{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ29703DSER","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ29703DSER","canonicalUrl":"https://icboms.com/texas-instruments/BQ29703DSER","factsUrl":"https://icboms.com/api/mcp/products/BQ29703DSER","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ29703DSER battery protection IC, single-cell Li-Ion/Polymer, 6-WFDFN / 6-WSON (1.5x1.5), over-current, over/under-voltage, short-circuit protection, -40°C to 85°C, Tape & Reel or Cut Tape.","salesMarkdown":"## Single-cell Li-Ion watchdog in a hand-solderable package The BQ29703DSER is a single-cell lithium-ion/polymer battery protection IC that monitors over-current, over-voltage, under-voltage, and short-circuit conditions. It sits between the battery cell and the load or charger, disconnecting the cell when any fault threshold is exceeded. ## Protection scope and temperature range The IC covers the three fault modes that most commonly damage a single Li-Ion cell: over-current (excessive discharge or charge current), over/under-voltage (cell voltage outside the safe window), and short-circuit (hard fault on the output). It's a dedicated protector, not a fuel gauge or charger controller — it sits in the discharge path and opens the FET when the cell is at risk. The 1-cell chemistry support is specific to Li-Ion and Li-Polymer — not NiMH or lead-acid. Available in Tape & Reel for automated assembly or Cut Tape for prototyping.","metaTitle":"BQ29703DSER Battery Protection IC, 1-Cell Li-Ion, 6-WSON","metaDescription":"Texas Instruments BQ29703DSER single-cell Li-Ion battery protection IC with over-current, over/under-voltage, and short-circuit protection.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Battery Protection","Mounting Type":"Surface Mount","Package / Case":"6-WFDFN","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Over Current, Over/Under Voltage, Short Circuit","Battery Chemistry":"Lithium Ion/Polymer","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"6-WSON (1.5x1.5)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.63","priceTiers":[{"qty":1,"price":"$0.63000","currency":"USD"},{"qty":10,"price":"$0.55300","currency":"USD"},{"qty":25,"price":"$0.51920","currency":"USD"},{"qty":100,"price":"$0.42370","currency":"USD"},{"qty":250,"price":"$0.39356","currency":"USD"},{"qty":500,"price":"$0.33496","currency":"USD"},{"qty":1000,"price":"$0.26797","currency":"USD"},{"qty":3000,"price":"$0.24285","currency":"USD"},{"qty":6000,"price":"$0.23700","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0bbd4cda7b462f65f5ea3ddcb62ff548.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ29703DSER/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source — BQ296217DSGT?","answer":"The BQ296217DSGT is a different part: it protects 2 to 4 cells and only monitors over-voltage faults, whereas the BQ29703DSER protects a single cell against over-current, over/under-voltage, and short-circuit. They are not drop-in replacements — the cell count and fault coverage differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ29703DSER","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ29703DSER 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}}