{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX8934AETI+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX8934AETI","canonicalUrl":"https://icboms.com/analog-devices/MAX8934AETI","factsUrl":"https://icboms.com/api/mcp/products/MAX8934AETI%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated Smart Power Selector™ series, MAX8934AETI+, single-cell Li-Ion/Polymer linear battery charger IC, 1.5A max programmable charge current, 4.2V battery regulation voltage, USB interface, over-voltage protection, -40°C to 85°C, 28-TQFN (4x4 mm) exposed-pad package.","salesMarkdown":"## Single-cell Li-Ion charger with USB input and over-voltage protection The MAX8934AETI+ from Maxim Integrated is a single-cell Li-Ion/Polymer linear battery charger IC in the Smart Power Selector™ family. It accepts a USB or adapter input up to 6.6V and delivers a programmable constant-current charge up to 1.5A to a 4.2V battery pack. The device integrates over-voltage fault protection on the input, and the charge current and timer are programmable via external components. The operating temperature range of -40°C to 85°C suits it for industrial portable equipment, handheld instruments, and outdoor IoT nodes where the charger must survive cold starts and hot enclosures. ## 1.5A charge current — sizing the power path The 1.5A maximum charge current is the rating that drives the thermal design. In a 28-WFQFN exposed-pad package, the linear regulator drops the input-to-battery voltage as heat, so at full current with a 5V input and a depleted 3.0V cell, the power dissipation is roughly 3W. That demands a solid thermal via array under the exposed pad to keep the junction temperature within the -40°C to 85°C operating range. For lower dissipation, the current is programmable — the constant-current loop lets you set a lower limit with a single resistor, which is the usual move when charging from a USB port that may share a 500 mA budget. ## Active production — no LTB pressure The MAX8934AETI+ carries an active lifecycle status, so there is no last-time-buy clock running on this part. It is ROHS3 compliant, meeting the current exemption-free RoHS directive. For a new design going into production, this means the charger IC is not a supply-chain risk item — you can qualify it into the BOM without planning for an end-of-life migration within the product's expected run. ## Package and footprint notes The device is supplied in a 28-WFQFN with exposed pad, surface-mount package, and the supplier device package is a 28-TQFN measuring 4x4 mm. The exposed pad is the primary thermal path — the PCB layout must include a thermal via pattern under the pad to the ground plane. The package is compatible with standard reflow profiles for MSL-rated QFN packages.","metaTitle":"MAX8934AETI+ Li-Ion Battery Charger IC, 1.5A Max, 28-TQFN","metaDescription":"Maxim MAX8934AETI+ Smart Power Selector™ single-cell Li-Ion/Polymer charger IC.","metaKeywords":null},"attributes":{"series":"Smart Power Selector™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Series":"Smart Power Selector™","Package":"Tube","Interface":"USB","Mounting Type":"Surface Mount","Package / Case":"28-WFQFN Exposed Pad","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Over Voltage","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Battery Pack Voltage":"4.2V","Charge Current - Max":"1.5A","Operating Temperature":"-40°C ~ 85°C (TA)","Programmable Features":"Current, Timer","Voltage - Supply (Max)":"6.6V","Supplier Device Package":"28-TQFN (4x4)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.03","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.03000","currency":"USD"},{"qty":10,"price":"$5.45000","currency":"USD"},{"qty":25,"price":"$5.19680","currency":"USD"},{"qty":100,"price":"$4.51250","currency":"USD"},{"qty":250,"price":"$4.30968","currency":"USD"},{"qty":500,"price":"$3.92940","currency":"USD"},{"qty":1000,"price":"$3.42238","currency":"USD"},{"qty":2500,"price":"$3.29563","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/410b51c800281b7f595a84e2e3cdc83d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum charge current for MAX8934AETI+?","answer":"The MAX8934AETI+ supports a programmable constant-current charge up to 1.5A maximum. The charge current is set by an external resistor and can be adjusted lower than 1.5A as needed."},{"question":"Is MAX8934AETI+ compatible with lithium polymer batteries?","answer":"Yes, the MAX8934AETI+ is designed for both Lithium Ion and Lithium Polymer chemistries, charging a single cell to 4.2V."},{"question":"What package does MAX8934AETI+ come in?","answer":"It comes in a 28-WFQFN exposed-pad package, surface-mount, with a supplier device package of 28-TQFN measuring 4x4 mm."},{"question":"Does MAX8934AETI+ have a lead-free option?","answer":"The MAX8934AETI+ is ROHS3 compliant, meeting the current RoHS directive without exemptions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX8934AETI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX8934AETI 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}}