LNK623PG Energy-Effi cient Off-line Switcher with Accurate Primary-side Constant-Voltage (CV) Control digital integrate

Dramatically Simplifi es 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 fl exibility

• Frequency jittering greatly reduces EMI fi lter 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 fi eld

• Meets HV creepage requirements between Drain and all other pins, both on the PCB and at the package

• DVD/STB • Adapters

• Standby and auxiliary supplies

• Home appliances, white goods and consumer electronics

• Industrial controls

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.
Absolute Maximum Ratings
DRAIN Voltage .................................. .......................-0.3 V to 700 V
DRAIN Peak Current: LNK623 ......................... 400 (600) mA(4)
LNK624 ......................... 400 (600) mA(4)
LNK625 ..........................528 (790) mA(4)
LNK626 ........................720 (1080) mA(4)
Peak Negative Pulsed DRAIN Current ................... ...... -100 mA(2)
Feedback Voltage ................................................. .......-0.3 V to 9 V
Feedback Current ................................................. .............. 100 mA
BYPASS Pin Voltage ..................................... .............-0.3 V to 9 V
Storage Temperature ...................................... ..... -65 °C to 150 °C
Operating Junction Temperature.........................-40 °C to 150 °C
Lead Temperature(3) .................................................................260 °C

Typical Performance Characteristics​