LT8306

RECOMMENDED FOR NEW DESIGNS

60V Low IQ No-Opto Isolated Flyback Controller

Analog Devices LT8306 Product Info

10 February 2026 5

Features

Wide Input Voltage Range: 4.5V to 60V
Low Quiescent Current
- 120μA in Sleep Mode
- 390μA in Active Mode
Quasi-Resonant Boundary Mode Operation at Heavy Load
Low Ripple Burst Mode^® Operation at Light Load
Minimum Load < 0.5% (Typ) of Full Output
V_OUT Set with a Single External Resistor

8V Gate Drive for External NFET
No Transformer Third Winding or Opto-Isolator Required for Regulation
Accurate EN/UVLO Threshold and Hysteresis
Internal Compensation and Soft-Start
Output Short-Circuit Protection
6-Lead TSOT-23 Package
AEC-Q100 Qualified for Automotive Applications

Part details & applications

The LT8306 is a micropower isolated flyback controller in a 6-lead ThinSOT^™ package. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or opto-isolator for regulation. The output voltage is programmed with a single external resistor. Internal compensation and soft-start further reduce external component count. Boundary mode operation provides a small magnetic solution with excellent load regulation. Low ripple burst mode operation maintains high efficiency at light load while minimizing the output voltage ripple. The LT8306 drives a low side N-channel power MOSFET with 8V gate drive.

The LT8306 has a wide input voltage range of 4.5V to 60V. The high level of integration and the use of boundary and low ripple burst modes result in a simple-to-use, low component count, and high efficiency application solution for isolated power delivery.

APPLICATIONS

Isolated Telecom, Automotive, Industrial, Medical Power Supplies
Isolated Auxiliary/Housekeeping Power Supplies

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