{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISL88739BHRZ","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"ISL88739BHRZ","canonicalUrl":"https://icboms.com/renesas/ISL88739BHRZ","factsUrl":"https://icboms.com/api/mcp/products/ISL88739BHRZ","rawCanonicalId":null},"summary":{"shortDescription":"Renesas Electronics ISL88739BHRZ Li-Ion/Polymer battery charger IC, 2-4 cell, I²C/SMBus interface, 32-VFQFN Exposed Pad, Tube.","salesMarkdown":"## Charger IC for 2-4 series Li-Ion packs The ISL88739BHRZ is a single-chip Li-Ion/Polymer battery charger controller supporting 2 to 4 series cells. It integrates the charge control loop, digital interface, and fault protection into a 32-QFN (4x4 mm) package. The 22V maximum supply voltage covers the full input range for a 2- to 4-cell stack — a 4-cell pack charges at a nominal 16.8V termination, leaving headroom for the input adapter and regulation overhead. ## I²C / SMBus digital control and monitoring Charge parameters — current, voltage, termination threshold, and timer — are set through the I²C or SMBus interface, eliminating external resistor dividers and allowing dynamic adjustment during the charge cycle. The bus also reports fault flags and charge status, which a system MCU can read to log charge events or trigger a safety shutdown on an over-current condition. ## 32-QFN exposed-pad thermal management A 2x2 array of vias under the pad to an inner ground plane is recommended for thermal spreading. The surface-mount package suits automated assembly lines; the Tube shipping format is typical for prototype and low-volume builds, though reel packaging may be available through distribution. ROHS3 compliant, with no exemptions listed; the part meets the EU RoHS directive for lead-free soldering processes.","metaTitle":"Renesas ISL88739BHRZ Li-Ion Battery Charger IC, 2-4 Cell","metaDescription":"Renesas ISL88739BHRZ Li-Ion/Polymer battery charger IC for 2-4 cells, 22V max supply, I²C/SMBus interface, 32-QFN 4x4mm. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tube","Interface":"I²C, SMBus","Mounting Type":"Surface Mount","Package / Case":"32-VFQFN Exposed Pad","Number of Cells":"2 ~ 4","lifecycle_stage":"eol_hot","Fault Protection":"Over Current","Battery Chemistry":"Lithium Ion/Polymer","Voltage - Supply (Max)":"22V","Supplier Device Package":"32-QFN (4x4)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.66","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.66000","currency":"USD"},{"qty":10,"price":"$5.97900","currency":"USD"},{"qty":25,"price":"$5.65240","currency":"USD"},{"qty":100,"price":"$4.89880","currency":"USD"},{"qty":250,"price":"$4.64756","currency":"USD"},{"qty":500,"price":"$4.17026","currency":"USD"},{"qty":1000,"price":"$3.95790","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b155a2ccc82871a677d07ebeb263acca.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What battery chemistries and cell counts does the ISL88739BHRZ support?","answer":"The ISL88739BHRZ is designed for Lithium Ion and Lithium Polymer chemistries, supporting 2 to 4 series cells. The 22V maximum supply covers the full charge voltage range for these configurations."},{"question":"What is the digital interface on the ISL88739BHRZ?","answer":"The part uses an I²C / SMBus serial interface for charge parameter programming and status monitoring. This allows the system microcontroller to set charge current, voltage thresholds, and termination conditions in software."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/ISL88739BHRZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/ISL88739BHRZ 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}}