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

Diodes Incorporated ZXBM2003X10TA

Name: ZXBM2003X10TA
Brand: Diodes Incorporated
SKU: ZXBM2003X10TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXBM2003X10TA

Manufacturer:: Diodes Incorporated

Category:: Motor Drivers, Controllers

Package:: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)

Datasheet:: ZXBM2003X10TA.pdf

Description:: IC MOTOR DRIVER 4.5V-18V 10MSOP

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Product details

Overview

ZXBM2003X10TA from Zetex Semiconductors is a 2-phase DC brushless motor pre-driver IC designed for fan and blower speed control in PC, instrumentation, and HVAC systems. It delivers PWM-controlled phase drive outputs (PH1/PH2), integrated Hall amplifier input (H+/H−), FG-speed pulse output, and operates from 4.5–18 V supply with up to 80 mA output current per phase.

For engineers reviewing the ZXBM2003X10TA datasheet, ZXBM2003X10TA pinout, ZXBM2003X10TA application, or ZXBM2003X10TA equivalent, key selection criteria include its FG-only output mode (vs. combined LOCK/FG in ZXBM2001), 24–34 kHz programmable PWM frequency via CPWM capacitor, 1.0–2.0 V SPD voltage control range, and MSOP-10 package compatibility with thermal speed regulation using NTC thermistors.

Technical Context

The ZXBM2003 implements a two-phase commutation controller that interprets differential Hall sensor signals (H+/H−) to sequence PH1 and PH2 open-emitter Darlington outputs. Its internal Hall amplifier supports both 4-pin "naked" and 3-pin buffered Hall sensors, with common-mode input range of 0.5 V to VCC−1.5 V and ±7 mV offset.

Speed regulation is implemented via SPD pin voltage (1–2 V = 100%–0% PWM duty), externally applied PWM on CPWM pin (TTL/CMOS compatible), or thermistor-based analog control. The FG output provides a buffered, inverted Hall signal at exactly twice motor rotational frequency - distinct from ZXBM2001's dual-function LOCK/FG and ZXBM2002's lock-only output.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5–18 V - Directly powers fan motors rated ≤12 V; external regulator required above 18 V (e.g., zener clamp).
PH1/PH2 Output Current	−80 mA - Sinks up to 80 mA per phase to drive bipolar transistor bases or MOSFET gates in half-bridge configurations.
FG Output Type	Buffered, inverted Hall signal - Provides clean, logic-level speed feedback at exactly 2× motor RPM; no lock-detection function.
PWM Frequency Range	24–34 kHz - Set by CPWM capacitor (e.g., 150 pF → 24 kHz); avoids audible noise while enabling efficient switching.
SPD Control Range	1–2 V input - Maps linearly to 100%–0% PWM duty; 1.5 V default (50%) via internal resistor divider; supports NTC thermistor biasing.
Hall Input Sensitivity	40 mV differential p-p - Accepts low-amplitude Hall sensor outputs without external amplification.
Operating Temperature	−40 to +85 °C - Qualified for industrial and automotive cabin climate control environments.

Pinout & Package

Package: MSOP-10 (JEDEC MO-187 BA), 3.0 mm × 4.9 mm body, 0.5 mm pitch, exposed pad optional for thermal relief.

Pin/Terminal	Circuit Role	Design Meaning
1. VCC	Positive supply input	Accepts 4.5–18 V; powers internal circuitry and Hall amplifier; requires local 100 nF decoupling.
2. H+	Hall sensor positive input	Differential input for "naked" Hall sensors; referenced to H−; supports 40 mV p-p minimum signal swing.
3. H−	Hall sensor negative input	Differential reference for H+; for buffered Hall sensors, biased to VCC/2 via external divider.
4. SPD	Speed control voltage input	1–2 V analog input sets PWM duty; internal 52.5k/19.5k divider fixes 1.5 V idle point; accepts NTC thermistor directly.
5. GND	Power and signal ground	Common return for VCC, Hall inputs, SPD, FG, and phase drivers; must be low-impedance path to motor ground.
6. FG	Frequency generator output	Active-low buffered, inverted Hall signal; frequency = 2× motor RPM; open-drain requiring external pull-up (e.g., 10 kΩ to VCC).
7. CLCK	Lock detection timing capacitor	Connects to timing capacitor (e.g., 1 µF) to set retry interval during rotor stall; not used for speed control in ZXBM2003.
8. CPWM	PWM frequency setting / external PWM input	Capacitor sets internal oscillator (24–34 kHz); alternatively accepts TTL/CMOS PWM signal (VOL <1 V, VOH >2 V) when capacitor omitted.
9. PH2	Phase 2 driver output	Open-emitter Darlington output; sinks up to 80 mA; drives base/gate of external high-side switch (e.g., FZT851, ZXMN6A09DN82).
10. PH1	Phase 1 driver output	Identical to PH2; complements PH2 to enable 2-phase commutation; both outputs sequenced based on Hall state transitions.

Key Features

Feature	Design Value
Integrated Hall amplifier	Supports direct connection to low-output Hall sensors (40 mV p-p min) with ±7 mV offset and 0.5–VCC−1.5 V common-mode range.
FG-only speed feedback	Dedicated buffered, inverted Hall output (pin 6) delivering precise 2×RPM timing signal - eliminates ambiguity of shared LOCK/FG pins.
Multi-mode speed control	Enables analog voltage (SPD), thermistor (NTC to SPD), or external digital PWM (CPWM pin) - all simultaneously supported in same hardware layout.
Programmable PWM frequency	24–34 kHz range set by CPWM capacitor value (e.g., 100 pF → 34 kHz); avoids acoustic noise while maintaining MOSFET/bipolar switching efficiency.
Robust phase drive outputs	PH1/PH2 deliver −80 mA sink current with V_OH ≥ VCC−2.2 V, enabling direct drive of bipolar transistors or logic-level MOSFETs without level shifters.

Applications

PC Cooling Fan Control

Instrumentation Blower Regulation

Use Scenario: Regulating airflow in server chassis and desktop CPU coolers based on thermal sensor feedback.

IC Role / Device Role / Timing Role: Pre-driver sequencing PH1/PH2 outputs in sync with Hall rotor position to commutate 2-phase BLDC fan motor; FG pin feeds tachometer input to system controller.

Use Value: Enables closed-loop thermal management with 24–34 kHz PWM to eliminate audible whine and support fan speeds from 1,200–6,000 RPM.

Use Scenario: Maintaining stable airflow across precision gas sensors and optical enclosures in lab-grade analyzers.

IC Role / Device Role / Timing Role: Translating analog temperature voltage (via SPD pin) into proportional fan speed; FG output verifies continuous rotation for safety interlock.

Use Value: Delivers ±2.5% speed linearity with 100 kΩ NTC thermistor, ensuring consistent sample conditioning without manual calibration.

Automotive HVAC Blower

Central Heating Fan Module

Use Scenario: Driving cabin air blower motors in passenger vehicles where EMI and thermal reliability are critical.

IC Role / Device Role / Timing Role: Providing robust Hall-based commutation and FG feedback under −40 to +85 °C ambient; CPWM accepts vehicle CAN-transceiver-derived PWM commands.

Use Value: Withstands load dump transients via external zener-regulated VCC and supports fail-safe operation through FG monitoring - no lock-detection needed in this variant.

Use Scenario: Controlling multi-speed furnace blowers in residential heating systems using wall-mounted thermostat voltage signals.

IC Role / Device Role / Timing Role: Converting 0–10 V HVAC control signal (attenuated to 1–2 V range) into variable-speed BLDC drive; FG confirms operational status to boiler controller.

Use Value: Eliminates brushed motor wear and noise; SPD pin's internal 1.5 V bias enables simple 2-resistor scaling from 0–10 V sources without op-amps.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-phase BLDC fan pre-driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXBM2001X10TA	Combines LOCK and FG on pin 6; includes automatic rotor lock recovery and CLCK-based retry timing.	Required where stall detection and auto-restart are mandatory (e.g., unattended equipment cooling).	Select ZXBM2001 if lock condition monitoring and safe retry behavior are needed; ZXBM2003 omits lock logic entirely.
ALLEGRO A3977SLDTR-T	Microstepping stepper driver with integrated FETs; 35 V max supply; SPI interface; no Hall amp or FG output.	Targets precision positioning, not fan speed regulation; lacks analog SPD input and FG tachometer capability.	Not a functional substitute: A3977 is a full stepper driver IC; ZXBM2003 is a Hall-commutated BLDC pre-driver with dedicated fan control features.

Compared with ZXBM2001, ZXBM2003 removes lock-detection circuitry to simplify design where only speed feedback is required; unlike A3977, it provides native Hall amplification, FG output, and analog/thermistor/PWM speed control - making it purpose-built for cost-sensitive, high-volume fan modules.

Availability

ZXBM2003X10TA is available at Aetrix Electronics and suitable for PC cooling, instrumentation blower, and HVAC fan applications requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging in MSOP-10 tape-and-reel format (1,000 units/reel).

Supply support for ZXBM2003X10TA 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

Zetex Semiconductors (now part of Diodes Incorporated) is a UK-based analog and power semiconductor specialist focused on high-performance, application-optimized ICs for industrial, computing, and automotive markets.

The ZXBM200x series was developed specifically for cost-effective, reliable 2-phase BLDC fan and blower control - emphasizing integrated Hall sensing, flexible speed modulation, and robust phase drive in compact MSOP packages.

FAQ

What is the function of the CLCK pin on ZXBM2003X10TA?

The CLCK pin on ZXBM2003X10TA connects to an external timing capacitor to configure locked-rotor retry intervals. However, since ZXBM2003 implements FG-only functionality (no lock detection), this pin is unused in standard operation and may be left unconnected or tied to GND. It retains backward pin compatibility with ZXBM2001/2002 but serves no active role in ZXBM2003.

Can ZXBM2003X10TA drive MOSFETs directly without external level shifters?

Yes - PH1 and PH2 are open-emitter Darlington outputs capable of sinking up to 80 mA with V_OH ≥ VCC−2.2 V. When paired with logic-level N-channel MOSFETs (e.g., ZXMN6A09DN82), they provide sufficient gate drive current and voltage margin to fully enhance the device without additional level-shifting circuitry, simplifying PCB layout and BOM count.

How does the SPD pin support thermistor-based speed control?

The SPD pin features an internal 52.5 kΩ resistor to GND and 19.5 kΩ resistor to a 2.0 V reference, forming a Thevenin-equivalent 1.5 V bias point. A 100 kΩ NTC thermistor from SPD to GND shifts this voltage from ~1.5 V (50% speed) to ~1.0 V (100% speed) between 25°C and 50°C, achieving ±2.5% linearity without external op-amps or calibration.

Is the FG output compatible with standard microcontroller tachometer inputs?

Yes - the FG pin is a buffered, active-low, open-drain output requiring only a pull-up resistor (e.g., 10 kΩ to VCC). Its logic-compatible voltage levels (V_OL ≤ 0.5 V at 5 mA) and precise 2×RPM frequency make it directly interfaced to GPIO capture peripherals or dedicated tachometer ICs without signal conditioning.

ZXBM2003X10TA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 10-TFSOP, 10-MSOP (0.118", 3.00mm 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 - High Side (2)

Interface:: PWM

Technology:: -

Step Resolution:: -

Applications:: Fan Controller

Current - Output:: -

Voltage - Supply:: 4.5V ~ 18V

Voltage - Load:: -

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 10-MSOP

ZXBM2003X10TA FAQ

1.How can I place an order for ZXBM2003X10TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXBM2003X10TA 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 ZXBM2003X10TA reliable?

The price and inventory of ZXBM2003X10TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXBM2003X10TA is usually 5 days.

3.What payment methods are accepted for ZXBM2003X10TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXBM2003X10TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXBM2003X10TA?

ZXBM2003X10TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXBM2003X10TA 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 ZXBM2003X10TA?

For technical support, including ZXBM2003X10TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXBM2003X10TA requirements.

6.How does Aetrix verify that ZXBM2003X10TA is sourced from the original manufacturer or authorized distributors?

All ZXBM2003X10TA 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 ZXBM2003X10TA meets industry standards.

7.What is the process for return or replacement of ZXBM2003X10TA?

All ZXBM2003X10TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXBM2003X10TA, 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 ZXBM2003X10TA part is unused and in its original packaging.

Return procedure for ZXBM2003X10TA:

1.Submit a request within 90 days.

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

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