Micropower isolation flyback controller

The Matt Isolated Flyback controller is a micro power isolated flyback controller with 390μA (active mode) low static current. These controllers drive low-side n-channel power mosFeTs with 8V grid drivers that operate in a wide input voltage range of 4.5V to 60V. These LT8306 flyback controllers are AEC-Q100 certified devices in a 6-pin ThinSOT package.

The LT8306 flyback controller samples the isolated output voltage directly from the primary side flyback waveform without the need to adjust a third winding or optical isolator. High integration and the use of boundary and low ripple burst modes make the controller an easy to use, low component number, and efficient application solution for isolated power supply. Some of these applications include isolated telecommunications, automotive, industrial, medical and household power supplies.

Features

● Wide input voltage range: 4.5V to 60V
● Low static current:
-   120μA in sleep mode
-   It was 390μA in active mode
● No transformer third winding or optical isolator can be adjusted
● Operates in quasi-resonant boundary mode at heavy loads
● Low Ripple Burst Mode® working mode for light load
● Minimum load is full output < 0.5% (typical value)
● Set up VOUT using a single external resistor
● 8V grid driver for external NFets
● Precise EN/UVLO thresholds and hysteresis
● Internal compensation and soft start
● Output short-circuit protection
● 6-pin TSOT-23 package
● Meet the automotive application AEC-Q100 standard

Applications

● Isolated telecommunications, automotive, industrial and medical power sources
● Isolated auxiliary/housekeeping power supply