Single H-bridge driver for one brushed DC motor from a 4.5 to 33 V supply, delivering up to 3.7 A peak. Two logic inputs set forward, reverse, brake, and coast, and an integrated current-sense output (IPROPI) mirrors the motor current as a small analog signal a host can read without a shunt in the motor path. An adjustable current-limit trip and built-in undervoltage, overcurrent, and overtemperature protection round it out. The tiny WSON suits compact motor and actuator drives.

Pinout

Pin	Name	Type	Function
1	IPROPI	output	Analog current output proportional to load current (current mirror, 1500 µA/A scaling factor). Connect an external resistor (RIPROPI) to GND to convert to a voltage for sensing/regulation with VREF. Max 3 mA, max voltage 5.75 V.
2	IN2	input	Logic input controlling H-bridge output OUT2. Has internal pulldown (100 kΩ to GND). Compatible with 1.8-V/3.3-V/5-V logic; VIH ≥ 1.5 V, VIL ≤ 0.5 V. Supports PWM up to 200 kHz.
3	IN1	input	Logic input controlling H-bridge output OUT1. Has internal pulldown (100 kΩ to GND). Compatible with 1.8-V/3.3-V/5-V logic; VIH ≥ 1.5 V, VIL ≤ 0.5 V. Supports PWM up to 200 kHz.
4	VREF	input	Analog reference voltage input (0 to 5 V, max 6 V) setting the current-regulation trip threshold together with RIPROPI. Absorbs the need for MCU intervention during start-up/stall.
5	VM	power_in	Motor power supply, 4.5 V to 33 V (abs max 35 V). Bypass with a 0.1-µF ceramic to GND plus sufficient bulk capacitance rated for VM.
6	OUT1	output	H-bridge output 1. Connect directly to one motor terminal or other inductive load. Peak current 3.7 A; RDS(on) high-side + low-side ≈ 600 mΩ at 24 V.
7	GND	power_in	Device power ground. Connect to system ground plane; tie to thermal pad for good return and thermal dissipation.
8	OUT2	output	H-bridge output 2. Connect directly to the other motor terminal or other inductive load. Peak current 3.7 A; body-diode forward voltage ≈ 0.8 V at 1 A.
9	PAD	passive	Exposed thermal pad. Connect to board ground and use large ground planes on multiple layers with multiple nearby vias for effective heat dissipation.

Key specifications

Parameter	Value
Type	Brushed DC motor driver (single H-bridge)
Supply (VM)	4.5-33 V
Peak current	3.7 A
Current sense	Integrated (IPROPI output)
Control	PWM via IN1 / IN2
Protection	UVLO, OCP, OTP
Package	WSON-8 (2x2 mm)

Ordering variants

Same part, different packaging or reel option.

DRV8231ADSGR (WSON-8, tape & reel)

CAD (KiCad official)

Symbol: Driver_Motor:DRV8231ADSG (KiCad official)
Footprint: Package_SON:WSON-8-1EP_2x2mm_P0.5mm_EP0.9x1.6mm
3D model: WSON-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (44 pp, sha256 96545c004b2fa920, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF