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
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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
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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
Ask a Question
Submit your question below and we will return the best answer from ADI’s knowledge database:
Search
Other places you can find help
Support
Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.
Visit the ADI Support Page
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MAX14870
Documentation
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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
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| MAX14870ETC+T |
Thin Dual Flatpack No Leads
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- MAX14870ETC+
- Pin/Package Drawing
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Thin Dual Flatpack No Leads
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- MAX14870ETC+T
- Pin/Package Drawing
-
Thin Dual Flatpack No Leads
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
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Part Models
Product Lifecycle
PCN
Apr 27, 2024
- 2400
ASSEMBLY
MAX14870ETC+
PRODUCTION
MAX14870ETC+T
PRODUCTION
Apr 23, 2024
- 2419N
ASSEMBLY
MAX14870ETC+
PRODUCTION
MAX14870ETC+T
PRODUCTION
Filter by Model
Part Models
Product Lifecycle
PCN
Apr 27, 2024
- 2400
ASSEMBLY
Apr 23, 2024
- 2419N
ASSEMBLY
Software & Part Ecosystem
Evaluation Kits 1
MAX14870EVKIT
Evaluation Kit for MAX14870 and MAX14872
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
Resources
Evaluation Kits1
Tools & Simulations 1
Software Development 1
Reference Designs 1
MAXREFDES212
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
