{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCA9955BTWJ","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"PCA9955BTWJ","canonicalUrl":"https://icboms.com/nxp/PCA9955BTWJ","factsUrl":"https://icboms.com/api/mcp/products/PCA9955BTWJ","rawCanonicalId":null},"summary":{"shortDescription":"NXP Semiconductors PCA9955BTWJ linear LED driver, 16 outputs, 65 mA per channel, 28-HTSSOP (4.40 mm width) exposed pad, surface mount, -40 to +85 °C, ROHS3.","salesMarkdown":"## 16-channel constant-current sink with I²C control The PCA9955BTWJ is a linear LED driver from NXP, integrating 16 constant-current sink outputs rated at 65 mA per channel. Each output is independently programmable via the I²C-bus interface, allowing per-channel PWM dimming without external shift registers or discrete current-setting resistors. The 16 outputs suit backlight arrays in automotive infotainment displays, industrial keypads, or appliance indicator panels where each LED string needs individual brightness control. ## Package thermal path and board integration Housed in a 28-lead HTSSOP with an exposed pad (4.40 mm body width), the package relies on the pad soldered to a copper land on the PCB to pull heat from the die. At 65 mA per channel on all 16 outputs, the total dissipation is just over 1 W — the exposed pad keeps the junction below the 85 °C ambient limit without forced airflow, provided the PCB copper plane under the pad has adequate area. The I²C address is set via two hardware pins, allowing up to four devices on the same bus for 64 total channels. It is ROHS3 compliant, covering the full substance restriction without exemption-based carve-outs.","metaTitle":"NXP PCA9955BTWJ LED Driver, 16-Ch 65mA, 28-HTSSOP","metaDescription":"NXP PCA9955BTWJ linear LED driver, 16 outputs at 65 mA per channel, 28-HTSSOP exposed pad. Active production, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Linear","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"Backlight","Mounting Type":"Surface Mount","Package / Case":"28-TSSOP (0.173\\\", 4.40mm Width) Exposed Pad","lifecycle_stage":"eol_hot","Number of Outputs":"16","Internal Switch(s)":"Yes","Operating Temperature":"-40°C ~ 85°C (TA)","Voltage - Supply (Max)":"5.5V","Voltage - Supply (Min)":"3V","Supplier Device Package":"28-HTSSOP","Current - Output / Channel":"65mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.78","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.78000","currency":"USD"},{"qty":10,"price":"$2.49900","currency":"USD"},{"qty":25,"price":"$2.36240","currency":"USD"},{"qty":100,"price":"$2.04750","currency":"USD"},{"qty":250,"price":"$1.94248","currency":"USD"},{"qty":500,"price":"$1.74300","currency":"USD"},{"qty":1000,"price":"$1.66000","currency":"USD"},{"qty":2500,"price":"$1.66000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/90db7dc8ae58d0eedcc45c1f36bad594.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output current per channel for PCA9955BTWJ?","answer":"Each of the 16 outputs is rated at 65 mA continuous. The current is set internally — no external resistor is needed per channel."},{"question":"What package does PCA9955BTWJ come in?","answer":"It is supplied in a 28-lead HTSSOP with an exposed pad, 4.40 mm body width."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/PCA9955BTWJ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/PCA9955BTWJ 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}}