{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ7790518PW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ7790518PW","canonicalUrl":"https://icboms.com/texas-instruments/BQ7790518PW","factsUrl":"https://icboms.com/api/mcp/products/BQ7790518PW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ7790518PW battery protection IC, Li-Ion, 3-5 cells, overcurrent/overvoltage/undervoltage/short-circuit protection, 20-TSSOP package, -40°C to 85°C.","salesMarkdown":"## What the protection coverage means for your pack design The BQ7790518PW is a Li-Ion battery protection IC that monitors 3 to 5 series cells, combining overcurrent, over-temperature, over/under voltage, and short-circuit fault protection in a single 20-TSSOP package. The overcurrent and short-circuit detection thresholds are set internally — no external sense resistor programming — which simplifies the BOM but also means the protection profile is fixed for the part variant. Confirm the trip levels match your cell chemistry and discharge rate before committing the layout. ## Package and board-fit considerations Housed in a 20-TSSOP (4.40 mm width) with surface-mount termination, the BQ7790518PW requires a standard fine-pitch solder reflow profile. The 0.65 mm lead pitch on TSSOP-20 is manageable on a two-layer board with careful fan-out, but a four-layer stack with a dedicated ground plane under the IC improves thermal and noise performance, especially when the pack sees high discharge currents that trigger the protection FETs.","metaTitle":"TI BQ7790518PW Battery Protection IC, 3-5 Cells, 20-TSSOP","metaDescription":"Texas Instruments BQ7790518PW Li-Ion battery protection IC for 3-5 cells. Active production, ROHS3 compliant. Overcurrent, OVP/UVP, short-circuit protection.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Function":"Battery Protection","Mounting Type":"Surface Mount","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width)","Number of Cells":"3 ~ 5","lifecycle_stage":"eol_hot","Fault Protection":"Over Current, Over Temperature, Over/Under Voltage, Short Circuit","Battery Chemistry":"Lithium Ion","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-TSSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.84","priceTiers":[{"qty":1,"price":"$1.84000","currency":"USD"},{"qty":10,"price":"$1.65500","currency":"USD"},{"qty":25,"price":"$1.56080","currency":"USD"},{"qty":100,"price":"$1.32980","currency":"USD"},{"qty":250,"price":"$1.24868","currency":"USD"},{"qty":500,"price":"$1.09260","currency":"USD"},{"qty":1000,"price":"$0.90529","currency":"USD"},{"qty":2500,"price":"$0.88350","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/bfc27f8007f314769d2e2cab72bed549.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ7790518PW/alternatives.json"},"ai":{"faq":[{"question":"Will BQ7790518PW drop into a panel that was specified around BQ296217DSGT without rewiring?","answer":"No. The BQ296217DSGT is a 2-to-4-cell overvoltage-only protector in a smaller 8-pin package, while the BQ7790518PW covers 3-5 cells with full overcurrent, temperature, and short-circuit protection in a 20-TSSOP. The pinout, cell count range, and protection feature set are different — a board spin and BOM update are required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ7790518PW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ7790518PW 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}}