Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Monolithic Power Systems Inc. MP6650GJSR-0000-Z

Name: MP6650GJSR-0000-Z
Brand: Monolithic Power Systems Inc.
SKU: MP6650GJSR-0000-Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MP6650GJSR-0000-Z

Manufacturer:: Monolithic Power Systems Inc.

Category:: Motor Drivers, Controllers

Package:: SOT-23-6 Thin, Flat Leads

Datasheet:: MP6650GJSR-0000-Z.pdf

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

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,930

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MP6650GJSR-0000-Z 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/server fan control where compact size, acoustic noise reduction, and fault resilience are critical.

For engineers reviewing the MP6650GJSR-0000-Z datasheet, MP6650GJSR-0000-Z pinout, MP6650GJSR-0000-Z application, or MP6650GJSR-0000-Z equivalent, key selection criteria include Hall-integrated single-phase drive capability, TSOT23-6-RSL package compatibility, 26 kHz fixed switching frequency, programmable current limit (0.7–2 A), and integrated OVP/UVLO/thermal/RD protections - all verified in the MP6650 Rev. 1.0 datasheet.

Technical Context

The MP6650GJSR-0000-Z implements a Hall-sensor-based commutation controller for single-phase BLDC fans, using internal N-channel half-bridge MOSFETs (HS-FET: 550 mΩ typ, LS-FET: 320 mΩ typ) and automatic BEMF–current zero-crossing phase-lock detection. Its PWM input (2–100 kHz) linearly maps to output duty cycle, while configurable registers (e.g., 0x0A SUCL bits, 0x14 DUTY_STARTING) enable fine-tuned speed curve and startup behavior.

Protection architecture includes input reverse-voltage protection (RVP), 19.2 V over-voltage lockout with 0.9 V hysteresis, -40°C to +125°C operating junction range, and thermal shutdown at 150°C with 25°C hysteresis. The FG/RD pin provides dual-mode open-drain output: rotational speed indication (FG) or rotor deadlock fault signal (RD), selectable via register FGRD[1:0].

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 built-in RVP to eliminate external reverse-protection diode.
Output current capability	Up to 2 A - configurable via SUCL register (0.7/1.1/1.6/2 A); enables direct drive of mid-power CPU/server fans without external current amplification.
Switching frequency	Fixed 26 kHz - above audible range to suppress fan whine; eliminates need for external oscillator or frequency tuning components.
Hall sensor sensitivity	Operate point ±1–2 mT, release point ±1–2 mT - high-sensitivity embedded Hall cell enables reliable rotor position detection in low-field fan magnet environments.
Thermal shutdown threshold	150°C with 25°C hysteresis - ensures safe operation under sustained load; automatic recovery avoids manual reset after cooling.
PWM input frequency range	2 kHz to 100 kHz - compatible with standard system PWM controllers (e.g., Intel 4-pin PWM fans); internal pull-up simplifies interface.
Package type	TSOT23-6-RSL - reverse-side lead variant with 0.65 mm pitch; optimized for space-constrained PCB layouts in server blade and notebook thermal modules.

Pinout & Package

MP6650GJSR-0000-Z is housed in a TSOT23-6-RSL package - a reverse-side lead variant of the TSOT23-6 family with pin 1 located at upper-left when reading top marking left-to-right (BGK + year + lot code). The package features 0.65 mm lead pitch, 1.0 mm height, and JEDEC MO-193 compliance.

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 with RVP	Accepts 3.3–18 V; internal reverse-voltage protection disables IC if polarity inverted - eliminates need for external series diode.
3 FG/RD	Open-drain status output	Configurable as tachometer (FG) or rotor lock fault (RD); requires external pull-up; outputs pulse train at 1× or 0.5× Hall frequency.
4 PWM	Speed control input	Accepts 2–100 kHz PWM; internal 41–50 kΩ pull-up enables direct MCU GPIO connection without external resistor.
5 OUT2	Half-bridge low-side output	Connects to motor winding midpoint; switches with complementary timing to OUT1; shares current path with HS-FET during dead-time.
6 OUT1	Half-bridge high-side output	Drives motor winding; integrates 550 mΩ HS-FET (typ); soft-switching reduces EMI and mechanical vibration during commutation.

Key Features

Feature	Design Value
Integrated Hall sensor	Embedded high-sensitivity Hall cell (BOP ±1–2 mT) eliminates external sensor placement, calibration, and routing complexity in fan modules.
Soft on/off phase transition	Gradual duty ramp (22.5°–45° angle vs. output duty) reduces torque ripple and audible noise - critical for quiet computing environments.
Configurable speed curve	14H register sets PWM starting duty (e.g., 12.5%); 00h–08h lookup table defines full-speed mapping - enables precise thermal management response.
Automatic phase-lock detection	Synchronizes switching to winding BEMF and current zero-crossing without external timing components - improves efficiency and stability across speed/load.
Full protection suite	OVP (19.2 V), UVLO (3.25 V), RD detection (0.6 s timeout), thermal shutdown (150°C), and RVP - reduces system-level fault-handling firmware burden.

Applications

CPU Fan Control

Server Rack Cooling

Use Scenario: Regulating airflow over multi-core processors in desktop PCs and workstations based on thermal sensor feedback.

IC Role / Device Role / Timing Role: Single-phase BLDC driver with integrated Hall sensor and FG tachometer output; provides closed-loop speed control via PWM input and real-time RPM feedback.

Use Value: Soft switching and 26 kHz fixed frequency reduce acoustic noise below 25 dB(A); integrated RVP prevents damage during board-level power sequencing errors.

Use Scenario: Driving redundant 40–60 mm fans in 1U/2U server chassis where reliability, thermal headroom, and EMI compliance are mandatory.

IC Role / Device Role / Timing Role: Motor controller with rotor lock detection (RD) and automatic retry (3.6 s default); FG/RD pin signals both speed and fault state to BMC via single wire.

Use Value: Configurable current limit (2 A max) and thermal shutdown (150°C) ensure continuous operation under dust-clogged or high-ambient conditions without fan stall-induced CPU throttling.

Network Switch Thermal Management

Industrial Embedded Fan Modules

Use Scenario: Maintaining stable temperature in Layer 3 switches with ASICs generating >15 W heat in confined airflow paths.

IC Role / Device Role / Timing Role: Hall-based commutation controller with programmable speed curve (via OTP registers); supports dynamic fan ramp-up/down during traffic load changes.

Use Value: Input OVP/UVLO and reverse-voltage protection tolerate unstable PoE-derived 12 V rails; minimal external components (1 μF CIN, 2 Ω snubber) reduce BOM count and footprint.

Use Scenario: Fan control in sealed industrial PCs deployed in factory automation systems with wide ambient temperature swings (-40°C to +85°C).

IC Role / Device Role / Timing Role: Integrated motor driver with extended junction temp range (-40°C to +125°C); FG output remains valid down to -40°C for cold-start monitoring.

Use Value: TSOT23-6-RSL package enables automated SMT assembly; RoHS/lead-free/halogen-free compliance meets global industrial safety standards.

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
MP6650GJL-0000-Z	Same die, TSOT23-6-L (normal-side lead) package; pin 1 at lower-left; identical electrical specs and register map.	Requires different PCB land pattern and pick-and-place orientation; no functional difference in fan control performance.	Select when legacy layout uses TSOT23-6-L footprint or when sourcing constraints favor L-variant stock.
MP6650GJR-0000-Z	Same die, TSOT23-6-R (reverse) package; pin 1 at upper-left but non-slotted lead form; differs from RSL in lead geometry and mold compound.	Compatible with RSL land pattern only if lead coplanarity and solder paste volume are re-validated; not drop-in for RSL.	Choose only if RSL is unavailable and board-level requalification for mechanical fit and thermal performance is feasible.

Compared with MP6650GJSR-0000-Z, the GJL variant offers identical functionality in a mechanically distinct but electrically interchangeable package, while the GJR variant requires careful mechanical validation due to non-slotted leads - making GJSR the preferred choice for new designs targeting optimal manufacturability and thermal reliability.

Availability

MP6650GJSR-0000-Z is available at Aetrix Electronics and suitable for CPU fan control, server rack cooling, network switch thermal management, and industrial embedded fan modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MP6650GJSR-0000-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 drivers, with design centers in the US, China, and Taiwan.

The MP6650 belongs to MPS's Phase Fan Driver product line, engineered specifically for intelligent, low-noise, and highly protected single-phase BLDC fan control in computing and datacenter thermal systems.

FAQ

What is the function of the FG/RD pin?

The FG/RD pin is an open-drain output that serves dual roles: when configured via register FGRD[1:0]=00, it outputs a tachometer signal (FG) at full or half Hall frequency for RPM monitoring; when set to 11, it asserts a low-active rotor deadlock (RD) fault signal after 0.6 s of no Hall edge detection. External pull-up is required for both modes.

How is the output current limit configured?

The output current limit is set by the SUCL[1:0] bits in register 0x0A: 00 = 0.7 A, 01 = 1.1 A, 10 = 1.6 A (default), 11 = 2 A. This limit triggers overload current protection during normal switching, turning off the HS-FET immediately upon exceeding threshold after 1.5 µs blanking time.

Does MP6650GJSR-0000-Z require external MOSFETs?

No. The MP6650GJSR-0000-Z integrates a complete N-channel half-bridge: high-side MOSFET (R_DS(on) = 550 mΩ typ) and low-side MOSFET (R_DS(on) = 320 mΩ typ), totaling 740 mΩ. No external power switches are needed for driving fans up to 2 A continuous current.

What is the purpose of the soft on/off phase transition?

The soft on/off transition gradually ramps output duty over 22.5°–45° (depending on target duty) to reduce torque ripple and mechanical vibration. This minimizes audible noise and extends bearing life in fan applications - especially critical in quiet PC and workstation environments.

Can the MP6650GJSR-0000-Z operate below 3.3 V?

No. The absolute minimum operating supply voltage is 3.3 V, defined by the UVLO rising threshold (3.25 V typical). Below this, the device remains disabled. Operation at 3.0 V or lower is outside specification and may result in erratic Hall sensing or incomplete MOSFET turn-on.

How is the TSOT23-6-RSL package different from TSOT23-6-R?

The TSOT23-6-RSL package features slotted leads for improved solder joint reliability and coplanarity control, whereas TSOT23-6-R has non-slotted leads. Both share pin 1 at upper-left, but RSL is optimized for high-yield automated assembly and thermal performance - confirmed in MPS package drawings Rev. 1.0.

Is register programming required for basic operation?

No. The MP6650GJSR-0000-Z operates out-of-box with default OTP register values: 1.6 A current limit (SUCL=10), FG mode (FGRD=00), soft switching enabled (SOFTEN=1), and 12.5% PWM starting duty (DUTY_STARTING=0x20). Register writes are optional for advanced tuning.

MP6650GJSR-0000-Z Specifications

Product attributes: Attribute value

Manufacturer:: Monolithic Power Systems Inc.

Series:: -

Package/Case:: SOT-23-6 Thin, Flat Leads

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-RSL

MP6650GJSR-0000-Z FAQ

1.How can I place an order for MP6650GJSR-0000-Z through Aetrix?

Please submit a Request for Quotation (RFQ) for MP6650GJSR-0000-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 MP6650GJSR-0000-Z reliable?

The price and inventory of MP6650GJSR-0000-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP6650GJSR-0000-Z is usually 5 days.

3.What payment methods are accepted for MP6650GJSR-0000-Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP6650GJSR-0000-Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MP6650GJSR-0000-Z?

MP6650GJSR-0000-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MP6650GJSR-0000-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 MP6650GJSR-0000-Z?

For technical support, including MP6650GJSR-0000-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP6650GJSR-0000-Z requirements.

6.How does Aetrix verify that MP6650GJSR-0000-Z is sourced from the original manufacturer or authorized distributors?

All MP6650GJSR-0000-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 MP6650GJSR-0000-Z meets industry standards.

7.What is the process for return or replacement of MP6650GJSR-0000-Z?

All MP6650GJSR-0000-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP6650GJSR-0000-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 MP6650GJSR-0000-Z part is unused and in its original packaging.

Return procedure for MP6650GJSR-0000-Z:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…