LT8316EFE#PBF

LT8316 is a micropower, high voltage flyback controller. No opto-isolator is needed for regulation. The device samples the output voltage from the isolated flyback waveform appearing across a third winding on the transformer. Quasi-resonant boundary mode operation improves load regulation, reduces transformer size, and maintains high efficiency. At start-up, this device charges its INTVCC capacitor via a high voltage current source. During normal operation, the current source turns off and the device draws its power from a third winding on the transformer minimizing standby power dissipation. It operates from a wide range of input supply voltages and can deliver upto 100W of power. It is widely used in application such as isolated telecom, automotive, industrial, medical power supplies, isolated off-line housekeeping power supplies, electric vehicles and battery stacks, multi output isolated power supplies for inverter gate drives etc.

• Wide input voltage range is 16V to 560V (600V max)
• Constant-current and constant-voltage regulation
• Low-ripple light load Burst Mode® operation
• Low quiescent current is 75μA typical
• Programmable current limit and soft-start
• VIN shutdown current is 12μA typical at (VEN/UVLO <lt/> 0.3V, BIAS = floating)
• Maximum switching frequency is 140KHz typical
• FB regulation voltage is 1.22V typical
• Operating junction temperature is -40°C to 125°C
• Package style is 20-lead plastic TSSOP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party