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Analog Devices Inc./Maxim Integrated MAX14874ETC+
- Part No.:
- MAX14874ETC+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Motor Drivers, Controllers
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
MAX14874ETC+.pdf
- Description:
- IC MOTOR DRIVER 4.5V-36V 12TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,387
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Product details
Overview
The MAX14874ETC+ from Maxim Integrated is a dual push-pull H-bridge driver IC designed for controlling relays, solenoid valves, and brushed DC motors in industrial and appliance systems. It operates from 4.5V to 36V, delivers up to 2.5A peak output current per channel, features integrated shoot-through protection with 140ns dead time, and includes active-low FAULT signaling for overcurrent and thermal events - deployed in coffee machines and automated valve control.
For engineers reviewing the MAX14874ETC+ datasheet, MAX14874ETC+ pinout, MAX14874ETC+ application, or MAX14874ETC+ equivalent, key selection criteria include its 480mΩ typical bridge on-resistance, independent EN/IN control per driver, COM-pin-based current sensing up to 1V, charge-pump-less architecture, and TDFN-EP (3mm × 3mm) package compatibility with high-density PCB layouts.
Technical Context
The MAX14874ETC+ implements two independent high-side/low-side MOSFET drivers with integrated free-wheeling diodes and slope-controlled switching (200 V/μs slew rate) to suppress EMI. Each driver supports PWM speed/torque control via dedicated INx inputs and enable/disable sequencing via ENx pins.
Current sensing is implemented through separate COM1/COM2 terminals referenced to GND, supporting external sense resistors ≤100mΩ; fault detection combines cycle-by-cycle overcurrent blanking (1μs), autoretry timeout (2ms), and thermal shutdown at +160°C with 10°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5V to 36V - enables direct operation from 12V/24V industrial rails without external regulators |
| Peak Output Current | 2.5A per channel - sufficient for driving 24V solenoids or 30W brushed DC motors |
| Bridge On-Resistance | 480mΩ (typ) - limits conduction loss to <300mW at 1A, reducing thermal load |
| Dead Time | 140ns (typ) - prevents shoot-through during switching transitions |
| Fault Signaling | Open-drain active-low FAULT - asserts during overcurrent, short-circuit, or thermal overload |
| Operating Temperature | -40°C to +85°C - qualified for industrial ambient environments |
| Package | 12-pin TDFN-EP (3mm × 3mm) - supports compact, thermally efficient layout with exposed pad grounding |
Pinout & Package
MAX14874ETC+ uses a 12-pin TDFN-EP (3mm × 3mm) package with exposed thermal pad (EP) connected to GND. The package supports reflow soldering (260°C) and offers θJA = 41°C/W on multilayer boards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| COM1, COM2 | Current-sense outputs | Reference points for external sense resistors; voltage ≤1V indicates load current ≤1A when RSENSE = 1Ω |
| M1, M2 | H-bridge outputs | Push-pull driver terminals capable of sourcing/sinking up to 2.5A; include internal body diodes |
| EN1, EN2 | Active-high enable inputs | Disable respective driver into high-impedance state when low; support independent channel control |
| IN1, IN2 | Logic-level control inputs | Determine output polarity: high → Mx = VDD, low → Mx = GND (per function table) |
| FAULT | Open-drain fault indicator | Pulled low during thermal shutdown, overcurrent, or undervoltage lockout; requires external pull-up |
| VDD (pins 3,10) | Power supply input | Must be bypassed with ≥1μF ceramic capacitor per pin; both pins must be shorted on PCB |
| GND (pin 9) | Ground reference | Primary return path; EP pad must be soldered to GND plane for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Charge-pump-less architecture | Eliminates external capacitors and reduces quiescent current to 0.5–1.2mA, simplifying power design |
| Independent COM-pin current sensing | Enables real-time per-channel load monitoring without shunt amplifiers or ADC overhead |
| Slew-rate controlled outputs | 200 V/μs transition limiting reduces radiated EMI and eliminates need for external snubbers |
| Integrated short-circuit protection | Protects against M1/M2 shorts to VDD, GND, or each other - functional with RSENSE ≤50mΩ |
| Autoretry overcurrent recovery | Re-enables drivers for 1μs every 2ms during sustained faults, enabling graceful degradation instead of latch-off |
Applications
| Coffee Machine Valve Control | Industrial Solenoid Actuation |
|---|---|
Use Scenario: Precise on/off timing of water flow valves in semi-automatic espresso machines. IC Role / Device Role / Timing Role: Dual-channel push-pull driver delivering 24V/1.2A pulses to bistable solenoid valves with synchronized enable/disable sequencing. Use Value: Enables compact, low-EMI valve control without external flyback diodes or current-sense ICs - reducing BOM count by 4 components per valve. | Use Scenario: Remote actuation of pneumatic/hydraulic solenoid valves in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: High-voltage (up to 36V), robust relay replacement with diagnostic FAULT feedback to controller MCU. Use Value: Provides short-circuit immunity and thermal fault reporting - eliminating field failures due to coil shorts or ambient overheating. |
| Brushed DC Motor Positioning | Appliance Pump Control |
Use Scenario: Bidirectional speed and direction control of small DC motors in robotic vacuum cleaners. IC Role / Device Role / Timing Role: PWM-driven H-bridge with independent IN/EN logic, supporting 50kHz switching and precise torque regulation. Use Value: Delivers 2.5A peak current with <480mΩ RON, minimizing heat rise in sealed enclosures - extending motor life and battery runtime. | Use Scenario: Low-noise, high-reliability drive for circulation pumps in dishwashers and washing machines. IC Role / Device Role / Timing Role: Dual-driver IC managing pump start/stop and reverse cycles while monitoring load current via COM pins. Use Value: Detects pump blockage or dry-run via current signature analysis - enabling automatic shutdown before motor damage occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual H-bridge motor/valve driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB9051FTG | Higher 3.5A peak current, built-in current DAC, SPI interface; larger HTSSOP-28 package | Requires microcontroller SPI communication; better suited for closed-loop torque control systems | Select when digital diagnostics, programmable current limits, or higher drive capability are required - not drop-in compatible |
| DRV8876PWPR | Lower 1.8A peak current, no COM-pin sensing, integrated current regulation; 16-pin HTSSOP | Lacks per-channel analog current monitoring; relies on internal current-limit threshold only | Choose for cost-sensitive, lower-power valve control where discrete current sensing is acceptable |
Compared with TB9051FTG and DRV8876PWPR, the MAX14874ETC+ uniquely balances analog current visibility (via COM pins), compact 3mm × 3mm footprint, and robust fault handling - making it optimal for space-constrained industrial actuators requiring deterministic analog feedback without added ICs.
Availability
MAX14874ETC+ is available at Aetrix Electronics and suitable for coffee machine valve control, industrial solenoid actuation, and brushed DC motor positioning requiring stable component supply across extended production lifecycles.
Supply support for MAX14874ETC+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications applications.
The MAX14874ETC+ belongs to Maxim's high-voltage interface driver product line, engineered specifically for reliable, low-EMI control of inductive loads in harsh industrial environments.
FAQ
What is the maximum continuous current the MAX14874ETC+ can deliver per channel?
The MAX14874ETC+ supports up to 2.5A peak current per channel, but continuous current depends on thermal design. With proper PCB copper area and the exposed pad soldered to GND, it sustains ~1.5A continuously at +70°C ambient. Derating applies above that temperature - refer to θJA = 41°C/W and PDRIVER = ILOAD² × RON for accurate thermal modeling of the MAX14874ETC+.
Does the MAX14874ETC+ require external flyback diodes for inductive load protection?
No, the MAX14874ETC+ integrates internal free-wheeling diodes across each H-bridge leg, eliminating the need for external flyback diodes in standard relay, valve, or brushed DC motor applications. These diodes handle inductive kickback during turn-off, provided the COM-pin sense resistors meet the specified ≤100mΩ limit for safe short-circuit operation of the MAX14874ETC+.
How does the FAULT pin behave during an overcurrent event on the MAX14874ETC+?
During overcurrent, the MAX14874ETC+ asserts FAULT low after a 1μs blanking window and disables the affected driver. If the fault persists beyond 2ms, it enters autoretry mode - briefly re-enabling the driver for 1μs every 2ms while holding FAULT low. FAULT remains low until the fault clears and the device resets, providing unambiguous latched-fault signaling for the host MCU monitoring the MAX14874ETC+.
Can the MAX14874ETC+ drive a single DC motor in H-bridge mode using both channels?
Yes, the MAX14874ETC+ supports full H-bridge motor control: connect M1 and M2 to opposite motor terminals, use IN1/IN2 for direction control (e.g., IN1=high/IN2=low for forward), and EN1/EN2 together for PWM speed modulation. Its independent enable/control logic and shoot-through protection make the MAX14874ETC+ suitable for bidirectional brushed DC motor applications without external logic.
What is the recommended sense resistor value for current monitoring on COM1/COM2 of the MAX14874ETC+?
For optimal signal-to-noise ratio and headroom, use RSENSE = 100mΩ to 500mΩ depending on expected load current. At 1A load, a 100mΩ resistor yields 100mV at COM - well within the -0.25V to +1V COM voltage range. Do not exceed 1V at COM; for 2.5A peak, RSENSE ≤ 400mΩ ensures compliance. Always route COM traces away from noisy switching nodes to preserve accuracy in the MAX14874ETC+.
MAX14874ETC+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver
- Output Configuration:
- Half Bridge (2)
- Interface:
- Parallel
- Technology:
- Bi-CMOS
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 3A
- Voltage - Supply:
- 4.5V ~ 36V
- Voltage - Load:
- 4.5V ~ 36V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-TDFN (3x3)
MAX14874ETC+ FAQ
1.How can I place an order for MAX14874ETC+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14874ETC+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX14874ETC+ reliable?
The price and inventory of MAX14874ETC+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14874ETC+ is usually 5 days.
3.What payment methods are accepted for MAX14874ETC+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14874ETC+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14874ETC+?
MAX14874ETC+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14874ETC+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX14874ETC+?
For technical support, including MAX14874ETC+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14874ETC+ requirements.
6.How does Aetrix verify that MAX14874ETC+ is sourced from the original manufacturer or authorized distributors?
All MAX14874ETC+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX14874ETC+ meets industry standards.
7.What is the process for return or replacement of MAX14874ETC+?
All MAX14874ETC+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14874ETC+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX14874ETC+ part is unused and in its original packaging.
Return procedure for MAX14874ETC+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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