{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX38903AATB+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX38903AATB","canonicalUrl":"https://icboms.com/analog-devices/MAX38903AATB","factsUrl":"https://icboms.com/api/mcp/products/MAX38903AATB%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX38903AATB+ linear regulator, 1A output, programmable 0.6V to 5V, 10-WFDFN exposed pad, surface mount, tube packaging.","salesMarkdown":"The MAX38903AATB+ comes in a 10-WFDFN exposed pad package (3x3 mm TDFN). Without a proper via array to a copper plane, the junction temperature will exceed the 125 °C rating under sustained load. ## PSRR across the noise band PSRR is 70 dB at 1 kHz, rolling off to 40 dB at 1 MHz. This means the regulator suppresses low-frequency ripple from a switching pre-regulator well, but above 100 kHz the rejection drops — a downstream LC filter or a second LDO stage may be needed if the noise floor at 1 MHz must stay below 1 mV. ## Dropout and quiescent budget Maximum dropout is 0.3 V at 1 A, so the input rail must stay at least 300 mV above the programmed output voltage across the full load range. Quiescent current is 2 mA — not a micropower LDO, but acceptable for always-on rails in a mixed-signal system where the 1 A output and protection set (over-current, over-temperature, reverse polarity) justify the overhead.","metaTitle":"MAX38903AATB+ LDO Regulator, 1A, Programmable, 10-TDFN","metaDescription":"Analog Devices MAX38903AATB+ LDO, 1A output, programmable 0.6V-5V, 70dB PSRR, 125°C junction. Active production. RFQ for pricing and availability.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"PSRR":"70dB ~ 40dB (1kHz ~ 1MHz)","Package":"Tube","Output Type":"Programmable","Mounting Type":"Surface Mount","Package / Case":"10-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"1A","Protection Features":"Over Current, Over Temperature, Reverse Polarity","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Input (Max)":"5.5V","Voltage Dropout (Max)":"0.3V @ 1A","Voltage - Output (Max)":"5V","Supplier Device Package":"10-TDFN (3x3)","Current - Quiescent (Iq)":"2 mA","Voltage - Output (Min/Fixed)":"0.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.72","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.72000","currency":"USD"},{"qty":10,"price":"$3.34100","currency":"USD"},{"qty":25,"price":"$3.15880","currency":"USD"},{"qty":100,"price":"$2.73760","currency":"USD"},{"qty":250,"price":"$2.59720","currency":"USD"},{"qty":500,"price":"$2.33048","currency":"USD"},{"qty":1000,"price":"$1.96546","currency":"USD"},{"qty":2500,"price":"$1.86719","currency":"USD"},{"qty":5000,"price":"$1.79699","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What protection features does this regulator include?","answer":"Over-current, over-temperature, and reverse polarity protection are integrated. An enable control pin is also provided."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX38903AATB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX38903AATB 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}}