequency (600Hz/1kHz); provides primary current sense for cycle-by-cycle peak current limit |
| GND (Pin 5) | Ground Reference | System ground return for analog and power sections |
| OUTPUT (Pin 6) | Gate Driver Output | Drives external N-channel MOSFET switch; rated -0.3 to 18.0V |
Key Features
| Feature | Design Value |
|---|---|
| Primary-side regulation | Eliminates optocoupler and TL431, reducing BOM cost and board space in CV power supplies |
| User-configurable switching frequencies | Independent FMAX (90/120kHz) and FMIN (600Hz/1kHz) selection via resistor dividers on FB/FMAX and CS/FMIN |
| Adaptive transient response | Proprietary algorithm dynamically adjusts output voltage limits to hold transients within ±10% of nominal VOUT |
| Integrated protection suite | Single-point fault coverage: OVP, OLP, UVP, OTP, and output short - no external ICs required |
| Active start-up scheme | Reduces startup time by >50% vs. passive RC start-up while preserving efficiency |
Applications
| Smart LED Lighting | Universal AC/DC Adapters |
|---|---|
Use Scenario: Dimmable LED drivers for residential and commercial luminaires with wireless MCU integration. IC Role / Device Role / Timing Role: Primary-side CV controller providing stable 12V/24V rail to MCU and LED driver ICs; handles 90–277VAC input directly. Use Value: Enables compact, low-cost, flicker-free lighting with <200mW standby power and adaptive transient suppression for smooth dimming transitions. | Use Scenario: Compact wall-plug adapters powering IoT sensors, USB-C PD accessories, and industrial controllers. IC Role / Device Role / Timing Role: Offline CV PWM controller implementing single-stage PFC + regulation in flyback topology; replaces dual-controller solutions. Use Value: Achieves >0.9 PF and ±3% regulation across line/load without secondary feedback - reducing component count and improving reliability. |
| LED Ballast Replacement | Front-End Pre-regulator |
Use Scenario: Retrofit LED tubes replacing magnetic/electronic ballasts in T8/T5 fixtures operating from 120/277VAC mains. IC Role / Device Role / Timing Role: Constant-voltage controller driving downstream CC LED drivers; supports high-voltage input and wide output capacitance tolerance (1–20% ripple). Use Value: Eliminates need for auxiliary winding or optocoupler, simplifying compliance with safety standards and enabling direct replacement of legacy ballasts. | Use Scenario: Intermediate regulated bus (e.g., 12V or 24V) feeding multiple downstream DC-DC converters in industrial PLCs or medical equipment. IC Role / Device Role / Timing Role: High-efficiency pre-regulator delivering tightly regulated CV output to diverse loads including CC, CR, and DC-DC converter inputs. Use Value: Internal loop compensation ensures stability across mixed load types - removing need for custom compensation networks per load condition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-voltage offline PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28056DR | Fixed 65kHz switching frequency; requires external loop compensation; no adaptive transient limiting | Limited to fixed-frequency designs; less robust under dynamic load steps | Choose when design prioritizes simplicity over transient performance and uses standard compensation networks |
| ICE2QS03G | Analog-based quasi-resonant controller; no digital PFC; lower integration (no active start-up or multi-function pins) | Better suited for cost-sensitive, low-power (<30W) applications without universal input requirement | Prefer for legacy quasi-resonant flyback designs where digital features are unnecessary |
Compared with UCC28056DR and ICE2QS03G, the IW3627-00D offers unique digital adaptability - including user-selectable FMAX/FMIN, active start-up, and real-time output voltage limit adjustment - enabling higher power density, tighter regulation, and broader load compatibility in compact SOT-23 form factor.
Availability
IW3627-00D is available at Aetrix Electronics and suitable for smart LED lighting, universal AC/DC adapters, and front-end pre-regulator applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for IW3627-00D 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 markets.
The IW3627-00D belongs to Renesas' iWatt digital AC/DC controller product line, engineered specifically for high-efficiency, low-component-count constant-voltage offline power conversion with integrated PFC and primary-side regulation.
FAQ
What is the maximum output power supported by the IW3627-00D?
The IW3627-00D supports up to 90W output power when paired with an appropriately rated external MOSFET in flyback or buck-boost topologies. Its enhanced gate driver and thermal design in the SOT-23 package enable this high power density. Actual achievable power depends on layout, transformer design, and heatsinking - but the IW3627-00D's specifications confirm operation at 90W under typical conditions with proper design implementation.
Does the IW3627-00D require an optocoupler for feedback?
No, the IW3627-00D does not require an optocoupler. It implements primary-side regulation using the FB/FMAX pin to sense reflected output voltage through the transformer auxiliary winding. This eliminates the need for secondary-side feedback components like optocouplers and TL431, reducing cost, board space, and failure points while maintaining ±3% regulation accuracy.
How does the IW3627-00D achieve <200mW no-load standby power?
The IW3627-00D achieves <200mW no-load standby power by entering pulse-frequency-modulation (PFM) mode at light loads, reducing switching frequency down to 600Hz (configurable via CS/FMIN). Combined with low quiescent current design and efficient gate drive, this minimizes energy loss during idle periods - meeting stringent global energy efficiency standards such as DOE Level VI and EU CoC Tier 2 without auxiliary circuits.
What protection features are integrated into the IW3627-00D?
The IW3627-00D integrates comprehensive single-point fault protection: output over-voltage (OVP), output over-load (OLP), output short-circuit, input under-voltage (UVP), and over-temperature (OTP). These functions operate autonomously without external components. For example, OLP activation is configurable via FB/FMAX at startup, and OTP triggers latch-off to prevent thermal runaway - enhancing system reliability in unattended applications.
Can the IW3627-00D be used in buck topology with DC input?
Yes, the IW3627-00D supports buck topology with DC input, as confirmed in its Product Summary Figures 3.2 and 3.3. It regulates output voltage using primary-side sensing and constant-on-time control, making it suitable for DC-fed buck converters in industrial or telecom power systems. The VIN pin monitors input voltage for UVP, and the CS/FMIN pin provides current sensing - enabling full functionality without AC-specific circuitry.
IW3627-00D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SOT-23-6
- 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):
- 18V
- Voltage - Output:
- -
- Current - Output / Channel:
- -
- Frequency:
- 90kHz, 120kHz
- Dimming:
- -
- Applications:
- LED Lighting
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
IW3627-00D FAQ
1.How can I place an order for IW3627-00D through Aetrix?
Please submit a Request for Quotation (RFQ) for IW3627-00D 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 IW3627-00D reliable?
The price and inventory of IW3627-00D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IW3627-00D is usually 5 days.
3.What payment methods are accepted for IW3627-00D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IW3627-00D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IW3627-00D?
IW3627-00D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IW3627-00D 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 IW3627-00D?
For technical support, including IW3627-00D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IW3627-00D requirements.
6.How does Aetrix verify that IW3627-00D is sourced from the original manufacturer or authorized distributors?
All IW3627-00D 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 IW3627-00D meets industry standards.
7.What is the process for return or replacement of IW3627-00D?
All IW3627-00D units undergo pre-shipment inspection (PSI). If there is an issue with IW3627-00D, 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 IW3627-00D part is unused and in its original packaging.
Return procedure for IW3627-00D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
IW3627-00D 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
-
BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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