M3 Technology (M3Tek) MT3956 | Demoboard MT3956 Demo

Description

The MT3956 is a fully integrated high efficiency synchronous step-down converter which requires minimum number of external components. It offers very compact solution 6A continuous output current over a wide input range. The MT3956 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 MT3956 integrates extensive protection functions including Input 2.85V 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 18V
• 1% Feedback Voltage Accuracy
• 6A 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 1.5MHz Switching Frequency
• Integrate 14mΩ/8mΩ HS/LS Power Switches
• Accurate 1.26V EN threshold with 260mV Hysteresis
• MT3956A_FPWM/MT3956N_PFM/MT3956U_UA mode operation
• 200μA Low Quiescent Current for MT3956U_UA mode 150μA Low Quiescent Current for MT3956N_PFM mode
• Internal fixed or External programmable Soft-start Time
• Thermal Shutdown
• Hiccup Mode Short Circuit Protection
• Small 3mmx3mm 16 lead QFN package

Typical applications

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

More information

• IC product information