{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC1728HS5-5#TRMPBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC1728HS5-5TRMPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC1728HS5-5TRMPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC1728HS5-5%23TRMPBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC1728HS5-5#TRMPBF, Multi-Voltage Supervisor, 3 channels monitored, Active Low reset, Open Drain output, 140ms minimum reset timeout, thresholds 3.086V, 4.675V, Adj, TSOT-23-5 package, -40°C to 125°C operating temperature.","salesMarkdown":"## Three-rail supervisor in a five-pin SOT The LTC1728HS5-5#TRMPBF from Analog Devices is a multi-voltage supervisor that keeps an eye on three supply rails at once. It monitors thresholds at 3.086 V and 4.675 V, plus a third adjustable input for whatever other rail you need to watch. The open-drain, active-low reset output pulls low for a minimum of 140 ms when any monitored voltage drops below its threshold, then releases after the timeout once all rails are good. That three-in-one package saves board space and a couple of external comparators on a multi-rail design. ## What the thresholds mean for your rails The fixed 3.086 V threshold is a natural fit for a 3.3 V rail — it trips at roughly 93.5% of nominal, which is a common undervoltage detection point for logic supplies. The 4.675 V threshold suits a 5 V rail, tripping at about 93.5% as well. The adjustable input lets you set any threshold down to 0.6 V with a resistor divider, so you can monitor a 1.8 V or 2.5 V rail alongside the fixed ones. That covers the typical power tree in a mixed-voltage system without needing a separate supervisor per rail. ## Temperature range and where it goes Rated for -40°C to 125°C, this supervisor works in industrial enclosures, outdoor telecom cabinets, and under-hood automotive zones where the ambient swings hard. The TSOT-23-5 package is small enough for space-constrained PCBs but still hand-solderable for rework. The open-drain output lets you wire-OR multiple supervisors or pull up to a different voltage than the monitored rails, which is handy in mixed-logic designs. ## Lifecycle and sourcing reality ROHS3 compliant.","metaTitle":"LTC1728HS5-5#TRMPBF Multi-Voltage Supervisor, 3 Channels","metaDescription":"LTC1728HS5-5#TRMPBF Multi-Voltage Supervisor monitors 3 rails with thresholds 3.086V, 4.675V, Adj. Active Low reset, 140ms timeout, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"Multi-Voltage Supervisor","Reset":"Active Low","Output":"Open Drain or Open Collector","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"140ms Minimum","Package / Case":"SOT-23-5 Thin, TSOT-23-5","lifecycle_stage":"eol_hot","Voltage - Threshold":"3.086V, 4.675V, Adj","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"TSOT-23-5","Number of Voltages Monitored":"3"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.75","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.75000","currency":"USD"},{"qty":10,"price":"$5.16800","currency":"USD"},{"qty":25,"price":"$4.88600","currency":"USD"},{"qty":100,"price":"$4.23440","currency":"USD"},{"qty":250,"price":"$4.01728","currency":"USD"},{"qty":500,"price":"$3.60468","currency":"USD"},{"qty":1000,"price":"$3.04010","currency":"USD"},{"qty":2500,"price":"$2.88810","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4aa99f2fcd42e9b91e09b4e5363d59e1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the reset timeout of LTC1728HS5-5#TRMPBF?","answer":"The reset timeout is a minimum of 140 ms. After all monitored voltages rise above their thresholds, the reset output stays low for at least 140 ms before releasing, giving the system time to stabilize."},{"question":"Can LTC1728HS5-5#TRMPBF monitor a 3.3V rail?","answer":"Yes. The fixed 3.086 V threshold is designed to monitor a 3.3 V supply, tripping when the rail drops to about 93.5% of nominal. The adjustable input can also be set to monitor a 3.3 V rail with a resistor divider."},{"question":"What is the closest functional second-source for LTC1728HS5-5#TRMPBF?","answer":"The ADM6710 series from Analog Devices (e.g., ADM6710QARJZ-REEL7, ADM6710BARJZ-REEL7, ADM6710EARJZ-REEL7) is a pin-compatible multi-voltage supervisor with the same active-low reset, open-drain output, 140 ms reset timeout, and -40°C to 125°C temperature range. The threshold voltages differ, so check the specific variant against your rail voltages before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC1728HS5-5TRMPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC1728HS5-5TRMPBF 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}}