DRV8251ADDAR | TI Texas Instruments Integrated H-Bridge Brushed DC Motor Driver

# DRV8251ADDAR

One sentence summary: DRV8251ADDAR is TI’s highly integrated N-channel H-bridge brushed DC motor driver. It incorporates an IPROPI current mirror with no external sense resistor required. It supports a wide voltage range of 4.5~48V and delivers a peak output current of 4.1A with comprehensive protection features, ideal for driving small brushed DC motors, solenoid valves, pumps and valves.

## Key Specifications

1. Topology: Single N-MOS full H-bridge

2. Power supply VM: 4.5V ~ 48V, absolute maximum voltage 50V

3. Peak output current: 4.1A

4. Total high-side and low-side on-resistance Rds(on): 450mΩ typical

5. Logic input: Compatible with 1.8V / 3.3V / 5V MCU logic levels

6. Control method: Hardware PWM control via IN1/IN2 pins

7. Current sensing: Integrated IPROPI current mirror (feature of DRV8251A, eliminates sense resistor)

8. Sleep current: ＜1μA @24V, 25℃

9. Junction temperature range: **-40℃ ~ +150℃**

10. Package: HSOIC-8 (PowerPAD DDA), dimension 4.9 × 6.0 mm, SMD mount

11. Protection features: Under-voltage lockout (UVLO), over-current protection (OCP, auto-retry), thermal shutdown (TSD)

12. Compliance: RoHS, REACH

Features

1. Single H-bridge drives brushed DC motors to implement **forward, reverse, brake and stop** functions with PWM speed regulation.

2. Built-in IPROPI current mirror outputs current signal directly. The MCU can implement **current closed-loop control, stall detection and torque limiting**. It removes high-power sense resistors and saves PCB space.

3. Integrated charge pump supports 100% duty cycle output for improved driving efficiency.

4. Low-power sleep mode with microampere-level standby current, suitable for battery-powered devices.

5. Multiple hardware protections including under-voltage, over-current and thermal shutdown for automatic fault protection and reduced risk of damage to motors and main boards.

6. SMT mountable and detectable by TRI AOI.

Applications

- Industrial automation: Small brushed motors, solenoid valves, micro water pumps, fans, small conveying mechanisms

- Office equipment: Printers, scanners, automatic paper feeders

- Smart home: Smart locks, electric curtains, small motors for robot vacuums

- Medical equipment: Ventilators, small medical pumps, portable medical instruments

- Consumer appliances: Coffee machines, actuators for small home appliances

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> Note: DRV8251ADDAR belongs to DRV8251A series with IPROPI current mirror. DRV8251DDAR (without suffix A) uses ISEN external shunt resistor. Please pay attention during part selection.