Monolithic Power Systems Inc. MP6614GN-P

Overview

MP6614GN-P from Monolithic Power Systems is a 35V H-bridge DC motor driver IC integrating four N-channel MOSFETs, internal charge pump, and cycle-by-cycle current regulation. It delivers up to 2A continuous output current across 5V–35V input range, supports 100% duty-cycle PWM control, and provides proportional current-sense output (VISEN) without external shunt resistors. Used in brushed DC motor control for industrial actuators requiring bidirectional drive and thermal robustness.

For engineers reviewing the MP6614GN-P datasheet, MP6614GN-P pinout, MP6614GN-P application, or MP6614GN-P equivalent, key selection criteria include its SOIC-8EP thermally enhanced package, integrated current limiting with 3.0V rising trip threshold, 280mΩ HS/220mΩ LS R_DS(ON), OCP/OTP/UVLO protection, and compatibility with 3.3V/5V logic interfaces.

Technical Context

The MP6614GN-P implements a constant-off-time PWM current regulator using internal sensing of low-side MOSFET conduction, with blanking time (800ns) to suppress reverse-recovery spikes. Its gate driver uses an internal charge pump to sustain full N-channel FET enhancement across the 5V–35V VIN range.

Logic inputs (IN1/IN2) define four functional states: forward (H/L), reverse (L/H), brake (H/H), and coast/sleep (L/L for ≥2ms). Current regulation triggers slow-decay braking when load current reaches ITRIP - set by external resistor on ISET pin - with VISEN = 2 × VISET and ±5% accuracy above 0.5V.

Key Specifications

Pinout & Package

MP6614GN-P is housed in a thermally enhanced SOIC-8EP (exposed pad) package, optimized for surface-mount assembly and high-power dissipation via PCB thermal vias under the EP pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar H-bridge motor driver applications.

Compared with TB6612FNG and DRV8876N, MP6614GN-P uniquely balances wide 5–35V operation, integrated VISEN feedback, sub-1μA sleep, and SOIC-8EP thermal performance - making it optimal for space-constrained, battery-aware industrial motion control.

Availability

MP6614GN-P is available at Aetrix Electronics and suitable for industrial linear actuators, automated valve control, robotic joint drivers, and portable medical pumps requiring stable component supply and long-term manufacturability.

Supply support for MP6614GN-P 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with design centers in the US, China, and Taiwan.

The MP6614 belongs to MPS's motor driver product line, engineered for compact, thermally efficient bidirectional DC motor control in industrial and portable equipment where integration, reliability, and analog current feedback are critical.

FAQ

What is the minimum input voltage required for MP6614GN-P to start switching?

The MP6614GN-P has a VIN start-up threshold of 4.4V (typical) with 0.2V hysteresis. Below 4.4V, the device remains in UVLO state and disables all outputs. Operation is guaranteed only above 5V per recommended conditions, ensuring stable gate drive and current regulation functionality.

How is the current limit set on MP6614GN-P, and what resistor value yields 1.5A trip current?

The current limit is set by connecting a resistor between ISET and GND. For 1.5A ITRIP, use R_ISET = V_{ITRIP_R} / I_ISET = 1.5V / 100μA = 15kΩ. This yields VISET = 1.5V and VISEN = 3.0V at trip, with ±5% accuracy above 0.5V input to ISET.

Does MP6614GN-P require external bootstrap capacitors for high-side drive?

No. MP6614GN-P integrates a charge pump that generates boosted gate drive voltage for all four N-channel MOSFETs. No external bootstrap capacitors or diodes are needed - simplifying layout and eliminating boot-related failure modes common in discrete gate driver designs.

Can MP6614GN-P drive a stepper motor winding, and what is the maximum recommended PWM frequency?

Yes - MP6614GN-P can drive one bipolar stepper motor winding. The datasheet specifies 100kHz maximum externally applied PWM frequency. At 20kHz, switching losses remain low while avoiding audible noise; dead time (200ns) and propagation delays (<500ns) ensure clean commutation.

What thermal design practices are mandatory for 2A continuous operation?

To sustain 2A continuous current, the SOIC-8EP exposed pad must be soldered to a solid GND plane with ≥6 thermal vias (0.3mm diameter, spaced ≤1mm apart) connecting to inner/outer copper layers. Input capacitance must be placed within 3mm of VIN/GND pins, and ambient temperature must stay ≤85°C per derating curves.

Is MP6614GN-P RoHS-compliant and halogen-free?

Yes - MP6614GN-P is lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU. MPS confirms green status on its official website under Quality Assurance documentation, with material declarations available upon request for automotive or medical qualification.