{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC3422EDD#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC3422EDDPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC3422EDDPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC3422EDD%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC3422EDD#PBF step-up DC-DC converter, boost topology, adjustable output 2.25-5.25 V, 1.5 A switch, synchronous rectification, 10-WFDFN exposed pad, tube.","salesMarkdown":"## 10-DFN package with exposed pad — the board-level integration story The LTC3422EDD#PBF comes in a 10-lead WFDFN with an exposed pad (3×3 mm footprint). That pad is the primary thermal path — it must be soldered to a copper plane on the PCB to keep the junction temperature within the -40 to +85 °C operating range under load. The 0.5 mm pitch demands a well-planned fan-out; the inner pins connect to the pad via short traces to minimise parasitic inductance in the switching loop. ## 0.5 V to 4.5 V input, 1.5 A switch — what the boost rating means for your rail This is a synchronous step-up converter that starts from an input as low as 0.5 V — think single-cell alkaline or Li-ion that has discharged deep. The internal switch is rated for 1.5 A peak current; that figure sets the maximum output power before the switch current limit engages. At a 3.3 V output from a 1.8 V input, the switch duty cycle is about 45 %, and the 1.5 A limit translates to roughly 900 mA output before foldback — assuming reasonable inductor selection and layout. The synchronous rectifier (the low-side MOSFET replaced by a switch) improves efficiency at lower output voltages compared to a diode-based boost. At 2.5 V out, the voltage drop across a Schottky would eat 10-15 % of the output; the synchronous FET keeps that loss to the Rds(on) times the inductor current. ## 100 kHz to 3 MHz switching frequency — size vs. efficiency trade-off The switching frequency is programmable from 100 kHz to 3 MHz via a resistor on the RT pin. Lower frequencies (100-300 kHz) give better efficiency because switching losses scale with frequency, but require larger inductors and output capacitors. At 3 MHz the external components shrink to 0603 or 0805 sizes — useful for space-constrained designs — but the efficiency drops by 5-8 % depending on load. The frequency also sets the output ripple; at 3 MHz the ripple amplitude is lower for the same output capacitance, which helps in noise-sensitive loads. ## Adjustable output from 2.25 V to 5.25 V — the feedback divider sets the rail The output is adjustable via an external resistor divider from a 0.6 V internal reference. The minimum output is 2.25 V (the reference plus headroom for the error amplifier), and the maximum is 5.25 V — limited by the absolute maximum rating of the output pin. For a 3.3 V rail, a standard 1% divider with 10 kΩ upper and 4.42 kΩ lower resistor works. The single-output configuration means one feedback network per converter. ## Active production, RoHS3 — sourcing posture The LTC3422EDD#PBF carries an active lifecycle status from Analog Devices. It is RoHS3 compliant (lead-free, no exemptions). Sourced through independent distribution channels; quoted to order against BOM quantities. No official second-source or pin-compatible alternative is recorded — the 10-DFN package and pinout are unique to this part within the LTC3422 family.","metaTitle":"LTC3422EDD#PBF Boost Converter, 1.5A Switch, 10-DFN","metaDescription":"Active Analog Devices LTC3422EDD#PBF step-up DC-DC converter. 0.5-4.5V input, adjustable 2.25-5.25V output, 1.5A switch, synchronous rectification, 10-WFDFN.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Function":"Step-Up","Topology":"Boost","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"10-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Output":"1.5A (Switch)","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"100kHz ~ 3MHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"4.5V","Voltage - Input (Min)":"0.5V","Voltage - Output (Max)":"5.25V","Supplier Device Package":"10-DFN (3x3)","Voltage - Output (Min/Fixed)":"2.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.65","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.65000","currency":"USD"},{"qty":10,"price":"$7.81700","currency":"USD"},{"qty":25,"price":"$7.45360","currency":"USD"},{"qty":121,"price":"$6.47207","currency":"USD"},{"qty":363,"price":"$6.18121","currency":"USD"},{"qty":605,"price":"$5.63580","currency":"USD"},{"qty":1089,"price":"$4.90860","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a4833a073ad1e0bdbeae36b8e89945f6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LTC3422EDD#PBF?","answer":"No pin-compatible alternative is recorded for the LTC3422EDD#PBF within the Analog Devices LTC3422 family. The 10-DFN package and pinout are specific to this order code. For a functional equivalent with a different package, the LTC3422EMS8E#PBF (MSOP-8E) offers similar boost specs but requires a board layout change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC3422EDDPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC3422EDDPBF 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}}