LTC3805IMSE-5#PBF

LTC®3805-5 is a current mode DC/DC controller designed to drive an N-channel MOSFET in flyback, boost, and SEPIC converter applications. Operating frequency and slope compensation can be programmed by external resistors. Programmable overcurrent sensing protects the converter from overload and short-circuits conditions. Soft-start can be programmed using an external capacitor and the soft-start capacitor also programs an automatic restart feature. Application includes automotive power supplies, telecom power supplies, isolated electronic equipment, auxiliary/housekeeping power supplies, power over Ethernet.

• Adjustable slope compensation
• Adjustable overcurrent protection with automatic restart
• Synchronizable to an external clock
• Programmable soft-start with one external capacitor
• Typical VCC turn-on voltage is 4.5V (VCC rising, TA = 25°C)
• Typical regulated feedback voltage is 0.800V (0°C ≤ TJ ≤ 85°C (E-Grade), TA = 25°C)
• Typical oscillator frequency is 70KHz (RFS = 350K, TA = 25°C)
• 10-lead plastic MSOP package
• Temperature rating range from -40°C to 125°C

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