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LNK623DG Datasheet(PDF) 1 Page - Power Integrations, Inc. |
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LNK623DG Datasheet(HTML) 1 Page - Power Integrations, Inc. |
1 / 18 page LNK623-626 LinkSwitch-CV Family www.powerint.com September 2009 Energy-Efficient, Off-line Switcher with Accurate Primary-side Constant-Voltage (CV) Control ® Output Power Table Product3 230 VAC ±15% 85-265 VAC Adapter1 Peak or Open Frame2 Adapter1 Peak or Open Frame2 LNK623PG/DG 6.5 W 9 W 5.0 W 6 W LNK624PG/DG 7 W 11 W 5.5 W 6.5 W LNK625PG/DG 8 W 13.5 W 6.5 W 8 W LNK626PG/DG 10.5 W 17 W 8.5 W 10 W Table 1. Output Power Table. Based on 5 V Output. Notes: 1. Minimum continuous power in a typical non-ventilated enclosed adapter measured at +50 °C ambient. 2. Maximum practical continuous power in an open frame design with adequate heatsinking, measured at 50 °C ambient (see Key Application Considerations section for more information). 3. Packages: P: DIP-8C, D: SO-8C. Product Highlights Dramatically Simplifies CV Converters • Eliminates optocoupler and all secondary CV control circuitry • Eliminates bias winding supply – IC is self biasing Advanced Performance Features • Compensates for external component temperature variations • Very tight IC parameter tolerances using proprietary trimming technology • Continuous and/or discontinuous mode operation for design flexibility • Frequency jittering greatly reduces EMI filter cost • Even tighter output tolerances achievable with external resistor selection/trimming Advanced Protection/Safety Features • Auto-restart protection reduces delivered power by >95% for output short circuit and all control loop faults (open and shorted components) • Hysteretic thermal shutdown – automatic recovery reduces power supply returns from the field • Meets HV creepage requirements between Drain and all other pins, both on the PCB and at the package EcoSmart® – Energy Efficient • No-load consumption <200 mW at 230 VAC and down to below 70 mW with optional external bias • Easily meets all global energy efficiency regulations with no added components • ON/OFF control provides constant efficiency down to very light loads – ideal for mandatory EISA and ENERGY STAR 2.0 regulations • No primary or secondary current sense resistors – maximizes efficiency Green Package • Halogen free and RoHS compliant package Applications • DVD/STB • Adapters • Standby and auxiliary supplies • Home appliances, white goods and consumer electronics • Industrial controls Description The LinkSwitch-CV dramatically simplifies low power, constant voltage (CV) converter design through a revolutionary control technique which eliminates the need for both an optocoupler and secondary CV control circuitry while providing very tight output voltage regulation. The combination of proprietary IC trimming and E-Shield™ transformer construction techniques enables Clampless™ designs with the LinkSwitch-CV LNK623/4. Figure 1. Typical Application Schematic (a) and Output Characteristic Envelope (b). *Optional with LNK623-624PG/DG. (see Key Application Considerations section for clamp and other external circuit design considerations). LinkSwitch-CV * Wide Range HV DC Input PI-5195-080808 D S FB BP (a) Typical Application Schematic (b) Output Characteristic LinkSwitch-CV provides excellent cross-regulation for multiple- output flyback applications such as DVDs and STBs. A 700 V power MOSFET and ON/OFF control state machine, self-biasing, frequency jittering, cycle-by-cycle current limit, and hysteretic thermal shutdown circuitry are all incorporated onto one IC. I O V O ±5% Auto-Restart PI-5196-080408 |
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