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NXP Semiconductors TDA5140AT/C1,112
- Part No.:
- TDA5140AT/C1,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Motor Drivers, Controllers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
TDA5140AT/C1,112.pdf
- Description:
- IC MOTOR DRIVER 4V-18V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,974
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Product details
Overview
TDA5140AT/C1,112 from NXP Semiconductors (formerly Philips) is a bipolar 3-phase brushless DC motor driver IC enabling sensorless full-wave commutation via back-EMF detection. It delivers 0.8 A per output, integrates thermal protection and flyback diodes, and provides tacho (FG) and position pulse (PG/FG) outputs - used in VCR scanner mechanisms requiring precise rotor position tracking without Hall sensors.
For engineers reviewing the TDA5140AT/C1,112 datasheet, TDA5140AT/C1,112 pinout, TDA5140AT/C1,112 application, or TDA5140AT/C1,112 equivalent, this page details its sensorless commutation architecture, adaptive timing capacitor network (CAP-ST/CAP-CD/CAP-DC/CAP-TI), push-pull output stage behavior, OTA-based analog speed control interface, and SO20L package-specific thermal derating.
Technical Context
The TDA5140AT/C1,112 implements six-step full-wave commutation using internal EMF comparators to detect zero-crossings across MOT1–MOT3 windings, with adaptive delay timing governed by external capacitors CAP-CD and CAP-DC. Its start-up oscillator (driven by CAP-ST) forces initial torque pulses until back-EMF is sufficient for self-sustained operation.
It integrates three push-pull output stages with built-in current limiting (0.8 A typ.), thermal shutdown at 140 °C local junction temperature, and an uncommitted transconductance amplifier (OTA) with 40 mA sink capability for external transistor biasing - all operating from a single 4–18 V supply (VP) while accepting motor voltage up to 16 V (VVMOT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VP) | 4–18 V - supports unstabilized supplies; enables direct connection to battery or unregulated rail in consumer motor systems. |
| Output Current (ILIM) | 0.8 A typ. - drives 3-phase BLDC motors up to ~15 W mechanical output without external boost transistors. |
| Drop-Out Voltage (VDO) | 0.93 V @ 100 mA - low saturation loss preserves efficiency in high-current motor phases. |
| Thermal Shutdown (TSD) | 140 °C ±10 °C - local transistor-level sensing prevents latch-up during stall or overload conditions. |
| FG Output Frequency Ratio | 1:2 vs. commutation frequency - generates accurate tachometer signal (e.g., 450 Hz FG for 900 Hz commutation) for closed-loop speed control. |
| OTA Transfer Gain (Gtr) | 0.3 S - provides linear transconductance for analog speed regulation via external power transistor. |
| Operating Ambient Temp | 0–70 °C - validated for commercial-grade applications including laser printers and fax machines. |
Pinout & Package
Package: SO20L (SOT163A), 20-pin plastic small-outline, 7.6 × 10.65 mm body, 1.27 mm pitch, gull-wing leads. Thermal resistance θJA = 1.38 °C/W (Fig.5); max power dissipation 1.05 W at 70 °C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MOT1–MOT3 (Pins 1,4,17) | Push-pull motor phase outputs | Drive star/delta-connected BLDC windings; each includes integrated flyback diodes and current limiting. |
| PG/FG (Pin 7) | Open-collector digital output | Delivers tacho pulses (negative-going edge valid) and optional PG marker pulses; multiplexed internal FG + external PG input. |
| +AMP IN / −AMP IN (Pins 14,15) | OTA differential inputs | Accepts control voltage for analog speed regulation; common-mode range spans GND to VP−1.7 V. |
| AMP OUT (Pin 16) | OTA open-collector output | Sinks up to 40 mA - directly biases base/gate of external NPN/MOSFET for motor current control loop. |
| CAP-ST (Pin 12) | Start oscillator timing | Charged/discharged at 2 µA between 0.05–2.2 V; sets initial torque pulse interval (e.g., 220 nF → ~500 ms period). |
| CAP-CD / CAP-DC (Pins 10,11) | Adaptive commutation delay | Charge/discharge network (8.1 µA / 15.5 µA) dynamically adjusts zero-crossing-to-commutation delay based on motor load/speed. |
| CAP-TI (Pin 13) | Watchdog timing | Detects reverse rotation or stalled rotor: charges at 5 µA from 0.3–2.2 V; 10 nF yields ~3.8 ms watchdog timeout. |
| MOT0 (Pin 19) | Motor star-point input | Connects to center tap of star-wound motor; enables back-EMF sensing on inactive winding during commutation. |
Key Features
| Feature | Design Value |
|---|---|
| Sensorless full-wave commutation | Eliminates 3 Hall-effect sensors by detecting motor back-EMF zero-crossings on MOT1–MOT3; reduces BOM cost and PCB area. |
| Integrated start-up oscillator | Generates timed torque pulses via CAP-ST until back-EMF reaches usable level - ensures reliable motor spin-up from standstill. |
| Adaptive commutation delay | Adjusts timing between zero-crossing detection and next commutation step using CAP-CD/CAP-DC network - maintains optimal torque across load variations. |
| Combined PG/FG output | Multiplexes internal tacho (FG) and external position sensor (PG) signals onto single open-collector pin - simplifies microcontroller interrupt handling. |
| Uncommitted OTA with 40 mA sink | Drives external power transistor directly for analog speed control - avoids need for additional op-amp buffer stage. |
Applications
| VCR Scanner Mechanism | Laser Beam Printer Drum Drive |
|---|---|
|
Use Scenario: Precise bidirectional scanning motion of optical pickup assembly across tape path. IC Role / Device Role / Timing Role: Sensorless BLDC driver providing commutation timing, tacho feedback (FG), and position marker pulses (PG) synchronized to drum rotation. Use Value: Enables jitter-free scan velocity control and head positioning accuracy within ±1.5° mechanical tolerance using only motor EMF - no external sensors required. |
Use Scenario: Constant-speed rotation of photosensitive drum during laser exposure and toner transfer cycles. IC Role / Device Role / Timing Role: Motor controller delivering stable 1500–2400 rpm with FG-derived speed lock and thermal fault protection during high-duty-cycle printing. Use Value: Maintains <±0.5% speed regulation over temperature and load via adaptive timing capacitors - critical for consistent image density and registration. |
| Fax Machine Paper Feed Motor | Automotive HVAC Blower |
|
Use Scenario: Controlled paper advancement through thermal print head and document scanner modules. IC Role / Device Role / Timing Role: Low-noise, low-EMI BLDC driver with built-in current limiting and thermal shutdown - handles intermittent jam-induced stalls. Use Value: Prevents motor burnout during paper jams via per-output current limit (0.8 A) and localized thermal cutoff - eliminates need for external fuses or sense resistors. |
Use Scenario: Variable-speed cabin air circulation using 12 V automotive supply with wide ambient temperature range. IC Role / Device Role / Timing Role: Robust motor driver supporting 0–70 °C operation, ESD-hardened (500 V HBM), and tolerant of battery voltage fluctuations (4–18 V VP). Use Value: Delivers >10,000-hour MTBF in harsh environments due to integrated flyback diodes, thermal protection, and I²L logic design minimizing standby current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar brushless DC motor drive applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STSPIN220 | Integrated MOSFETs (60 V, 1.3 A), SPI interface, no built-in OTA or PG/FG multiplexing. | Requires external MCU for commutation logic; lacks analog speed control path and tacho/position marker integration. | Choose STSPIN220 when digital control and higher voltage/current are needed, but accept added firmware complexity and missing PG/FG functionality. |
| DRV10983 | Three-phase gate driver (no power FETs), supports sensored/sensorless modes, 20 kHz PWM, no CAP-based adaptive timing. | Needs external FETs and separate tacho generation circuitry; relies on digital PLL rather than analog capacitor networks for timing. | Choose DRV10983 for high-efficiency, high-frequency motor control where programmable timing and external FET optimization outweigh analog simplicity. |
Compared with STSPIN220 and DRV10983, the TDA5140AT/C1,112 offers unique analog-centric design: fully integrated power stages, capacitor-programmable adaptive commutation, combined PG/FG output, and OTA-based analog speed control - making it optimal for cost-sensitive, firmware-light consumer motor systems where deterministic timing and minimal external components are critical.
Availability
TDA5140AT/C1,112 is available at Aetrix Electronics and suitable for VCR scanner mechanisms, laser printer drum drives, fax machine paper feed systems, and automotive HVAC blowers requiring stable component supply across extended production lifecycles.
Supply support for TDA5140AT/C1,112 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
NXP Semiconductors (formerly Philips Semiconductors) is a global leader in high-reliability analog and mixed-signal ICs, with deep heritage in consumer motor control and automotive electronics.
The TDA5140AT/C1,112 belongs to NXP's legacy BLDC driver family designed specifically for sensorless, low-cost, high-integration motor systems in office automation and consumer audio/video equipment - emphasizing analog timing, robust thermal behavior, and minimal external component count.
FAQ
What is the function of the CAP-ST capacitor in the TDA5140AT/C1,112?
The CAP-ST capacitor (Pin 12) sets the frequency of the internal start-up oscillator in the TDA5140AT/C1,112. Charged and discharged at 2 µA between 0.05 V and 2.2 V, it determines the interval between initial torque pulses - e.g., a 220 nF capacitor yields ~500 ms period, ensuring reliable motor spin-up before back-EMF becomes detectable. This oscillator resets upon first successful commutation.
How does the TDA5140AT/C1,112 achieve sensorless commutation without Hall sensors?
The TDA5140AT/C1,112 achieves sensorless commutation by monitoring back-EMF zero-crossings on the inactive motor winding (via MOT0 reference) using internal comparators. During each of the six commutation states, one output is high-impedance (Z), allowing EMF sensing on that phase. The detected zero-crossing triggers adaptive delay timing (governed by CAP-CD/CAP-DC) before switching to the next state - eliminating need for Hall sensors.
What is the purpose of the PG/FG pin (Pin 7) on the TDA5140AT/C1,112?
The PG/FG pin (Pin 7) on the TDA5140AT/C1,112 is a multiplexed open-collector output delivering both tachometer (FG) pulses and position marker (PG) pulses. FG pulses occur at half the commutation frequency (e.g., 450 Hz for 900 Hz commutation), with negative-going edges indicating zero-crossings. When an external PG sensor is active, one FG pulse per revolution is shortened to 18 µs to mark absolute position - enabling precise VCR head alignment.
Can the TDA5140AT/C1,112 drive delta-connected BLDC motors?
Yes, the TDA5140AT/C1,112 can drive both star- and delta-connected BLDC motors. Its three push-pull output stages (MOT1–MOT3) and dedicated MOT0 input (for star-point reference) are designed for star topology, but the output stage architecture - with independent current limiting, thermal protection, and flyback diodes per phase - supports delta configurations when MOT0 is left unconnected and appropriate external snubbers are used to manage flyback energy.
What is the maximum allowable motor supply voltage (VVMOT) for the TDA5140AT/C1,112?
The maximum allowable motor supply voltage (VVMOT) for the TDA5140AT/C1,112 is 16 V, as specified in the Quick Reference Data and Limiting Values tables. Exceeding this risks damage to the output transistors and integrated flyback diodes. The device operates safely with VVMOT as low as 1.7 V, enabling use in low-voltage portable motor applications - but output current capability scales with VVMOT due to saturation voltage constraints.
How does the thermal protection mechanism work in the TDA5140AT/C1,112?
The TDA5140AT/C1,112 implements per-transistor thermal protection: each of the six output transistors has an integrated temperature sensor active only when conducting. Shutdown occurs at 140 °C ±10 °C local junction temperature (TSD), and restart requires cooling by at least 30 K (∆T) below TSD. This localized approach prevents false trips during transient overloads while protecting against sustained overtemperature in individual output legs - critical for asymmetric motor loads.
TDA5140AT/C1,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (3)
- Interface:
- Parallel
- Technology:
- Bipolar
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 1A
- Voltage - Supply:
- 4V ~ 18V
- Voltage - Load:
- 1.7V ~ 16V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
TDA5140AT/C1,112 FAQ
1.How can I place an order for TDA5140AT/C1,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA5140AT/C1,112 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 TDA5140AT/C1,112 reliable?
The price and inventory of TDA5140AT/C1,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA5140AT/C1,112 is usually 5 days.
3.What payment methods are accepted for TDA5140AT/C1,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA5140AT/C1,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDA5140AT/C1,112?
TDA5140AT/C1,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA5140AT/C1,112 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 TDA5140AT/C1,112?
For technical support, including TDA5140AT/C1,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA5140AT/C1,112 requirements.
6.How does Aetrix verify that TDA5140AT/C1,112 is sourced from the original manufacturer or authorized distributors?
All TDA5140AT/C1,112 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 TDA5140AT/C1,112 meets industry standards.
7.What is the process for return or replacement of TDA5140AT/C1,112?
All TDA5140AT/C1,112 units undergo pre-shipment inspection (PSI). If there is an issue with TDA5140AT/C1,112, 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 TDA5140AT/C1,112 part is unused and in its original packaging.
Return procedure for TDA5140AT/C1,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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