M3 Technology (M3Tek) MT3908 | Demoboard MT3908 Demo

Description

The MT3908 is a fully integrated high efficiency synchronous step-down converter which requires minimum number of external components. It offers very compact solution 8A continuous output current over a wide input range. The MT3908 employs proprietary Constant On-Time (COT) control scheme providing superior transient response and maintainingconstant switching frequency in the continuous conduction mode operation. The external ramp compensation network allows stable operation with ultra-low equivalent series resistance (ESR) output ceramic capacitors. An error amplifier in the control loop provides excellent line and load regulation.The MT3908 integrates extensive protection functions including Input 2.7V under-voltage lockout (UVLO), thermal shutdown, input over-voltage protection (OVP), cycle by cycle current limiting, and short-circuit protection. An open drain power good signal indicates the output within its regulation voltage range. The converter is available in a small 16 pin 3mmx3mm QFN package.

Features

• Input Voltage Range from 3V to 28V
• 1% Feedback Voltage Accuracy
• 8A 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
• Constant 700kHz Switching Frequency
• Integrate 20mΩ/10mΩ HS/LS Power Switches
• Accurate 1.26V EN threshold with 275mV Hysteresis
• MT3908A_FPWM or MT3908N_PSM mode operation
• 130μA Low Quiescent Current
• Internal fixed or External programmable Soft-start Time
• Thermal Shutdown
• Hiccup Mode Short Circuit Protection
• Small 3mmx3mm 16 lead QFN package

Typical applications

• Laptop Computer, Flat Panel Television and Monitors
• Distributed Power Systems
• USB Type-C/PD Docking Station
• Networking Systems

More information

• IC product information