{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX666CSA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX666CSA","canonicalUrl":"https://icboms.com/analog-devices/MAX666CSA","factsUrl":"https://icboms.com/api/mcp/products/MAX666CSA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX666CSA+ linear regulator, positive output, adjustable (fixed 5V), 40mA, 15µA quiescent current, 8-SOIC surface mount package, tube.","salesMarkdown":"## 40mA LDO with 15µA quiescent current — the battery-life spec The MAX666CSA+ is a positive-output linear regulator delivering up to 40 mA from a 1.3 V to 16 V adjustable output, or a fixed 5 V option selected by pin-strapping. The headline number for a battery-powered design is the 15 µA quiescent current — the regulator's own draw stays under the self-discharge rate of a small lithium cell, so a sensor node that spends most of its life in sleep mode doesn't drain the battery between wake cycles. ## Dropout and input range — what the rail needs Maximum dropout is 0.9 V at the full 40 mA load — the input rail must stay at least 0.9 V above the target output across the full load range, or the output falls out of regulation. ## Control features for the battery circuit On-chip current limit protects the pass transistor and the load during a fault. The enable pin lets a microcontroller or a pushbutton gate the regulator — pulling it low drops the output and cuts the quiescent current to near zero. The low-battery detection comparator flags a falling input voltage before the regulator drops out, giving the system time for an orderly shutdown or a data save. Analog Devices lists the MAX666CSA+ as Active with ROHS3 compliance.","metaTitle":"Analog Devices MAX666CSA+ LDO Regulator, 40mA, 8-SOIC","metaDescription":"MAX666CSA+ from Analog Devices: linear regulator, 40mA output, 15µA quiescent current, adjustable/fixed 5V, 8-SOIC. Active, ROHS3. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Output Type":"Adjustable (Fixed)","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Control Features":"Current Limit, Enable, Low Battery Detection","Current - Output":"40mA","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C ~ 70°C","Voltage - Input (Max)":"16.5V","Voltage Dropout (Max)":"0.9V @ 40mA","Voltage - Output (Max)":"16V","Supplier Device Package":"8-SOIC","Current - Quiescent (Iq)":"15 µA","Voltage - Output (Min/Fixed)":"1.3V (5V)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.14","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.14000","currency":"USD"},{"qty":10,"price":"$4.61700","currency":"USD"},{"qty":25,"price":"$4.36480","currency":"USD"},{"qty":100,"price":"$3.78300","currency":"USD"},{"qty":250,"price":"$3.58900","currency":"USD"},{"qty":500,"price":"$3.22040","currency":"USD"},{"qty":1000,"price":"$2.91000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4a378dba8e1534afd0c9fb685d882fba.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the MAX666CSA+ come in?","answer":"It is supplied in an 8-SOIC surface-mount package (3.90 mm width), shipped in tube format."},{"question":"Who supplies MAX666CSA+ and how is it quoted for volume purchases?","answer":"The MAX666CSA+ is manufactured by Analog Devices."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX666CSA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX666CSA 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}}