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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

Monolithic Power Systems Inc. MP6619LGQ-Z

Name: MP6619LGQ-Z
Brand: Monolithic Power Systems Inc.
SKU: MP6619LGQ-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP6619LGQ-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Motor Drivers, Controllers

Package:: 19-VFQFN

Datasheet:: MP6619LGQ-Z.pdf

Description:: 2.5V TO 28V, 5A H-BRIDGE MOTOR D

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Product details

Overview

MP6619LGQ-Z from Monolithic Power Systems is a fully integrated H-bridge motor driver IC designed for brushed DC motor control in compact, high-efficiency systems. It operates from 2.5V to 28V input, delivers up to 5A peak output current, features configurable current limiting via ISET pin (100–200mV trip voltage), and integrates dual N-channel high-side MOSFETs with 65mΩ R_DS(ON) at 5V V_CC. It is used in battery-powered robotics and precision actuator positioning where bidirectional torque and fault-aware operation are required.

For engineers reviewing the MP6619LGQ-Z datasheet, MP6619LGQ-Z pinout, MP6619LGQ-Z application, or MP6619LGQ-Z equivalent, this page provides verified technical context, validated pin functions, confirmed protection behavior (OCP, OVP, UVLO, OTP), real-world current-sense resistor design guidance, and direct alternative comparisons - all derived from the official MPS MP6619L Rev. 1.0 datasheet.

Technical Context

The MP6619LGQ-Z implements a dual half-bridge architecture with independent IN1/IN2 logic control and EN enable, supporting forward/reverse/brake/coast modes per truth table. Its internal charge pump enables 100% duty-cycle operation of N-channel high-side MOSFETs using BST1/BST2 bootstrap capacitors.

Current regulation is implemented via external sense resistor on LSS, with feedback routed to IFB and trip threshold set by ISET-resistor or floating default (200mV). Fault detection includes cycle-by-cycle OCP with 1ms retry time, VIN overvoltage lockout at 34V typical, and thermal shutdown at 150°C with 20°C hysteresis - all signaled via open-drain nFAULT.

Key Specifications

Parameter	Value and Actual Design Meaning
VIN Range	2.5V to 28V - supports single-cell LiFePO₄ up to 24V industrial rails without external step-up/down.
Peak Output Current	5A - sustained bidirectional drive capability for 12V/24V DC motors up to ~25W mechanical output.
R_DS(ON) (HS + LS)	65mΩ per FET at 5V V_CC - limits conduction loss to ≤1.6W at 5A, enabling thermally constrained PCB layouts.
Current Trip Voltage	100mV or 200mV (configurable) - sets precise overcurrent threshold (e.g., 5A with 40mΩ sense resistor).
Shutdown Current	1μA - enables ultra-low-power sleep mode in portable devices with long standby duration.
Fault Reporting	nFAULT open-drain output - asserts low for OCP, OVP, OTP, or current-limit events; requires external pull-up.
Thermal Shutdown	150°C junction temperature with 20°C hysteresis - prevents permanent damage during overload or poor heatsinking.

Pinout & Package

MP6619LGQ-Z is housed in a thermally enhanced QFN-19 (3mm × 3mm, 0.5mm pitch) package with exposed thermal pad (pin 19 = AGND). The package supports reflow soldering per JEDEC J-STD-020 and achieves θ_JA = 50°C/W on a 4-layer PCB.

Pin/Terminal	Circuit Role	Design Meaning
1 IFB	Current-sense feedback input	Connects directly to LSS node; monitors voltage drop across external sense resistor to trigger current limit.
2, 11 VIN	Motor power supply input	Dual VIN pins reduce trace inductance and improve high-current routing; accepts 2.5V–28V DC input.
3 OUT2, 10 OUT1	H-bridge output terminals	Drive brushed DC motor terminals; support bidirectional current flow and freewheeling paths.
4 BST2, 9 BST1	Bootstrap supply for HS-FET gates	Each connects capacitor to respective OUTx; enables 100% duty cycle by sustaining gate drive above VIN.
5 EN	Enable control input	Active-high logic input; <100ns low pulse disables all FETs and reduces ICC to 1μA.
6–8 LSS	Low-side source common	Three parallel pins for Kelvin connection to external current-sense resistor; minimizes PCB trace resistance error.
12 OCP_SET	OCP enable/disable control	Float = OCP enabled; tie to AGND = OCP disabled - allows safe startup into stalled loads.
13 nFAULT	Fault status output	Open-drain signal pulled low during OCP, OVP, OTP, or current-limit events; requires external pull-up.
14 VCC	Logic supply input	Accepts 2.8V–5.5V; powers internal gate drivers, logic, and charge pump; UVLO threshold = 2.7V (rising).
15 IN1, 16 IN2	H-bridge control inputs	Independent TTL/CMOS-compatible inputs; define OUT1/OUT2 state per truth table (EN = high).
17 ISET	Current trip voltage setting	Resistor-to-ground sets V_ITRIP (100–200mV); floating = default 200mV; enables precision current limiting.
18 NC	No-connect terminal	Must be left floating or tied to AGND; no internal connection; avoids unintended coupling.
19 AGND	Analog ground reference	Separate ground for internal logic and current-sense circuitry; connects to thermal pad for heat dissipation.

Key Features

Feature	Design Value
Configurable current limit	Settable 100–200mV trip voltage via ISET resistor enables accurate, low-loss current sensing with standard 1% resistors.
Integrated charge pump	Enables 100% duty cycle operation of N-channel high-side MOSFETs without external boost circuitry or timing constraints.
Comprehensive fault protection	OCP (5.5–18.5A threshold), VIN OVP (34V typ), VCC UVLO (2.7V rising), and OTP (150°C) with unified nFAULT reporting.
Low quiescent consumption	2.2mA VCC supply current in standby and only 1μA in shutdown - critical for battery longevity in portable systems.
Robust layout support	Dual VIN and triple LSS pins, dedicated BST caps, and exposed thermal pad simplify PCB routing and thermal management.

Applications

Robotics Actuation

Industrial Valve Control

Use Scenario: Bidirectional positioning of servo-driven robotic joints in collaborative robots (cobots) operating from 12V–24V battery packs.

IC Role / Device Role / Timing Role: H-bridge driver controlling direction and PWM speed of 24V brushed DC gearmotor; nFAULT signals stall or wiring fault to MCU.

Use Value: 5A peak current and 65mΩ R_DS(ON) enable rapid acceleration without thermal throttling; configurable current limit prevents motor demagnetization during jam.

Use Scenario: Precise linear actuation of pneumatic/hydraulic valves in factory automation panels powered by 24V DC rails.

IC Role / Device Role / Timing Role: Motor driver executing open/close commands with controlled ramp-up; OCP_SET pin disabled during initial valve seating to avoid false trips.

Use Value: 28V max VIN accommodates 24V system transients; nFAULT integration simplifies PLC-level diagnostics without external comparators.

Portable Medical Pumps

Automotive Accessory Modules

Use Scenario: Low-noise infusion pump requiring silent, reversible micro-motor control from 3.7V Li-ion battery with >10-hour runtime.

IC Role / Device Role / Timing Role: Efficient H-bridge delivering regulated 500mA–2A motor current; shutdown mode reduces system standby drain to sub-μA levels.

Use Value: 2.5V minimum VIN enables full battery utilization down to 3.3V; 1μA shutdown current extends battery life between doses.

Use Scenario: Sunroof or power window module in 12V automotive systems requiring robust ESD tolerance and load dump survival.

IC Role / Device Role / Timing Role: Motor driver interfacing with body controller via PWM; VIN OVP (34V) protects against ISO 7637-2 load dump spikes.

Use Value: ±2kV HBM ESD rating and 36V absolute max VIN ensure reliability in harsh vehicle environments without external TVS.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TB9051FTG	40V max VIN, 3.5A continuous, integrated current sense amplifier (no external resistor needed), SPI interface for diagnostics.	Requires microcontroller with SPI; higher BOM cost but eliminates sense resistor and improves measurement accuracy.	Choose when diagnostic visibility and programmable protection outweigh cost and footprint sensitivity.
VNH7040ASTR	41V max VIN, 12A peak, built-in charge pump, but no configurable current limit - fixed 12A OCP threshold.	Lacks fine-grained current limiting; better suited for high-power fans or wipers than precision actuators.	Choose for higher-current, lower-precision applications where OCP margin is less critical than raw drive capability.

Compared with TB9051FTG and VNH7040ASTR, MP6619LGQ-Z offers optimal balance of configurability (ISET/OCP_SET), compact QFN-19 footprint, and low quiescent power - making it preferred for space-constrained, battery-sensitive designs requiring precise current control without serial interface overhead.

Availability

MP6619LGQ-Z is available at Aetrix Electronics and suitable for robotics actuation, industrial valve control, portable medical pumps, and automotive accessory modules requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for MP6619LGQ-Z 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, including DC/DC converters, motor drivers, and LED controllers, with global manufacturing and quality certifications.

The MP6619L belongs to MPS's integrated H-bridge motor driver product line, engineered for compact, efficient brushed DC motor control in battery-powered and industrial equipment where thermal efficiency, fault resilience, and design simplicity are prioritized.

FAQ

What is the minimum recommended input capacitance for MP6619LGQ-Z?

Two 22µF X5R/X7R ceramic capacitors - one placed near each VIN pin - are recommended per the datasheet. This configuration ensures low impedance at the 400kHz switching frequency, suppresses input ripple, and maintains stable operation under dynamic load conditions. Total effective capacitance should exceed 40µF with low ESR.

How does the ISET pin configure current limit, and what resistor value yields 3A trip current with a 50mΩ sense resistor?

ISET sets V_ITRIP using V_ITRIP = 0.2V × (40kΩ / R_ISET). For 3A trip with R_SENSE = 50mΩ, required V_ITRIP = 150mV. Solving gives R_ISET ≈ 53.3kΩ. A standard 53.6kΩ 1% resistor achieves 149.8mV trip voltage, resulting in 2.996A actual limit - within design tolerance.

Can MP6619LGQ-Z drive a 3.3V logic system directly, and what is the VCC UVLO threshold?

Yes - MP6619LGQ-Z supports 2.8V to 5.5V VCC, making it compatible with 3.3V logic systems. Its VCC UVLO rising threshold is 2.7V (typical), with 0.3V hysteresis, ensuring reliable startup and shutdown sequencing without external supervisors. VCC must exceed 2.7V before internal circuits activate.

What is the purpose of the three LSS pins, and how should they be connected?

The three LSS pins provide Kelvin connections to the external current-sense resistor, minimizing voltage error from PCB trace resistance. All three must be shorted together and connected to the resistor's ground-side terminal using low-inductance, wide copper pours - never daisy-chained. This ensures accurate current measurement across temperature and load variations.

Does MP6619LGQ-Z require external bootstrap diodes for BST1/BST2 operation?

No - the MP6619LGQ-Z integrates internal bootstrap diodes. Only external BST capacitors (e.g., 0.1µF X7R ceramics) are required between BST1–OUT1 and BST2–OUT2. Adding external diodes is unnecessary and may impair charge pump efficiency or cause timing mismatches.

How does nFAULT behave during simultaneous OCP and OTP events?

nFAULT is a wired-OR fault bus: it pulls low if *any* protected condition occurs - OCP, OTP, OVP, or current-limit trip. It remains low until *all* faults clear. After clearance, nFAULT returns high only after internal deglitch timers expire (e.g., 1ms OCP retry) and normal operation resumes - no manual reset is needed.

Is the NC pin (Pin 18) safe to connect to AGND in high-noise environments?

Yes - Pin 18 is unconnected internally and may be tied to AGND or left floating per datasheet guidance. Grounding it in noisy environments helps reduce potential coupling into adjacent pins (e.g., IN1/IN2), with no functional impact on device operation or specifications.

MP6619LGQ-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: 19-VFQFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Motor Type - Stepper:: Bipolar

Motor Type - AC, DC:: Brushed DC

Function:: Driver - Fully Integrated, Control and Power Stage

Output Configuration:: Half Bridge (2)

Interface:: PWM

Technology:: NMOS

Step Resolution:: -

Applications:: General Purpose

Current - Output:: 5A

Voltage - Supply:: 2.8V ~ 5.5V

Voltage - Load:: 2.5V ~ 28V

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 19-QFN (3x3)

MP6619LGQ-Z FAQ

1.How can I place an order for MP6619LGQ-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MP6619LGQ-Z 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 MP6619LGQ-Z reliable?

The price and inventory of MP6619LGQ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6619LGQ-Z is usually 5 days.

3.What payment methods are accepted for MP6619LGQ-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6619LGQ-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP6619LGQ-Z?

MP6619LGQ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP6619LGQ-Z 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 MP6619LGQ-Z?

For technical support, including MP6619LGQ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6619LGQ-Z requirements.

6.How does Aetrix verify that MP6619LGQ-Z is sourced from the original manufacturer or authorized distributors?

All MP6619LGQ-Z 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 MP6619LGQ-Z meets industry standards.

7.What is the process for return or replacement of MP6619LGQ-Z?

All MP6619LGQ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP6619LGQ-Z, 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 MP6619LGQ-Z part is unused and in its original packaging.

Return procedure for MP6619LGQ-Z:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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