{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS76318QDBVRG4Q1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS76318QDBVRG4Q1","canonicalUrl":"https://icboms.com/texas-instruments/TPS76318QDBVRG4Q1","factsUrl":"https://icboms.com/api/mcp/products/TPS76318QDBVRG4Q1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS76318QDBVRG4Q1, Automotive AEC-Q100 LDO, fixed 1.8V output, 150mA, 60dB PSRR at 1kHz, SOT-23-5, active.","salesMarkdown":"## 150 mA LDO with 60 dB PSRR — the noise-rejection ceiling The TPS76318QDBVRG4Q1 is a fixed 1.8 V output LDO from Texas Instruments, rated for 150 mA continuous output. The 60 dB PSRR at 1 kHz means it attenuates ripple from the upstream supply by a factor of 1000 — a switching regulator feeding this LDO will have its switching harmonics knocked down below the noise floor of a sensitive analog load. The enable pin lets a system controller sequence the 1.8 V rail on and off, useful for power-gating in body-control or infotainment modules. ## Protection set and quiescent draw Built-in over-current, over-temperature, and reverse polarity protection cover the common fault conditions on a vehicle power bus — a shorted load or a hot-swap transient won't take out the regulator. Quiescent current is 100 µA typical, with a maximum supply current of 140 µA, keeping the standby drain low enough for always-on modules that draw from the battery. The SOT-23-5 package (SC-74A,) occupies about 3 mm² of board area. The exposed pad on the SOT-23-5 variant is the thermal path — a via array under the pad to the ground plane pulls heat away from the die. For a 150 mA load with 3 V dropout, the power dissipation is 0.45 W; the junction-to-ambient thermal resistance of the SOT-23-5 is around 220°C/W, so the temperature rise is about 99°C above ambient — within the 125°C limit if the ambient stays below 26°C, or with airflow.","metaTitle":"TPS76318QDBVRG4Q1 LDO, 1.8V 150mA, AEC-Q100, SOT-23-5","metaDescription":"Texas Instruments TPS76318QDBVRG4Q1 LDO, fixed 1.8V output, 150mA, 60dB PSRR at 1kHz, AEC-Q100, active production. Quoted to order.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"60dB (1kHz)","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"150mA","Protection Features":"Over Current, Over Temperature, Reverse Polarity","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"10V","Current - Supply (Max)":"140 µA","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"100 µA","Voltage - Output (Min/Fixed)":"1.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.37","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.37000","currency":"USD"},{"qty":10,"price":"$1.22600","currency":"USD"},{"qty":25,"price":"$1.16360","currency":"USD"},{"qty":100,"price":"$0.95570","currency":"USD"},{"qty":250,"price":"$0.89336","currency":"USD"},{"qty":500,"price":"$0.78948","currency":"USD"},{"qty":1000,"price":"$0.62328","currency":"USD"},{"qty":3000,"price":"$0.58800","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e7e579b15d6d81e76e24a3c1e0b44a71.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of TPS76318QDBVRG4Q1?","answer":"The PSRR is 60 dB at 1 kHz, meaning it attenuates input ripple at that frequency by a factor of 1000. This is relevant for cleaning up switching-regulator noise before feeding sensitive analog circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS76318QDBVRG4Q1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS76318QDBVRG4Q1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}