IC manufacturers M3 Technology (M3Tek)

IC manufacturers (98)

M3 Technology (M3Tek) MT3908 | Demoboard MT3908 Demo

28V 8A 700kHz Fast-PWM Synchronous Step-Down Converter Rev.

Overview

TopologyBuck Converter
Input voltage3-28 V
IC revision0.11

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
  • USB Type-C/PD Docking Station
  • Networking Systems
  • Distributed Power Systems

More information

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
Material Samples
744323056SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 0.56 30.9 15 33 2.17 106 Superflux
744323100SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 1 19.4 10 21 4.79 69 Superflux
744323120SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 1.2 17.4 6.5 15 6.6 59 Superflux
Order Code Data­sheet Simu­lation
744323056SPEC
744323100SPEC
744323120SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
Material Samples