{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP2951CDR2G","brand":"onsemi","brandSlug":"onsemi","productSlug":"LP2951CDR2G","canonicalUrl":"https://icboms.com/onsemi/LP2951CDR2G","factsUrl":"https://icboms.com/api/mcp/products/LP2951CDR2G","rawCanonicalId":null},"summary":{"shortDescription":"onsemi LP2951CDR2G positive adjustable/fixed LDO voltage regulator, 100 mA output, 30 V max input, 0.45 V dropout, 8-SOIC surface mount package, -40 to 125 °C.","salesMarkdown":"## Regulator fit for 5V or adjustable rails The onsemi LP2951CDR2G is a positive LDO regulator delivering up to 100 mA from an input rail that can reach 30 V. The output can be set as a fixed 5 V rail or adjusted from a 1.235 V reference — the same device covers both architectures, reducing BOM line count when a design uses multiple output voltages across variants. ## Dropout and headroom at full load Maximum dropout voltage is 0.45 V at 100 mA output. For a 5 V fixed output, a 5.5 V input rail at the low end of tolerance still holds 50 mV of headroom — marginal but workable if the input capacitor is sized for the transient dip. Quiescent current is 120 µA typical, rising to 12 mA max under full supply current. The 120 µA Iq matters for always-on or battery-backed rails where the regulator's own draw cuts into standby time. Over-current and over-temperature protection are built in, so the part survives a sustained short or a high-ambient stall without external crowbar circuitry.","metaTitle":"onsemi LP2951CDR2G LDO Regulator, 100mA, 8-SOIC","metaDescription":"onsemi LP2951CDR2G positive adjustable/fixed LDO regulator, 100mA output, 30V max input, 0.45V dropout, -40 to 125°C, 8-SOIC. Active, ROHS3. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Signal Isolation"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Adjustable (Fixed)","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Output":"100mA","Protection Features":"Over Current, Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"30V","Voltage Dropout (Max)":"0.45V @ 100mA","Current - Supply (Max)":"12 mA","Voltage - Output (Max)":"30V","Supplier Device Package":"8-SOIC","Current - Quiescent (Iq)":"120 µA","Voltage - Output (Min/Fixed)":"1.235V (5V)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.62","stockQuantity":24,"priceTiers":[{"qty":1,"price":"$0.62000","currency":"USD"},{"qty":10,"price":"$0.55000","currency":"USD"},{"qty":25,"price":"$0.51680","currency":"USD"},{"qty":100,"price":"$0.39160","currency":"USD"},{"qty":250,"price":"$0.33328","currency":"USD"},{"qty":500,"price":"$0.31664","currency":"USD"},{"qty":1000,"price":"$0.24164","currency":"USD"},{"qty":2500,"price":"$0.22498","currency":"USD"},{"qty":5000,"price":"$0.21664","currency":"USD"},{"qty":12500,"price":"$0.20831","currency":"USD"},{"qty":25000,"price":"$0.20625","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/de8bf3d9b3abc2728a8adb7a28c0afc4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output configuration and voltage range of LP2951CDR2G?","answer":"It is a positive regulator with an adjustable output (minimum 1.235 V) that can also be configured as a fixed 5 V output. The output can be set up to 30 V maximum, matching the input voltage ceiling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/LP2951CDR2G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/LP2951CDR2G when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}