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Maxim产品 - MAX14871介绍

MAX14871 - 4.5V to 36V Full-Bridge DC Motor Driver

MAX14871是Maxim美信半导体公司的一款直流电机驱动产品，MAX14871是4.5V to 36V Full-Bridge DC Motor Driver，本站介绍了MAX14871的封装应用图解、特点和优点、功能等，并给出了与MAX14871相关的Maxim元器件型号供参考。

MAX14871 - 4.5V to 36V Full-Bridge DC Motor Driver - 直流电机驱动 - Industry’s Simplest and Most Flexible 4.5 to 36V DC-Brushed Motor Driver - 美信半导体

产品概述

The MAX14871 DC motor driver provides a low-power and simple solution for driving and controlling brushed motors with voltages between 4.5V and 36V. Very lowdriver on resistance reduces power during dissipation.

The MAX14871 features a charge-pump-less design forreduced external components and low supply current.Integrated current regulation allows user-defined peak startupmotor currents and requires minimal external components.

The MAX14871 includes 3 modes of current regulation:fast decay, slow decay, and 25% current ripple modes.Current regulation based on 25% ripple simplifies thedesign and enables regulation independent of motorcharacteristics. A separate voltage sense input (SNS) reducescurrent-sensing errors due to parasitic trace resistance.

The MAX14871 features shoot-through protection andinternal free-wheeling diodes that absorb inductive motorcurrents. Driver outputs are short-circuit-protected fromshorts to ground, to the supply, and between M1 and M2.An active-low FAULT output signals thermal overload andovercurrents during fault conditions.

The MAX14871 is available in a 16-pin TSSOP-EP packageand operates over the -40°C to +85°C temperature range.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Drive More Power and Reduce Footprint
  • Up to 2.8A Peak Motor-Current Package
  • Flexible 4.5V36V Supply Enables Longer Runtime
  • Low Power Consumption Runs Cooler and Longer
  • 334mΩ (typ) Total Bridge On-Resistance
  • 1mA (typ) Supply Current at 30kHz/24V
  • 10µA (max) Standby Current at 12V
  • Simplified Designs Reduces Time to Market
  • Charge-Pump-Less Architecture
  • Current Regulation Only Requires a Sense Resistor
  • Current-Sense Input Simplifies PCB Layout
  • Internal/External VREF for Current Regulation
  • Fast/Slow/25% Ripple Current Regulation Modes
  • Integrated Protection Provides Robust Driving Solutions
  • Short-Circuit-Protected Drivers
  • Thermal Shutdown Undervoltage Lockout
  • Diagnostic Active-Low FAULT Output
  • -40°C to +85°C Temperature Range
    • 热门应用
  • 工业自动化
  • 打印机与扫描仪
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