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

Monolithic Power Systems Inc. MP6654GJR-0000-P

Name: MP6654GJR-0000-P
Brand: Monolithic Power Systems Inc.
SKU: MP6654GJR-0000-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP6654GJR-0000-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Motor Drivers, Controllers

Package:: SOT-23-6 Thin, TSOT-23-6

Datasheet:: MP6654GJR-0000-P.pdf

Description:: 18V SINGLE PHASE BLDC MOTOR DRIV

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Product details

Overview

MP6654GJR-0000-P from Monolithic Power Systems is a single-phase, ESD-enhanced BLDC fan driver IC with integrated Hall sensor and dual power MOSFETs (850mΩ total R_DS(ON)). It operates from 3V to 18V input, delivers up to 1A peak motor current, and supports PWM speed control from 1kHz to 100kHz - enabling precise thermal management in CPU and server cooling fans.

For engineers reviewing the MP6654GJR-0000-P datasheet, MP6654GJR-0000-P pinout, MP6654GJR-0000-P application, or MP6654GJR-0000-P equivalent, key selection criteria include configurable soft commutation angles (46.5°–46.8°), 27kHz fixed switching frequency, FG/RD open-drain rotational speed or lock detection output, and programmable 8-point speed curve mapping for dynamic thermal response.

Technical Context

The MP6654GJR-0000-P implements closed-loop commutation using an on-chip Hall sensor that feeds phase-aligned HA_OUT signals to drive OUT1/OUT2 H-bridge outputs. Its digital register map (0x00–0x14) enables configuration of soft-on/off angles (SON_ANG/SOFF_ANG), Hall offset (HAL_ANG), and FG/RD output scaling (0.5x/1x/2x).

Protection logic integrates hardware-level OVP (19.1V threshold), UVLO (2.76V rising), OCP (1A typ.), rotor lock detection (0.6s timeout), and thermal shutdown (165°C with 25°C hysteresis), all with auto-recovery - eliminating need for external fault-handling circuitry in fan control designs.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3V to 18V - supports wide-range DC supply including 5V, 12V, and 15V fan rails without external regulators.
Peak Output Current	1A - drives typical 8025 axial fans (450mA @ 5000rpm) with headroom for startup torque and transient loads.
Switching Frequency	27kHz (typ.) - fixed frequency minimizes audible noise and simplifies EMI filtering vs. variable-frequency drivers.
PWM Input Range	1kHz to 100kHz - compatible with standard microcontroller PWM peripherals and avoids aliasing with system clock domains.
Hall Sensor Integration	On-die Hall-effect sensor - eliminates external sensor placement, calibration, and routing complexity in compact fan modules.
FG/RD Output	Open-drain, selectable 0.5x/1x/2x Hall frequency or rotor lock indication - provides flexible tachometer feedback or fault signaling on single pin.
Thermal Shutdown	165°C with 25°C hysteresis - ensures safe operation under blocked-air or high-ambient conditions while enabling automatic recovery.

Pinout & Package

MP6654GJR-0000-P uses the TSOT23-6-R package - a reverse-pinout variant of the standard TSOT23-6, with pin 1 at bottom-left when marking side faces up and notch oriented left.

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Power ground reference	Primary return path for motor current and internal logic; must be low-impedance connection to PCB ground plane.
2 VCC	Input power supply	3V–18V supply input; requires local 1μF–10μF ceramic bypass capacitor to suppress switching noise.
3 FG/RD	Configurable open-drain output	Outputs tach signal (0.5x/1x/2x Hall freq) or active-low rotor lock flag; requires external pull-up resistor.
4 PWM	Speed control input	Accepts 1kHz–100kHz PWM duty cycle; internal 100kΩ pull-up enables single-wire interface from MCU GPIO.
5 OUT2	H-bridge low-side output	Drives one terminal of single-phase BLDC motor; paired with OUT1 to form full H-bridge with integrated MOSFETs.
6 OUT1	H-bridge high-side output	Drives opposite motor terminal; complements OUT2 with synchronized commutation timing derived from Hall sensor.

Key Features

Feature	Design Value
Configurable 8-point speed curve	Registers 0x01–0x08 set output duty at 12.5%–100% input PWM steps - enables custom thermal response profiles without firmware changes.
Soft-on/off commutation	Programmable SON_ANG (46.8°) and SOFF_ANG (46.5°) reduce mechanical stress and acoustic noise during fan start/stop transitions.
Integrated Hall sensor with offset tuning	HAL_ANG register adjusts phase shift (2.8°–45°) between raw Hall signal and commutation timing - compensates for magnet misalignment.
Auto-recovering protections	OVP, UVLO, OCP, rotor lock, and thermal shutdown all restore normal operation after fault clearance - no manual reset required.
ESD-enhanced design	2000V HBM / 750V CDM rating - meets robustness requirements for system-level IEC61000-4-2 ESD testing in server and industrial environments.

Applications

CPU Fan Control

Server Rack Cooling

Use Scenario: Dynamic thermal throttling in desktop and laptop CPUs using real-time temperature feedback.

IC Role / Device Role / Timing Role: BLDC motor driver with Hall-based commutation and PWM-controlled speed regulation.

Use Value: Enables silent low-speed operation (<1000rpm) and rapid ramp-up to 5000rpm during burst loads via configurable soft-start and 8-point curve.

Use Scenario: Redundant fan modules in 1U/2U rack servers requiring precise speed synchronization and fault reporting.

IC Role / Device Role / Timing Role: Single-chip fan controller providing FG tach feedback and RD lock detection over shared bus lines.

Use Value: Eliminates discrete Hall sensor + gate driver + protection IC bill-of-materials; reduces PCB area by >40% vs. multi-chip solutions.

Industrial Enclosure Ventilation

Network Switch Thermal Management

Use Scenario: Dust-resistant cooling in factory-floor PLC enclosures operating continuously at 60°C ambient.

IC Role / Device Role / Timing Role: ESD-hardened motor driver with thermal shutdown and auto-recovery for unattended operation.

Use Value: Sustains 12V/1A operation under thermal stress; 165°C shutdown threshold prevents permanent damage during airflow obstruction.

Use Scenario: Multi-fan cooling in Layer 3 switches where electromagnetic compatibility and low acoustic noise are critical.

IC Role / Device Role / Timing Role: Fixed 27kHz switching driver minimizing conducted EMI into high-speed SerDes lanes.

Use Value: Reduces tach signal jitter via 1x Hall frequency mode and suppresses audible whine through deterministic commutation timing.

Equivalent & Alternatives

The following parts are listed as comparable options for similar BLDC fan driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP6654GJS-0000-P	Same die, TSOT23-6-SL package (standard pinout) - differs only in physical orientation and top marking layout.	No functional difference; used where board layout requires conventional TSOT23-6 pin alignment.	Select when existing footprint or pick-and-place tooling is optimized for SL variant.
ALLEGRO A89335KLPTR-T	Single-phase BLDC driver with integrated Hall sensor but no programmable speed curve; fixed 25kHz fSW; 0.8A peak current.	Lacks 8-point curve configuration and soft-commutation angle tuning - limited flexibility for custom thermal profiles.	Choose only if register-level programmability is unnecessary and cost sensitivity outweighs feature set.

Compared with MP6654GJR-0000-P, the GJS variant offers identical electrical performance in a mechanically distinct package, while the A89335 provides basic Hall-driven commutation without the MP6654's configurable speed mapping, soft timing, or ESD robustness - making it suitable only for cost-constrained, non-programmable fan applications.

Availability

MP6654GJR-0000-P is available at Aetrix Electronics and suitable for CPU fan control, server rack cooling, industrial enclosure ventilation, and network switch thermal management requiring stable component supply across production lifecycles.

Supply support for MP6654GJR-0000-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 expertise in DC-DC converters, motor drivers, and battery management solutions.

The MP6654 product line targets intelligent thermal management systems, integrating Hall sensing, motor control, and protection logic into single-chip fan drivers to replace multi-component discrete solutions in space-constrained computing and infrastructure equipment.

FAQ

What is the function of the FG/RD pin, and how is its behavior configured?

The FG/RD pin serves dual roles: rotational speed indication (FG) or rotor lock detection (RD). Configuration is controlled by the FGRD[1:0] bits in register 0x0E. Values 00, 01, and 10 select 1x, 0.5x, or 2x scaling of the internal Hall signal frequency for tach output; value 11 configures it as an active-low rotor lock flag triggered after 0.6s of no Hall edge detection.

Does MP6654GJR-0000-P require external MOSFETs or Hall sensors?

No. The MP6654GJR-0000-P integrates both high-side and low-side power MOSFETs (total R_DS(ON) = 850mΩ) and a monolithic Hall-effect sensor within the TSOT23-6-R package. This eliminates external switching devices, sensor components, and associated biasing circuitry - reducing BOM count and layout complexity.

How is the speed curve programmed, and what is the default behavior?

Speed curve is programmed via registers 0x01–0x08, each setting output duty cycle at 12.5% increments of input PWM duty (e.g., D1=0x20 → 12.5% output at 12.5% input). Default values follow linear mapping (12.5% → 12.5%, 25% → 25%, ..., 100% → 100%). Curve parameters are stored in OTP memory after final configuration using MPS GUI software.

What protection features are implemented, and do they auto-recover?

MP6654GJR-0000-P includes input OVP (19.1V), UVLO (2.76V), OCP (1A), rotor lock detection (0.6s timeout), thermal shutdown (165°C), and short-circuit protection - all with auto-recovery. After fault clearance (e.g., voltage normalization, temperature drop below 140°C), the device resumes normal operation without external intervention or reset signal.

Can the MP6654GJR-0000-P drive fans at voltages below 5V?

Yes. The MP6654GJR-0000-P supports input voltages from 3V to 18V, making it suitable for 3.3V logic-supplied fans and low-voltage embedded systems. At 3V, it maintains functional UVLO margin (2.76V threshold) and delivers reduced but usable motor current - verified in typical performance curves for VCC down to 3V.

Is there a difference between MP6654GJR-0000-P and MP6654GJS-0000-P beyond packaging?

No functional difference exists. MP6654GJR-0000-P uses the TSOT23-6-R package (reverse pinout), while MP6654GJS-0000-P uses TSOT23-6-SL (standard pinout). Both share identical silicon, electrical specifications, register map, and thermal performance. Selection depends solely on PCB layout and assembly requirements.

MP6654GJR-0000-P Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: SOT-23-6 Thin, TSOT-23-6

Packaging:: Tape & Reel (TR)

Product Status:: Active

Motor Type - Stepper:: Bipolar

Motor Type - AC, DC:: Brushless DC (BLDC)

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

Output Configuration:: Half Bridge (2)

Interface:: PWM

Technology:: Power MOSFET

Step Resolution:: -

Applications:: Fan Motor Driver

Current - Output:: 1A

Voltage - Supply:: 3V ~ 18V

Voltage - Load:: 3V ~ 18V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TSOT-23-6-R

MP6654GJR-0000-P FAQ

1.How can I place an order for MP6654GJR-0000-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP6654GJR-0000-P 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 MP6654GJR-0000-P reliable?

The price and inventory of MP6654GJR-0000-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6654GJR-0000-P is usually 5 days.

3.What payment methods are accepted for MP6654GJR-0000-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6654GJR-0000-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP6654GJR-0000-P?

MP6654GJR-0000-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP6654GJR-0000-P 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 MP6654GJR-0000-P?

For technical support, including MP6654GJR-0000-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6654GJR-0000-P requirements.

6.How does Aetrix verify that MP6654GJR-0000-P is sourced from the original manufacturer or authorized distributors?

All MP6654GJR-0000-P 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 MP6654GJR-0000-P meets industry standards.

7.What is the process for return or replacement of MP6654GJR-0000-P?

All MP6654GJR-0000-P units undergo pre-shipment inspection (PSI). If there is an issue with MP6654GJR-0000-P, 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 MP6654GJR-0000-P part is unused and in its original packaging.

Return procedure for MP6654GJR-0000-P:

1.Submit a request within 90 days.

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

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