Integrated stepper driver for 48 V bipolar motors
The Texas Instruments DRV8436RGER is a fully integrated bipolar stepper driver that packs the control logic and Power MOSFET output stage into a single 4x4 mm package. It accepts a Step/Direction interface and delivers up to 1.5 A per bridge across a load supply range of 4.5 V to 48 V. With >256 microsteps of resolution, it suits precision positioning in general-purpose industrial motion — pick-and-place, lab automation, and small conveyor drives.
No external MOSFETs — BOM simplification
Because the DRV8436RGER integrates the Power MOSFETs, there is no external FET stage to select, match, or heat-sink. The two half-bridge outputs directly drive the two phases of a bipolar stepper — the only external components are the supply decoupling caps, current-sense resistors (if using chopper regulation), and the Step/Direction logic signals. This cuts the BOM count and board area versus a discrete FET-plus-gate-driver approach.
For new-design qualification, this part is safe to freeze into a BOM without an obsolescence watch — though TI occasionally shrinks lead times on older nodes, so dual-sourcing with a pin-compatible alternate (if one exists) is a routine risk practice. No official successor exists because none is needed.
Sourcing posture
The part is not subject to allocation or long lead-time constraints typical of some TI stepper drivers — lead time is evaluated per order, not quoted here.