{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DRV8145SQRXZRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"DRV8145SQRXZRQ1","canonicalUrl":"https://icboms.com/texas-instruments/DRV8145SQRXZRQ1","factsUrl":"https://icboms.com/api/mcp/products/DRV8145SQRXZRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments DRV8145SQRXZRQ1, Automotive 40-V 46-A Half Bridge, Fully Integrated Control and Power Stage, PWM/SPI Interface, Bi-CMOS, Surface Mount 16-VFQFN Exposed Pad, -40°C to 125°C.","salesMarkdown":"## 46 A half-bridge for 12 V / 24 V automotive loads The Texas Instruments DRV8145SQRXZRQ1 is a fully integrated half-bridge driver rated for brushed DC and bipolar stepper motors in automotive environments. It delivers up to 46 A continuous output from a supply range of 4.5 V to 35 V, covering 12 V and 24 V vehicle electrical systems. The driver integrates the control logic and power stage in a single 16-VFQFN package with an exposed thermal pad (3.5x5.5 mm), controlled via PWM or SPI interface. The 46 A continuous output current places this driver in the high-current tier for a half-bridge IC. The datasheet's SOA curves (not reproduced here) will show the current derating above 85°C ambient; at 125°C the usable current is lower than the 25°C rating. For a brushed DC motor driving a 12 V starter or a 24 V hydraulic pump, the headroom at lower temperatures gives margin, but the thermal design of the PCB land pattern is the limiting factor for sustained high-current operation. ## Supply voltage range: 4.5 V to 35 V The 4.5 V to 35 V supply and load voltage range is wide enough to cover automotive 12 V (nominal 13.8 V, load-dump to 35 V) and 24 V (nominal 28 V, transient to 35 V) systems. The 35 V absolute maximum matches the typical automotive load-dump clamp level for 12 V systems; for 24 V systems the margin above the nominal 28 V is only 7 V, so a transient suppressor on the supply rail is recommended if the vehicle bus can exceed 35 V during jump-start or double-battery conditions. The 4.5 V minimum ensures operation during cold-crank down to 4.5 V, which is below the typical 6 V automotive cold-crank floor. ## PWM and SPI control interface The driver accepts both PWM and SPI commands. PWM input allows direct duty-cycle control from an ECU or motor controller without a serial link, while SPI provides register-based configuration of current limits, slew rate, fault reporting, and diagnostic readback. For designs that need real-time current regulation or multi-axis coordination, the SPI interface reduces pin count versus parallel logic. The Bi-CMOS process keeps the logic supply current low even at high switching frequencies. ## Automotive-grade reliability and lifecycle It is AEC-Q100 qualified per the Automotive grade designation, which is the standard for stress-tested components used in safety- and reliability-critical vehicle systems. The ROHS3 compliance covers the latest restriction exemptions.","metaTitle":"DRV8145SQRXZRQ1 Automotive Half-Bridge Driver, 46 A, 35 V","metaDescription":"TI DRV8145SQRXZRQ1 automotive half-bridge brushed DC motor driver. 46 A output, 4.5-35 V supply, PWM/SPI interface, -40 to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Grade":"Automotive","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Driver - Fully Integrated, Control and Power Stage","Interface":"PWM, SPI","Technology":"Bi-CMOS","Mounting Type":"Surface Mount","Package / Case":"16-VFQFN Exposed Pad","Voltage - Load":"4.5V ~ 35V","lifecycle_stage":"eol_hot","Current - Output":"46A","Voltage - Supply":"4.5V ~ 35V","Motor Type - AC, DC":"Brushed DC","Motor Type - Stepper":"Bipolar","Output Configuration":"Half Bridge","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"16-VQFN-HR (3.5x5.5)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.07","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.07000","currency":"USD"},{"qty":10,"price":"$8.19100","currency":"USD"},{"qty":25,"price":"$7.81000","currency":"USD"},{"qty":100,"price":"$6.78130","currency":"USD"},{"qty":250,"price":"$6.47652","currency":"USD"},{"qty":500,"price":"$5.90506","currency":"USD"},{"qty":1000,"price":"$5.14312","currency":"USD"},{"qty":3000,"price":"$4.17928","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8bb53209e56818e0ec107ea6469a0404.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum current of DRV8145SQRXZRQ1?","answer":"The maximum continuous output current is 46 A. This is the rated current at the power stage; actual usable current depends on ambient temperature, PCB thermal design, and the duty cycle of the load. Derating is required at elevated temperatures above 85°C ambient."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/DRV8145SQRXZRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/DRV8145SQRXZRQ1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}