{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ25155YFPT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ25155YFPT","canonicalUrl":"https://icboms.com/texas-instruments/BQ25155YFPT","factsUrl":"https://icboms.com/api/mcp/products/BQ25155YFPT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ25155YFPT linear battery charger, single-cell, I²C programmable, 500 mA max charge current, 4.6V max battery voltage, 20-bump DSBGA package, Tape & Reel.","salesMarkdown":"## 500 mA programmable charge current — the BOM-fit ceiling The BQ25155YFPT is a single-cell linear charger with a 500 mA maximum charge current. That is the hard ceiling — the actual charge rate is set via I²C registers, so the same PCB can serve a 100 mA earbud cradle and a 450 mA wearable dock by changing the firmware, not the resistor divider. Battery regulation voltage tops out at 4.6 V, which covers standard Li-ion (4.2 V) and Li-Poly (4.35 V) cells, plus LiFePO4 at lower termination voltages — the I²C registers select the target per chemistry. ## Input rail and protection envelope Maximum supply voltage is 5.25 V — a standard USB VBUS at 5.0 V nominal sits inside the window, but a hot-plug transient or a 5.25 V adapter rail is the abs-max. The integrated fault protection covers over-current, over-temperature, over-voltage, and short-circuit on the output, so the charge path is self-protecting against a failed cell or a miswired pack. A portable medical monitor or a handheld scanner that sees a hot dashboard in summer stays within the junction rating. ## 20-bump DSBGA — board integration note The part is housed in a 20-bump DSBGA — 0.4 mm pitch, no exposed thermal pad. The PCB must support fine-line fan-out between bumps; a four-layer stack-up with microvias is typical for the escape routing. The stencil aperture for each bump should match the TI recommended land pattern in the datasheet to avoid solder bridging. Cut Tape works for prototyping or low-volume builds.","metaTitle":"TI BQ25155YFPT I²C Linear Charger, 500 mA, 20-DSBGA","metaDescription":"Texas Instruments BQ25155YFPT single-cell linear charger, 500 mA max charge current, I²C interface, 20-bump DSBGA package. Active production, sourced to order.","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":"I²C","Mounting Type":"Surface Mount","Package / Case":"20-XFBGA, DSBGA","Product Status":"Active","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Over Current, Over Temperature, Over Voltage, Short Circuit","Battery Chemistry":"Multi-Chemistry","Current - Charging":"Constant - Programmable","Base Product Number":"BQ25155","Battery Pack Voltage":"4.6V (Max)","Charge Current - Max":"500mA","Operating Temperature":"-40°C~85°C(TA)","Programmable Features":"Current, Voltage","Voltage - Supply (Max)":"5.25V","Supplier Device Package":"20-DSBGA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.7400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/55af868ef1473fa47c552e219a8acf78.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ25155YFPT/alternatives.json"},"ai":{"faq":[{"question":"What is the charge current ceiling for BQ25155YFPT?","answer":"The maximum charge current is 500 mA, programmable via the I²C interface. The actual current is set in the charger's register map, not by an external resistor."},{"question":"What battery chemistries does BQ25155YFPT support?","answer":"The charger supports Multi-Chemistry cells — Li-ion, Li-Poly, and LiFePO4. The I²C registers set the termination voltage per chemistry, up to a maximum battery pack voltage of 4.6 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ25155YFPT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ25155YFPT 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}}