{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM74701QDDFRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM74701QDDFRQ1","canonicalUrl":"https://icboms.com/texas-instruments/LM74701QDDFRQ1","factsUrl":"https://icboms.com/api/mcp/products/LM74701QDDFRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM74701QDDFRQ1 N+1 ORing controller, automotive grade, 3.2V to 65V supply, 80 µA quiescent, SOT-23-8 package.","salesMarkdown":"## What the 3.2V–65V input range means for your rail design The LM74701QDDFRQ1 is an N+1 ORing controller that replaces a Schottky diode in redundant power supply architectures. Its 3.2V to 65V operating range covers the full automotive battery voltage envelope — from a cold-crank dip below 4V to a load-dump transient that can push the bus above 60V — without needing an external clamp or pre-regulator. The internal N-channel FET handles the ORing function with a 1:1 input-to-output ratio, meaning each supply rail gets its own controller and the outputs are diode-ORed at the load. This eliminates the forward voltage drop and reverse leakage of a Schottky, which matters when every millivolt of headroom counts in a 3.3V or 5V downstream rail. ## Automotive qualification and temperature grade AEC-Q100 qualification means this part has passed the full suite of automotive stress tests — high-temperature operating life, temperature cycling, ESD, latch-up — and is PPAP-capable for production programs. The -40°C to 125°C operating range puts it in the Grade 1 band, suitable for under-hood and engine-bay environments where ambient temperature can exceed 105°C on a hot day. The 80 µA quiescent supply current is the controller's own draw — the external FET gate drive adds to this during switching, but the standby power is low enough for always-on modules that sit on the battery even when the ignition is off. ## Switching speed and fault isolation Turn-on delay is 1.4 µs and turn-off delay is 450 ns. The fast turn-off is the critical parameter: when one supply rail shorts or drops out, the ORing FET must open before the good rail back-feeds into the fault. A 450 ns response means the controller catches the fault within one microsecond, limiting the reverse current pulse to what the output capacitance can absorb without drooping the load voltage. ## Package and board integration Housed in a SOT-23-8 with the supplier device package listed as TSOT-23-8, this is a thin, surface-mount package with a 0.65 mm pitch. The exposed pad on the TSOT variant provides a thermal path to the PCB copper — the datasheet's recommended land pattern and via array under the pad should be followed to keep the junction temperature within limits during a sustained fault where the FET conducts hard. Surface-mount mounting means standard reflow soldering; the package is compatible with lead-free profiles. No special handling beyond the MSL rating on the reel label. ## Lifecycle and sourcing This is a current-production part suitable for both new designs and ongoing production.","metaTitle":"Texas Instruments LM74701QDDFRQ1 N+1 ORing Controller","metaDescription":"TI LM74701QDDFRQ1 automotive N+1 ORing controller, 3.2V to 65V input, 80 µA quiescent, AEC-Q100. Active production — quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"N+1 ORing Controller","Grade":"Automotive","Package":"Tape & Reel (TR); Cut Tape (CT)","FET Type":"N-Channel","Applications":"Redundant Power Supplies","Mounting Type":"Surface Mount","Qualification":"AEC-Q100","Package / Case":"SOT-23-8","Delay Time - ON":"1.4 µs","lifecycle_stage":"eol_hot","Current - Supply":"80 µA","Delay Time - OFF":"450 ns","Voltage - Supply":"3.2V ~ 65V","Internal Switch(s)":"Yes","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"TSOT-23-8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.37","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.37000","currency":"USD"},{"qty":10,"price":"$2.12500","currency":"USD"},{"qty":25,"price":"$2.00480","currency":"USD"},{"qty":100,"price":"$1.70810","currency":"USD"},{"qty":250,"price":"$1.60388","currency":"USD"},{"qty":500,"price":"$1.40340","currency":"USD"},{"qty":1000,"price":"$1.16281","currency":"USD"},{"qty":3000,"price":"$1.08262","currency":"USD"},{"qty":6000,"price":"$1.04252","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4d6a4de50b635182ef6cfdb20b0b59ee.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM74701QDDFRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM74701QDDFRQ1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}