{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ2057TTSTR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ2057TTSTR","canonicalUrl":"https://icboms.com/texas-instruments/BQ2057TTSTR","factsUrl":"https://icboms.com/api/mcp/products/BQ2057TTSTR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ2057TTSTR Li-Ion/Polymer charge management IC, 2-cell series, 8.2V battery pack voltage, programmable constant-current, 8-TSSOP surface-mount package, -20°C to 70°C operating temperature.","salesMarkdown":"## 2-cell Li-ion charger with programmable current The Texas Instruments BQ2057TTSTR is a charge management IC designed specifically for 2-series Lithium Ion or Lithium Polymer battery packs. It delivers a regulated 8.2 V battery pack voltage and supports constant-current charging that is programmable via an external resistor — no I²C or SMBus needed, just a resistor to set the charge rate. It is not rated for extended outdoor exposure or under-hood automotive use without additional thermal derating analysis.","metaTitle":"BQ2057TTSTR Li-Ion/Polymer Charger IC, 8.2V 2-Cell, 8-TSSOP","metaDescription":"Texas Instruments BQ2057TTSTR is a Li-Ion/Polymer charge management IC for 2-cell series packs. 8.2V battery pack voltage, programmable current, -20°C to 70°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Interface":"-","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP (0.173\\\", 4.40mm Width)","Product Status":"Active","Number of Cells":"2","lifecycle_stage":"eol_hot","Fault Protection":"-","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Base Product Number":"BQ2057","Battery Pack Voltage":"8.2V","Charge Current - Max":"-","Operating Temperature":"-20°C~70°C(TA)","Programmable Features":"Current","Voltage - Supply (Max)":"15V","Supplier Device Package":"8-TSSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.4200","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ2057TTSTR/alternatives.json"},"ai":{"faq":[{"question":"Is BQ2057TTSTR compatible with single cell batteries?","answer":"No — this part is designed for 2-series cells (8.2 V pack voltage). It is not compatible with single-cell (4.2 V) or 3-series (12.6 V) configurations without external level shifting."},{"question":"What is the charge current range for BQ2057TTSTR?","answer":"The charge current is constant-current and programmable via an external resistor. The datasheet defines the resistor value vs. current relationship; the maximum current is limited by the package thermal dissipation and the 15 V supply ceiling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ2057TTSTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ2057TTSTR 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}}