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Texas Instruments UC3638DW — Discrete Semiconductors

UC3638DW Motor Driver IC, 10V-36V, 20-SOIC

MPNUC3638DW
End of Life

Texas Instruments UC3638DW, Motor Driver IC - Controller - Commutation, Direction Management, Parallel Interface, Brushed DC, Pre-Driver - Half Bridge (2), 10V ~ 36V Supply, 0°C ~ 70°C, 20-SOIC (0.295", 7.50mm Width), Tube.

$9.67Ref. price · indicative, final on quote
Packaging20-SOIC (0.295", 7.50mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

UC3638DW specifications
ParameterValue
MountingSurface Mount
Motor type - AC, DCBrushed DC
Supply voltage10V ~ 36V
InterfaceParallel
Operating temperature0°C ~ 70°C (TA)
PackageTube
FunctionController - Commutation, Direction Management
ApplicationsGeneral Purpose
Case20-SOIC (0.295\", 7.50mm Width)
Output configurationPre-Driver - Half Bridge (2)

Product details

Brushed DC motor pre-driver for 12V/24V industrial rails

The Texas Instruments UC3638DW is a controller IC for commutation and direction management of brushed DC motors. It outputs a pre-driver signal to external half-bridge MOSFETs (two half-bridges), so the actual power stage is off-chip. The parallel interface accepts logic-level direction and PWM commands, making it a straightforward fit for PLC-driven or microcontroller-supervised axis control. Supply range of 10V to 36V covers 12V and 24V industrial bus voltages without an extra regulator. Package is a 20-SOIC wide-body (7.50 mm width), surface-mount. Tube shipment suits engineering samples and low-volume builds; for reel quantities, confirm the order code suffix with your distributor.

The UC3638DW is a controller-only IC: it generates gate-drive signals but needs external N-channel MOSFETs and bootstrap circuitry to switch motor current. That gives you flexibility to size the FETs for the actual motor load, but adds board area and BOM lines.

Active lifecycle, no LTB watch needed

Frequently asked questions

Is the UC3638DW equivalent to UC3637?

The UC3637 is a different controller variant; the UC3638DW is not listed as a direct drop-in replacement. Compare the datasheets for pinout and feature differences before substituting.

What is the UC3638DW used for?

It is a commutation and direction controller for brushed DC motors. Typical applications include industrial motor drives, conveyor belt controls, pump and fan speed controls, and general-purpose motion systems operating from 12V or 24V supplies.