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. The -40°C to 125°C operating range covers factory-floor and outdoor cabinet environments without derating.
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.
Active lifecycle — no near-term LTB risk
The DRV8436RGER is listed as Active with ROHS3 compliance. There is no announced end-of-life or last-time-buy window. 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 DRV8436RGER is sourced through independent distribution channels. 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. For a BOM line that needs a reliable supply of active stepper drivers, this part qualifies without LTB risk.