Description: LNK626PG AC DC Converter IC

LNK626PG AC DC Converter IC LNK626PG Power IC For Welding Machine Power Supply LNK626PG Off Line Switching IC With Precision Constant Voltage CV Control On Primary Side LNK626 IC

LNK626PG  Link Switch-CV Off-line Switcher AC-DC Converter IC DIP-7 Package It’s also used in electric welding machine power supply 24v-15v SMPS

The LNK623-626 is an offline switcher IC designed to simplify the switched mode power supply design by eliminating the need for an optocoupler and secondary CV control circuitry. It features a very accurate primary-side Constant-Voltage (CV) control. With its innovative control technique, it ensures precise output voltage regulation while reducing component count and cost. Featuring a 725 V power MOSFET, ON/OFF control, self-biasing, and advanced protection features such as cycle-by-cycle current limit and thermal shutdown, it offers reliable performance. Additionally, it boasts eco-friendly features such as low no-load consumption and compliance with global energy efficiency regulations. Ideal for various applications, including DVDs and set-top boxes, this IC provides efficient power management solutions. The LNK626 is available in both PDIP-8C and SO-8C packages.

The LNK626PG is available in different packages. You can identify them using the package marking. You can find the LNK626PG with the following markings, LNK626PG and LNK626DG. The first letter after LNK626 indicates the package type and the second letter indicates ROHS compliant. For example, the PDIP or through-hole version of the IC LNK626 will have the package markings LNK626PG, while the LNK626 SMD variant will have markings like LNK626DG.

Specifications:

• Input voltage range: 85 to 265 VAC
• Output voltage range: 3.3 to 24 V
• Output current: up to 1.5 A
• Efficiency: up to 80%
• No-load power consumption: less than 150 mW

Features:

• Eliminates optocoupler and all secondary CV control circuitry
• Eliminates bias winding supply – IC is self-biasing
• 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
• Auto-restart protection reduces delivered power by >95% for output short-circuits 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 the Drain and all other pins, both on the PCB and the package
• 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
• Accurate primary-side constant-voltage (CV) control: This eliminates the need for an optocoupler and all secondary CV control circuitry.
• Self-biasing: The IC is self-biasing, eliminating the need for a bias winding supply.

LNK626PG Alternatives:

• Viper22A, LNK306PN, AP3983, VIPER12A, AP8012, TNY280
• Note: Complete technical details can be found in the LNK626PG datasheet at this page’s end

Applications of LNK626:

• DVD/STB
• Adapters
• Standby and auxiliary supplies
• Home appliances, white goods and consumer electronics
• Industrial controls

• Input voltage range: 85 to 265 VAC
• Output voltage range: 3.3 to 24 V
• Output current: up to 1.5 A
• Efficiency: up to 80%
• No-load power consumption: less than 150 mW