My Inquiry
My Account
Allegro MicroSystems UDQ2916LBTR-T
- Part No.:
- UDQ2916LBTR-T
- Manufacturer:
- Allegro MicroSystems
- Category:
- Motor Drivers, Controllers
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
UDQ2916LBTR-T.pdf
- Description:
- IC MOTOR DRIVER BIPOLAR 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,259
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UDQ2916LBTR-T from Allegro MicroSystems is a dual full-bridge PWM motor driver IC designed for bipolar stepper motor control and bidirectional DC motor driving. It sustains 45 V motor supply, delivers 750 mA continuous output current per bridge, features internal PWM current regulation with user-selectable 0%/33%/67%/100% current limits, and operates across –40°C to +105°C ambient. It is used in industrial motion control systems requiring precise winding current control.
For engineers reviewing the UDQ2916LBTR-T datasheet, UDQ2916LBTR-T pinout, UDQ2916LBTR-T application, or UDQ2916LBTR-T equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives for legacy design continuity, and supply guidance for pre-end-of-life procurement.
Technical Context
The UDQ2916LBTR-T integrates two independent H-bridge drivers with internal clamp/flyback diodes, fixed off-time PWM current control (46 μs typical), and logic-level PHASE/I0/I1 inputs for direction and digital current scaling. Each bridge supports independent current sensing via external RS and reference voltage (VREF) programming.
It implements internal thermal shutdown at 170°C junction temperature, includes dead-time generation (~2 μs) to prevent shoot-through during PHASE transitions, and uses batwing SOICW package leads as heat-sinkable tabs-enabling 55°C/W junction-to-ambient thermal resistance on single-layer PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Motor Supply Voltage | 45 V max - supports 24 V and 36 V industrial motor rails without external clamping. |
| Continuous Output Current | 750 mA per bridge - enables direct drive of NEMA 17–23 stepper motors without external MOSFETs. |
| Output Saturation Voltage | <1.8 V total (source + sink) at 500 mA - reduces power loss to ≤0.9 W per bridge under typical load. |
| PWM Fixed Off-Time | 46 μs typical - ensures current chopping above audible range while maintaining stable regulation for inductances ≥3 mH. |
| Ambient Temperature Range | –40°C to +105°C - qualified for extended-temperature industrial and automotive under-hood auxiliary motor control. |
| Junction Thermal Shutdown | 170°C trip / 145°C recovery - protects against sustained overload or poor heatsinking without latch-up. |
| Logic Supply Voltage | 4.75–5.25 V - compatible with standard 5 V microcontroller I/O without level-shifting. |
Pinout & Package
UDQ2916LBTR-T is supplied in a 24-pin surface-mount wide SOIC (SOICW) package with two pairs of fused batwing leads (Pins 6/7 and 18/19) acting as thermally enhanced ground/power tabs. Package footprint follows JEDEC MS-013 AD; thermal resistance θJA = 55°C/W on single-layer board with 1 in² copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBB | Motor supply input | High-side power rail for both bridges; requires ≥47 μF local electrolytic decoupling. |
| VCC | Logic supply input | 5 V digital supply; powers internal logic, comparators, and monostables. |
| PHASE 1 / PHASE 2 | Bridge direction control | Digital inputs setting current polarity per winding; internally debounced with ~2 μs dead time. |
| I0 / I1 | Digital current limit select | Two-bit code selecting 0%, 33%, 67%, or 100% of VREF/10·RS peak current. |
| OUT1A / OUT1B / OUT2A / OUT2B | H-bridge outputs | Four high-current terminals; each pair drives one motor winding with integrated clamp diodes. |
| SENSE 1 / SENSE 2 | Current sense inputs | Low-impedance inputs monitoring voltage across external RS; referenced to E1/E2 emitters. |
| E1 / E2 | Emitter return | Separate emitter pins per bridge-critical for accurate current sensing by avoiding shared ground IR drop. |
| GND (Pins 1–4, 12–13) | Logic and thermal ground | Multiple low-inductance ground connections; batwing leads (6/7/18/19) serve as primary thermal paths. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent PWM bridges | Enables simultaneous, asynchronous control of two stepper phases or two DC motors with separate current regulation. |
| Internal clamp and flyback diodes | Eliminates need for 4 external fast-recovery diodes per bridge-reduces BOM count and layout area. |
| User-programmable current limit | VREF + RS selection sets absolute peak current; I0/I1 bits allow dynamic torque scaling in microstepping sequences. |
| Batwing SOICW thermal design | Fused lead tabs conduct heat directly to PCB copper; achieves 20–30% better power dissipation vs. standard SOIC. |
| No special power-up sequencing | Operates safely with VBB and VCC applied in any order-simplifies power rail design in multi-rail systems. |
Applications
| Industrial Stepper Positioning | Automotive HVAC Actuators |
|---|---|
|
Use Scenario: Precision open-loop positioning of linear actuators in CNC tool changers and packaging machinery. IC Role / Device Role / Timing Role: Dual full-bridge driver executing half-step sequences with digitally switched current levels (100% on single-phase, 67% on dual-phase) for constant torque. Use Value: Eliminates external current-sense amplifiers and discrete H-bridges-reducing component count by ≥12 parts per axis while maintaining ±0.5° step accuracy. |
Use Scenario: Bidirectional damper control in vehicle climate systems using 12 V DC motors. IC Role / Device Role / Timing Role: Motor driver with thermal shutdown and flyback protection handling frequent direction reversals and stall conditions. Use Value: Withstands 45 V load dump transients and operates reliably at –40°C cold start-meeting ISO 16750-2 requirements without external TVS. |
| Medical Infusion Pumps | Print Head Carriage Control |
|
Use Scenario: Low-noise microstepping of peristaltic pump motors in portable infusion devices. IC Role / Device Role / Timing Role: PWM current controller with adjustable off-time (via RT/CT) enabling <35 μs switching to suppress audible noise below 20 kHz. Use Value: Fixed off-time architecture avoids variable-frequency jitter-ensuring consistent fluid delivery rate and eliminating acoustic interference with sensitive sensors. |
Use Scenario: High-speed bidirectional movement of inkjet print heads across A4 paper width. IC Role / Device Role / Timing Role: Dual H-bridge delivering 750 mA peak to low-inductance voice-coil motors with fast current decay via I0/I1=HH disable mode. Use Value: Internal 2 μs dead time and fast-decay path reduce settling time to <1.2 ms-supporting ≥30 ppm print throughput without mechanical resonance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual full-bridge motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| A4970KLPTR-T | Pin-compatible successor with higher 1.5 A peak current, integrated charge pump, and wider 5–40 V VBB range. | Supports higher-torque stepper motors and battery-powered designs; requires updated RC timing network for PWM. | Preferred for new designs needing extended current headroom and simplified gate drive. |
| DRV8825PWPR | Microstepping-focused device with 1/32 step resolution, but lower 1.75 A peak and no batwing thermal package. | Requires external current-sense resistors and external diodes; lacks integrated clamp diodes and thermal tab structure. | Suitable only if microstepping granularity outweighs thermal and BOM advantages of UDQ2916LBTR-T. |
Compared with UDQ2916LBTR-T, the A4970KLPTR-T offers higher current capability and modern integration but targets newer platforms, while the DRV8825PWPR trades thermal robustness and analog simplicity for digital microstepping precision-making UDQ2916LBTR-T uniquely suited for cost-sensitive, thermally constrained industrial stepper control where 1/2–1/4 stepping suffices.
Availability
UDQ2916LBTR-T is available at Aetrix Electronics and suitable for industrial motion control, automotive HVAC actuation, and medical infusion pump designs requiring stable component supply during pre-end-of-life transition.
Supply support for UDQ2916LBTR-T 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
Allegro MicroSystems is a U.S.-based designer of high-performance magnetic sensing and power ICs, specializing in motion control, current sensing, and motor driver solutions for industrial and automotive markets.
The UDQ2916LBTR-T belongs to Allegro's legacy 2916 dual full-bridge family, engineered for robust, thermally efficient stepper and DC motor control in space-constrained industrial environments where reliability across wide temperature ranges is critical.
FAQ
What is the operating temperature range for UDQ2916LBTR-T?
The UDQ2916LBTR-T is rated for operation from –40°C to +105°C ambient temperature (Range Q). This extended range enables use in automotive under-hood applications and industrial environments with uncontrolled thermal conditions. The device incorporates thermal shutdown at 170°C junction temperature and recovers automatically at 145°C, ensuring safe operation even during transient overloads.
Does UDQ2916LBTR-T require external flyback diodes?
No, UDQ2916LBTR-T does not require external flyback diodes. It integrates internal clamp and flyback diodes for both bridges, protecting against inductive transients generated by stepper windings or DC motor back-EMF. This eliminates four external diodes per bridge, reducing bill-of-materials cost and PCB area-confirmed in the device description and Applications Information section.
How is current limiting configured on UDQ2916LBTR-T?
Current limiting on UDQ2916LBTR-T is configured using an external sense resistor (RS) and reference voltage (VREF), with digital scaling via I0/I1 inputs. The peak current is calculated as ITRIP = VREF / (10 × RS), and I0/I1 select 0%, 33%, 67%, or 100% of that value. This allows both coarse digital adjustment and fine analog tuning-enabling precise torque control in half-step and microstepping modes.
What package type is UDQ2916LBTR-T supplied in?
UDQ2916LBTR-T is supplied in a 24-pin surface-mount wide SOIC (SOICW) package with batwing leads (Pins 6/7 and 18/19). These fused leads serve as thermally enhanced ground/power tabs, achieving 55°C/W junction-to-ambient thermal resistance on a single-layer PCB with 1 in² copper. The package conforms to JEDEC MS-013 AD and includes dedicated emitter return pins (E1/E2) for accurate current sensing.
Is UDQ2916LBTR-T still in production?
Yes, UDQ2916LBTR-T remains in production but is classified as Pre-End of Life. Per Allegro documentation dated January 31, 2011, it will enter its final Last Time Buy phase within a minimum of six months from that date. Aetrix Electronics maintains active inventory and supports lifecycle coordination-including volume procurement and BOM continuity-for customers transitioning legacy designs.
UDQ2916LBTR-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Allegro MicroSystems
- Series:
- -
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- Parallel
- Technology:
- Bipolar
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 750mA
- Voltage - Supply:
- 4.75V ~ 5.25V
- Voltage - Load:
- 10V ~ 45V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
UDQ2916LBTR-T FAQ
1.How can I place an order for UDQ2916LBTR-T through Aetrix?
Please submit a Request for Quotation (RFQ) for UDQ2916LBTR-T 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 UDQ2916LBTR-T reliable?
The price and inventory of UDQ2916LBTR-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UDQ2916LBTR-T is usually 5 days.
3.What payment methods are accepted for UDQ2916LBTR-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UDQ2916LBTR-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UDQ2916LBTR-T?
UDQ2916LBTR-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UDQ2916LBTR-T 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 UDQ2916LBTR-T?
For technical support, including UDQ2916LBTR-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UDQ2916LBTR-T requirements.
6.How does Aetrix verify that UDQ2916LBTR-T is sourced from the original manufacturer or authorized distributors?
All UDQ2916LBTR-T 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 UDQ2916LBTR-T meets industry standards.
7.What is the process for return or replacement of UDQ2916LBTR-T?
All UDQ2916LBTR-T units undergo pre-shipment inspection (PSI). If there is an issue with UDQ2916LBTR-T, 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 UDQ2916LBTR-T part is unused and in its original packaging.
Return procedure for UDQ2916LBTR-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UDQ2916LBTR-T Tags
-
DRV2603RUNR
Texas Instruments
-
DRV8837CDSGR
Texas Instruments
-
DRV8837DSGR
Texas Instruments
-
DRV8838DSGR
Texas Instruments
-
DRV8839DSSR
Texas Instruments
-
EMC2301-1-ACZL-TR
Microchip Technology
-
DRV8231ADSGR
Texas Instruments
-
EMC2302-2-AIZL-TR
Microchip Technology
-
DRV8800PWPR
Texas Instruments
-
DRV8835DSSR
Texas Instruments
-
EMC2303-1-KP-TR
Microchip Technology
-
DRV8876PWPR
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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.
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…
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…
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…
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 …
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…
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…
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…
