{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADP1147AN-3.3","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADP1147AN-3.3","canonicalUrl":"https://icboms.com/analog-devices/ADP1147AN-3.3","factsUrl":"https://icboms.com/api/mcp/products/ADP1147AN-3.3","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADP1147AN-3.3 step-down switching regulator, buck topology, non-synchronous, transistor driver output, 8-PDIP through-hole package, 0°C to 70°C commercial temperature range.","salesMarkdown":"## Buck controller in an 8-pin DIP — what you're getting The ADP1147AN-3.3 is a step-down (buck) switching regulator controller from Analog Devices, designed to drive an external N-channel transistor. It operates as a non-synchronous buck with a single output phase, configured for positive output voltage. The controller integrates current limiting, enable control, and frequency adjustment via the Frequency Control pin. Housed in an 8-pin PDIP (0.300\" body, 7.62 mm pitch) with through-hole mounting, this part targets legacy or low-density board designs where SMT reflow is not available or preferred. The supply range spans 3.5 V to 16 V on Vcc/Vdd, and the switching frequency reaches up to 250 kHz — typical for mid-1990s buck controllers, allowing the use of larger inductors and through-hole magnetics. ## Temperature grade and deployment boundary Rated for 0°C to 70°C ambient (TA), this is a commercial-grade part. ## Lifecycle and sourcing reality However, it is marked RoHS non-compliant, which limits its use in designs requiring Pb-free assembly. For new builds with RoHS mandates, a lead-free alternative or a waiver is needed. No official second source or direct successor is recorded in the ledger; the closest functional peer is the surface-mount ADP1864AUJZ-R7, which operates at higher frequency (580 kHz) and wider temperature range (-40°C to 125°C), but is not pin-compatible due to package difference. ## What the switching frequency and supply range mean for your BOM The 250 kHz maximum switching frequency sets the inductor size and output capacitor ripple. The non-synchronous topology means an external Schottky catch diode is required; efficiency suffers at low output voltages compared to synchronous designs, but the controller is simpler and cheaper.","metaTitle":"ADP1147AN-3.3 Step-Down Buck Controller, 8-PDIP, Active","metaDescription":"ADP1147AN-3.3 step-down switching regulator, buck topology, up to 250 kHz, 3.5V-16V supply, 8-PDIP through-hole. Active status, RoHS non-compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Bulk","Function":"Step-Down","Topology":"Buck","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Through Hole","Output Phases":"1","Package / Case":"8-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Control Features":"Current Limit, Enable, Frequency Control","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"Up to 250kHz","Operating Temperature":"0°C ~ 70°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"8-PDIP","Voltage - Supply (Vcc/Vdd)":"3.5V ~ 16V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.64","stockQuantity":0,"priceTiers":[{"qty":466,"price":"$0.64000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/20d885f5b95b0f695221c63c64da1a52.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum switching frequency of ADP1147AN-3.3?","answer":"The switching frequency is rated up to 250 kHz. This is set by an external RC network on the Frequency Control pin."},{"question":"What package is ADP1147AN-3.3 available in?","answer":"The ADP1147AN-3.3 comes in an 8-pin PDIP (0.300\" body, 7.62 mm pitch), through-hole mounting. The supplier device package is 8-PDIP."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADP1147AN-3.3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADP1147AN-3.3 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}}