LTC3862EFE-1#PBF

LTC®3862-1 is a two phase constant frequency, current mode boost and SEPIC controller that drives N-channel power MOSFETs. Two phase operation reduces system filtering capacitance and inductance requirements. The operating frequency can be set with an external resistor over a 75KHz to 500KHz range and can be synchronized to an external clock using the internal PLL. Other features include an internal 10V LDO with undervoltage lockout protection for the gate drivers, a precision RUN pin threshold with programmable hysteresis, soft-start and programmable leading edge blanking and maximum duty cycle. Typical applications are automotive, telecom and industrial power supplies.

• 2-phase operation reduces input and output capacitance
• Fixed frequency, peak current mode control
• 10V gate drive for high voltage MOSFETs
• Adjustable slope compensation gain, adjustable max duty cycle (up to 96%)
• Adjustable leading edge blanking, ±1% internal voltage reference
• Programmable operating frequency with one external resistor
• Internal 10V LDO regulator, phase-lockable fixed frequency 50KHz to 650KHz
• VIN supply voltage range from 8.5 to 36V (TA=25°C. VIN=12V, RUN=2V and SS=open)
• 24-lead plastic TSSOP package
• Temperature rating range from –40°C to 85°C

附註

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