component
TLC5940
Public Made by Adomby adom
TI 16-channel constant-current LED driver, HTSSOP-28. 12-bit PWM + 6-bit dot correction, daisy-chainable. Datasheet-verified.
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{
"schema_version": 1,
"type": "component",
"slug": "tlc5940",
"title": "TLC5940",
"brief": "TI 16-channel constant-current LED driver, HTSSOP-28. 12-bit PWM + 6-bit dot correction, daisy-chainable. Datasheet-verified.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"driver",
"led-driver",
"pwm",
"constant-current",
"htssop-28",
"texas-instruments"
],
"component": {
"mpn": "TLC5940",
"manufacturer": "Texas Instruments",
"package": "HTSSOP-28",
"pin_count": 28,
"category": "Driver",
"subcategory": "16-channel LED / PWM driver",
"datasheet": "https://www.ti.com/lit/ds/symlink/tlc5940.pdf",
"parts": {
"symbol": "tlc5940.kicad_sym",
"footprint": "tlc5940.kicad_mod",
"model_3d": "tlc5940-etched.glb",
"model_3d_plain": "tlc5940.glb",
"lbr": "tlc5940.lbr",
"model_3d_step": "tlc5940-etched.step",
"model_3d_step_plain": "tlc5940.step"
},
"distributor_links": {},
"pins": [
{
"number": "1",
"name": "GND",
"type": "power_in",
"description": "Device ground / substrate return for the digital core and analog reference. Must be tied to the system ground plane; the HTSSOP thermal pad should also connect to GND for heat spreading."
},
{
"number": "2",
"name": "BLANK",
"type": "input",
"description": "Blank-all-outputs control. When BLANK = H, all OUTn are forced OFF and the grayscale counter is reset. When BLANK = L, OUTn are driven under 12-bit grayscale PWM. CMOS input, VIH ≥ 0.8·VCC."
},
{
"number": "3",
"name": "XLAT",
"type": "input",
"description": "Level-triggered latch signal. On XLAT high, shift-register data is latched into the GS register (VPRG = L) or DC register (VPRG = H). When XLAT is low, GS/DC data is held constant. Minimum pulse width 20 ns."
},
{
"number": "4",
"name": "SCLK",
"type": "input",
"description": "Serial data shift clock for the input shift register (data on SIN sampled on rising edge). Supports data-rates up to 30 MHz; minimum H/L pulse width 16 ns."
},
{
"number": "5",
"name": "SIN",
"type": "input",
"description": "Serial data input. Data is shifted into the 192-bit (GS) or 96-bit (DC) input shift register MSB-first on the rising edge of SCLK."
},
{
"number": "6",
"name": "VPRG",
"type": "input",
"description": "Multifunction mode-select input. VPRG = GND → GS (grayscale) mode; VPRG = VCC → DC (dot correction) mode; VPRG = V(PRG) (20-23 V) with DCPRG = H → programs DC data into the on-chip EEPROM. Reset EEPROM default is 3Fh."
},
{
"number": "7",
"name": "OUT0",
"type": "output",
"description": "Constant-current LED sink output 0. Sinks 0-60 mA (VCC < 3.6 V) or 0-120 mA (VCC > 3.6 V); modulated by 12-bit grayscale PWM × 6-bit dot correction. LED anode tied to LED supply (up to 17 V)."
},
{
"number": "8",
"name": "OUT1",
"type": "output",
"description": "Constant-current LED sink output 1. See OUT0."
},
{
"number": "9",
"name": "OUT2",
"type": "output",
"description": "Constant-current LED sink output 2. See OUT0."
},
{
"number": "10",
"name": "OUT3",
"type": "output",
"description": "Constant-current LED sink output 3. See OUT0."
},
{
"number": "11",
"name": "OUT4",
"type": "output",
"description": "Constant-current LED sink output 4. See OUT0."
},
{
"number": "12",
"name": "OUT5",
"type": "output",
"description": "Constant-current LED sink output 5. See OUT0."
},
{
"number": "13",
"name": "OUT6",
"type": "output",
"description": "Constant-current LED sink output 6. See OUT0."
},
{
"number": "14",
"name": "OUT7",
"type": "output",
"description": "Constant-current LED sink output 7. See OUT0."
},
{
"number": "15",
"name": "OUT8",
"type": "output",
"description": "Constant-current LED sink output 8. See OUT0."
},
{
"number": "16",
"name": "OUT9",
"type": "output",
"description": "Constant-current LED sink output 9. See OUT0."
},
{
"number": "17",
"name": "OUT10",
"type": "output",
"description": "Constant-current LED sink output 10. See OUT0."
},
{
"number": "18",
"name": "OUT11",
"type": "output",
"description": "Constant-current LED sink output 11. See OUT0."
},
{
"number": "19",
"name": "OUT12",
"type": "output",
"description": "Constant-current LED sink output 12. See OUT0."
},
{
"number": "20",
"name": "OUT13",
"type": "output",
"description": "Constant-current LED sink output 13. See OUT0."
},
{
"number": "21",
"name": "OUT14",
"type": "output",
"description": "Constant-current LED sink output 14. See OUT0."
},
{
"number": "22",
"name": "OUT15",
"type": "output",
"description": "Constant-current LED sink output 15. See OUT0."
},
{
"number": "23",
"name": "XERR",
"type": "output",
"description": "Open-drain error flag output. Pulled low when either LED-open-detection (LOD) or thermal-error-flag (TEF) asserts. Requires an external pull-up to VCC (typ. 10 kΩ)."
},
{
"number": "24",
"name": "SOUT",
"type": "output",
"description": "Serial data output - end of the 192-bit shift register, allowing cascade of multiple TLC5940 devices. IOH = -1 mA, IOL = 1 mA (VCC = 5 V)."
},
{
"number": "25",
"name": "GSCLK",
"type": "input",
"description": "Reference clock for the internal 12-bit grayscale PWM counter. Up to 30 MHz; drives the 4096-step brightness ramp for all 16 channels."
},
{
"number": "26",
"name": "DCPRG",
"type": "input",
"description": "Switch DC-data source. DCPRG = L → DC values read from EEPROM; DCPRG = H → DC values read from the DC register. In combination with VPRG = V(PRG) it initiates EEPROM programming (default 3Fh)."
},
{
"number": "27",
"name": "IREF",
"type": "passive",
"description": "Reference-current programming terminal. An external resistor from IREF to GND sets the maximum sink current for all 16 outputs; VREF ≈ 1.24 V. IOLC = 60 mA (VCC < 3.6 V) or 120 mA (VCC > 3.6 V)."
},
{
"number": "28",
"name": "VCC",
"type": "power_in",
"description": "Logic and analog supply voltage. Recommended operating range 3.0-5.5 V (abs-max 6 V). Bypass with a 100 nF ceramic close to the pin."
}
],
"provenance": {
"extractor": "ds2sf",
"datasheet": {
"url": "https://www.ti.com/lit/ds/symlink/tlc5940.pdf",
"pages": 40,
"sha256": "0177686922a94a12",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 28,
"described": 28,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
}
},
"metadata": {
"specs": {
"Type": "16-channel constant-current LED driver",
"Channels": "16 (open-drain current sinks)",
"Grayscale": "12-bit PWM per channel",
"Dot correction": "6-bit per channel",
"Current set": "single external resistor",
"Interface": "serial (SIN/SCLK/XLAT), cascadable",
"Supply voltage": "3-5.5 V",
"Package": "HTSSOP-28 (thermal pad)"
}
},
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"tlc5940",
"16 channel led driver",
"constant current led driver",
"pwm led driver",
"grayscale led"
],
"discovery_pitch": "TLC5940 16-channel constant-current LED driver with 12-bit PWM (HTSSOP-28) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"tlc5940.kicad_sym",
"tlc5940.kicad_mod",
"tlc5940.glb",
"tlc5940.lbr",
"docs/hero.png",
"docs/tlc5940-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"tlc5940-etched.step"
],
"variants": [
{
"mpn": "TLC5940PWP (HTSSOP-28)",
"kind": "packaging"
},
{
"mpn": "TLC5940NT (PDIP-28)",
"kind": "packaging"
}
]
}