{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24157YFFT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24157YFFT","canonicalUrl":"https://icboms.com/texas-instruments/BQ24157YFFT","factsUrl":"https://icboms.com/api/mcp/products/BQ24157YFFT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24157YFFT, single-cell Lithium Ion/Polymer battery charger IC, I²C programmable charge current up to 1.55 A, 20-DSBGA package, active production.","salesMarkdown":"## Charge current ceiling and I²C programmability The BQ24157YFFT delivers a maximum charge current of 1.55 A for a single-cell Li-Ion or Li-Polymer stack. That 1.55 A is the constant-current ceiling — the actual charge rate is set via the I²C interface, so you can dial it down for smaller cells or thermal budget without swapping a sense resistor. ## Battery termination and protection limits The charger regulates the battery pack voltage to a maximum of 4.44 V — this is the termination ceiling for a standard 4.2 V Li-Ion cell with a small overvoltage allowance. On-chip fault protection covers over-temperature and over-voltage conditions, which means the IC can shut itself down without a supervisory watchdog. ## Package, supply, and temperature range Housed in a 20-ball DSBGA (20-DSBGA) package, the BQ24157YFFT is a true chip-scale footprint — the 0.4 mm ball pitch demands careful PCB layout and a solder mask defined pad. Supply voltage max is 6 V, which comfortably covers a 5 V USB input. The operating temperature range is -30°C to 85°C, suitable for consumer and industrial portable gear. This part is sourced to order — we confirm current pricing and lead time against your BOM quantity at quote time.","metaTitle":"BQ24157YFFT Texas Instruments Li-Ion Charger IC – 1.55 A","metaDescription":"BQ24157YFFT single-cell Li-Ion/Polymer charger with I²C programmable current up to 1.55 A. Active status, 20-DSBGA package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Interface":"I²C","Mounting Type":"Surface Mount","Package / Case":"20-UFBGA, DSBGA","Product Status":"Active","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Over Temperature, Over Voltage","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Base Product Number":"BQ24157","Battery Pack Voltage":"4.44V (Max)","Charge Current - Max":"1.55A","Operating Temperature":"-30°C~85°C(TA)","Programmable Features":"Current","Voltage - Supply (Max)":"6V","Supplier Device Package":"20-DSBGA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.3600","priceTiers":[{"qty":1,"price":"$2.36000","currency":"USD"},{"qty":10,"price":"$2.12400","currency":"USD"},{"qty":25,"price":"$2.00320","currency":"USD"},{"qty":100,"price":"$1.70690","currency":"USD"},{"qty":250,"price":"$1.60272","currency":"USD"},{"qty":500,"price":"$1.40238","currency":"USD"},{"qty":1250,"price":"$1.16197","currency":"USD"},{"qty":2500,"price":"$1.13400","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a0e4a85350ae46f92781d2ccf269b93d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ24157YFFT/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum charge current of BQ24157YFFT?","answer":"The maximum charge current is 1.55 A, programmable via I²C. The actual current is set by writing a register — no external resistor change needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24157YFFT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24157YFFT 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}}