Single H-bridge driver for one brushed DC motor from a 6.5 to 45 V supply, delivering up to 3.6 A peak. Two logic inputs (IN1, IN2) set forward, reverse, brake, and coast directly, and the internal current regulation trips at a level set by one resistor at ILIM, so the driver limits inrush and stall current without a sense resistor in the motor path. Built-in undervoltage, overcurrent, and overtemperature protection shut the bridge down and recover automatically. The PowerPAD carries heat into the board copper.

Pinout

Pin	Name	Type	Function
1	GND	power_in	Logic ground. Connect to board ground.
2	IN2	input	Logic input 2. Together with IN1 controls the H-bridge outputs (forward/reverse/brake/coast) and PWM speed. Has an internal ~100 kΩ pulldown to GND; input logic threshold VIL=0.5 V max, VIH=1.5 V min, 5.5 V max.
3	IN1	input	Logic input 1. Together with IN2 controls the H-bridge outputs and PWM speed. Has an internal ~100 kΩ pulldown to GND; input logic threshold VIL=0.5 V max, VIH=1.5 V min, 5.5 V max.
4	ILIM	input	Current-limit control. Connect a resistor from ILIM to GND to set the internal current-chopping threshold using ITRIP = VILIM / (RILIM × AV), where VILIM ≈ 64 kV constant.
5	VM	power_in	6.5-V to 45-V motor power supply. Connect a 0.1-µF bypass capacitor to ground plus sufficient bulk capacitance rated for VM. UVLO trips at ~6.1-6.4 V falling.
6	OUT1	output	H-bridge output 1. Connect directly to one motor terminal or other inductive load. Drives up to 3.6 A peak; RDS(on) ≈ 565 mΩ (HS+LS typ).
7	PGND	power_in	High-current (power) ground path for the low-side FET sources. Connect to board ground.
8	OUT2	output	H-bridge output 2. Connect directly to the other motor terminal or inductive load. Drives up to 3.6 A peak.
PAD	PAD	passive	Exposed thermal pad on the underside. Connect to board ground and use large copper pours and multiple thermal vias on multiple layers for heat dissipation.

Key specifications

Parameter	Value
Type	Brushed DC motor driver (single H-bridge)
Supply (VM)	6.5-45 V
Peak current	3.6 A
RDS(on)	565 mΩ (HS + LS, typ)
Control	PWM via IN1 / IN2
Current limit	Adjustable via ILIM resistor
Protection	UVLO, OCP, OTP (auto-recover)
Package	HTSSOP-8 (PowerPAD)

Ordering variants

Same part, different packaging or reel option.

DRV8871DDAR (HTSSOP-8, tape & reel)

CAD (KiCad official)

Symbol: Driver_Motor:DRV8871DDA (KiCad official)
Footprint: Package_SO:Texas_HTSOP-8-1EP_3.9x4.9mm_P1.27mm_EP2.95x4.9mm_Mask2.4x3.1mm_ThermalVias
3D model: HTSSOP-8 PowerPAD (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (27 pp, sha256 09de551aa0c6d090, 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