{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ2057WTS","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ2057WTS","canonicalUrl":"https://icboms.com/texas-instruments/BQ2057WTS","factsUrl":"https://icboms.com/api/mcp/products/BQ2057WTS","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ2057WTS linear Li-Ion/Polymer charger IC, 2-cell, 8.4V battery pack voltage, programmable charge current, -20°C to 70°C, 8-TSSOP package, Tube.","salesMarkdown":"## 2-cell Li-Ion linear charger with programmable current The Texas Instruments BQ2057WTS is a linear battery charger IC designed for 2-series Lithium-Ion or Lithium-Polymer packs, terminating at 8.4V. It operates from a supply up to 15V and delivers a constant charging current that the designer sets with a single external resistor — no I2C or SMBus needed. ## Programmable current and 8.4V termination The charge current is constant and programmable — the designer picks the resistor value to set the current level for the battery capacity. The charger terminates at 8.4V, the full-charge voltage for a 2-cell Li-Ion or Li-Poly stack. The only programmable feature is current; there is no digital interface, no timer, and no temperature-qualified termination. The charger relies on the external resistor and the internal voltage-regulation loop to end the charge cycle.","metaTitle":"BQ2057WTS Li-Ion/Li-Poly Charger IC, 8.4V, 8-TSSOP","metaDescription":"Texas Instruments BQ2057WTS linear charger IC for 2-cell Li-Ion/Polymer packs. 8.4V termination, programmable current, -20°C to 70°C, 8-TSSOP.","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":"Tube","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":"8.4V","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":"$4.1100","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ2057WTS/alternatives.json"},"ai":{"faq":[{"question":"What is the charging current of BQ2057WTS?","answer":"The charging current is constant and programmable, set by an external resistor. The datasheet provides the resistor-value formula for the desired current level."},{"question":"Is BQ2057WTS compatible with 8.4V batteries?","answer":"Yes — the BQ2057WTS terminates at 8.4V, which is the full-charge voltage for a 2-cell Lithium-Ion or Lithium-Polymer pack."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ2057WTS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ2057WTS 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}}