MAX14870
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MAX14870

Compact 4.5V to 36V Full-Bridge DC Motor Drivers

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Industry’s Smallest 4.5V–36V DC Brushed Motor Drivers/Relay Drivers

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $1.98
Features
  • Small Package Handles High Power and Reduces Footprint Circuit Size
    • Up to 2.5A Peak Motor Current
    • Space-Saving TDFN-EP (3mm x 3mm) Package
    • Flexible 4.5V–36V Supply Enables Longer Runtime on Batteries
  • Low Power Consumption Runs Cooler and Longer
    • 280mΩ (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
  • Integrated Protection Provides Robust Driving Solution
    • Short-Circuit-Protected Drivers
    • Thermal-Shutdown Undervoltage Lockout
    • Diagnostic Active-Low FAULT Output
    • -40°C to +85°C Temperature Range
Additional Details
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The MAX14870/MAX14872 motor drivers provide a small, low-power and simple solution for driving and controlling brushed DC motors and relays with voltages between 4.5V and 36V. Very low driver on-resistance reduces power dissipation.

These drivers feature a charge-pump-less design for reduced external components and low supply current. Integrated fast-decay current regulation allows user-adjustable peak startup motor currents and requires minimal external components.

A separate voltage-sense input (SNS) reduces current sensing errors due to parasitic trace resistance.

The MAX14870/MAX14872 features shoot-through protection and internal free-wheeling diodes that absorb inductive motor currents. Driver outputs are short-circuit-protected from shorts to ground, to the supply, and between M1 and M2. An active-low FAULT output signals thermal overload and overcurrents during fault conditions.

The MAX14870 has PWM and direction-control inputs, while the MAX14872 has forward and reverse inputs for direction control. See the Function Tables in the data sheet.

The MAX14870 and MAX14872 are available in a 12-pin (3mm x 3mm) TDFN-EP package and operate over the -40°C to +85°C temperature range.

Applications

  • Printers and Scanners
  • Relay Drivers
  • Vending and Gaming Machines
Part Models 2
1ku List Price Starting From $1.98

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX14870ETC+
  • HTML
  • HTML
MAX14870ETC+T
  • HTML
  • HTML
Software and Part Ecosystem

Software and Part Ecosystem

Evaluation Kit

Evaluation Kits 1

MAX14870EVKIT

Evaluation Kit for MAX14870 and MAX14872

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MAX14870EVKIT

Evaluation Kit for MAX14870 and MAX14872

Evaluation Kit for MAX14870 and MAX14872

Features and Benefits

  • Operates from a Wide 4.5V to 36V Supply
  • Standalone or Software-Controlled Operation
  • Proven PCB Layout
  • Fully Assembled and Tested
  • PMOD Compatible Connector

Product Detail

The MAX14870 evaluation kit (EV kit) is a fully assembled and tested circuit board that evaluates the MAX14870 fullbridge DC motor driver.

The EV kit can also be used to evaluate the MAX14872.

Applications

  • Printers and Scanners
  • Relay Drivers
  • Vending and Gaming Machines
Reference Designs

Reference Designs 1

fig03

Go-IO Industrial IoT Reference Design

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MAXREFDES212

Go-IO Industrial IoT Reference Design

Go-IO Industrial IoT Reference Design

Features and Benefits

  • Universal IO (UAIO), ±12.5V or ±25mA
  • 8 Digital Inputs, IEC 61131-2 compliant Types 1/3
  • 4 Digital Outputs, up to 1A with Safe Demag
  • IO-Link® Master, four ports, version 1.1 compliant
  • TMG IO-Link Master Stack
  • One RS-485 COM port, full duplex to 25Mbps data rate
  • Robust interfaces with integrated protection for ESD and surge

View Detailed Reference Design external link

Design & Integration Tools

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