{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT3042MPDD#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT3042MPDD~4PBF","canonicalUrl":"https://icboms.com/analog-devices/LT3042MPDD~4PBF","factsUrl":"https://icboms.com/api/mcp/products/LT3042MPDD%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT3042MPDD#PBF, adjustable positive LDO regulator, 200 mA output, 20 V max input, 117 dB typical PSRR at 120 Hz, -55°C to 150°C operating range, 10-DFN (3x3) package, tube.","salesMarkdown":"## 117 dB PSRR across 120 Hz to 10 MHz — the noise floor decision The LT3042MPDD#PBF is an adjustable positive LDO from Analog Devices delivering 200 mA output with a PSRR that starts at 117 dB at 120 Hz and rolls off to 56 dB at 10 MHz. That bandwidth coverage means it suppresses both line-frequency ripple and the switching noise from a downstream DC-DC converter — the regulator itself becomes the filter, not just a post-regulator. For a precision analog rail feeding a 16-bit ADC or a VCO, the 117 dB at 120 Hz is what keeps 50/60 Hz hum out of the signal chain. This is the same die as the industrial-grade LT3042IDD#PBF (-40°C to 125°C), but the extended low end matters for cold-start avionics or outdoor telecom gear that sees -40°C ambient with self-heating margin. The high end at 150°C junction gives headroom in a 105°C ambient enclosure with the regulator dissipating near its thermal limit. Without it, the junction-to-ambient thermal resistance rises and the 150°C rating becomes academic at any real load. ## Protection set: over-temp and reverse polarity, not just current limit The LT3042MPDD#PBF includes current limit, enable, and power-good output, plus over-temperature shutdown and reverse-polarity protection. The reverse-polarity feature is unusual for an LDO — it protects the regulator and downstream load if the input rail is accidentally reversed, which saves an external Schottky diode in battery-powered or field-wired designs. Lifecycle status is active per Analog Devices — this is a current-production part suitable for new designs.","metaTitle":"LT3042MPDD#PBF Analog Devices LDO, 200mA, 117dB PSRR","metaDescription":"LT3042MPDD#PBF from Analog Devices: 200mA adjustable LDO, 117dB~56dB PSRR (120Hz-10MHz), -55°C to 150°C, 10-DFN. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"117dB ~ 56dB (120Hz ~ 10MHz)","Package":"Tube","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"10-WFDFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Current Limit, Enable, Power Good","Current - Output":"200mA","Protection Features":"Over Temperature, Reverse Polarity","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-55°C ~ 150°C","Voltage - Input (Max)":"20V","Voltage Dropout (Max)":"0.35V @ 200mA (Typ)","Voltage - Output (Max)":"15V","Supplier Device Package":"10-DFN (3x3)","Voltage - Output (Min/Fixed)":"0V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$15.36","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$15.36000","currency":"USD"},{"qty":10,"price":"$14.11600","currency":"USD"},{"qty":25,"price":"$13.53080","currency":"USD"},{"qty":100,"price":"$11.92180","currency":"USD"},{"qty":250,"price":"$11.33672","currency":"USD"},{"qty":500,"price":"$10.60530","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of the LT3042MPDD#PBF and over what frequency range?","answer":"The LT3042MPDD#PBF provides 117 dB typical PSRR at 120 Hz, rolling off to 56 dB at 10 MHz. This covers both mains hum and switching-regulator noise across the full audio and low-MHz band."},{"question":"How does the LT3042MPDD#PBF differ from the LT3042IDD#PBF?","answer":"Both share the same 200 mA output, 117 dB PSRR, and 10-DFN package — the temp range is the only parametric difference. The LT3042MPDD#PBF drops into the same PCB footprint as the IDD variant without rewiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT3042MPDD~4PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT3042MPDD~4PBF 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}}