{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24156AYFFT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24156AYFFT","canonicalUrl":"https://icboms.com/texas-instruments/BQ24156AYFFT","factsUrl":"https://icboms.com/api/mcp/products/BQ24156AYFFT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24156AYFFT, single-cell Li-Ion/Polymer battery charger, I²C interface, programmable charge current up to 1.55A, 4.44V max pack voltage, 20-DSBGA package, -30°C to 85°C operation.","salesMarkdown":"## Single-cell Li-Ion charger with I²C programmability The Texas Instruments BQ24156AYFFT is a single-cell Li-Ion/Polymer battery charger with an I²C interface for programmable charge current and timer control. It delivers a programmable charge current up to 1.55 A and supports a maximum battery pack voltage of 4.44 V, making it a fit for portable devices using standard 4.2 V or 4.35 V Li-ion cells. ## NRND — plan your replacement now This means TI has flagged the part for eventual discontinuation; new designs should not start with this charger, and existing BOMs should identify a replacement or last-time-buy strategy. No official replacement part number is listed on the record. For a pin-compatible or functional alternative, the buyer should cross-reference the BQ24156 family or consult TI's product-change notifications. ## 20-DSBGA package — reflow and footprint notes The BQ24156AYFFT is supplied in a 20-bump DSBGA package (20-UFBGA, DSBGA case code), with the supplier device package listed as 20-DSBGA. This is a wafer-level chip-scale package — the bumps are on the bottom of the die, no plastic overmold. For the EMS engineer: DSBGA packages require careful stencil design (typically 0.125 mm or thinner stencil with aperture matching the bump diameter), a reflow profile that avoids excessive thermal shock, and MSL handling per the TI label. The board footprint must match the TI-recommended land pattern — the bump pitch is fine enough that a misaligned stencil causes opens. No tombstoning risk with a single-die package, but the small bump area means the part is sensitive to board flex. The maximum charge current of 1.55 A sets the charge-rate ceiling for the single cell. For a typical 2000 mAh Li-ion cell, this is a 0.77C rate — fast enough for most portable devices but not a high-current quick-charge part. The programmable current (via I²C) lets the firmware adjust the rate for thermal management or USB input current limits. The 4.44 V maximum battery pack voltage covers both 4.2 V and 4.35 V termination targets. The I²C interface allows the host to set the float voltage and charge timer, and to read back fault status. The supply voltage max is 9 V — compatible with 5 V USB or 9 V wall adapters.","metaTitle":"BQ24156AYFFT Li-Ion Charger, I²C, 1.55A, 20-DSBGA, NRND","metaDescription":"Texas Instruments BQ24156AYFFT single-cell Li-Ion/Polymer charger with I²C interface, 1.55A max charge current, 4.44V max pack voltage.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","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":"Not For New Designs","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":"BQ24156","Battery Pack Voltage":"4.44V (Max)","Charge Current - Max":"1.55A","Operating Temperature":"-30°C~85°C(TA)","Programmable Features":"Current, Timer","Voltage - Supply (Max)":"9V","Supplier Device Package":"20-DSBGA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.2600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8333ed4f6741e67d65ac076ac876724f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BQ24156AYFFT obsolete or NRND?","answer":"It is not yet discontinued, but TI advises against using it in new product designs. Existing designs should plan for a replacement or secure last-time-buy inventory."},{"question":"What is the replacement for BQ24156AYFFT?","answer":"No official replacement part number is recorded for the BQ24156AYFFT. The buyer should check the BQ24156 family for a pin-compatible or functional alternative, or consult TI's product-change notifications."},{"question":"Does BQ24156AYFFT support I²C control?","answer":"Yes, the BQ24156AYFFT uses an I²C interface for programming the charge current and timer, and for reading fault status. This allows the host microcontroller to dynamically adjust charging parameters."},{"question":"What is the maximum charge current of BQ24156AYFFT?","answer":"The maximum charge current is 1.55 A. The charge current is programmable via I²C, so the firmware can set it lower for thermal management or input current limits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24156AYFFT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24156AYFFT 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}}