{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24901PWRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24901PWRG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ24901PWRG4","factsUrl":"https://icboms.com/api/mcp/products/BQ24901PWRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24901PWRG4, single-cell Lithium Ion/Polymer linear charger IC, 30 mA max charge current, short-circuit protection, programmable current and timer, 14-TSSOP package, -20°C to 85°C.","salesMarkdown":"## Single-cell linear charger — 30 mA ceiling, tiny cells only The Texas Instruments BQ24901PWRG4 is a single-cell Lithium Ion/Polymer linear charger IC with a maximum charge current of 30 mA. This is not a general-purpose battery charger — the 30 mA ceiling limits it to very small cells: coin cells, thin-film batteries, or micro-pouch cells used in wearables, medical patches, wireless sensors, and IoT endpoints where the charge current is measured in milliamps, not amps. The charge current and charge-termination timer are programmable via external resistors. Short-circuit fault protection is built in. The maximum supply voltage is 10 V. ## 14-TSSOP — rework-friendly, no hidden thermal pad The BQ24901PWRG4 comes in a 14-TSSOP package (0.173\" body width, 4.40 mm). For a board rework technician, this is a straightforward part: no exposed thermal pad underneath, no BGA complexity. The surface-mount TSSOP-14 footprint is well-documented and common. The pin pitch is hand-solderable with a fine-tip iron, though hot-air rework is faster for removal. ## Obsolete — no official replacement on record The BQ24901PWRG4 carries an official product status of Obsolete. This means the part cannot be sourced through normal TI distribution channels as a current-production item. The field reads 'current', which may indicate the design or datasheet is still considered valid by TI, but the product status overrides that — this part is end-of-life. For a new design, do not select this part. ## What the 30 mA ceiling means for your BOM A 30 mA max charge current is roughly 1/10th of what a typical smartphone charger delivers. This part is sized for cells with capacities in the 100-300 mAh range — think a Bluetooth earbud, a medical glucose sensor, or a smart tag. The constant-current charge phase is set by an external resistor; the timer terminates charging after a programmable period as a safety backup. The 4.2 V battery pack voltage is the standard full-charge voltage for a single-cell Li-ion or Li-polymer cell. The short-circuit protection is the only fault safeguard listed — there is no over-voltage, over-temperature, or reverse-battery protection on this die, so the BOM designer should add external protection if the application demands it.","metaTitle":"Texas Instruments BQ24901PWRG4 Li-Ion Charger, 30 mA","metaDescription":"Texas Instruments BQ24901PWRG4 single-cell Li-Ion/Polymer linear charger. 30 mA max charge current, short-circuit protection, 14-TSSOP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR)","Interface":"-","Mounting Type":"Surface Mount","Package / Case":"14-TSSOP (0.173\\\", 4.40mm Width)","Product Status":"Obsolete","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Short Circuit","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Base Product Number":"BQ24901","Battery Pack Voltage":"4.2V","Charge Current - Max":"30mA","Operating Temperature":"-20°C~85°C(TA)","Programmable Features":"Current, Timer","Voltage - Supply (Max)":"10V","Supplier Device Package":"14-TSSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f10b8961fefd53bde0de28de34b2f427.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24901PWRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24901PWRG4 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}}