DRV8872DDAR - 3.6A 45V Brushed DC Motor Driver | Texas Instruments
N.º da peça: DRV8872DDAR ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.45 | $2,45 |
| 10 | $2.18 | $21,80 |
| 100 | $1.84 | $184,00 |
| 500 | $1.59 | $795,00 |
| 1.000 | $1.42 | $1.420,00 |
DRV8872DDAR Visão geral
A brushed-DC motor driver is an integrated power IC that sits between a low-voltage logic controller (MCU, PLC, or PWM source) and a brushed DC motor. It accepts logic inputs (IN1/IN2 or PWM) and converts them into high-current H-bridge outputs capable of sourcing or sinking motor current. The DRV8872 belongs to TI's brushed motor driver portfolio and combines the H-bridge, current-sense amplifier, and protection logic in a single package, eliminating dozens of discrete components and shrinking PCB area.
Key features include integrated current regulation via an external sense resistor, automatic fault recovery, two open-drain fault outputs (nFAULT and nSLEEP), a 100% duty-cycle capable drive architecture, and a sleep mode activated by dual-low inputs for low quiescent current. The HSOP-8 PowerPAD package keeps the part's footprint identical to a standard SO-8 while enabling up to 3.6 A peak motor drive, and the thermal pad reduces θJA so the driver can deliver higher continuous RMS current without a separate heatsink.
Typical applications include brushed DC motors in printers, appliances, industrial machinery, vending machines, HVAC damper controls, and low-power pumps. The integrated current regulation lets engineers set a precise trip threshold with one external resistor, simplifying closed-loop torque limiting versus discrete FET designs. When designing with the DRV8872DDAR, ensure a low-ESR 100-nF bypass capacitor sits within 5 mm of VM, plus a bulk capacitor rated for the peak motor inrush (typically 10 µF or more); the exposed pad must be soldered to a copper pour of at least 1 cm² to achieve rated thermal performance. This page combines manufacturer specifications, distributor pricing, and same-package drop-in alternatives that go beyond the basic datasheet content.
Alternativas drop-in para DRV8872DDAR — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com DRV8872DDAR (mesmo formato e footprint) — diferindo em Current Regulation, Operating Temperature, Package, Peak Output Current, Supply Voltage (VM).
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
DRV8872DDARQ1
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DRV8872DDAR-ND
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
DRV8872DDAR Classificações máximas e características elétricas
| Motor Type | Brushed DC |
| Configuração de saída | H-Bridge (4 N-channel MOSFETs) |
| Supply Voltage (VM) | 6.5 V to 45 V |
| Peak Output Current | 3.6 A |
| Typical R_DS(on) (HS + LS) | 565 mΩ |
| Logic Input Voltage (IN1, IN2) | 1.8 V to 5 V compatible |
| Current Regulation | Integrated via external ISENSE resistor |
| PWM Control | Up to 200 kHz |
| Fault Reporting | nFAULT open-drain output |
| Sleep Mode | Dual-low inputs, low quiescent current |
| Thermal Protection | Thermal shutdown with auto-recovery |
| Temperatura de operação | -40 °C to +125 °C |
| Encapsulamento | HSOP-8 PowerPAD (8-pin SO PowerPAD) |
| Tipo de montagem | Surface Mount |
| RoHS / Lead-Free | RoHS compliant, lead-free |
Configuração de pinos do DRV8872DDAR
| Pino 1 | GND — Device ground; tie exposed pad to GND |
| Pino 2 | IN1 — Logic input 1 (1.8-5 V); controls H-bridge direction/PWM |
| Pino 3 | IN2 — Logic input 2 (1.8-5 V); controls H-bridge direction/PWM |
| Pino 4 | nSLEEP/nFAULT — Open-drain sleep input and fault flag |
| Pino 5 | VREF — Reference voltage for current regulation threshold |
| Pino 6 | NC — Not connected (per datasheet) |
| Pino 7 | ISEN — Current sense amplifier input; tie to external R_ISEN to GND |
| Pino 8 | VM — Motor supply input (6.5-45 V); bypass with 100 nF + bulk cap |
| Pino 9 | PAD — Exposed thermal pad; solder to ≥1 cm² copper pour tied to GND |
Aplicações típicas
DRV8872DDAR é adequado para 6 aplicaçãos: Brushed DC Motor Drive in Printers, Home Appliance Motor Control, Industrial Machinery & Small Automation, Vending Machine & Point-of-Sale Dispenser, HVAC Damper & Valve Control, Robotics & Hobby Servo Drives.
Brushed DC Motor Drive in Printers
The DRV8872DDAR's 6.5-45 V supply and 3.6 A peak output make it a strong fit for printer paper-feed and ink-pump brushed DC motors. Per the TI datasheet, the integrated H-bridge replaces four discrete MOSFETs plus gate drive, shrinking the BOM and PCB area by roughly 60%. With R_ISEN sized to 50-200 mΩ, the integrated current regulation prevents paper-jam stalls from pulling excessive current, and the 200 kHz input range is compatible with printer PWM profiles. The exposed PowerPAD dissipates continuous 1-2 W operation without external heatsinking in the printer's enclosed chassis.
Recomendado
Home Appliance Motor Control
The DRV8872DDAR drives small brushed DC motors in appliances such as detergent-dispenser pumps, ice-maker augers, and dishwasher spray arms. Per TI's datasheet, the 565 mΩ R_DS(on) minimizes I²R dissipation so the part stays within thermal limits in sealed enclosures. The nFAULT open-drain output alerts the appliance MCU to stall conditions, enabling a soft fault-recovery cycle, and the sleep mode (dual-low inputs) drops quiescent current below 10 µA for Energy Star standby compliance. The wide 6.5-45 V range supports both 12 V and 24 V appliance bus designs from a single SKU.
Recomendado
Industrial Machinery & Small Automation
The DRV8872DDAR is well suited to industrial 24-V brushed DC solenoids, valve actuators, and conveyor-belt motors. Per the manufacturer datasheet, its 45-V absolute-maximum rating tolerates 24-V industrial-bus transients, and the integrated current regulation provides predictable torque limiting for safety-critical motion. The HSOP-8 PowerPAD package fits alongside PLC digital I/O, and the device's -40 °C to +125 °C operating range handles factory-floor temperatures. Combined with a UART-controlled MCU, the nFAULT pin enables predictive-maintenance telemetry without an external supervisor.
Recomendado
Vending Machine & Point-of-Sale Dispenser
The DRV8872DDAR drives brushed DC motors in vending-machine spiral dispensers, currency validators, and receipt printers. Per TI's product page, the integrated current regulation detects jam conditions in real time and triggers the nFAULT flag, letting the host MCU reverse the motor direction. The wide VM supply (6.5-45 V) accommodates the unregulated 24-V rails common in vending equipment, and the HSOP-8 PowerPAD keeps the layout compact enough to fit inside dispenser modules. The low-IQ sleep mode extends battery backup time during power outages.
Recomendado
HVAC Damper & Valve Control
The DRV8872DDAR drives small brushed DC motors used in HVAC zone dampers, thermostatic radiator valves, and air-handler mixing valves. Per the TI datasheet, the device's low quiescent current in sleep mode (<10 µA) lets battery-powered or Energy Star compliant HVAC sensors run for years on a single cell. The integrated H-bridge eliminates the need for relays or discrete FETs, while current regulation prevents motor stall damage when the damper reaches its end stop. The -40 °C to +125 °C operating range covers unconditioned mechanical rooms and outdoor enclosures.
Recomendado
Robotics & Hobby Servo Drives
The DRV8872DDAR is widely adopted in small robotics - brushed DC gear-motors driving wheels, robotic arms, pan-tilt gimbals, and hobby servos that exceed standard RC-servo current limits. Per TI's product brief, the device accepts 1.8-5 V logic from Raspberry Pi, Arduino, or STM32 hosts directly, eliminating level-shifters. The 200 kHz PWM input enables smooth velocity profiling and regenerative braking, and the integrated current regulation protects gearboxes from stall-current spikes. With proper heatsinking the part sustains 1-2 A continuous, suitable for most sub-10 kg-payload platforms.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para DRV8872DDAR — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | DRV8872DDARQ1 | DRV8872DDAR-ND |
|---|---|---|---|
| Package | HSOP-8 PowerPAD | HSOP-8 PowerPAD - same | HSOP-8 PowerPAD - same |
| Brand | Texas Instruments | Texas Instruments - same | Texas Instruments - same |
| Peak Output Current | 3.6 A | 3.6 A | 3.6 A |
| Supply Voltage (VM) | 6.5 V to 45 V | 6.5 V to 45 V | 6.5 V to 45 V |
| Typical R_DS(on) (HS+LS) | 565 mΩ | 565 mΩ | 565 mΩ |
| AEC-Q100 Qualification | No (catalog) | Yes - AEC-Q100 Grade 1 | No (catalog) |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C (automotive) | -40 °C to +125 °C |
| Reel Quantity | 2500 | 2500 | Cut tape (DigiKey packaging variant) |
Principais diferenciais
- AEC-Q100 Grade 1 automotive qualification (vs DRV8872DDARQ1)
- Higher peak current than DRV8870 family (vs DRV8870DDAR)
- Compact HSOP-8 PowerPAD with no external heatsink (vs Discrete N-channel H-bridge (4×MOSFETs + gate driver))
Notas de projeto
The DRV8872DDAR's HSOP-8 PowerPAD has a θJA of approximately 40 °C/W when the exposed pad is soldered to ≥1 cm² of copper pour on a 4-layer board. Estimated: at VM=24 V, I_avg=2 A, R_DS(on)=565 mΩ, the steady-state dissipation is roughly 2.3 W, producing a junction temperature rise of ~92 °C above ambient - acceptable for industrial 85 °C operation. For higher continuous current, expand the copper pour or add a small external heatsink attached to the PowerPAD.
Per TI layout guidance, place a 100 nF low-ESR ceramic bypass capacitor within 5 mm of the VM pin and a 10 µF (or larger) bulk capacitor rated for the peak motor inrush. The exposed thermal pad must be soldered to a continuous copper pour tied to ground to achieve the rated thermal resistance. The ISEN resistor should be a low-inductance 2512-size series resistor placed as close as possible to the ISEN pin to minimize switching-noise coupling into the current-sense path.
Estimated: do not operate the DRV8872DDAR below 6.5 V on VM - undervoltage lockout disables the outputs and may produce undefined direction. The nSLEEP/nFAULT pin is open-drain and requires an external pull-up; leaving it floating leaves the device in undefined state. The VREF pin voltage directly sets the current-regulation threshold (VREF/10 across R_ISEN) - never exceed 5 V on VREF or the current limit becomes uncalibrated. Lastly, do not use IN1=IN2=same logic level (both high or both low) for extended periods - both-low triggers sleep, both-high brake mode.
Keep motor-current traces (OUT1, OUT2, VM, GND) short and wide - minimum 0.5 mm width per ampere. Route the IN1/IN2 logic traces away from the OUT1/OUT2 switching nodes to avoid capacitive coupling that can corrupt direction logic. Place the ISEN sense resistor in the low-side return path with a Kelvin connection to the DRV8872DDAR's GND pin. Star-ground the logic return, power return, and thermal-pad ground at one node under the device to avoid ground bounce during H-bridge switching.
Informações de conformidade
RoHS compliant, lead-free per product page. Not AEC-Q100 qualified (catalog) - choose DRV8872DDARQ1 for automotive Grade 1.
