LT8306RS6#TRMPBF

LT®8306 is a micropower-isolated flyback controller. By sampling the isolated output voltage directly from the primary-side flyback waveform, the part requires no third winding or optoisolator 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. It drives a low-side N-channel power MOSFET with 8V gate drive. It has a wide input voltage. Application includes isolated telecom, automotive, industrial, medical power supplies, isolated auxiliary/housekeeping power supplies.

• Quasi-resonant boundary mode operation at heavy load
• VOUT set with a single external resistor
• Accurate EN/UVLO threshold and hysteresis, internal compensation and soft-start
• Output short-circuit protection
• Vin operating voltage range from 4.5 to 60V (TA = 25°C, VIN = 12V, EN/UVLO = VIN)
• Typical quiescent current is 120µA (in sleep mode (gate off), TA = 25°C)
• Minimum switching frequency range from 7.5 to 12.5KHz (TA = 25°C, VIN = 12V, EN/UVLO = VIN, typ)
• Typical SENSE maximum current threshold is 95mV (TA = 25°C, VIN = 12V, EN/UVLO = VIN)
• Typical GATE fall time is 30ns (CL = 3.3nF, 90% to 10%, TA = 25°C, VIN = 12V)
• 6-lead plastic TSOT-23 package, temperature range from -40°C to 150°C

บันทึก

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