{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP2957ISX/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP2957ISX-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP2957ISX-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP2957ISX%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP2957ISX/NOPB LDO voltage regulator, fixed 5V output, 250mA, 0.8V dropout, DDPAK/TO-263-5 surface-mount package, -40°C to +125°C.","salesMarkdown":"## 250 mA fixed 5V LDO — DDPAK thermal story The LP2957ISX/NOPB is a single-output positive LDO regulator from Texas Instruments, delivering a fixed 5V rail at up to 250 mA. The DDPAK/TO-263-5 package (5 leads plus exposed tab) is the surface-mount version of the TO-220 power footprint. For 250 mA at 12V in, the regulator dissipates about 1.75W; a 1-inch-square copper pour on the bottom layer keeps the junction below 125°C in still air. ## Temperature grade and protection — survives harsh environments The 30V maximum input voltage gives margin on a nominal 24V rail that can spike to 28V during a load transient. On-chip protection circuits cover over-current (foldback current limit), over-temperature (thermal shutdown with hysteresis), and reverse polarity — the regulator survives a reversed battery connection without external diode protection on the input. The Enable pin lets a system controller shut down the 5V rail to save power, dropping the quiescent current from 200 µA to near zero.","metaTitle":"LP2957ISX/NOPB LDO Regulator, 5V Fixed, 250mA, TO-263-5","metaDescription":"Texas Instruments LP2957ISX/NOPB LDO, 5V fixed output, 250mA, 0.8V dropout, -40°C to +125°C, DDPAK/TO-263-5. Active, ROHS3. Order LP2957ISX/NOPB.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-263-6, D²Pak (5 Leads + Tab), TO-263BA","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"250mA","Protection Features":"Over Current, Over Temperature, Reverse Polarity","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"30V","Voltage Dropout (Max)":"0.8V @ 250mA","Current - Supply (Max)":"33 mA","Supplier Device Package":"DDPAK/TO-263-5","Current - Quiescent (Iq)":"200 µA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.59","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.59000","currency":"USD"},{"qty":10,"price":"$3.22200","currency":"USD"},{"qty":25,"price":"$3.04560","currency":"USD"},{"qty":100,"price":"$2.63960","currency":"USD"},{"qty":250,"price":"$2.50420","currency":"USD"},{"qty":500,"price":"$2.24700","currency":"USD"},{"qty":1000,"price":"$1.91550","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP2957ISX-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/LP2957ISX-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}}