Monolithic Power Systems Inc. MP6604CGF-P

Overview

MP6604CGF-P from Monolithic Power Systems is a dual H-bridge motor driver IC designed for bipolar stepper and brushed DC motor control in industrial motion systems. It operates from 4.5V to 45V input voltage, delivers up to 2.5A per phase, features integrated 150mΩ R_DS(ON) N-channel MOSFETs, and includes over-current, over-voltage, under-voltage, and thermal shutdown protection. Used in 3D printers and laser copiers for precise bidirectional motor actuation.

For engineers reviewing the MP6604CGF-P datasheet, MP6604CGF-P pinout, MP6604CGF-P application, or MP6604CGF-P equivalent, key selection criteria include its HS/LS independent control architecture, QFN/TSSOP package thermal performance, fault reporting via open-drain nFAULT, and compatibility with 3.3V/5V logic interfaces in embedded motor control designs.

Technical Context

The MP6604CGF-P integrates eight N-channel power MOSFETs configured as four independently controllable half-H-bridges, enabling dual full-H-bridge (stepper) or quad half-H-bridge (solenoid/valve) operation. Its gate drivers use charge-pump-based high-side biasing (VCP ≥ VIN + 5V) and internal 5V LDO (VREG) for low-side drive.

Protection is implemented at silicon level: OCP triggers at 3–4.5A with 1µs deglitch, UVLO activates at 4.5V rising threshold with 300mV hysteresis, OVP trips at 45–48V, and thermal shutdown engages at 165°C with 15°C hysteresis. Fault status is reported synchronously via open-drain nFAULT.

Key Specifications

Pinout & Package

TSSOP-28EP package with exposed thermal pad (JEDEC MO-153, AET variant); 9.7mm × 4.4mm body, 0.65mm pitch, 1.2mm max height. Thermal vias recommended to inner ground planes for 3.9W power dissipation at 25°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TB6612FNG and DRV8876N, MP6604CGF-P offers balanced integration-retaining discrete HS/LS control flexibility while embedding critical protections and charge-pump biasing absent in legacy parts, making it optimal for space-constrained 24V industrial motion where reliability trumps configurability.

Availability

MP6604CGF-P is available at Aetrix Electronics and suitable for 3D printer motion control, stage lighting actuation, and laser printer paper feed systems requiring stable component supply across multi-year production cycles.

Supply support for MP6604CGF-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 over 20 years of expertise in DC/DC converters, motor drivers, and LED controllers.

The MP6604C product line targets industrial and commercial motion control applications, delivering integrated dual H-bridge solutions that replace discrete MOSFET+driver combinations while maintaining design flexibility through independent HS/LS inputs.

FAQ

What is the maximum continuous output current per channel under typical PCB layout conditions?

The MP6604CGF-P supports 2.5A continuous current per phase when mounted on a 4-layer PCB with 2oz copper, thermal vias under the exposed pad, and ambient temperature ≤25°C. Derating is required above 25°C per the θ_JA = 32°C/W spec; at 70°C ambient, max current drops to ~1.8A.

Does MP6604CGF-P require external bootstrap capacitors for high-side drive?

No. The device integrates a charge pump (VCP output) that generates a voltage ≥VIN + 5V for high-side gate drive. Only three external capacitors are required: 100nF between CPA–CPB, 1µF from VCP to VIN, and 1µF from VREG to GND-all specified as X7R ceramics rated ≥16V.

How does the nFAULT pin behave during different fault conditions?

nFAULT is an open-drain output pulled low during over-current, over-voltage, under-voltage, or over-temperature events. It remains latched low until nRESET is pulsed low or VIN is cycled. No distinction between fault types is provided on this pin-system firmware must correlate nFAULT assertion with register reads or timing diagnostics.

Can MP6604CGF-P drive unipolar stepper motors?

No. The MP6604CGF-P is designed exclusively for bipolar stepper motors (requiring full-H-bridge winding reversal) and brushed DC motors. Unipolar steppers require center-tapped windings and single-ended drive, which this IC does not support due to its dual-H-bridge topology and lack of common-anode outputs.

What is the minimum pulse width required for reliable nSLEEP entry and exit?

A logic-low pulse ≥100ns on nSLEEP guarantees entry into sleep mode. After waking, the device requires ≥600µs for internal regulators and charge pump stabilization before delivering valid gate drive signals-this delay is fixed and non-programmable per the datasheet.

Is the MP6604CGF-P RoHS-compliant and lead-free?

Yes. MP6604CGF-P is fully RoHS-compliant, lead-free, and halogen-free per MPS green status documentation. It meets JEDEC J-STD-020 moisture sensitivity level (MSL) 2a for the TSSOP-28EP package, requiring bake-before-reflow if exposed to ambient >30°C/60% RH for >168 hours.