RDK-268 Power Integrations, RDK-268 Datasheet
RDK-268
Specifications of RDK-268
Related parts for RDK-268
RDK-268 Summary of contents
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LNK454/456-458/460 LinkSwitch-PL Family ™ LED Driver IC with TRIAC Dimming, Single-Stage PFC and Constant Current Control for Non-Isolated Applications Product Highlights Dramatically Simplifies Off-line LED Drivers Flicker-free phase-controlled TRIAC dimming • Single stage power factor correction and accurate constant • ...
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LNK454/456-458/460 BYPASS (BP) V FB(SK FB(LO µA FEEDBACK (FB) + Figure 2. Functional Block Diagram. Pin Functional Description DRAIN (D) Pin: High-voltage power MOSFET drain connection. The internal start-up bias current is drawn from ...
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AC IN Figure 4. Typical Application Schematic. Functional Description The LinkSwitch-PL combines a high-voltage power MOSFET switch with a power supply controller in one device. The IC provides a single stage power factor correction plus LED current control. The LinkSwitch-PL ...
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LNK454/456-458/460 V FB ϕ FB( ϕ ) 0° V LINE V TRIAC ϕ 0° Phase Conduction Angle Angle Leading Edge TRIAC Dimmers Figure 6. Feedback Voltage vs. Phase Angle Dimming Characteristics. TRIAC (Phase-Controlled) Dimming The LinkSwitch-PL integrates several ...
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IC Supply and BYPASS Pin The internal 5.85 V regulator charges the bypass capacitor connected to the BYPASS pin to 5. drawing current from the voltage on the DRAIN pin whenever the power MOSFET is off. The BYPASS ...
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LNK454/456-458/460 LinkSwitch-PL Application Example The circuit shown in Figure 7 provides a single constant current output of 350 mA with an LED string voltage The output current can be reduced using a standard AC mains TRIAC dimmer ...
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Bleeder Circuit Resistor R10, R11 and C6 form a bleeder network which ensures the initial input current is high enough meet the TRIAC holding current requirement, especially during small conduction angles. For non-dimming application R10, R11 and C6 may be ...
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LNK454/456-458/460 This can be achieved through selecting the appropriate value of output capacitance and the value of the current sense resistor. If the peak of the ripple voltage exceeds 520 mV, the device will enter cycle skipping mode which will ...
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Reduce the capacitance value to find the minimum acceptable value. Reducing the capacitance value reduces power dissipation and therefore increases efficiency. If the bleeder circuit does not maintain conduction in the TRIAC, then add a damper. The purpose of the ...
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LNK454/456-458/460 Secondary Side Connections The output rectifier and output filter capacitor should be as close as possible. The transformer output return pin should have a short trace to the return side of the output filter capacitor. These currents should not ...
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Absolute Maximum Ratings (1,4) DRAIN Pin Peak Current : LNK454 ............... 400 mA (750 mA) (5) LNK456 ..............850 mA (1450 mA) LNK457 ........... 1350 mA (2000 mA) LNK458 ............1750 mA (2650 mA) LNK460 ............2700 mA (5100 mA) DRAIN Pin Voltage ...
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LNK454/456-458/460 Parameter Symbol Control Function (cont DRAIN Supply Current CH1 BYPASS Pin Charge Current I CH2 BYPASS Pin Voltage V BP BYPASS Pin V Shunt Voltage SHUNT Circuit Protection Current Limit I LIMIT Leading Edge ...
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Parameter Symbol Output ON-State Resistance R DS(ON) OFF-State Leakage I DSS1 Breakdown Voltage BV DSS DRAIN Supply Voltage Auto-Restart OFF-Time t AR(OFF) Auto-Restart Duty Cycle DC AR www.powerint.com Conditions SOURCE = -40 to +125 °C J ...
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LNK454/456-458/460 Typical Performance Characteristics 1000 100 100 200 300 DRAIN Voltage (V) Figure 7. Drain Capacitance vs. Drain Voltage. 1.1 1.0 0.9 -50 - 100 125 150 Junction Temperature (°C) Figure 9. Breakdown ...
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B 4 4.90 (0.193) BSC 3.90 (0.154) BSC 0.10 (0.004 Pin 1 ID 1.27 (0.050) BSC 1.35 (0.053) 1.25 - 1.65 1.75 (0.069) (0.049 - 0.065) 0.10 (0.004) 0.25 (0.010) Reference Solder Pad ...
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LNK454/456-458/460 2 0.400 [10.16] Pin #1 I.D. (Laser Marked) 0.059 [1.50] 0.460 [11.68 0.008 [0.20 2X, 6 Lead Tips 0.023 [0.58] 12× 0.018 [0.46] 0.010 (0.25 TOP VIEW 0.098 ...
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Pin #1 I.D. 0.316 [8.03] (Laser Marked) Ref 0.004 [0.10 0.213 [5.41] 0.350 [8.89 TOP VIEW 0.356 [9.04] Ref. 0.019 [0.48] Ref. H ...
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LNK454/456-458/460 Part Ordering Information LNK 454 Rev. A 11/01/10 • LinkSwitch Product Family • PL Series Number • Package Identifier D SO-8C K eSOP-12 V eDIP-12 • Package Material G GREEN: Halogen Free and RoHS ...
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LNK454/456-458/460 19 Rev. A 11/01/10 ...
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... The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations patents may be found at www.powerint.com. Power Integrations grants its customers a license under certain patent rights as set forth at http://www ...