{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP3985IM5X-3.3/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP3985IM5X-3.3-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP3985IM5X-3.3-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP3985IM5X-3.3%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP3985IM5X-3.3/NOPB, fixed-output positive LDO regulator, 3.3V, 150mA, dropout 0.1V max at full load, PSRR 50dB~40dB (1kHz~10kHz), quiescent current 150µA, enable pin, over-current/over-temperature/short-circuit protection, -40°C~125°C, SOT-23-5.","salesMarkdown":"## 3.3 V fixed LDO — what the ratings mean for your rail The Texas Instruments LP3985IM5X-3.3/NOPB is a single-output, fixed 3.3 V positive LDO regulator rated for 150 mA continuous output. It comes in a SOT-23-5 package with an enable pin for on/off control. The part is designed for noise-sensitive analog and mixed-signal rails where supply rejection matters across the audio band. PSRR starts at 50 dB at 1 kHz and rolls to 40 dB at 10 kHz. That 10 dB drop across one decade is typical for a low-Iq LDO; if your load draws switching noise above 10 kHz, plan for additional post-filter capacitance or a higher-PSRR regulator. Quiescent current is 150 µA typical, supply current maximum 250 µA — low enough for battery-operated gear but not the ultra-low-Iq tier (sub-10 µA) you would pick for always-on wearables. The 150 µA Iq is a reasonable trade-off for the PSRR and dropout figures. Operating temperature spans -40°C to 125°C, which qualifies it for automotive under-hood, industrial motor drives, and outdoor telecom enclosures — not just commercial indoor boards. ## Protection and control — built-in, no external watchdog needed Over-current, over-temperature, and short-circuit protection are integrated. No external current-limit resistor or thermal shutdown circuit required. The enable pin lets a GPIO or supervisor sequence the rail on and off. ## Sourcing and lifecycle — active, no LTB risk No last-time-buy notice or obsolescence risk for current BOM commitments. ROHS3 compliant.","metaTitle":"LP3985IM5X-3.3/NOPB LDO Regulator, 3.3V 150mA, SOT-23-5","metaDescription":"Texas Instruments LP3985IM5X-3.3/NOPB fixed 3.3V LDO, 150mA output, 0.1V dropout at full load, PSRR 50dB~40dB (1kHz~10kHz), -40°C~125°C, SOT-23-5.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"50dB ~ 40dB (1kHz ~ 10kHz)","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)":"6V","Voltage Dropout (Max)":"0.1V @ 150mA","Current - Supply (Max)":"250 µA","Supplier Device Package":"SOT-23-5","Current - Quiescent (Iq)":"150 µA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.78","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.78000","currency":"USD"},{"qty":10,"price":"$0.68300","currency":"USD"},{"qty":25,"price":"$0.64160","currency":"USD"},{"qty":100,"price":"$0.52360","currency":"USD"},{"qty":250,"price":"$0.48636","currency":"USD"},{"qty":500,"price":"$0.41390","currency":"USD"},{"qty":1000,"price":"$0.33113","currency":"USD"},{"qty":3000,"price":"$0.21688","currency":"USD"},{"qty":6000,"price":"$0.20288","currency":"USD"},{"qty":15000,"price":"$0.19800","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2b0c4f544b067861411cda399254c5b0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the LP3985IM5X-3.3/NOPB protection features?","answer":"Over-current, over-temperature, and short-circuit protection are all integrated. No external protection components required."},{"question":"Does LP3985IM5X-3.3/NOPB have an enable pin?","answer":"Yes, the part includes an enable pin for on/off control. It can be driven by a GPIO or a voltage supervisor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP3985IM5X-3.3-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/LP3985IM5X-3.3-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}