16-Channel, 12-bit PWM Fm+ I²C-Bus LED Driver

Block Diagram

PCA9685

PCA9685 BLOCK DIAGRAM

Features

Microcontrollers (MCUs)

  • 16 LED drivers. Each output programmable at:
    • Off
    • On
    • Programmable LED brightness
    • Programmable LED turn-on time to help reduce EMI
  • 1 MHz Fast-mode Plus compatible I²C-bus interface with 30 mA high drive capability on SDA output for driving high capacitive buses
  • 4096-step (12-bit) linear programmable brightness per LED output varying from fully off (default) to maximum brightness
  • LED output frequency (all LEDs) typically varies from 24 Hz to 1526 Hz (Default of 1Eh in PRE_SCALE register results in a 200 Hz refresh rate with oscillator clock of 25 MHz)
  • Sixteen totem pole outputs (sink 25 mA and source 10 mA at 5 V) with software programmable open-drain LED outputs selection (default at totem pole). No input function
  • Output state change programmable on the Acknowledge or the STOP Command to update outputs byte-by-byte or all at the same time (default to ‘Change on STOP’)
  • Active LOW Output Enable (OE) input pin. LEDs outputs programmable to logic 1, logic 0 (default at power-up) or ‘high-impedance’ when OE is HIGH
  • 6 hardware address pins allow 62 PCA9685 devices to be connected to the same I²C-bus
  • Toggling OE allows for hardware LED blinking
  • 4 software programmable I²C-bus addresses (one LED All Call address and three LED Sub Call addresses) allow groups of devices to be addressed at the same time in any combination (for example, one register used for ‘All Call’ so that all the PCA9685s on the I²C-bus can be addressed at the same time and the second register used for three different addresses so that 1⁄3 of all devices on the bus can be addressed at the same time in a group). Software enables and disables for these I²C-bus address
  • Software Reset feature (SWRST General Call) allows the device to be reset through the I²C-bus
  • 25 MHz typical internal oscillator requires no external components
  • External 50 MHz (max.) clock input
  • Internal power-on reset
  • Noise filter on SDA/SCL inputs
  • Edge rate control on outputs
  • No output glitches on power-up
  • Supports hot insertion
  • Low standby current
  • Operating power supply voltage range of 2.3 V to 5.5 V
  • 5.5 V tolerant inputs
  • -40 °C to +85 °C operation
  • ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
  • Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
  • Packages offered: TSSOP28, HVQFN28

Buy/Parametrics










































































































N true 0 PSPPCA9685en 13 Brochure Brochure t518 3 Data Sheet Data Sheet t520 1 Package Information Package Information t790 2 Packing Information Packing Information t935 2 Selector Guide Selector Guide t528 1 Supporting Information Supporting Information t531 1 User Guide User Guide t792 3 en_US en_US en Data Sheet Data Sheet 1 1 4.0 English 1442069082978715581841 PSP 408.8 KB None None documents None 1442069082978715581841 /docs/en/data-sheet/PCA9685.pdf 408783 /docs/en/data-sheet/PCA9685.pdf PCA9685 documents N N 2015-04-16 16-channel, 12-bit PWM Fm+ I2C-bus LED controller /docs/en/data-sheet/PCA9685.pdf /docs/en/data-sheet/PCA9685.pdf Data Sheet N 980000996212993340 2024-10-24 pdf N en Apr 16, 2015 980000996212993340 Data Sheet Y N 16-channel, 12-bit PWM Fm+ I2C-bus LED controller User Guide User Guide 3 2 6.0 Japanese 1442125286808710770774ja PSP 751.0 KB None None documents None 1442125286808710770774 /docs/ja/user-guide/UM10204.pdf 750958 /docs/ja/user-guide/UM10204.pdf UM10204 documents N N 2016-07-12 I2C-bus specification and user manual /docs/ja/user-guide/UM10204.pdf /docs/ja/user-guide/UM10204.pdf User Guide N 132339537837198660 2024-10-24 ja Apr 28, 2014 132339537837198660 User Guide Y N I2C-bus specification and user manual 7.0 English NXP Semiconductors developed a simple bidirectional 2-wire bus for efficient inter-IC control. This bus is called the Inter-IC or I2C-bus. Only two bus lines are required: a serial data line (SDA) and a serial clock line (SCL). Serial, 8-bit oriented, bidirectional data transfers can be made at up to 100 kbit/s in the Standard-mode, up to 400 kbit/s in the Fast-mode, up to 1 Mbit/s in the Fast-mode Plus (Fm+), or up to 3.4 Mbit/s in the High-speed mode. 1442125286808710770774 PSP 751.0 KB None None documents None 1442125286808710770774 /docs/en/user-guide/UM10204.pdf 750958 /docs/en/user-guide/UM10204.pdf UM10204 documents N N 2016-07-12 I2C-bus specification and user manual /docs/en/user-guide/UM10204.pdf /docs/en/user-guide/UM10204.pdf User Guide N 132339537837198660 2024-10-24 pdf N en Oct 1, 2021 132339537837198660 User Guide Y N I2C-bus specification and user manual 3 1.0 English 1442125429801702674389 PSP 749.6 KB Registration without Disclaimer None documents Extended 1442125429801702674389 /secured/assets/documents/en/user-guide/UM10528.pdf 749626 /secured/assets/documents/en/user-guide/UM10528.pdf UM10528 documents Y N 2012-02-06 PCA9632 demonstration board OM13269 /webapp/Download?colCode=UM10528 /secured/assets/documents/en/user-guide/UM10528.pdf User Guide N 132339537837198660 2025-02-10 pdf Y en Feb 6, 2012 132339537837198660 User Guide Y N PCA9632 demonstration board OM13269 4 1.0 English 1442125396322710024694 PSP 345.0 KB Registration without Disclaimer None documents Extended 1442125396322710024694 /secured/assets/documents/en/user-guide/UM10317.pdf 345007 /secured/assets/documents/en/user-guide/UM10317.pdf UM10317 documents Y N 2011-06-30 UM10317 /webapp/Download?colCode=UM10317 /secured/assets/documents/en/user-guide/UM10317.pdf User Guide N 132339537837198660 2024-10-21 pdf Y en Dec 15, 2008 132339537837198660 User Guide Y N UM10317 Brochure Brochure 3 5 0 Japanese LEDs are used for status indication and fun lighting. LED controllers offload the system processor work load and power into small package. 1537464109287702482909ja PSP 955.2 KB None None documents None 1537464109287702482909 /docs/ja/brochure/LED-CONTROLLERS-FINAL-DELIVERABLES.pdf 955197 /docs/ja/brochure/LED-CONTROLLERS-FINAL-DELIVERABLES.pdf LED-DRIVER-SELECTOR-GUIDE documents N N 2018-09-20 LED Drivers Selector Guide /docs/ja/brochure/LED-CONTROLLERS-FINAL-DELIVERABLES.pdf /docs/ja/brochure/LED-CONTROLLERS-FINAL-DELIVERABLES.pdf Brochure N 712453003803778552 2024-10-18 ja Jan 4, 2022 712453003803778552 Brochure Y N LEDコントローラ 5 English LED Drivers, Voltage-switch and constant-current drivers 1537464109287702482909 PSP 955.2 KB None None documents None 1537464109287702482909 /docs/en/brochure/LED-DRIVER-SELECTOR-GUIDE.pdf 955197 /docs/en/brochure/LED-DRIVER-SELECTOR-GUIDE.pdf LED-DRIVER-SELECTOR-GUIDE documents N N 2018-09-20 LED Drivers Selector Guide /docs/en/brochure/LED-DRIVER-SELECTOR-GUIDE.pdf /docs/en/brochure/LED-DRIVER-SELECTOR-GUIDE.pdf Brochure N 712453003803778552 2024-10-18 pdf N en Sep 20, 2024 712453003803778552 Brochure Y N LED Drivers Selector Guide 6 1.0 English 1442124656944726362331 PSP 1.1 MB None None documents None 1442124656944726362331 /docs/en/brochure/75016543.pdf 1091243 /docs/en/brochure/75016543.pdf 75016543 documents N N 2016-10-08 Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances /docs/en/brochure/75016543.pdf /docs/en/brochure/75016543.pdf Brochure N 712453003803778552 2024-11-28 pdf N en Apr 8, 2018 712453003803778552 Brochure Y N Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances 7 1.0 English 1442124536742699632315 PSP 2.8 MB None None documents None 1442124536742699632315 /docs/en/brochure/75017588.pdf 2752784 /docs/en/brochure/75017588.pdf 75017588 documents N N 2016-07-11 LED controllers: Voltage-switch drivers, constant-current drivers, and Flash LED drivers /docs/en/brochure/75017588.pdf /docs/en/brochure/75017588.pdf Brochure N 712453003803778552 2024-10-21 pdf N en Jul 2, 2014 712453003803778552 Brochure Y N LED controllers: Voltage-switch drivers, constant-current drivers, and Flash LED drivers Package Information Package Information 2 8 1.0 English 1455079535791698867422 PSP 383.7 KB None None documents None 1455079535791698867422 /docs/en/package-information/SOT361-1.pdf 383703 /docs/en/package-information/SOT361-1.pdf SOT361-1 documents N N 2016-02-12 plastic thin shrink small outline package; 28 leads; body width 4.4 mm /docs/en/package-information/SOT361-1.pdf /docs/en/package-information/SOT361-1.pdf Package Information N 302435339416912908 2024-10-21 pdf N en Feb 8, 2016 302435339416912908 Package Information Y N plastic thin shrink small outline package; 28 leads; body width 4.4 mm 9 1.0 English 1455078786435728001214 PSP 215.8 KB None None documents None 1455078786435728001214 /docs/en/package-information/SOT788-1.pdf 215787 /docs/en/package-information/SOT788-1.pdf SOT788-1 documents N N 2016-02-12 plastic thermal enhanced very thin quad flat package; no leads; 28 terminals; body 6 x 6 x 0.85 mm /docs/en/package-information/SOT788-1.pdf /docs/en/package-information/SOT788-1.pdf Package Information N 302435339416912908 2024-10-21 pdf N en Feb 8, 2016 302435339416912908 Package Information Y N plastic thermal enhanced very thin quad flat package; no leads; 28 terminals; body 6 x 6 x 0.85 mm Packing Information Packing Information 2 10 1.0 English 1442131307218739684175 PSP 187.4 KB None None documents None 1442131307218739684175 /docs/en/packing/SOT788-1_118.pdf 187423 /docs/en/packing/SOT788-1_118.pdf SOT788-1_118 documents N N 2013-04-18 HVQFN28; Reel pack; SMD, 13"Q1/T1 Standard product orientationOrderable part number ending ,118 or JOrdering code (12NC) ending 118 /docs/en/packing/SOT788-1_118.pdf /docs/en/packing/SOT788-1_118.pdf Packing Information N 145666923842250347 2024-10-24 pdf N en Apr 18, 2013 145666923842250347 Packing Information Y N HVQFN28; Reel pack; SMD, 13"Q1/T1 Standard product orientationOrderable part number ending ,118 or JOrdering code (12NC) ending 118 11 3.0 English 1442131463535720088921 PSP 232.6 KB None None documents None 1442131463535720088921 /docs/en/packing/SOT361-1_118.pdf 232565 /docs/en/packing/SOT361-1_118.pdf SOT361-1_118 documents N N 2013-04-17 TSSOP28; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 /docs/en/packing/SOT361-1_118.pdf /docs/en/packing/SOT361-1_118.pdf Packing Information N 145666923842250347 2024-10-21 pdf N en Apr 16, 2013 145666923842250347 Packing Information Y N TSSOP28; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 Selector Guide Selector Guide 1 12 2.1 English 1442126252734722248255 PSP 3.3 MB None None documents None 1442126252734722248255 /docs/en/product-selector-guide/75017085.pdf 3301382 /docs/en/product-selector-guide/75017085.pdf 75017085 documents N N 2016-10-08 Application guide: Flat-panel TV sets /docs/en/product-selector-guide/75017085.pdf /docs/en/product-selector-guide/75017085.pdf Selector Guide N 553557935274807777 2025-02-11 pdf N en Mar 12, 2012 553557935274807777 Selector Guide Y N Application guide: Flat-panel TV sets Supporting Information Supporting Information 1 13 1.0 English SSOP, TSSOP & VSO FOOTPRINT (WAVE SOLDERING) 1442126381432716559822 PSP 16.6 KB None None documents None 1442126381432716559822 /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf 16645 /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf SSOP-TSSOP-VSO-WAVE documents N N 2016-10-08 Footprint for wave soldering /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf Supporting Information N 371282830530968666 2024-10-21 pdf N en Oct 8, 2009 371282830530968666 Supporting Information Y N Footprint for wave soldering false 0 PCA9685 downloads en true 1 Y PSP Y Y Brochure 3 /docs/en/brochure/LED-DRIVER-SELECTOR-GUIDE.pdf 2018-09-20 1537464109287702482909 PSP 5 Sep 20, 2024 Brochure LED Drivers, Voltage-switch and constant-current drivers None /docs/en/brochure/LED-DRIVER-SELECTOR-GUIDE.pdf English documents 955197 None 712453003803778552 2024-10-18 N /docs/en/brochure/LED-DRIVER-SELECTOR-GUIDE.pdf LED Drivers Selector Guide /docs/en/brochure/LED-DRIVER-SELECTOR-GUIDE.pdf documents 712453003803778552 Brochure N en None Y pdf 5 N N LED Drivers Selector Guide 955.2 KB LED-DRIVER-SELECTOR-GUIDE N 1537464109287702482909 /docs/en/brochure/75016543.pdf 2016-10-08 1442124656944726362331 PSP 6 Apr 8, 2018 Brochure None /docs/en/brochure/75016543.pdf English documents 1091243 None 712453003803778552 2024-11-28 N /docs/en/brochure/75016543.pdf Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances /docs/en/brochure/75016543.pdf documents 712453003803778552 Brochure N en None Y pdf 1.0 N N Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances 1.1 MB 75016543 N 1442124656944726362331 /docs/en/brochure/75017588.pdf 2016-07-11 1442124536742699632315 PSP 7 Jul 2, 2014 Brochure None /docs/en/brochure/75017588.pdf English documents 2752784 None 712453003803778552 2024-10-21 N /docs/en/brochure/75017588.pdf LED controllers: Voltage-switch drivers, constant-current drivers, and Flash LED drivers /docs/en/brochure/75017588.pdf documents 712453003803778552 Brochure N en None Y pdf 1.0 N N LED controllers: Voltage-switch drivers, constant-current drivers, and Flash LED drivers 2.8 MB 75017588 N 1442124536742699632315 Data Sheet 1 /docs/en/data-sheet/PCA9685.pdf 2015-04-16 1442069082978715581841 PSP 1 Apr 16, 2015 Data Sheet None /docs/en/data-sheet/PCA9685.pdf English documents 408783 None 980000996212993340 2024-10-24 N /docs/en/data-sheet/PCA9685.pdf 16-channel, 12-bit PWM Fm+ I2C-bus LED controller /docs/en/data-sheet/PCA9685.pdf documents 980000996212993340 Data Sheet N en None Y pdf 4.0 N N 16-channel, 12-bit PWM Fm+ I2C-bus LED controller 408.8 KB PCA9685 N 1442069082978715581841 Package Information 2 /docs/en/package-information/SOT361-1.pdf 2016-02-12 1455079535791698867422 PSP 8 Feb 8, 2016 Package Information None /docs/en/package-information/SOT361-1.pdf English documents 383703 None 302435339416912908 2024-10-21 N /docs/en/package-information/SOT361-1.pdf plastic thin shrink small outline package; 28 leads; body width 4.4 mm /docs/en/package-information/SOT361-1.pdf documents 302435339416912908 Package Information N en None Y pdf 1.0 N N plastic thin shrink small outline package; 28 leads; body width 4.4 mm 383.7 KB SOT361-1 N 1455079535791698867422 /docs/en/package-information/SOT788-1.pdf 2016-02-12 1455078786435728001214 PSP 9 Feb 8, 2016 Package Information None /docs/en/package-information/SOT788-1.pdf English documents 215787 None 302435339416912908 2024-10-21 N /docs/en/package-information/SOT788-1.pdf plastic thermal enhanced very thin quad flat package; no leads; 28 terminals; body 6 x 6 x 0.85 mm /docs/en/package-information/SOT788-1.pdf documents 302435339416912908 Package Information N en None Y pdf 1.0 N N plastic thermal enhanced very thin quad flat package; no leads; 28 terminals; body 6 x 6 x 0.85 mm 215.8 KB SOT788-1 N 1455078786435728001214 Packing Information 2 /docs/en/packing/SOT788-1_118.pdf 2013-04-18 1442131307218739684175 PSP 10 Apr 18, 2013 Packing Information None /docs/en/packing/SOT788-1_118.pdf English documents 187423 None 145666923842250347 2024-10-24 N /docs/en/packing/SOT788-1_118.pdf HVQFN28; Reel pack; SMD, 13"Q1/T1 Standard product orientationOrderable part number ending ,118 or JOrdering code (12NC) ending 118 /docs/en/packing/SOT788-1_118.pdf documents 145666923842250347 Packing Information N en None Y pdf 1.0 N N HVQFN28; Reel pack; SMD, 13"Q1/T1 Standard product orientationOrderable part number ending ,118 or JOrdering code (12NC) ending 118 187.4 KB SOT788-1_118 N 1442131307218739684175 /docs/en/packing/SOT361-1_118.pdf 2013-04-17 1442131463535720088921 PSP 11 Apr 16, 2013 Packing Information None /docs/en/packing/SOT361-1_118.pdf English documents 232565 None 145666923842250347 2024-10-21 N /docs/en/packing/SOT361-1_118.pdf TSSOP28; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 /docs/en/packing/SOT361-1_118.pdf documents 145666923842250347 Packing Information N en None Y pdf 3.0 N N TSSOP28; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or J Ordering code (12NC) ending 118 232.6 KB SOT361-1_118 N 1442131463535720088921 Selector Guide 1 /docs/en/product-selector-guide/75017085.pdf 2016-10-08 1442126252734722248255 PSP 12 Mar 12, 2012 Selector Guide None /docs/en/product-selector-guide/75017085.pdf English documents 3301382 None 553557935274807777 2025-02-11 N /docs/en/product-selector-guide/75017085.pdf Application guide: Flat-panel TV sets /docs/en/product-selector-guide/75017085.pdf documents 553557935274807777 Selector Guide N en None Y pdf 2.1 N N Application guide: Flat-panel TV sets 3.3 MB 75017085 N 1442126252734722248255 Supporting Information 1 /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf 2016-10-08 1442126381432716559822 PSP 13 Oct 8, 2009 Supporting Information SSOP, TSSOP & VSO FOOTPRINT (WAVE SOLDERING) None /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf English documents 16645 None 371282830530968666 2024-10-21 N /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf Footprint for wave soldering /docs/en/supporting-information/SSOP-TSSOP-VSO-WAVE.pdf documents 371282830530968666 Supporting Information N en None Y pdf 1.0 N N Footprint for wave soldering 16.6 KB SSOP-TSSOP-VSO-WAVE N 1442126381432716559822 User Guide 3 /docs/en/user-guide/UM10204.pdf 2016-07-12 1442125286808710770774 PSP 2 Oct 1, 2021 User Guide NXP Semiconductors developed a simple bidirectional 2-wire bus for efficient inter-IC control. This bus is called the Inter-IC or I2C-bus. Only two bus lines are required: a serial data line (SDA) and a serial clock line (SCL). Serial, 8-bit oriented, bidirectional data transfers can be made at up to 100 kbit/s in the Standard-mode, up to 400 kbit/s in the Fast-mode, up to 1 Mbit/s in the Fast-mode Plus (Fm+), or up to 3.4 Mbit/s in the High-speed mode. None /docs/en/user-guide/UM10204.pdf English documents 750958 None 132339537837198660 2024-10-24 N /docs/en/user-guide/UM10204.pdf I2C-bus specification and user manual /docs/en/user-guide/UM10204.pdf documents 132339537837198660 User Guide N en None Y pdf 7.0 N N I2C-bus specification and user manual 751.0 KB UM10204 N 1442125286808710770774 /secured/assets/documents/en/user-guide/UM10528.pdf 2012-02-06 1442125429801702674389 PSP 3 Feb 6, 2012 User Guide Registration without Disclaimer /secured/assets/documents/en/user-guide/UM10528.pdf English documents 749626 None 132339537837198660 2025-02-10 Y /webapp/Download?colCode=UM10528 PCA9632 demonstration board OM13269 /secured/assets/documents/en/user-guide/UM10528.pdf documents 132339537837198660 User Guide N en Extended Y pdf 1.0 Y N PCA9632 demonstration board OM13269 749.6 KB UM10528 N 1442125429801702674389 /secured/assets/documents/en/user-guide/UM10317.pdf 2011-06-30 1442125396322710024694 PSP 4 Dec 15, 2008 User Guide Registration without Disclaimer /secured/assets/documents/en/user-guide/UM10317.pdf English documents 345007 None 132339537837198660 2024-10-21 Y /webapp/Download?colCode=UM10317 UM10317 /secured/assets/documents/en/user-guide/UM10317.pdf documents 132339537837198660 User Guide N en Extended Y pdf 1.0 Y N UM10317 345.0 KB UM10317 N 1442125396322710024694 true Y Products

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Compact List

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Data Sheet (1)
Package Information (2)
Packing Information (2)
Selector Guide (1)
Supporting Information (1)
User Guide (3)

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2 design files

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4 hardware offerings

  • Servo Click
    Evaluation and Development Boards

    Servo Click

  • Click boards - Motor Control
    Evaluation and Development Boards

    Click boards - Motor Control

  • Click boards - Interface
    Evaluation and Development Boards

    Click boards - Interface

  • PWM Click
    Evaluation and Development Boards

    PWM Click

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