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FLS3217 − Single-Stage PFC Primary-Side-Regulation Offline LED Driver with Integrated Power MOSFET
This highly integrated PWM controller with power MOSFET, FLS3217, provides several features to enhance the performance of low-power flyback converters. The proprietary topology enables simplified circuit design for LED lighting applications.
By using the single-stage topology with primary-side regulation, an LED lighting board can be implemented with the few external components and minimized cost; requiring no input bulk capacitor or feedback circuitry. To implement good power factor and low THD, constant on-time control is utilized with an external capacitor connected to COMI.
Precise constant-current control regulates accurate output current versus changes in input voltage and output voltage. The operating frequency is proportionally changed by the output voltage to guarantee DCM operation with higher efficiency and simple design.
FLS3217 provides protection features such as open-LED, short-LED, and over-temperature protection. The current-limit level is automatically reduced to minimize the output current and protect external components in short-LED condition.
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Product Status/Pricing/Packaging
| Product | Product & Eco Status | *Pricing | Packaging & Packing Info | **Package Marking Convention | Qualification Support | Compliance Certificates |
|---|---|---|---|---|---|---|
| FLS3217N |
Full Production Green as of Sep 2011 |
$1.27 | MDIP 7L Details RAIL |
Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2:S3217
Line 3:NC |
ESD (HBM) :
5000
V RTHETA (JA) : 150 °C/W RƟJC : 40 °C/W Show more... |
|
| FLS3217M |
Full Production Green as of Oct 2011 |
$0.92 | SO 7L NB Details TAPE REEL |
Line 1:$Y (Fairchild logo) &Z (Plant Code) &2 (2-Digit Date Code) &K
Line 2:S3217
Line 3:MD |
ESD (HBM) :
5000
V RTHETA (JA) : 150 °C/W RƟJC : 40 °C/W Show more... |
- Fairchild 1,000 piece Budgetary Pricing. *
- If there is no sample button displayed at the top of the page, please contact one of the Fairchild distributors or your local sales office to obtain samples.
- Top mark packaging information for product FLS3217 is available. **
Features
- Cost-Effective Solution without Input Bulk Capacitor and Feedback Circuitry
- Power-Factor Correction (PFC)
- Integrated Power MOSFET
- Accurate Constant-Current (CC) Control Independent Online Voltage, Output Voltage, and Magnetizing Inductance Variation
- Linear Frequency Control for Increased Efficiency
- Open / Short-LED Protection
- Cycle-by-Cycle Current Limiting
- Over-Temperature Protection with Auto Restart
- Low Startup Current: 20μA
- Low Operating Current: 5mA
- VDD Over-Voltage Protection (OVP)
- VDD Under-Voltage Lockout (UVLO)
- Application Voltage Range: 80VAC ~ 308VAC
- Retrofit E17/E26/E27 and PAR Lamps
- Replacement of Incandescent, CFL, and Linear Lamps
Applications
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Application Notes
| Application Note | Description |
|---|---|
| AN-FEBL041 | User Guide for FEBFLS3217N_L41U007AEvaluation Board Universal Input 6.5W LED Driver (PFC PSR Flyback)(3,868 K) 12-Oct-2012 |
| AN-FEBL040 | User Guide for FEBFLS3217M_L40U004A Evaluation Board Universal Input 3.5W LED Driver (PFC Buck-Boost)(2,586 K) 04-Oct-2012 |
Reference Designs
| Application | Document Number | Featured Products | Output Power |
Input Voltage |
Topology |
|---|---|---|---|---|---|
| LED Lighting | RD-L041 | FLS3217 | 6.5W | 90-265VAC | PFC PSR Flyback with Integrated MOSFET |
| LED Lighting | RD-L040 | FLS3217 | 3.5W | 90-265VAC | PFC Buck-Boost with Integrated MOSFET |
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