{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ2057CDGKRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ2057CDGKRG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ2057CDGKRG4","factsUrl":"https://icboms.com/api/mcp/products/BQ2057CDGKRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ2057CDGKRG4, single-cell Li-Ion/Polymer linear charger IC, constant-current programmable, 4.2V battery pack voltage, 15V max supply, -20°C to 70°C, 8-VSSOP package.","salesMarkdown":"## Single-cell Li-Ion/Polymer linear charger — 4.2 V regulated output The Texas Instruments BQ2057CDGKRG4 is a linear charge-management IC designed for single-cell Lithium Ion or Lithium Polymer battery packs. It regulates the charge voltage to 4.2 V and uses a constant-current, constant-voltage (CC/CV) profile — the charge current is set by an external resistor, making it programmable rather than fixed. The device accepts a supply up to 15 V, which covers most 5 V USB adapters and 9–12 V wall-wart inputs. ## Package and mounting — 8-VSSOP on tape and reel It ships in Tape & Reel (TR) format, ready for automated pick-and-place assembly.","metaTitle":"BQ2057CDGKRG4 Li-Ion/Polymer Charger IC, 4.2V, 1-Cell","metaDescription":"Texas Instruments BQ2057CDGKRG4 single-cell Li-Ion/Polymer charger IC. Constant-current programmable, 4.2V pack voltage, 15V max input.","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, 8-MSOP (0.118\\\", 3.00mm Width)","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"-","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Base Product Number":"BQ2057","Battery Pack Voltage":"4.2V","Charge Current - Max":"-","Operating Temperature":"-20°C~70°C(TA)","Programmable Features":"Current","Voltage - Supply (Max)":"15V","Supplier Device Package":"8-VSSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fbq2057","sourceUrl":null},"ai":{"faq":[{"question":"What is the charge current for BQ2057CDGKRG4?","answer":"The charge current is constant and programmable — set by an external resistor connected to the PROG pin. The datasheet provides the resistor value vs. current table; the current is not fixed internally, so you select it per the battery capacity."},{"question":"Does BQ2057CDGKRG4 support Lithium Polymer batteries?","answer":"Yes, the BQ2057CDGKRG4 is specified for both Lithium Ion and Lithium Polymer chemistries. The 4.2 V regulated output matches the standard full-charge voltage for a single Li-Po cell."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ2057CDGKRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ2057CDGKRG4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}