{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ2028YZGT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ2028YZGT","canonicalUrl":"https://icboms.com/texas-instruments/BQ2028YZGT","factsUrl":"https://icboms.com/api/mcp/products/BQ2028YZGT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ2028YZGT Multi-Function Controller, HDQ interface, 1-cell support, Surface Mount, 12-UFBGA/DSBGA package, -40°C to 85°C operating temperature, Active.","salesMarkdown":"The Texas Instruments BQ2028YZGT is a multi-function controller designed for single-cell battery management in portable devices. It communicates over the HDQ single-wire interface, a TI proprietary protocol that carries both data and clock on one line, minimizing pin count on the host side. The part lives in a 12-DSBGA package (12-UFBGA, DSBGA), a tiny 0.4 mm pitch BGA that saves board space but demands careful PCB layout and rework planning. HDQ is a single-wire, open-drain interface that runs at up to about 5 kbps typical. The host MCU needs a GPIO that can be toggled for bit-banged communication — no dedicated UART or I2C peripheral required. That makes it simple to integrate, but the timing is tighter than I2C; the datasheet timing parameters need to be respected in firmware. ## 12-DSBGA — the footprint reality The 12-DSBGA is a 0.4 mm pitch, 2.0 mm × 1.5 mm (approx) package. That means a small stencil aperture, tight solder-paste registration, and no room for manual probing under the part. X-ray inspection after reflow is the norm — shorts between balls are invisible to the naked eye. The board needs a solder-mask-defined pad with via-in-pad only if the vias are filled and plated; otherwise, route traces between balls on the top layer. The ROHS3 compliance is current, so no lead-free transition issues.","metaTitle":"BQ2028YZGT Multi-Function Controller, HDQ, 12-DSBGA, Active","metaDescription":"TI BQ2028YZGT multi-function battery controller with HDQ interface, single-cell support, -40°C to 85°C range, 12-DSBGA package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Multi-Function Controller","Interface":"HDQ","Mounting Type":"Surface Mount","Package / Case":"12-UFBGA, DSBGA","Number of Cells":"1","lifecycle_stage":"eol_hot","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"12-DSBGA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.28","priceTiers":[{"qty":1,"price":"$1.28000","currency":"USD"},{"qty":10,"price":"$1.17200","currency":"USD"},{"qty":25,"price":"$1.14040","currency":"USD"},{"qty":50,"price":"$1.13460","currency":"USD"},{"qty":100,"price":"$1.01420","currency":"USD"},{"qty":250,"price":"$1.01124","currency":"USD"},{"qty":500,"price":"$0.99596","currency":"USD"},{"qty":750,"price":"$0.98128","currency":"USD"},{"qty":1250,"price":"$0.95368","currency":"USD"},{"qty":2500,"price":"$0.91844","currency":"USD"},{"qty":6250,"price":"$0.88791","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9d62f6dac75de73608f8867f53b2b032.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ2028YZGT/alternatives.json"},"ai":{"faq":[{"question":"Does BQ2028YZGT require an external microcontroller?","answer":"Yes. The BQ2028YZGT is a multi-function controller, not a standalone MCU. It communicates over the HDQ interface and requires a host microcontroller to handle the protocol and decision logic for battery management functions."},{"question":"What is the replacement for BQ2028YZGT?","answer":"No direct replacement or successor is listed by TI for the BQ2028YZGT. The BQ2084DBT-V143 is a multi-cell SMBus battery monitor, not a pin-compatible or functional substitute for this single-cell HDQ controller. For a like-for-like swap, the BQ2028YZGT remains the active part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ2028YZGT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ2028YZGT 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}}