Texas Instruments DRV8800RTYT

Overview

DRV8800RTYT from Texas Instruments is a DMOS full-bridge motor driver IC for brushed DC motors, featuring 0.48 Ω typical R_DS(on), 8–36 V supply range, ±2.8 A peak output current, and integrated charge pump for high-side gate drive. It operates in PHASE/ENABLE mode with sleep control via nSLEEP and fault reporting via open-drain nFAULT - used in printer paper feed mechanisms requiring bidirectional torque control.

For engineers reviewing the DRV8800RTYT datasheet, DRV8800RTYT pinout, DRV8800RTYT application, or DRV8800RTYT equivalent, key selection criteria include H-bridge decay mode configuration (MODE pin), thermal warning/shutdown thresholds (160 °C / 175 °C), SENSE resistor-based overcurrent trip (500 mV threshold), and WQFN-16 PowerPAD™ package thermal resistance (R_θJA = 38.1 °C/W).

Technical Context

The DRV8800RTYT implements an N-channel H-bridge with internal charge pump generating gate drive voltage above V_BB; it supports fast-decay and slow-decay recirculation modes controlled by MODE pin logic. Protection includes UVLO (7.5 V release), overcurrent detection (3 A trip), and dual thermal monitoring (160 °C warning, 175 °C shutdown).

It uses a PHASE/ENABLE digital interface: PHASE sets direction (H/L), ENABLE enables/disables outputs, and nSLEEP disables internal rails and charge pump to achieve 10 μA sleep current. The SENSE pin provides current-sense feedback referenced to ground, enabling adjustable overcurrent protection down to 500 mV threshold.

Key Specifications

Pinout & Package

DRV8800RTYT is housed in a 4.00 mm × 4.00 mm thermally enhanced WQFN-16 package with exposed PowerPAD™ for PCB-level heat dissipation. Pin numbering follows TI standard top-view orientation (pin 1 at top-left corner, counterclockwise).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar H-bridge motor driver applications.

Compared with DRV8870RTJT and TB6612FNG, the DRV8800RTYT offers optimal balance of 2.8 A drive strength, 8–36 V flexibility, and compact WQFN thermal performance - making it preferred for mid-power industrial actuators where board space and thermal headroom are constrained.

Availability

DRV8800RTYT is available at Aetrix Electronics and suitable for printer paper feed systems, industrial conveyor belt drives, robotic joint actuators, and automated test equipment positioners requiring stable component supply across extended production lifecycles.

Supply support for DRV8800RTYT 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 high-reliability power management solutions.

The DRV880x product line delivers integrated full-bridge motor drivers for brushed DC and stepper winding control in space-constrained industrial and automation systems - designed for robust operation under variable load, temperature, and supply conditions.

FAQ

What is the maximum continuous output current rating for the DRV8800RTYT?

The DRV8800RTYT supports ±2.8 A peak output current, but continuous current depends on PCB thermal design. With 2-layer 2 oz copper and full PowerPAD™ soldering, continuous current is ~1.8 A at 85 °C ambient. Derating is required above 25 °C ambient per R_θJA = 38.1 °C/W - the DRV8800RTYT must not exceed 150 °C junction temperature under any condition.

How does the SENSE pin function in the DRV8800RTYT, and what resistor value should be used?

The SENSE pin on the DRV8800RTYT is a ground-referenced current-sense input with a fixed 500 mV overcurrent trip threshold. A precision resistor (e.g., 0.2 Ω ±1%) is placed between SENSE and system ground. For a 2.5 A trip point, use R_SENSE = 500 mV / 2.5 A = 0.2 Ω. The DRV8800RTYT disables outputs when SENSE voltage reaches +500 mV or –500 mV, indicating short-to-supply or short-to-ground faults.

Does the DRV8800RTYT support 100% duty cycle operation, and how is it enabled?

Yes, the DRV8800RTYT supports 100% PWM duty cycle operation in forward or reverse direction when ENABLE is held high and PHASE is held static (high for forward, low for reverse). Unlike some drivers, it does not require alternating PWM on PHASE - direct DC voltage application to PHASE/ENABLE achieves full-on conduction. This behavior is confirmed in the Control Logic Table and enables simple on/off motor control without PWM generation.

What is the purpose of the VREG pin on the DRV8800RTYT, and should it be connected?

The VREG pin on the DRV8800RTYT outputs ~7.5 V and reflects the internal regulator voltage used for logic and gate drive circuitry. Per TI documentation, this pin must be left disconnected - no load or capacitor should be attached. Connecting external circuitry risks disrupting internal regulation and may cause erratic nFAULT behavior or startup failure. The DRV8800RTYT functions correctly with VREG floating.

Can the DRV8800RTYT be used in parallel configurations to increase current capacity?

No, the DRV8800RTYT is not designed for parallel operation. Its internal current sensing, thermal monitoring, and fault reporting are per-device and not synchronized across multiple units. TI's datasheet explicitly states that paralleling is unsupported and may result in unequal current sharing, thermal runaway, or false nFAULT assertions. For higher current, select the DRV8870RTJT or use external current-sharing circuitry with independent control.