{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLC5943RHBT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TLC5943RHBT","canonicalUrl":"https://icboms.com/texas-instruments/TLC5943RHBT","factsUrl":"https://icboms.com/api/mcp/products/TLC5943RHBT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TLC5943RHBT, Linear LED Driver IC, Shift Register Topology, 16 Outputs, 50mA per Channel, 17V Output, 32-VFQFN Exposed Pad, Surface Mount.","salesMarkdown":"## Backlight LED driver with shift register interface The TLC5943RHBT is a 16-channel linear LED driver from Texas Instruments, built around a shift register topology that accepts a 30 MHz serial clock. Each of the 16 outputs sinks up to 50 mA, with a total output voltage compliance of 17 V — enough headroom for multiple LEDs in series per string in backlight applications. ## What the 50 mA per channel means for your string design At 50 mA per channel, this part is sized for medium-brightness LED backlight strings — think 6 to 10 LEDs in series per channel at typical forward voltages. The 17 V output ceiling means you can stack about four white LEDs (3.2 Vf each) before hitting the compliance limit; for higher-voltage strings you need an external boost stage ahead of the driver. The shift register interface lets you daisy-chain multiple TLC5943 devices on a single serial bus, updating all channels at the 30 MHz clock rate. At 16 bits per device, a 30 MHz clock updates one full frame in roughly 0.5 µs per device — fast enough for PWM dimming rates well above the visible flicker threshold. ## Package and board-fit considerations Supplied in a 32-VFQFN with exposed pad (5x5 mm body). The thermal pad on the underside must be soldered to a PCB copper plane for heat spreading — at 50 mA × 16 channels the total dissipation hits about 1.5 W at full drive, and the exposed pad is the primary thermal path. The 0.5 mm pitch QFN demands careful solder paste stencil design; a four-layer board with thermal vias under the pad is recommended for continuous full-load operation.","metaTitle":"TLC5943RHBT TI LED Driver, 16-Ch 50mA, 32-VQFN","metaDescription":"Texas Instruments TLC5943RHBT linear LED driver IC, 16 outputs at 50mA each, shift register interface, 30MHz clock, 17V output, -40 to 85°C. Active, ROHS3.","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)","Topology":"Shift Register","Frequency":"30MHz","Applications":"Backlight","Mounting Type":"Surface Mount","Package / Case":"32-VFQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Output":"17V","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":"32-VQFN (5x5)","Current - Output / Channel":"50mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.7","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.70000","currency":"USD"},{"qty":10,"price":"$3.32300","currency":"USD"},{"qty":25,"price":"$3.14120","currency":"USD"},{"qty":100,"price":"$2.72220","currency":"USD"},{"qty":250,"price":"$2.58264","currency":"USD"},{"qty":500,"price":"$2.31740","currency":"USD"},{"qty":1250,"price":"$1.97550","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/f096c3e2f5cc8d4e87371a9bdfeb693b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy TLC5943RHBT and get a price?","answer":"The TLC5943RHBT is sourced to order against an RFQ through independent and authorized distribution channels. Contact us with your target quantity and we will confirm current availability and pricing at quote time."},{"question":"What is the closest functional alternative to TLC5943RHBT?","answer":"The TLC5940RHBR is a close peer: same 16-channel shift register topology, same 30 MHz clock, same supply range and package. The main difference is output current — TLC5940RHBR delivers 120 mA per channel versus 50 mA on the TLC5943RHBT. They are not pin-compatible; a board spin is required to swap between them."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TLC5943RHBT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TLC5943RHBT 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}}