{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP2985IM5-1.8/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP2985IM5-1.8-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP2985IM5-1.8-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP2985IM5-1.8%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP2985 series linear regulator, fixed 1.8V output, 150mA, SOT-23-5 package, SC-74A, 95µA quiescent current, 45dB PSRR at 1kHz, enable pin, over-current and thermal protection.","salesMarkdown":"## 150 mA, 1.8 V fixed output — the load and rail it serves The LP2985IM5-1.8/NOPB: That 150 mA ceiling suits it for powering low-current digital cores, sensor front-ends, or wireless transceiver rails where the downstream draw stays under the limit — think a 100 mA MCU plus a few milliamps of peripheral load. Maximum dropout is 0.58 V at full load, meaning the input rail must stay above roughly 2.38 V to maintain regulation. A 3.3 V supply with 10% tolerance dips to 2.97 V — still 0.59 V headroom, just enough. If the input is a Li-ion cell (3.0 V cutoff), the regulator drops out before the cell is fully drained, so a boost or higher-voltage rail upstream is needed. ## Quiescent current and PSRR — the battery-life and noise trade-off Quiescent current is 95 µA typical — not the lowest in the LDO class, but reasonable for always-on blocks in a battery-powered design. PSRR is 45 dB at 1 kHz. That knocks down 100 mV of 1 kHz ripple to about 560 µV at the output — adequate for a digital rail but marginal for a sensitive analog front-end. If the load is an audio codec or precision ADC, the 45 dB figure means the upstream switcher's ripple needs to be low to start with, or a second-stage filter is warranted. ## Temperature grade and protection — where this LDO survives The 125°C ceiling includes self-heating: at 150 mA with 0.58 V dropout, dissipation is 87 mW — in the SOT-23-5 package that translates to roughly 30-40°C rise above ambient, so a 105°C ambient still keeps the junction under the limit. Built-in over-current, over-temperature, and short-circuit protection mean the regulator folds back or shuts down before damaging itself or the load. These are current-limit and thermal-shutdown circuits, not precision current sources — they prevent catastrophic failure, not regulate fault current. ## Package and board-fit — SOT-23-5 footprint Housed in a 5-pin SOT-23 (SC-74A), the same footprint as countless other small LDOs and logic devices. The 0.95 mm pitch and 2.9 x 1.6 mm body fit tight layouts without requiring a 4-layer board for fan-out. The supplier device package is SOT-23-5 — the standard land pattern applies. Available in Tape & Reel for production pick-and-place or Cut Tape for prototyping. The ROHS3 compliance covers the full bill of materials — no exemptions that complicate end-product certification.","metaTitle":"LP2985IM5-1.8/NOPB LDO Regulator, 150mA, 1.8V Fixed","metaDescription":"Texas Instruments LP2985IM5-1.8/NOPB linear regulator, 150 mA output, fixed 1.8V, 0.58V dropout, 95 µA Iq, SOT-23-5. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"45dB (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":"150mA","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)":"0.58V @ 150mA","Current - Supply (Max)":"2.5 mA","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"95 µA","Voltage - Output (Min/Fixed)":"1.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.16","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.16000","currency":"USD"},{"qty":10,"price":"$1.03800","currency":"USD"},{"qty":25,"price":"$0.98520","currency":"USD"},{"qty":100,"price":"$0.80940","currency":"USD"},{"qty":250,"price":"$0.75664","currency":"USD"},{"qty":500,"price":"$0.66864","currency":"USD"},{"qty":1000,"price":"$0.52788","currency":"USD"},{"qty":2000,"price":"$0.49800","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/363a5a845d48df2c18567607a8327780.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does Texas Instruments provide for this part?","answer":"The LP2985IM5-1.8/NOPB is ROHS3 compliant. Standard Texas Instruments documentation includes the datasheet, PCN notifications, and material declaration. No UL or IEC certification is listed in the record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP2985IM5-1.8-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LP2985IM5-1.8-NOPB 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}}