Description

The MT3683 is a fully integrated high efficiency synchronous step-down converter which requires minimum number of external components.It offers very compact solution with up to 3A continuous output current over a wide input range.

The MT3683 employs proprietary Constant OnTime(COT)control scheme providing superiortransient response and maintaining constant switching frequency under the continuous conduction mode operation.The internal ramp compensation network allows stable operation with ultra-low equivalent series resistance(ESR)output ceramic capacitors without using external compensation network.An error amplifier in the control loop provides excellent line and load regulation.

The MT3683 integrates extensive protection functions include:UVLO,OCP,UVP and thermal shutdown.The converter is available in a small 6pin SOT23 package.

Features

⚫Input Voltage Range from 4.0V to 24V

⚫28V Input Transient Tolerance

⚫Output Voltage Adjustable from 0.6V to 24V

⚫3A continuous output current

⚫Support 100%duty cycle Low Dropout Operation

⚫Stable operation with output low ESR ceramic capacitors

⚫Fast PWM COT control with superior transient performance

⚫650kHz Switching frequency

⚫Internal 800us Soft-start

⚫Integrated 85mΩ/60mΩHS/LS Power Switches

⚫Accurate EN UVLO threshold

⚫High Efficiency Operation at light load MT3683N

⚫Thermal Shutdown with Auto recovery.

⚫Hiccup mode at short circuit protection

⚫Available in a 6-pin SOT23 Package