{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ2057TTSTRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ2057TTSTRG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ2057TTSTRG4","factsUrl":"https://icboms.com/api/mcp/products/BQ2057TTSTRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ2057TTSTRG4, Li-Ion/Polymer battery charger IC, 2-cell, 8.2V battery pack voltage, programmable charge current, 8-TSSOP package, surface mount, -20°C to 70°C operating temperature.","salesMarkdown":"## 2-cell Li-ion/Polymer charger with programmable current The Texas Instruments BQ2057TTSTRG4 is a linear battery charger IC designed for 2-cell Lithium Ion or Lithium Polymer packs, delivering a regulated charge voltage of 8.2V. The charge current is constant and programmable via an external resistor, giving the BOM engineer control over the charge rate to match the cell capacity and thermal budget. ## 8.2V charge voltage — confirming the cell count The 8.2V battery pack voltage is the key fit parameter: it confirms this part is intended for a 2-series Li-ion configuration (2S), not a single cell (4.2V) or a 3-series pack (12.6V). The maximum supply input is 15V, which gives headroom for a typical 12V wall adapter or USB-C PD source. ## 8-TSSOP footprint and assembly Housed in an 8-TSSOP package with a 4.40mm body width and 0.65mm pin pitch, the BQ2057TTSTRG4 is a surface-mount device. The 8-TSSOP supplier device package matches the standard TSSOP-8 land pattern. No exposed thermal pad — the power dissipation is handled through the package body and PCB copper.","metaTitle":"BQ2057TTSTRG4 Li-Ion/Polymer Battery Charger IC, 8.2V","metaDescription":"Texas Instruments BQ2057TTSTRG4 Li-Ion/Polymer battery charger IC, 2-cell, 8.2V charge voltage, programmable current, 8-TSSOP, surface mount, active production.","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)","Interface":"-","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP (0.173\\\", 4.40mm Width)","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/BQ2057TTSTRG4/alternatives.json"},"ai":{"faq":[{"question":"Can BQ2057TTSTRG4 charge a 2-cell LiPo battery?","answer":"Yes, it is designed specifically for 2-cell Li-ion/Polymer packs. The 8.2V charge voltage and programmable current make it a direct fit for 2S configurations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ2057TTSTRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ2057TTSTRG4 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}}