{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS7A2418DBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS7A2418DBVR","canonicalUrl":"https://icboms.com/texas-instruments/TPS7A2418DBVR","factsUrl":"https://icboms.com/api/mcp/products/TPS7A2418DBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS7A2418DBVR LDO regulator, fixed 1.8V output, 200mA, SOT-23-5 package, 4.5µA quiescent current, 75dB PSRR at 10Hz.","salesMarkdown":"## Fixed 1.8V LDO with 200mA output and 4.5µA quiescent current The TPS7A2418DBVR: Quiescent current is 4.5 µA typical, making this part suited for always-on or battery-powered circuits where the regulator's own draw must stay below the system's sleep-current budget. Maximum dropout voltage is 0.25V at the full 200mA load, so the input rail needs only 2.05V to maintain a regulated 1.8V output — useful in low-headroom designs like 3.3V-to-1.8V conversion. ## PSRR across frequency for noise-sensitive analog rails Power-supply rejection ratio is specified at 75 dB at 10 Hz, rolling off to 62 dB at 1 kHz. This means the LDO attenuates low-frequency ripple from a switching pre-regulator by a factor of roughly 5600 at 10 Hz, dropping to about 1250 at 1 kHz — relevant for powering analog front-ends or reference circuits where supply noise couples into the signal path. ## Protection features and package for board integration Built-in over-current, over-temperature, and under-voltage lockout (UVLO) protection means the LDO handles output shorts and thermal runaway without external supervisory circuitry — the UVLO holds the output off until the input rail is above the threshold, preventing brownout operation. The part is offered in a SOT-23-5 package (SC-74A, SOT-753) with surface-mount termination — the 5-pin footprint fits a standard 0.95 mm pitch layout, and the Enable pin (active-high) allows the downstream rail to be gated by a GPIO or power sequencer.","metaTitle":"Texas Instruments TPS7A2418DBVR LDO, 1.8V Fixed, 200mA","metaDescription":"Texas Instruments TPS7A2418DBVR 200mA LDO, fixed 1.8V output, 4.5µA quiescent current, 75dB PSRR at 10Hz. Active, ROHS3 compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"75dB ~ 62dB (10Hz ~ 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":"200mA","Protection Features":"Over Current, Over Temperature, Under Voltage Lockout (UVLO)","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Input (Max)":"18V","Voltage Dropout (Max)":"0.25V @ 200mA","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"4.5 µA","Voltage - Output (Min/Fixed)":"1.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.63","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.63000","currency":"USD"},{"qty":10,"price":"$0.55300","currency":"USD"},{"qty":25,"price":"$0.51920","currency":"USD"},{"qty":100,"price":"$0.42370","currency":"USD"},{"qty":250,"price":"$0.39356","currency":"USD"},{"qty":500,"price":"$0.33496","currency":"USD"},{"qty":1000,"price":"$0.26797","currency":"USD"},{"qty":3000,"price":"$0.24285","currency":"USD"},{"qty":6000,"price":"$0.23700","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/48258159ea3060034f8be64c1ee2e546.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is TPS7A2418DBVR's PSRR specification?","answer":"The PSRR is 75 dB at 10 Hz, rolling off to 62 dB at 1 kHz — this is the attenuation of ripple from the input rail onto the output, relevant for noise-sensitive analog loads."},{"question":"What package does TPS7A2418DBVR come in?","answer":"The TPS7A2418DBVR is supplied in a SOT-23-5 package (SC-74A, SOT-753), surface-mount, on tape and reel or cut tape."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS7A2418DBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS7A2418DBVR 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}}