{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX8511EXK18","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX8511EXK18","canonicalUrl":"https://icboms.com/analog-devices/MAX8511EXK18","factsUrl":"https://icboms.com/api/mcp/products/MAX8511EXK18","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX8511EXK18 LDO regulator, 120 mA output, 1.8 V fixed, SC-70-5 / SOT-353 package, PSRR 72 dB ~ 46 dB (1 kHz ~ 100 kHz), active.","salesMarkdown":"## SC-70-5 LDO for noise-sensitive 1.8 V rails The MAX8511EXK18 is a single-output, fixed 1.8 V LDO from Analog Devices, rated for 120 mA continuous output. The PSRR profile — 72 dB at 1 kHz, rolling off to 46 dB at 100 kHz — is the headline spec for anyone feeding a sensitive analog load. A 1.8 V ADC reference or a PLL supply sees the 1 kHz ripple from a switching preregulator attenuated by 72 dB; at 100 kHz the attenuation drops to 46 dB, so the upstream converter's switching frequency should stay below 100 kHz or the output cap needs a low-ESR ceramic to handle the residual ripple. ## 90 µA quiescent — always-on and battery duty Quiescent current is 90 µA typical, drawn regardless of load. In an always-on sensor node or a micro that sleeps at 10 µA, the LDO's own consumption dominates the idle budget — the trade-off is the PSRR and the 120 mA headroom for brief transmit bursts. The shutdown pin (active-low) pulls Iq to near zero when the load is powered down, so a GPIO-controlled enable can cut the 90 µA during long sleep intervals. The 90 µA figure is typical at 25°C; expect it to rise with temperature, but the datasheet's maximum at 85°C is still within the budget for most battery-powered designs.","metaTitle":"MAX8511EXK18 LDO, 120mA, 1.8V fixed, SC-70-5","metaDescription":"Analog Devices MAX8511EXK18 LDO, 120mA output, 1.8V fixed, PSRR 72dB~46dB (1kHz~100kHz), SC-70-5, active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"PSRR":"72dB ~ 46dB (1kHz ~ 100kHz)","Package":"Bulk","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"5-TSSOP, SC-70-5, SOT-353","lifecycle_stage":"eol_hot","Control Features":"Shutdown","Current - Output":"120mA","Protection Features":"Over Current, Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 85°C (TA)","Voltage - Input (Max)":"6V","Supplier Device Package":"SC-70-5","Current - Quiescent (Iq)":"90 µA","Voltage - Output (Min/Fixed)":"1.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.67","stockQuantity":0,"priceTiers":[{"qty":451,"price":"$0.67000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/23ef5a681906996066086ff8f9b74309.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of the MAX8511EXK18 and why does it matter?","answer":"The PSRR is 72 dB at 1 kHz, rolling to 46 dB at 100 kHz. This means a 100 mVpp ripple from a switching regulator at 1 kHz is attenuated to about 25 µVpp at the LDO output — clean enough for a 1.8 V ADC reference or PLL supply. At 100 kHz the same ripple is attenuated to about 500 µVpp, so the upstream switcher's frequency should be kept below 100 kHz or the output capacitor must handle the residual."},{"question":"What package does the MAX8511EXK18 come in?","answer":"The supplier device package is SC-70-5. The part ships in bulk packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX8511EXK18","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX8511EXK18 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}}