LT3800IFE#PBF

LT®3800 is a 200KHz fixed frequency high voltage synchronous current mode step-down switching regulator controller. The IC drives standard gate N-channel power MOSFETs and can operate with input voltages from 4V to 60V. An onboard regulator provides IC power directly from VIN and provides for output-derived power to minimize VIN quiescent current. MOSFET drivers employ an internal dynamic bootstrap feature, maximizing gate-source “ON” voltages during normal operation for improved operating efficiencies. It incorporates a programmable soft-start that directly controls the voltage slew rate of the converter output for reduced startup surge currents and overshoot errors. Application includes 12V and 42V automotive and heavy equipment, 48V telecom power supplies, avionics and industrial control systems, distributed power converters.

• Adaptive nonoverlap circuitry prevents switch shoot-through
• Output slew rate controlled soft-start with auto-reset
• Standard gate N-channel power MOSFETs
• Current limit unaffected by duty cycle
• Reverse overcurrent protection
• Operating voltage range from 4 to 60V (TA = 25°C, VIN = 20V)
• Typical enable threshold (rising) is 1.35V (TA = 25°C, VIN = 20V)
• 16-lead plastic TSSOP package
• Temperature rating range from -40°C to 125°C

Notes

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