{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS78918DBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS78918DBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS78918DBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS78918DBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS78918DBVR linear regulator, fixed 1.8V output, 100mA, 85dB PSRR at 1kHz, 28µA quiescent current, SOT-23-5 package, -40°C to 125°C.","salesMarkdown":"## 1.8V fixed rail, 100mA continuous — the supply spec that defines the fit The TPS78918DBVR is a single-output positive linear regulator from Texas Instruments delivering a fixed 1.8V output at up to 100mA. The 10V maximum input gives enough headroom to regulate cleanly from a 5V or 3.3V intermediate bus without a separate pre-regulator stage. Quiescent current is 28 µA typical — low enough for always-on rails in battery-backed or standby domains where the regulator's own draw must stay under the system's sleep budget. Power-supply rejection ratio is 85 dB at 1 kHz. This means switching ripple from a upstream DC-DC converter at typical 300 kHz to 2 MHz is attenuated by roughly 85 dB at the 1 kHz point; above that frequency the PSRR rolls off, so the actual attenuation at the switching fundamental depends on the output capacitor's impedance and the regulator's control-loop bandwidth. For a 1.8V rail feeding an ADC reference or a small-signal analog front-end, this level of rejection keeps supply-coupled noise below the converter's LSB threshold in most 12-bit to 14-bit signal chains. The enable pin lets the system power down the regulator externally — useful for sequencing multiple rails or cutting power to a sensor interface during sleep. ## Active lifecycle, ROHS3, SOT-23-5 footprint Packaged in a SOT-23-5 (SC-74A) surface-mount case, the footprint is standard and widely supported in assembly houses.","metaTitle":"TPS78918DBVR LDO, 1.8V Fixed, 100mA, SOT-23-5","metaDescription":"Texas Instruments TPS78918DBVR linear regulator: 1.8V fixed output, 100mA, 85dB PSRR at 1kHz, 28µA Iq, -40 to 125°C, SOT-23-5. Active, ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"85dB (1kHz)","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":"100mA","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","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"28 µA","Voltage - Output (Min/Fixed)":"1.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.15","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.15000","currency":"USD"},{"qty":10,"price":"$1.03200","currency":"USD"},{"qty":25,"price":"$0.97960","currency":"USD"},{"qty":100,"price":"$0.80450","currency":"USD"},{"qty":250,"price":"$0.75208","currency":"USD"},{"qty":500,"price":"$0.66462","currency":"USD"},{"qty":1000,"price":"$0.52470","currency":"USD"},{"qty":3000,"price":"$0.49500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d96841f0a52cf1bd6bbf98cc5a18a723.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of TPS78918DBVR?","answer":"The power-supply rejection ratio is 85 dB at 1 kHz. This is the headline noise-rejection figure for filtering upstream switching ripple from the 1.8V output rail."},{"question":"What package does TPS78918DBVR come in?","answer":"It is supplied in a SOT-23-5 package (SC-74A case code), also referred to as the supplier device package SOT-23-5."},{"question":"What compliance documentation does Texas Instruments provide for TPS78918DBVR?","answer":"The part is ROHS3 compliant. Standard Texas Instruments documentation includes the datasheet, RoHS certificate of compliance, and material declaration. No UL or IEC certification is listed on this part record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS78918DBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS78918DBVR 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}}