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

Monolithic Power Systems Inc. MP6650GJL-0000-P

Name: MP6650GJL-0000-P
Brand: Monolithic Power Systems Inc.
SKU: MP6650GJL-0000-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MP6650GJL-0000-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Motor Drivers, Controllers

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

Datasheet:: MP6650GJL-0000-P.pdf

Description:: 18V, 2A,SINGLE-PHASE, BLDC MOTOR

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Product details

Overview

MP6650GJL-0000-P from Monolithic Power Systems is a single-phase BLDC motor driver IC with integrated Hall-effect sensor, power MOSFETs (740 mΩ total R_DS(on)), and reverse-voltage protection. It delivers up to 2 A output current, operates from 3.3 V to 18 V, and features configurable speed curve, soft on/off phase transitions, and rotor lock detection via open-drain FG/RD pin - used in CPU fan control for servers and desktop PCs.

For engineers reviewing the MP6650GJL-0000-P datasheet, MP6650GJL-0000-P pinout, MP6650GJL-0000-P application, or MP6650GJL-0000-P equivalent, key selection criteria include Hall-integrated single-phase drive capability, TSOT23-6-L package compatibility, 26 kHz fixed switching frequency, input reverse protection, and programmable current limit (0.7–2 A) for thermal and acoustic optimization in compact cooling systems.

Technical Context

The MP6650 implements closed-loop commutation using an embedded Hall sensor to detect rotor position and synchronize MOSFET switching with winding BEMF zero-crossing via automatic phase-lock logic. Its internal PWM controller accepts 2–100 kHz input and generates fixed 26 kHz gate drive with configurable soft-start/soft-stop angles (22.5°–45°).

Protection architecture includes input OVP (19.2 V), UVLO (3.25 V), thermal shutdown (150 °C), rotor deadlock detection (0.6 s timeout), and overload current limiting (configurable 0.7–2 A). All protections feature automatic recovery except thermal shutdown, which resumes only after die temperature drops below hysteresis threshold.

Key Specifications

Parameter	Value and Actual Design Meaning
Input voltage range	3.3 V to 18 V - supports wide-range DC supply without external LDO; includes reverse-voltage protection to eliminate external diode.
Output current capability	Up to 2 A - configurable current limit (0.7/1.1/1.6/2 A) enables thermal derating for fan load variations.
Switching frequency	Fixed 26 kHz - above audible range to suppress fan whine; eliminates need for external frequency-setting components.
Hall sensor sensitivity	Operate point: 1–2 mT; release point: –2 to –1 mT - ensures reliable rotor position detection across temperature (–40 °C to +125 °C).
FG/RD output	Open-drain signal - provides either rotational speed feedback (FG) or rotor lock fault indication (RD), selectable via register bit FGRD[1:0].
Soft transition angle	22.5° (soft-on at 100% duty), 45° (soft-off at 100% duty) - reduces mechanical vibration and EMI during speed changes.
Thermal shutdown	150 °C with 25 °C hysteresis - protects die under sustained overload; automatic recovery avoids system latch-up.

Pinout & Package

MP6650GJL-0000-P is housed in a TSOT23-6-L package - a 6-pin, lead-free, RoHS-compliant surface-mount package with 0.95 mm pitch, 2.9 mm × 1.6 mm footprint, and exposed pad for thermal enhancement. Pin 1 is lower-left when reading top marking left-to-right.

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Power ground reference	Primary return path for motor current and IC bias; must be low-impedance connection to minimize noise coupling into Hall sensor.
2 VCC	Supply input	3.3–18 V input with integrated reverse-voltage protection; powers internal LDO, Hall sensor, and gate drivers.
3 FG/RD	Open-drain status output	Configurable as speed indicator (FG) or rotor lock fault flag (RD); requires external pull-up resistor for logic-level interface.
4 PWM	Speed control input	2–100 kHz PWM signal accepted with internal 41–50 kΩ pull-up; duty cycle linearly maps to motor speed via programmable lookup table.
5 OUT2	Motor driver output 2	Mid-point of internal N-channel half-bridge; connects to one motor winding terminal; switches with complementary timing to OUT1.
6 OUT1	Motor driver output 1	Mid-point of internal N-channel half-bridge; connects to second motor winding terminal; drives motor phase with synchronized Hall-based commutation.

Key Features

Feature	Design Value
Integrated Hall sensor	High-sensitivity (1–2 mT operate point) monolithic Hall element eliminates external sensor placement and alignment complexity.
Configurable speed curve	14H register sets starting duty (e.g., 12.5%); 00h–08h registers define full 0–100% output duty mapping - enables custom fan RPM vs. PWM response.
Automatic phase-lock detection	Synchronizes MOSFET switching with winding BEMF zero-crossing using Hall edge timing - ensures optimal torque and efficiency across speed range.
Soft on/off phase transition	Gradual duty ramp (max 16 steps) reduces current slew rate - lowers EMI, audible noise, and mechanical stress on fan bearings.
Input reverse-voltage protection	Shuts down internal circuitry when VCC < 0 V - prevents damage from accidental polarity reversal without external diode.
Programmable current limit	Four selectable thresholds (0.7/1.1/1.6/2 A) via SUCL[1:0] bits - balances torque delivery against thermal margin in space-constrained designs.

Applications

CPU Fan Control

Server Chassis Cooling

Use Scenario: Regulating airflow over high-power CPUs in desktop and workstation platforms where thermal headroom is limited and acoustic noise must be minimized.

IC Role / Device Role / Timing Role: Single-phase BLDC driver with embedded Hall sensor performs real-time rotor position sensing and synchronous commutation at 26 kHz.

Use Value: Soft on/off transitions reduce fan vibration and audible whine; configurable speed curve enables precise thermal-acoustic trade-off per BIOS profile.

Use Scenario: Driving multiple 40–80 mm fans in 1U/2U server chassis requiring stable speed control under variable ambient temperatures and dust loading.

IC Role / Device Role / Timing Role: Integrated motor driver with rotor lock detection (RD) and automatic retry (3.6 s default) maintains cooling continuity during transient stall events.

Use Value: Input reverse-voltage protection and OVP/UVLO ensure robust operation in shared PSU environments; TSOT23-6-L footprint saves board area in dense layouts.

Industrial Embedded Fan Modules

Network Equipment Thermal Management

Use Scenario: Compact, sealed fan modules for industrial PCs and edge computing gateways operating in extended temperature ranges (–40 °C to +125 °C).

IC Role / Device Role / Timing Role: Hall-integrated driver replaces discrete Hall + gate driver + MOSFET solution; thermal shutdown with hysteresis prevents thermal runaway.

Use Value: Programmable current limit (0.7–2 A) allows same IC to support multiple fan models; OTP registers retain configuration across power cycles.

Use Scenario: Fan control in routers, switches, and baseband units where EMI compliance and long-term reliability are critical under continuous 24/7 operation.

IC Role / Device Role / Timing Role: Fixed 26 kHz switching frequency avoids interference with Ethernet PHY clock domains; FG output feeds telemetry to BMC for predictive maintenance.

Use Value: Integrated reverse-voltage and OVP protection eliminate field failures from power supply miswiring; small TSOT23-6-L package eases layout in multi-fan PCBs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-phase BLDC motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP6651GJL-Z	Same TSOT23-6-L package and Hall-integrated architecture; adds I²C interface for real-time register readback and dynamic parameter tuning.	Required where firmware-controlled speed profiling or live fault diagnostics (e.g., FG pulse counting, RD event logging) are needed beyond static PWM control.	Select MP6651GJL-Z if system-level software requires runtime access to Hall status, current limit, or thermal data - not suitable for pure hardware PWM systems.
DRV10970PWP	TI device in HTSSOP-16 package; higher 3 A output current but no integrated Hall sensor - requires external Hall IC and more external components.	Used in higher-torque fans (>2 A) where board space is less constrained and Hall sensor placement flexibility is prioritized over integration.	Choose DRV10970PWP only when >2 A drive capability is mandatory and external Hall sensor routing is acceptable; increases BOM count and layout complexity.

Compared with MP6650GJL-0000-P, MP6651GJL-Z adds configurability at the cost of I²C dependency, while DRV10970PWP trades integration for raw current headroom - making MP6650GJL-0000-P optimal for cost-sensitive, space-constrained, Hall-coupled CPU fan designs.

Availability

MP6650GJL-0000-P is available at Aetrix Electronics and suitable for CPU fan control, server chassis cooling, industrial embedded fan modules, and network equipment thermal management requiring stable component supply, consistent parametric performance, and long-lifecycle availability.

Supply support for MP6650GJL-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, including DC/DC converters, motor drivers, and LED drivers - known for integration, efficiency, and thermal robustness.

The MP6650 belongs to MPS's Phase Fan Driver product line, designed specifically for compact, intelligent, Hall-sensor-based BLDC fan control in computing and communications infrastructure where acoustic noise, reliability, and board-area savings are critical.

FAQ

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

The FG/RD pin serves dual roles: as a rotational speed indicator (FG) outputting pulses proportional to motor RPM, or as a rotor lock fault flag (RD) pulled low during stall detection. Configuration is controlled by register 0x0A bits FGRD[1:0]: 00 = FG mode, 01 = 50% FG frequency, 11 = RD mode. The pin is open-drain and requires an external pull-up resistor (typically 4.7–10 kΩ) to system VDD.

Does MP6650GJL-0000-P require external MOSFETs or Hall sensors?

No. MP6650GJL-0000-P integrates both power MOSFETs (740 mΩ total R_DS(on)) and a monolithic Hall-effect sensor within the TSOT23-6-L package. This eliminates the need for external gate drivers, discrete Hall ICs, or current-sense resistors - reducing bill-of-materials count and PCB footprint versus discrete solutions.

How is the speed vs. PWM duty curve programmed, and what is the default setting?

The speed curve is defined by eight 8-bit registers (0x00–0x08), each storing output duty percentage (0x00 = 0%, 0xFF = 100%) corresponding to 0–100% input PWM duty. Default values range from 0x1F (31%) at 0% input to 0xFF (100%) at 100% input. Starting duty is set by register 0x14 (default 0x20 = 12.5%), and SPD_ZERO bit (0x0B bit 5) determines whether speed drops to zero or minimum below that threshold.

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

MP6650GJL-0000-P includes input OVP (19.2 V), UVLO (3.25 V), thermal shutdown (150 °C), rotor deadlock detection (0.6 s timeout), and overload current limiting (configurable 0.7–2 A). All protections except thermal shutdown auto-recover after fault removal. Thermal shutdown resumes only after die temperature falls below hysteresis threshold (125 °C).

Can the soft on/off transition be disabled, and what is the impact?

Yes, soft switching can be disabled via register 0x0D bit SOFTEN (bit 6). When disabled, the driver reverts to hard-switching commutation - increasing EMI, audible noise, and mechanical vibration during speed changes. Soft transition is recommended for all applications where acoustic performance or bearing life is critical.

Is the TSOT23-6-L package thermally adequate for 2 A continuous operation?

Yes - with proper PCB layout (≥2 cm² copper pour connected to GND pin and exposed pad), the TSOT23-6-L achieves θ_JA ≈ 100 °C/W, allowing ~1.25 W continuous dissipation at 25 °C ambient. At 2 A output and 12 V supply, typical power loss is ~0.3 W (I²R), well within thermal limits. For higher ambient or sustained loads, thermal relief vias under the exposed pad are recommended.

How does rotor lock detection work, and what happens after detection?

Rotor lock is detected when no Hall sensor edge transition occurs within 0.6 s. The IC pulls FG/RD low (if configured for RD mode) and disables H-bridge outputs. After a configurable lock-retry time (default 3.6 s), it attempts automatic restart. Three valid Hall edges must be observed post-release before FG output resumes - preventing false restarts during partial rotation.

MP6650GJL-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:: Unipolar

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

Function:: Driver

Output Configuration:: Half Bridge (2)

Interface:: PWM

Technology:: Power MOSFET

Step Resolution:: -

Applications:: Brushless DC (BLDC)

Current - Output:: 2A

Voltage - Supply:: 3.3V ~ 18V

Voltage - Load:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

MP6650GJL-0000-P FAQ

1.How can I place an order for MP6650GJL-0000-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MP6650GJL-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 MP6650GJL-0000-P reliable?

The price and inventory of MP6650GJL-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 MP6650GJL-0000-P is usually 5 days.

3.What payment methods are accepted for MP6650GJL-0000-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6650GJL-0000-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP6650GJL-0000-P?

MP6650GJL-0000-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP6650GJL-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 MP6650GJL-0000-P?

For technical support, including MP6650GJL-0000-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6650GJL-0000-P requirements.

6.How does Aetrix verify that MP6650GJL-0000-P is sourced from the original manufacturer or authorized distributors?

All MP6650GJL-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 MP6650GJL-0000-P meets industry standards.

7.What is the process for return or replacement of MP6650GJL-0000-P?

All MP6650GJL-0000-P units undergo pre-shipment inspection (PSI). If there is an issue with MP6650GJL-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 MP6650GJL-0000-P part is unused and in its original packaging.

Return procedure for MP6650GJL-0000-P:

1.Submit a request within 90 days.

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

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