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

Texas Instruments UCC3626NG4

Name: UCC3626NG4
Brand: Texas Instruments
SKU: UCC3626NG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: UCC3626NG4

Manufacturer:: Texas Instruments

Category:: Motor Drivers, Controllers

Package:: 28-DIP (0.600", 15.24mm)

Datasheet:: UCC3626NG4.pdf

Description:: IC MOTOR DRIVER 11V-14.5V 28DIP

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Product details

Overview

UCC3626NG4 from Texas Instruments is a three-phase brushless DC motor controller IC supporting two- and four-quadrant operation, featuring integrated absolute-value current sensing (gain = 5 V/V), precision tachometer output (variable duty-cycle, frequency-proportional), and synchronized triangle oscillator (9–11 kHz typical). It decodes Hall sensor inputs (HALLA/B/C) to drive six gate outputs (AHI/ALOW/BHI/BLOW/CHI/CLOW) for external power stages in industrial motion control systems.

For engineers reviewing the UCC3626NG4 datasheet, UCC3626NG4 pinout, UCC3626NG4 application, or UCC3626NG4 equivalent, key selection criteria include its Hall-decoded commutation logic, QUAD-selectable PWM modulation mode (low-side only vs. full-bridge), ±200 mA output drive capability, and 0°C to 70°C operating temperature range - all critical for closed-loop speed/torque control in servo drives and precision actuators.

Technical Context

The UCC3626NG4 implements a Hall decoder with direction detection (DIR_IN/DIR_OUT), latched PWM comparator with programmable CT oscillator, and differential current-sense amplifier with absolute-value output (IOUT = |SNS_I − SNS_NI| × 5). Its oscillator supports external synchronization via SYNCH input and uses R_TACH/CT to set frequency (f_OSC ≈ 2.5/(R_TACH × C_TACH)).

Tachometer timing is independently configured using R_TACH and C_TACH to generate TACH_OUT pulses with on-time t_ON = R_TACH × C_TACH, enabling digital velocity feedback. The device provides COAST and BRAKE inputs for overvoltage clamping and active braking, with UVLO threshold at 10.5 V and hysteresis of 0.4 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Operating Temp	0°C to 70°C - defines commercial-grade use in non-automotive industrial environments
Oscillator Freq	9–11 kHz (typ) - sets base PWM switching rate for motor phase control
Current Sense Gain	5.00 V/V (±1.5%) - enables accurate reconstruction of bidirectional motor current for protection and loop closure
Output Drive	±200 mA per AHI/ALOW/BHI/BLOW/CHI/CLOW - sufficient to directly drive gate drivers like IR2110 without buffering
Tach Output	Variable duty-cycle square wave - frequency ∝ RPM, on-time programmable for digital or analog velocity feedback
UVLO Threshold	10.5 V start / 10.1 V release - prevents erratic operation during brown-out conditions
Supply Voltage	Up to 15 V - compatible with standard 12-V industrial bus supplies with margin

Pinout & Package

UCC3626NG4 is packaged in 28-pin PDIP (N) with through-hole mounting and 0.6-inch width. Pin layout matches industry-standard N-package footprint for drop-in replacement in legacy designs.

Pin/Terminal	Circuit Role	Design Meaning
GND (Pin 1)	Reference ground	Common return for all analog/digital functions; requires local 0.1 µF ceramic bypass
VREF (Pin 2)	5-V trimmed reference	2% accuracy, 5 mA max sink/source - used to bias Hall sensors and set OC_REF threshold
TACH_OUT (Pin 3)	Tachometer output	Open-drain variable-duty-cycle signal - directly interfaces with microcontroller timers or RC-filtered for analog feedback
R_TACH (Pin 4)	Tach programming resistor	Sets charge current for C_TACH; also programs oscillator current (I_OSC = 25/R_TACH µA)
C_TACH (Pin 5)	Tach timing capacitor	Defines TACH_OUT pulse width (t_ON = R_TACH × C_TACH); must connect directly to GND pin
CT (Pin 6)	Oscillator timing node	Triangle waveform node (2.5–7.5 V swing); connects to timing capacitor for PWM frequency setting
SYNCH (Pin 7)	External clock sync input	Positive-edge-triggered; requires parallel R_TACH when enabled - ensures system-level clock coherence
DIR_OUT (Pin 8)	Direction indicator	Logic-level output reflecting actual rotor rotation (CW/CCW) decoded from Hall inputs
SNS_NI (Pin 9)	Current sense inverting input	Differential input to internal 5× gain amplifier - connects to low-side current sense resistor
SNS_I (Pin 10)	Current sense noninverting input	Paired with SNS_NI; absolute-value output IOUT = 5 × \|SNS_I − SNS_NI\| supports four-quadrant current sensing
IOUT (Pin 11)	Current sense output	Analog representation of motor current magnitude - used for overcurrent protection and current-loop feedback
OC_REF (Pin 12)	Overcurrent threshold	Analog input setting trip point for internal comparator - referenced to VREF or external supply
PWM_I (Pin 13)	PWM comparator inverting input	Connects to error amplifier output in voltage-mode control or current feedback in current-mode control
PWM_NI (Pin 14)	PWM comparator noninverting input	Connects to CT oscillator ramp - determines duty cycle based on error signal crossing triangle waveform
VDD (Pin 15)	Power supply input	12-V nominal supply with UVLO; requires 0.1 µF ceramic bypass to GND
AHI (Pin 16)	Phase A high-side gate driver	Digital output controlling upper MOSFET/IGBT in phase A leg - active-high in normal commutation
ALOW (Pin 17)	Phase A low-side gate driver	Digital output controlling lower switch in phase A - modulated in two-quadrant mode; complementary in four-quadrant
BHI (Pin 18)	Phase B high-side gate driver	Same function as AHI for phase B - decoding follows Hall sequence per Table 1
BLOW (Pin 19)	Phase B low-side gate driver	Same function as ALOW for phase B - coordinated with DIR_IN and QUAD mode
CHI (Pin 20)	Phase C high-side gate driver	Same function as AHI for phase C - completes three-phase 120° commutation pattern
CLOW (Pin 21)	Phase C low-side gate driver	Same function as ALOW for phase C - enables full six-step BLDC control
DIR_IN (Pin 22)	Direction command input	Logic input selecting clockwise or counterclockwise sequencing of Hall decoder outputs
QUAD (Pin 23)	Quadrant select input	High = four-quadrant (full-bridge PWM); Low = two-quadrant (low-side PWM only) - reduces switching losses
BRAKE (Pin 24)	Brake command input	Active-high signal forcing all low-side outputs ON and high-side OFF - enables dynamic braking
COAST (Pin 25)	Coast command input	Hysteretic comparator input (>1.75 V disables outputs) - used for bus overvoltage clamping
HALLC (Pin 26)	Rotor position input C	One of three 120°-spaced Hall sensor inputs - internally pulled up to VREF; requires RC filtering
HALLB (Pin 27)	Rotor position input B	Second Hall input - decoding logic defined in Table 1; valid transitions determine DIR_OUT polarity
HALLA (Pin 28)	Rotor position input A	Third Hall input - forms complete commutation state with HALLB/HALLC; no simultaneous high/low states

Key Features

Feature	Design Value
Integrated Hall decoder	Directly interprets 120° Hall sensor patterns into six-phase commutation signals without external logic
QUAD-selectable PWM mode	Configurable low-side-only (QUAD=0) or full-bridge (QUAD=1) modulation - optimizes efficiency vs. control fidelity
Absolute-value current sensing	Reconstructs true motor current magnitude regardless of direction - essential for four-quadrant torque control
Synchronizable oscillator	SYNCH input allows precise alignment with master clock - eliminates beat frequencies in multi-axis systems
Dual-mode tachometer	Provides both digital (edge-counting) and analog (RC-filtered) velocity feedback paths from single TACH_OUT pin
Programmable UVLO	10.5 V startup with 0.4 V hysteresis - prevents unstable operation during power-up/down transients

Applications

Industrial Servo Drives	Automated Guided Vehicles (AGVs)
Use Scenario: Closed-loop position and velocity control of permanent magnet synchronous motors in CNC machines and packaging lines. IC Role / Device Role / Timing Role: UCC3626NG4 serves as the core commutation and current regulation engine, decoding Hall signals and generating synchronized PWM for external gate drivers. Use Value: Enables precise torque ripple reduction and smooth low-speed operation via four-quadrant current control and programmable tachometer timing.	Use Scenario: Motor control for autonomous mobile robots requiring bidirectional motion, regenerative braking, and obstacle-induced emergency stops. IC Role / Device Role / Timing Role: UCC3626NG4 manages real-time Hall-based commutation while executing BRAKE/COAST commands to halt motion within milliseconds. Use Value: Delivers fast, reliable braking response and directional reversal without current runaway - critical for safety-critical AGV navigation.
Medical Infusion Pumps	Lab Automation Equipment
Use Scenario: Ultra-precise fluid delivery using small BLDC motors where flow rate must be maintained across varying backpressure. IC Role / Device Role / Timing Role: UCC3626NG4 implements analog velocity loops with filtered TACH_OUT feedback and current-limited acceleration profiles. Use Value: Achieves <±0.5% speed regulation over load variations by combining tachometer accuracy and absolute-value current sensing for disturbance rejection.	Use Scenario: High-reliability motion control in DNA sequencers and robotic sample handlers requiring long-term stability and ESD-tolerant interfaces. IC Role / Device Role / Timing Role: UCC3626NG4 operates as the dedicated motor controller in modular motion modules, interfacing with host MCU via DIR_IN/DIR_OUT and PWM inputs. Use Value: Provides deterministic commutation timing and robust Hall input hysteresis (0.6–1.0 V) to reject noise in electromagnetically noisy lab environments.

Industrial Servo Drives

Automated Guided Vehicles (AGVs)

Use Scenario: Closed-loop position and velocity control of permanent magnet synchronous motors in CNC machines and packaging lines.

IC Role / Device Role / Timing Role: UCC3626NG4 serves as the core commutation and current regulation engine, decoding Hall signals and generating synchronized PWM for external gate drivers.

Use Value: Enables precise torque ripple reduction and smooth low-speed operation via four-quadrant current control and programmable tachometer timing.

Use Scenario: Motor control for autonomous mobile robots requiring bidirectional motion, regenerative braking, and obstacle-induced emergency stops.

IC Role / Device Role / Timing Role: UCC3626NG4 manages real-time Hall-based commutation while executing BRAKE/COAST commands to halt motion within milliseconds.

Use Value: Delivers fast, reliable braking response and directional reversal without current runaway - critical for safety-critical AGV navigation.

Medical Infusion Pumps

Lab Automation Equipment

Use Scenario: Ultra-precise fluid delivery using small BLDC motors where flow rate must be maintained across varying backpressure.

IC Role / Device Role / Timing Role: UCC3626NG4 implements analog velocity loops with filtered TACH_OUT feedback and current-limited acceleration profiles.

Use Value: Achieves <±0.5% speed regulation over load variations by combining tachometer accuracy and absolute-value current sensing for disturbance rejection.

Use Scenario: High-reliability motion control in DNA sequencers and robotic sample handlers requiring long-term stability and ESD-tolerant interfaces.

IC Role / Device Role / Timing Role: UCC3626NG4 operates as the dedicated motor controller in modular motion modules, interfacing with host MCU via DIR_IN/DIR_OUT and PWM inputs.

Use Value: Provides deterministic commutation timing and robust Hall input hysteresis (0.6–1.0 V) to reject noise in electromagnetically noisy lab environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar brushless DC motor controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
UCC2626N	Identical architecture and pinout; rated for –40°C to 85°C industrial temp range	Supports wider ambient operation in uncontrolled enclosures or outdoor equipment	Select UCC2626N when extended temperature range is required; UCC3626NG4 remains optimal for cost-sensitive commercial designs with 0°C to 70°C constraints
TMS320F28027	DSP-based solution with integrated ADC, PWM, and real-time control firmware - not pin-compatible	Enables field-oriented control (FOC) and adaptive tuning, unlike UCC3626NG4's fixed six-step commutation	Choose TMS320F28027 for advanced vector control needs; retain UCC3626NG4 for simpler, lower-BOM-cost Hall-commutated systems

Compared with UCC2626N, UCC3626NG4 trades extended temperature range for lower cost and qualification in commercial applications; compared with TMS320F28027, it offers deterministic analog timing and zero firmware overhead but lacks programmable control algorithms.

Availability

UCC3626NG4 is available at Aetrix Electronics and suitable for industrial servo drives, automated guided vehicles, medical infusion pumps, and lab automation equipment requiring stable component supply and long-term design continuity.

Supply support for UCC3626NG4 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with over 90 years of innovation history.

The UCC3626NG4 belongs to TI's legacy motor control IC portfolio, designed specifically for cost-effective, Hall-sensor-based three-phase BLDC commutation in commercial and light-industrial motion systems.

FAQ

What is the operating temperature range of the UCC3626NG4?

The UCC3626NG4 is specified for operation from 0°C to 70°C, making it suitable for commercial and light-industrial environments where ambient temperature is controlled. This differs from the UCC2626N variant, which supports –40°C to 85°C. The UCC3626NG4's thermal design assumes adequate PCB copper pour and avoids placement near heat-generating components.

How does the QUAD input affect PWM operation in the UCC3626NG4?

When QUAD = 0, the UCC3626NG4 modulates only the low-side outputs (ALOW/BLOW/CLOW), reducing switching losses in two-quadrant applications. When QUAD = 1, both high- and low-side outputs are PWM-controlled, enabling full four-quadrant torque reversal with controlled current decay. This configuration is selected via a logic-level input and does not require hardware changes.

Can the UCC3626NG4 interface directly with Hall-effect sensors?

Yes, the UCC3626NG4 accepts standard open-collector or three-state Hall-effect sensor outputs on HALLA, HALLB, and HALLC pins. These inputs feature built-in hysteresis (0.6–1.0 V) and should be externally pulled up to VREF (5 V) or another compatible supply. Passive RC filtering close to the pins is recommended to suppress EMI in noisy motor environments.

What is the purpose of the IOUT pin on the UCC3626NG4?

The IOUT pin delivers the amplified and absolute-valued motor current signal: IOUT = 5 × |SNS_I − SNS_NI|. This output serves dual purposes - providing pulse-by-pulse overcurrent protection when compared to OC_REF, and closing a current control loop in four-quadrant applications. Its rail-to-rail swing and low output impedance support direct connection to op-amps or ADCs.

Does the UCC3626NG4 support external oscillator synchronization?

Yes, the UCC3626NG4 includes a dedicated SYNCH input (Pin 7) that accepts positive-going edges from an external master clock. To enable synchronization, a resistor equal to R_TACH must be placed in parallel with CT. The internal oscillator automatically adjusts phase to align with the master signal, eliminating jitter in multi-controller systems.

UCC3626NG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 28-DIP (0.600", 15.24mm)

Packaging:: Tube

Product Status:: Obsolete

Motor Type - Stepper:: -

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

Function:: Controller - Commutation, Direction Management

Output Configuration:: Pre-Driver - Half Bridge (3)

Interface:: PWM

Technology:: -

Step Resolution:: -

Applications:: General Purpose

Current - Output:: -

Voltage - Supply:: 11V ~ 14.5V

Voltage - Load:: -

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 28-PDIP

UCC3626NG4 FAQ

1.How can I place an order for UCC3626NG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for UCC3626NG4 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 UCC3626NG4 reliable?

The price and inventory of UCC3626NG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCC3626NG4 is usually 5 days.

3.What payment methods are accepted for UCC3626NG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCC3626NG4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for UCC3626NG4?

UCC3626NG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your UCC3626NG4 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 UCC3626NG4?

For technical support, including UCC3626NG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCC3626NG4 requirements.

6.How does Aetrix verify that UCC3626NG4 is sourced from the original manufacturer or authorized distributors?

All UCC3626NG4 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 UCC3626NG4 meets industry standards.

7.What is the process for return or replacement of UCC3626NG4?

All UCC3626NG4 units undergo pre-shipment inspection (PSI). If there is an issue with UCC3626NG4, 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 UCC3626NG4 part is unused and in its original packaging.

Return procedure for UCC3626NG4:

1.Submit a request within 90 days.

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

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