LT3800EFE#TRPBF

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 on-board 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 start-up 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

Merknader

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