{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADP1109AAR-5","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADP1109AAR-5","canonicalUrl":"https://icboms.com/analog-devices/ADP1109AAR-5","factsUrl":"https://icboms.com/api/mcp/products/ADP1109AAR-5","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADP1109AAR-5, Step-Up DC-DC Converter, Boost Topology, Fixed 5V Output, 1.2A Switch, 120kHz Switching, 8-SOIC Surface Mount Package, 0°C to 70°C Operating Temperature.","salesMarkdown":"## What this boost converter does and where it fits The ADP1109AAR-5 is a fixed 5V step-up (boost) DC-DC converter from Analog Devices, designed to generate a regulated 5V rail from a lower input voltage. It integrates a 1.2A switch and switches at 120kHz, suiting it for battery-powered or low-voltage rail applications where a clean 5V output is needed without an external pass transistor. The input range spans 2V to 9V, so it can run from two alkaline cells, a single Li-ion, or a 5V bus that needs a regulated boost. The single positive output is fixed at 5V, which simplifies the BOM — no external feedback divider needed. No synchronous rectifier is used, so expect slightly lower efficiency at light loads compared to newer parts, but the simpler topology keeps the external component count low. Packaged in an 8-SOIC, this is a surface-mount part for standard PCB assembly. The operating temperature range is 0°C to 70°C, which covers commercial and most indoor industrial environments but not extended or automotive temperature grades. ## 1.2A switch current — what it means for your load The 1.2A switch current rating is the peak current the internal power transistor can handle. For a boost converter, the input current is higher than the output current. ## Lifecycle and compliance The ADP1109AAR-5 is listed as Active in production — no end-of-life notification or last-time-buy risk at this time, so it can be specified into new designs with confidence. Note that the part is RoHS non-compliant, so it is not suitable for builds requiring RoHS exemption-free compliance. For RoHS-compliant alternatives, the ADP1111 series (e.g., ADP1111ARZ) is a surface-mount option, though it uses an adjustable output and a lower 0.4A switch.","metaTitle":"ADP1109AAR-5 Step-Up DC-DC Converter, 5V Fixed Output","metaDescription":"ADP1109AAR-5 boost converter from Analog Devices: fixed 5V output, 1.2A switch, 120kHz switching, 8-SOIC. Active lifecycle, sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Package":"Bulk","Function":"Step-Up","Topology":"Boost","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Output":"1.2A (Switch)","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"120kHz","Operating Temperature":"0°C ~ 70°C","Synchronous Rectifier":"No","Voltage - Input (Max)":"9V","Voltage - Input (Min)":"2V","Supplier Device Package":"8-SOIC","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.49","stockQuantity":0,"priceTiers":[{"qty":614,"price":"$0.49000","currency":"USD"}]},"links":{"datasheetUrl":"https://rocelec.widen.net/view/pdf/jf0dcs0dwj/ANDIS07013-1.pdf?t.download=true&u=5oefqw","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy ADP1109AAR-5 and how is it quoted?","answer":"This part is sourced through independent distribution and is quoted to order against an RFQ. Submit a request for quote to confirm current availability and pricing for your target quantity."},{"question":"What is the closest functional second-source for ADP1109AAR-5?","answer":"The LT1305CS8#PBF from Analog Devices is a close functional second-source: it is also a fixed 5V boost converter in an 8-SOIC package, with a higher 2.5A switch current and 155kHz switching frequency. It is pin-compatible and can be qualified as a drop-in alternative for higher output current needs."},{"question":"What function does ADP1109AAR-5 perform?","answer":"It is a step-up (boost) DC-DC converter with a fixed 5V output. It takes an input voltage between 2V and 9V and produces a regulated 5V output at up to 1.2A switch current."},{"question":"Is ADP1109AAR-5 RoHS compliant?","answer":"No, the ADP1109AAR-5 is listed as RoHS non-compliant. It is not suitable for builds requiring RoHS exemption-free compliance. For a RoHS-compliant alternative, consider the ADP1111ARZ (adjustable output, 0.4A switch) or the LT1305CS8#PBF (fixed 5V, 2.5A switch, RoHS compliant)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADP1109AAR-5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADP1109AAR-5 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}}