{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP2992AIM5X-1.8","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP2992AIM5X-1.8","canonicalUrl":"https://icboms.com/texas-instruments/LP2992AIM5X-1.8","factsUrl":"https://icboms.com/api/mcp/products/LP2992AIM5X-1.8","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP2992AIM5X-1.8 LDO regulator, 250 mA output, 1.8 V fixed positive, 45 dB PSRR at 1 kHz, SOT-23-5, active.","salesMarkdown":"## 250 mA LDO, 1.8 V fixed — dropout and headroom The LP2992AIM5X-1.8 is a 250 mA fixed-output LDO from Texas Instruments, delivering 1.8 V from an input up to 16 V. Quiescent current is 95 µA typical, making it suitable for always-on rails in battery-powered equipment where the LDO's own draw is a fraction of the load current. The 4 mA maximum supply current includes the pass-element drive. ## PSRR and noise rejection bandwidth PSRR is 45 dB at 1 kHz — this is the mid-band rejection figure. Below 1 kHz the PSRR is higher (the LDO's error amplifier has more loop gain at lower frequencies); above 1 kHz it rolls off. For a design where the upstream switching regulator runs at 500 kHz, the LDO's rejection at that frequency will be lower than the 1 kHz spec — the switching frequency should be checked against the PSRR vs. frequency curve in the datasheet. ## Industrial temperature grade and protection The SOT-23-5 package's thermal resistance (junction-to-ambient, ~250°C/W on a standard 2-layer board) limits the allowable power dissipation: at 85°C ambient, the maximum internal dissipation before hitting the 125°C junction limit is about 160 mW. The Enable pin allows the output to be gated by a logic signal, reducing quiescent draw to near zero when the rail is unused.","metaTitle":"LP2992AIM5X-1.8 Texas Instruments LDO, 250 mA, 1.8 V Fixed","metaDescription":"Texas Instruments LP2992AIM5X-1.8 LDO, 250 mA output, 1.8 V fixed, 45 dB PSRR at 1 kHz, SOT-23-5. Active production, RoHS non-compliant (SnPb). Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"45dB (1kHz)","Package":"Bulk","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"250mA","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"16V","Voltage Dropout (Max)":"0.85V @ 250mA","Current - Supply (Max)":"4 mA","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"95 µA","Voltage - Output (Min/Fixed)":"1.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.52","stockQuantity":0,"priceTiers":[{"qty":577,"price":"$0.52000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a364dffc493133041ee0cd746565f374.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of the LP2992AIM5X-1.8 at 1 kHz?","answer":"The PSRR is 45 dB at 1 kHz. This is the mid-band rejection figure; rejection is higher at lower frequencies and rolls off above 1 kHz. The actual rejection at the switching frequency of the upstream converter should be verified against the PSRR vs. frequency curve."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP2992AIM5X-1.8","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LP2992AIM5X-1.8 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}}