Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗

Loads when you scroll to it. Unloads after 5 minutes in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗

Loads when you scroll to it. Unloads after 5 minutes in the background.

PCB Footprint

Open full view ↗

Loads when you scroll to it. Unloads after 5 minutes in the background.

Datasheet

Open in new tab ↗

Loads when you scroll to it. Unloads after 5 minutes in the background.

Download PDF

Contents

Pinout
Key specifications
CAD (KiCad official)
Provenance

README

markdown

UC3625DWTR

Texas Instruments · Brushless DC (BLDC) Motor Driver · SOIC-28-300mil

UC3625DWTR from Texas Instruments, in a SOIC-28-300mil. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	E/A OUT	output	Error amplifier output, which is compensated for unity-gain stability and may be tied to E/A IN(-) for feedback; it can be driven externally when the error amplifier is biased off.
2	VREF	power_out	Regulated 5 V reference for Hall-effect sensors and speed control circuitry; operation above 30 mA is not advised and it should be bypassed with at least 0.1 µF to ground.
3	ISENSE	output	Current sense amplifier output, equal to 2.5 V + 2 × ABS(ISENSE1 − ISENSE2), and it is best filtered by a capacitor to ground for spikes.
4	ISENSE1	input	Interchangeable differential current sense input; the differential signal may be as high as ±0.5 V before saturation, and the peak-current threshold is about 0.2 V / RSENSE.
5	ISENSE2	input	Interchangeable differential current sense input; the differential signal may be as high as ±0.5 V before saturation, and the overcurrent threshold is about 0.3 V / RSENSE.
6	DIR	input	Direction input that is loaded into a direction latch; the direction latch is transparent only while SPEED-IN is below 250 mV, and DIR thresholds are 0.8 V to 2.0 V.
7	SPEED-IN	input	Speed threshold input (about 250 mV) that inhibits direction changes above that level; it can be connected to TACH-OUT through a filter.
8	H1	input	Hall shaft position sensor input with hysteresis comparator and pull-up; it is TTL compatible, and rise and fall times must be shorter than 20 µs.
9	H2	input	Hall shaft position sensor input with hysteresis comparator and pull-up; it is TTL compatible, and rise and fall times must be shorter than 20 µs.
10	H3	input	Hall shaft position sensor input with hysteresis comparator and pull-up; it is TTL compatible, and rise and fall times must be shorter than 20 µs.
11	PWR VCC	power_in	Supply pin that carries the current sourced by the PD outputs; it can be current limited with a resistor when driving Darlington bases directly.
12	PDC	output	Low-side totem-pole driver output (up to 0.5 A peak) that turns a low-side power device on when high.
13	PDB	output	Low-side totem-pole driver output (up to 0.5 A peak) that turns a low-side power device on when high.
14	PDA	output	Low-side totem-pole driver output (up to 0.5 A peak) that turns a low-side power device on when high.
15	GND	power_in	Ground reference; all thresholds and outputs are referred to this pin except the PD and PU outputs.
16	PUC	output	High-side open-collector driver output (50 V rating) that is active low and pulls low to command a high-side device on.
17	PUB	output	High-side open-collector driver output (50 V rating) that is active low and pulls low to command a high-side device on.
18	PUA	output	High-side open-collector driver output (50 V rating) that is active low and pulls low to command a high-side device on.
19	VCC	power_in	Supply input for 10 V to 18 V operation with undervoltage lockout keeping all outputs off below 7.5 V; bypass with a 0.1 µF ceramic capacitor.
20	TACH-OUT	output	Tachometer output that produces a fixed-width 5 V pulse on each commutation, with an average value proportional to speed.
21	RC-BRAKE	input	Brake threshold input (about 1.0 V) that enters brake mode when pulled below it, and that also sets the tachometer pulse width through an RT-CT network.
22	QUAD SEL	input	Chopping mode select input: low selects two-quadrant chopping and high selects four-quadrant chopping, with thresholds of 0.8 V to 2.0 V.
23	OV-COAST	input	Overvoltage shutdown and coast input with an inhibit threshold of about 1.75 V; it can be driven by TTL, 5 V CMOS, or 12 V CMOS.
24	SSTART	bidirectional	Soft-start pin that is discharged by an internal transistor on faults and clamps the error amplifier output; a 51 kΩ resistor from VREF is required to ensure switching.
25	RC-OSC	bidirectional	Oscillator timing pin, with ROSC from this pin to VREF and COSC to ground; resistors of 10 kΩ to 100 kΩ, capacitors of 1 nF to 100 nF, and frequency below 500 kHz are recommended.
26	PWM IN	input	PWM comparator input compared against E/A OUT; it can be connected to RC-OSC for voltage-mode PWM control.
27	E/A IN(-)	input	Error amplifier inverting input, which is not internally committed and can be connected to ISENSE, TACH-OUT through a filter, or an external command voltage.
28	E/A IN(+)	input	Error amplifier non-inverting input, which is not internally committed and can be connected to ISENSE, TACH-OUT through a filter, or an external command voltage.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-28-300mil
Category	Motor Driver ICs
Pins	28

CAD (KiCad official)

Symbol: UC3625DWTR
Footprint: Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm
3D model: SOIC-28-300mil (KiCad packages3D, STEP)
3D model files: uc3625dwtr-etched.step / uc3625dwtr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); uc3625dwtr.step / uc3625dwtr.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (25 pp, sha256 dcf54a877fad8159, retrieved 2026-10-11, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (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