{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX14921ECS+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX14921ECS","canonicalUrl":"https://icboms.com/analog-devices/MAX14921ECS","factsUrl":"https://icboms.com/api/mcp/products/MAX14921ECS%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices MAX14921ECS+ multi-chemistry battery monitor, 1 to 16 cells, SPI interface, over/under voltage and over-temperature protection, 80-TQFP package, -40°C to +85°C.","salesMarkdown":"## What the 1-to-16 cell range means for your BMS The MAX14921ECS+ monitors 1 to 16 series cells in a single IC — that covers everything from a 4S li-ion pack up to a 48 V nominal battery string without stacking multiple monitors. The SPI interface reads back individual cell voltages, so the host MCU sees the stack profile, not just the pack terminal voltage. ## Protection and temperature range On-chip fault protection catches over-temperature and over/under voltage conditions — these are the hard limits that keep the battery from venting or the load from browning out. Multi-chemistry support means the same monitor handles Li-ion, LiFePO4, lead-acid, or NiMH — the cell-voltage thresholds are set by the host firmware over SPI, not by a fixed divider. That flexibility saves a BOM spin when the pack chemistry changes.","metaTitle":"MAX14921ECS+ Battery Monitor, 1-16 Cells, SPI, 80-TQFP","metaDescription":"MAX14921ECS+ Analog Devices multi-chemistry battery monitor, 1-16 cells, SPI interface, fault protection, -40°C to +85°C, 80-TQFP. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tray","Function":"Battery Monitor","Interface":"SPI","Mounting Type":"Surface Mount","Package / Case":"80-TQFP","Number of Cells":"1 ~ 16","lifecycle_stage":"eol_hot","Fault Protection":"Over Temperature, Over/Under Voltage","Battery Chemistry":"Multi-Chemistry","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"80-TQFP (12x12)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$15.89","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$15.89000","currency":"USD"},{"qty":10,"price":"$14.60000","currency":"USD"},{"qty":25,"price":"$13.99520","currency":"USD"},{"qty":119,"price":"$12.33076","currency":"USD"},{"qty":238,"price":"$11.72559","currency":"USD"},{"qty":476,"price":"$10.96910","currency":"USD"},{"qty":952,"price":"$10.06131","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX14921ECS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX14921ECS 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}}