MAX14870
PRODUCTIONCompact 4.5V to 36V Full-Bridge DC Motor Drivers
Industry’s Smallest 4.5V–36V DC Brushed Motor Drivers/Relay Drivers
- Part Models
- 2
- 1ku List Price
- Starting From $1.98
Part Details
- 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
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
Documentation
Data Sheet 1
User Guide 1
3rd Party Solutions 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX14870ETC+ | Thin Dual Flatpack No Leads | ||
| MAX14870ETC+T | Thin Dual Flatpack No Leads |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareTools & Simulations
Software Development 1
Evaluation Kits
Evaluation Kit for MAX14870 and MAX14872
Resources
Reference Designs
Pocket IO PLC Development Platform
Part Used
Design & Integration Tools
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