LTC’s LT8302IS8EPBF is a monolithic micropower isolated flyback converter that operates from an input voltage range of 2.8 V to 42 V and delivers up to 18 W of isolated output power. 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 two external resistors and a third optional temperature compensation resistor. 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 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. The converter comes in an 8-SOIC-EP packages with temperature range up to -55°C to +150°C. The LT8302IS8EPBF is perfect for isolated power supplies found in automotive, industrial, and medical applications.
Feature
- 3V to 42V Input Voltage Range
- 3.6A, 65V Internal DMOS Power Switch
- Low Quiescent Current:
- 106µA in Sleep Mode
- 380µA 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
- No Transformer Third Winding or Opto-Isolator Required for Output Voltage Regulation
- Accurate EN/UVLO Threshold and Hysteresis
- Internal Compensation and Soft-Start
- Temperature Compensation for Output Diode
- Output Short-Circuit Protection
- Thermally Enhanced 8-Lead SO Package
- AEC-Q100 Qualified for Automotive Applications
Applications
- Isolated Automotive, Industrial, Medical Power Supplies
- Isolated Auxiliary/Housekeeping Power Supplies
