{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP3999ITLX-2.8/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP3999ITLX-2.8-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP3999ITLX-2.8-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP3999ITLX-2.8%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP3999ITLX-2.8/NOPB LDO voltage regulator, fixed 2.8V output, 150mA, 5-DSBGA package, surface mount, active.","salesMarkdown":"## 2.8V fixed LDO with 150mA output and low dropout The LP3999ITLX-2.8/NOPB from Texas Instruments is a fixed-output low-dropout linear regulator delivering 2.8 V at up to 150 mA. Its maximum dropout voltage of 0.1 V at full load means the input rail can sit as low as 2.9 V and still maintain regulation — useful in battery-powered designs where every millivolt of headroom matters. Power-supply rejection ratio (PSRR) is 60 dB at 1 kHz, rolling off to 50 dB at 10 kHz. That's enough attenuation to clean up ripple from a switching pre-regulator before it reaches sensitive analog loads like an ADC reference or audio codec. ## Package, footprint, and hand-soldering reality The part comes in a 5-bump DSBGA (Wafer-Level Chip Scale Package) measuring 1.41 x 1.08 mm — roughly the size of a grain of rice. The 0.5 mm pitch and lack of exposed side leads mean it's not a breadboard-friendly part; you'll need a PCB with matching land pattern and a reflow oven or hot-air station. Cut tape and reel options are available for prototyping quantities. Enable pin (active high) lets you shut down the output and drop quiescent current to near zero — handy for battery-powered devices that sleep most of the time. Over-temperature and short-circuit protection are built in, so a momentary output short won't kill the regulator. ROHS3 compliant, so it meets current EU and global environmental requirements without exemption.","metaTitle":"Texas Instruments LP3999ITLX-2.8/NOPB LDO, 2.8V, 150mA","metaDescription":"Texas Instruments LP3999ITLX-2.8/NOPB fixed 2.8V LDO, 150mA output, 0.1V dropout, 60dB PSRR at 1kHz. Active production, ROHS3 compliant. Order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"60dB ~ 50dB (1kHz ~ 10kHz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"5-WFBGA, DSBGA","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"150mA","Protection Features":"Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 85°C","Voltage - Input (Max)":"6V","Voltage Dropout (Max)":"0.1V @ 150mA","Current - Supply (Max)":"200 µA","Supplier Device Package":"5-DSBGA (1.41x1.08)","Current - Quiescent (Iq)":"150 µA","Voltage - Output (Min/Fixed)":"2.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.08","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.08000","currency":"USD"},{"qty":10,"price":"$0.96300","currency":"USD"},{"qty":25,"price":"$0.91400","currency":"USD"},{"qty":100,"price":"$0.75090","currency":"USD"},{"qty":250,"price":"$0.70192","currency":"USD"},{"qty":500,"price":"$0.62032","currency":"USD"},{"qty":1000,"price":"$0.48972","currency":"USD"},{"qty":3000,"price":"$0.46200","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/901f97bc1df401686c47adc923cf009c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy LP3999ITLX-2.8/NOPB and how is it quoted?","answer":"This part is sourced through independent distribution."},{"question":"What is the PSRR of LP3999ITLX-2.8/NOPB?","answer":"PSRR is 60 dB at 1 kHz, dropping to 50 dB at 10 kHz. This provides effective ripple rejection from switching converters in the audible and low-frequency switching range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP3999ITLX-2.8-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/LP3999ITLX-2.8-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}}