{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX603ESA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX603ESA","canonicalUrl":"https://icboms.com/analog-devices/MAX603ESA","factsUrl":"https://icboms.com/api/mcp/products/MAX603ESA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim MAX603ESA+, positive LDO regulator, 500 mA output, adjustable (fixed 5V), 35 µA quiescent current, 0.55 V dropout at 500 mA, 8-SOIC package, -40°C to 85°C.","salesMarkdown":"## Regulator with a low quiescent draw and dual-mode output The Maxim MAX603ESA+ is a single-output positive LDO regulator that delivers up to 500 mA from an input rail as high as 11.5 V. Its standout feature for always-on or battery-backed rails is the 35 µA quiescent current — that is the current the regulator burns just to stay alive, regardless of load. For a microcontroller or sensor node that spends most of its time in sleep, that 35 µA Iq is the difference between a battery that lasts a season and one that lasts a year. The output can be set as adjustable from 1.25 V up to 11 V, or strapped for a fixed 5 V output using the same pin configuration. Dropout voltage is 0.55 V at the full 500 mA load, so the input must stay at least that far above the output to maintain regulation. Protection circuits cover over-current, over-temperature, and reverse polarity on the input. The enable pin lets a system controller gate the regulator on and off, which is how you drop the load current to near zero in a sleep state. The part is rated across the industrial temperature range of -40°C to 85°C, so it fits outdoor telecom, factory-floor sensors, and engine-bay electronics that see thermal cycling. ## Package and footprint Housed in an 8-pin SOIC package (3.90 mm body width), the MAX603ESA+ is a surface-mount part that reflows on a standard SOIC-8 land pattern. The supplier device package is listed as 8-SOIC, and the shipping form is Tube — not Tape & Reel, so if your pick-and-place line expects reels, factor in a tube-to-reel transfer or order the tape-compatible variant. ## Lifecycle and sourcing ROHS3 compliant, so it passes the EU material restrictions without an exemption expiry to track.","metaTitle":"MAX603ESA+ LDO Regulator, 500 mA, Adjustable/Fixed 5V","metaDescription":"Maxim MAX603ESA+ positive LDO regulator: 500 mA output, 35 µA quiescent current, adjustable or fixed 5V output. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"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":"Enable","Current - Output":"500mA","Protection Features":"Over Current, Over Temperature, Reverse Polarity","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 85°C","Voltage - Input (Max)":"11.5V","Voltage Dropout (Max)":"0.55V @ 500mA","Voltage - Output (Max)":"11V","Supplier Device Package":"8-SOIC","Current - Quiescent (Iq)":"35 µA","Voltage - Output (Min/Fixed)":"1.25V (5V)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.24","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$7.24000","currency":"USD"},{"qty":10,"price":"$6.53600","currency":"USD"},{"qty":25,"price":"$6.23240","currency":"USD"},{"qty":100,"price":"$5.41140","currency":"USD"},{"qty":250,"price":"$5.16816","currency":"USD"},{"qty":500,"price":"$4.71216","currency":"USD"},{"qty":1000,"price":"$4.10414","currency":"USD"},{"qty":2500,"price":"$3.95213","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/MAX603-MAX604.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can MAX603ESA+ be used as a fixed 5V output regulator?","answer":"Yes. The output type is listed as Adjustable (Fixed) — the part can be configured for a fixed 5 V output or set to an adjustable voltage between 1.25 V and 11 V using external resistors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX603ESA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX603ESA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}