{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP5900SDX-3.3/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP5900SDX-3.3-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP5900SDX-3.3-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP5900SDX-3.3%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP5900 series LDO, fixed 3.3V output, 150mA, 6-WDFN exposed pad, surface mount, active.","salesMarkdown":"The Texas Instruments LP5900SDX-3.3/NOPB is a single-output, fixed 3.3 V positive LDO rated for 150 mA continuous output. It comes in a 6-WDFN exposed-pad package (6-WSON 2.2x2.5 mm) for surface-mount assembly. ## What the PSRR means for noise-sensitive rails PSRR is listed at 85 dB at 100 Hz, rolling off to 40 dB at 100 kHz. That 85 dB at line frequency means the regulator attenuates 100/120 Hz ripple from a rectified mains supply by a factor of roughly 18,000 — useful for powering analog front-ends or audio codecs where the ripple would otherwise couple into the signal path. The 40 dB at 100 kHz is still 100× attenuation, but above that frequency the LDO's loop gain drops and the output relies on the bypass cap for further filtering. ## Quiescent current and battery-operated design Quiescent current is 50 µA typical, with a maximum supply current of 230 µA. For a battery-powered sensor that spends most of its time in a low-power state, that 50 µA Iq is the floor the regulator draws even when the load is light — it sets the lower bound on standby current. The 0.15 V dropout at 150 mA means the input rail can sag to 3.45 V before the output falls out of regulation, giving margin in a 3.7 V Li-ion application as the cell discharges. ## Package, temperature, and protection The 6-WSON package with exposed pad (2.2x2.5 mm) requires a thermal land on the PCB to pull heat from the die — the pad is the primary thermal path. On-chip protection includes over-temperature shutdown and short-circuit current limiting, so the regulator survives a sustained output short without damage.","metaTitle":"LP5900SDX-3.3/NOPB LDO, 3.3V 150mA, 6-WSON, Active","metaDescription":"Texas Instruments LP5900SDX-3.3/NOPB LDO, fixed 3.3V output, 150mA, 85dB PSRR at 100Hz. Active, RoHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"85dB ~ 40dB (100Hz ~ 100kHz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"6-WDFN Exposed Pad","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)":"5.5V","Voltage Dropout (Max)":"0.15V @ 150mA","Current - Supply (Max)":"230 µA","Supplier Device Package":"6-WSON (2.2x2.5)","Current - Quiescent (Iq)":"50 µA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.96","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.96000","currency":"USD"},{"qty":10,"price":"$0.84700","currency":"USD"},{"qty":25,"price":"$0.79520","currency":"USD"},{"qty":100,"price":"$0.64900","currency":"USD"},{"qty":250,"price":"$0.60284","currency":"USD"},{"qty":500,"price":"$0.51304","currency":"USD"},{"qty":1000,"price":"$0.41043","currency":"USD"},{"qty":4500,"price":"$0.37195","currency":"USD"},{"qty":9000,"price":"$0.36300","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b1cdbce4fcf886ae82559da8fd801b95.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP5900SDX-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/LP5900SDX-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":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}