# DRV8870DDAR-S

**JSMSEMI** · Brushed DC Motor Drivers · ESOP-8

DRV8870DDAR-S from JSMSEMI, in a ESOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground return; all circuit voltages are referenced to this pin. |
| 2 | IN2 | input | Logic input 2 for H-bridge direction and PWM control; VIH ≥ 2.0 V (min), VIL ≤ 0.8 V (max), absolute maximum 6 V. |
| 3 | IN1 | input | Logic input 1 for H-bridge direction and PWM control; VIH ≥ 2.0 V (min), VIL ≤ 0.8 V (max), absolute maximum 6 V. |
| 4 | VREF | power_in | Analog reference voltage input that sets the current-limit trip threshold; ITRIP = VREF ÷ (10 × Rs); operating range 0-5 V. |
| 5 | VBB | power_in | Motor supply voltage input; recommended operating range 8-40 V, absolute maximum 45 V. |
| 6 | OUT1 | output | H-bridge output 1; drives one terminal of the DC motor at up to 5 A peak / 3.0 A continuous; absolute maximum voltage −2 V to 40 V. |
| 7 | LSS | passive | Low-side current sense node; an external sense resistor Rs connected between this pin and GND sets the current-limit trip point per ITRIP = VREF ÷ (10 × Rs). |
| 8 | OUT2 | output | H-bridge output 2; drives the other terminal of the DC motor at up to 5 A peak / 3.0 A continuous; absolute maximum voltage −2 V to 40 V. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | ESOP-8 |
| Category | Motor Driver ICs |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `DRV8870DDAR-S`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `drv8870ddar-s-etched.step` / `drv8870ddar-s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `drv8870ddar-s.step` / `drv8870ddar-s.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590908823757025280) (11 pp, sha256 `ee49ff4d5dad6e99`, retrieved 2026-09-21, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-sonnet-4-6` (vision), consensus `claude-opus-4-7` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/drv8870ddar-s-datasheet.pdf)