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

Diodes Incorporated ZXBM2004Q16TC

Name: ZXBM2004Q16TC
Brand: Diodes Incorporated
SKU: ZXBM2004Q16TC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXBM2004Q16TC

Manufacturer:: Diodes Incorporated

Category:: Motor Drivers, Controllers

Package:: 16-SSOP (0.154", 3.90mm Width)

Datasheet:: ZXBM2004Q16TC.pdf

Description:: IC MOTOR DRIVER 4.7V-18V 16QSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ZXBM2004Q16TC from Diodes Incorporated is a two-phase BLDC motor pre-driver IC designed for variable-speed fan and blower control in 4.7–18 V systems. It integrates Hall amplifier inputs, rotor lock protection with auto-restart, open-drain FG tachometer output, and dual low-side Darlington emitter-follower drive outputs (Ph1/Ph2) delivering 80 mA source / 16 mA sink current. Used in desktop PC cooling, automotive instrument cluster fans, and HVAC blowers.

For engineers reviewing the ZXBM2004Q16TC datasheet, ZXBM2004Q16TC pinout, ZXBM2004Q16TC application, or ZXBM2004Q16TC equivalent, key selection criteria include SPD voltage-controlled PWM speed range (1–3 V = 100%–0%), CPWM-settable 24 kHz typical PWM frequency, SMIN-configurable minimum speed, CLCK-timed rotor lock detection/restart, and dual-package availability (QSOP-16/U-QFN3030-16).

Technical Context

The ZXBM2004Q16TC implements sensor-based commutation using differential Hall inputs (H+/H−) with internal amplifier (±7 mV offset, 400–700 nA bias), enabling direct connection to 3-pin or 4-pin Hall sensors. Its speed control loop accepts analog voltage (1–3 V), thermistor network, or externally converted PWM on the SPD pin, with SMIN clamping to enforce minimum speed.

Rotor lock detection uses CLCK capacitor timing to trigger RD open-collector output and disable Ph1/Ph2 after T_LOCK; auto-restart cycles (T_OFF/T_ON) continue until rotation resumes. The FG output replicates Hall sensor magnetic transition frequency for tach feedback, while Ph1/Ph2 drive external bipolar or MOSFET switches via V+OP-configurable supply.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.7 V to 18 V - supports direct connection to 5–12 V fan supplies; extended operation possible with external regulator
PWM Frequency	24 kHz typical (CPWM = 0.1 nF) - sets switching frequency for EMI control and audible noise reduction
Speed Control Range	1 V to 3 V on SPD pin = 100% to 0% PWM duty - enables linear analog speed regulation
Output Drive Capability	Ph1/Ph2: 80 mA source / 16 mA sink - sufficient to directly drive base/gate of external bipolar transistors or MOSFETs
Hall Amplifier Input Offset	±7 mV - ensures accurate rotor position detection with low-voltage Hall signals
FG & RD Output Type	Open-drain - requires external pull-up resistor (e.g., 10 kΩ) for tachometer and lock status signaling
Operating Temperature	−40 °C to +110 °C - qualified for industrial and automotive under-hood environments

Pinout & Package

Package: QSOP-16 - 16-pin plastic quad small outline package, 5.0 mm × 6.2 mm body, 0.635 mm pitch, surface-mount, RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
VCC	IC power supply input	Supplies internal circuitry; must be decoupled near pin; max 20 V absolute rating
SPD	Speed control analog input	Voltage between 1 V (full speed) and 3 V (stop); also functions as enable/disable control
H+, H−	Differential Hall sensor inputs	Accept raw Hall output (4-pin) or buffered signal (3-pin); common-mode range 0.5×VCC ±1.5 V
Ph1, Ph2	Low-side phase drive outputs	Darlington emitter-follower with active pull-down; drive external switch bases/gates
FG	Frequency generator output	Open-drain tach signal synchronized to magnetic pole transitions; used for RPM monitoring
RD	Rotor lock detect output	Open-drain active-low flag; pulled high externally when rotor stalls
SMIN	Minimum speed setting input	Voltage divider from ThRef sets lower speed limit; prevents SPD from commanding below threshold
CPWM	PWM frequency timing input	Capacitor-to-ground sets oscillator frequency; 0.1 nF → 24 kHz typical
CLCK	Lock detect timing input	Capacitor-to-ground sets T_LOCK, T_OFF, and T_ON timing for auto-restart cycle
ThRef	3 V reference output	Nominal 2.96 V ±0.12 V at 100 µA; powers SMIN divider and external circuits
V+OP	Phase output supply	Configurable supply for Ph1/Ph2 drivers; connected to VCC (MOSFET) or via resistor (bipolar)
GND	Power return	Common ground reference for all analog and digital functions; must be low-impedance

Key Features

Feature	Design Value
Integrated Hall amplifier	Enables direct interface to unbuffered or buffered Hall sensors without external op-amps
Rotor lock protection with auto-restart	CLCK-programmable detection timeout and recovery cycle eliminates manual reset in stalled-fan scenarios
Programmable PWM frequency	CPWM capacitor selection allows EMI optimization across 10–100 kHz range without changing IC
Configurable minimum speed (SMIN)	Prevents fan stall at low temperatures by enforcing operational floor independent of SPD input
Open-drain FG and RD outputs	Facilitates level-shifting and wired-OR interfacing with microcontrollers or monitoring ICs

Applications

Desktop PC & Server Cooling

Automotive Instrument Cluster Fans

Use Scenario: Thermal management of CPU/GPU heatsinks and server chassis airflow.

IC Role / Device Role / Timing Role: Pre-driver controlling two-phase BLDC fan via thermistor-derived SPD voltage; FG provides closed-loop RPM feedback to host controller.

Use Value: Enables silent, efficient cooling with automatic speed ramping and stall recovery-critical for reliability in unattended data centers.

Use Scenario: Forced-air cooling of analog/digital instrument panel electronics in vehicles.

IC Role / Device Role / Timing Role: Motor controller interfacing directly to Hall sensor and driving external NPN transistors; RD alerts ECU of fan failure.

Use Value: −40 °C to +110 °C operation and rotor lock detection meet automotive AEC-Q100 functional safety expectations for cabin climate subsystems.

Central Heating Blowers

Industrial Extractor Fans

Use Scenario: Variable-speed air circulation in residential/commercial HVAC duct systems.

IC Role / Device Role / Timing Role: Speed-regulated pre-driver accepting 0–10 V or PWM-modulated SPD input; ThRef powers external SMIN network.

Use Value: Analog speed control simplifies integration with legacy building management systems lacking digital interfaces.

Use Scenario: Dust- and moisture-prone ventilation in manufacturing enclosures and cleanrooms.

IC Role / Device Role / Timing Role: Robust motor driver with FG tach output for preventive maintenance logging and RD fault reporting.

Use Value: Auto-restart capability maintains airflow during transient obstructions (e.g., filter clogging), reducing downtime.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ALLEGRO A3977SLDTR-T	Microstepping stepper driver; lacks Hall amplifier, FG output, and rotor lock logic	Designed for precision positioning, not continuous BLDC fan control	Select only if replacing stepper-based airflow systems-not drop-in for ZXBM2004's sensor-commutated BLDC topology
TI DRV10983ZPWPR	Integrated gate driver + MCU; no external Hall interface; requires firmware configuration	Targeted at cost-sensitive, fixed-function fans with no need for analog SPD/SMIN tuning	Choose when programmability and BOM reduction outweigh need for analog speed control flexibility

Compared with A3977SLDTR-T and DRV10983ZPWPR, the ZXBM2004Q16TC uniquely combines analog SPD/SMIN control, integrated Hall amplification, and hardware-based rotor lock recovery-making it optimal for industrial and automotive fans requiring robust, parameter-tunable, sensor-based BLDC operation without embedded software.

Availability

ZXBM2004Q16TC is available at Aetrix Electronics and suitable for desktop PC cooling, automotive instrument cluster fans, and central heating blowers requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for ZXBM2004Q16TC 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and motor control solutions for industrial, computing, and automotive markets.

The ZXBM2004 belongs to Diodes' motor control pre-driver product line, engineered specifically for cost-effective, high-reliability variable-speed BLDC fan and blower applications where analog interface simplicity and hardware-level fault protection are critical.

FAQ

What is the function of the V+OP pin?

V+OP supplies power to the Ph1 and Ph2 output drivers. For bipolar transistor switches, it connects to VCC through a current-limiting resistor; for MOSFETs, it ties directly to VCC. This pin decouples phase drive supply from internal logic rails, improving noise immunity and thermal performance during high-current switching.

Can the ZXBM2004Q16TC drive MOSFETs directly?

Yes-the Ph1 and Ph2 outputs provide up to 80 mA source current and 16 mA sink current, sufficient to charge/discharge gate capacitance of small-to-medium power MOSFETs (e.g., ZXMN6A09G, R_DS(on) = 40 mΩ). Gate drive strength is enhanced by the Darlington emitter-follower topology with active pull-down for fast turn-off.

How does rotor lock detection work without external microcontroller intervention?

Rotor lock is detected by monitoring Hall sensor transitions via the internal locked-rotor detector. If no magnetic edge is sensed for time T_LOCK (set by CLCK capacitor), RD goes high and Ph1/Ph2 disable. After T_OFF, the device re-enables drive for T_ON-repeating until motion resumes. All timing and restart logic is fully hardware-based.

Is the ThRef pin capable of sinking current?

No-ThRef is a dedicated 2.96 V reference output designed only to source up to 1 mA. It cannot sink current. External circuits (e.g., SMIN voltage divider) must be configured so that ThRef supplies current only, avoiding reverse current flow which could destabilize the reference or exceed its 1 mA limit.

ZXBM2004Q16TC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 16-SSOP (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Motor Type - Stepper:: -

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

Function:: Controller - Commutation, Direction Management

Output Configuration:: Pre-Driver - Half Bridge (2)

Interface:: PWM

Technology:: -

Step Resolution:: -

Applications:: Fan Controller

Current - Output:: -

Voltage - Supply:: 4.7V ~ 18V

Voltage - Load:: -

Operating Temperature:: -40°C ~ 110°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QSOP

ZXBM2004Q16TC FAQ

1.How can I place an order for ZXBM2004Q16TC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXBM2004Q16TC 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 ZXBM2004Q16TC reliable?

The price and inventory of ZXBM2004Q16TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXBM2004Q16TC is usually 5 days.

3.What payment methods are accepted for ZXBM2004Q16TC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXBM2004Q16TC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXBM2004Q16TC?

ZXBM2004Q16TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXBM2004Q16TC 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 ZXBM2004Q16TC?

For technical support, including ZXBM2004Q16TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXBM2004Q16TC requirements.

6.How does Aetrix verify that ZXBM2004Q16TC is sourced from the original manufacturer or authorized distributors?

All ZXBM2004Q16TC 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 ZXBM2004Q16TC meets industry standards.

7.What is the process for return or replacement of ZXBM2004Q16TC?

All ZXBM2004Q16TC units undergo pre-shipment inspection (PSI). If there is an issue with ZXBM2004Q16TC, 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 ZXBM2004Q16TC part is unused and in its original packaging.

Return procedure for ZXBM2004Q16TC:

1.Submit a request within 90 days.

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

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