Description
PWM Servo Driver PCA9685 16Channel 12Bit I2C Servo Motor Controller for Arduino Projects
Key benefits
Precise LED brightness control: Each of the 16 outputs supports 4096 linear brightness levels (12 bits), enabling smooth dimming from off to full brightness and fine tonal control for indicators and displays.
Flexible output configuration: 16 pushpull outputs (sinking up to 25 mA and sourcing up to 10 mA at 5 V) can be softwareprogrammed as opendrain outputs if needed. Default is pushpull, and there is no input function required for this selection.
drive, robust bus interface: MHz Fast Mode Plus compatible bus interface with 30 mA drive on SDA supports driving large capacitive loads and long cables, ensuring reliable communication in demanding applications.
Programmable update behavior: The output state can be configured to change on response or to stop and update all outputs simultaneously. The default behavior is stop change, giving deterministic control when coordinating multichannel updates.
Safe and flexible enable control: A lowactive output enable input pin allows the LED outputs to be set to 0, 1, or impedance when the pin is . The default at poweron is impedance for safe startup.
Core features
16 pushpull outputs with configurable opendrain option
Sinking capability: 25 mA
Sourcing capability: 10 mA at 5 V
Default configuration: pushpull
Opendrain mode available via software select, with no separate input function required
12bit brightness per channel
4096 levels of linear brightness control per LED output
Allows smooth dimming curves and consistent visual results across all channels
Fast, reliable bus interface
MHz Fast Mode Plus compatible
30 mA drive on SDA for handling capacitive loads and longer interconnects
Update timing and control
Output state can be programmed to change on response
Or stop and update all outputs simultaneously
Default is stop change for deterministic multichannel updates
Enable and tristate management
Lowactive output enable pin
When , each LED output can be driven to 0, 1, or impedance
impedance state is the default on powerup for safe initialization
Two to three practical use scenarios
Industrial status and signaling panels
Use the 16channel brightness control to drive a dense array of indicators with smooth dimming for different machine states.
Benefit from fast bus communication to update multiple indicators in sync, and use the enable pin for controlled tristate operation during faults or maintenance.
density LED display backplanes
Leverage 12bit brightness per channel to render nuanced intensity levels across a large display.
Use the MHz Fast Mode Plus interface to manage rapid updates across many channels, even with capacitive interconnects.
Instrumentation and automotivestyle indicator clusters
The pushpull outputs with optional opendrain configuration support diverse load requirements in compact form factors.
The lowactive enable pin allows safe startup and controlled output enable/disable without unintended transitions.
Specifications at a glance
Outputs: 16 pushpull outputs (configurable as opendrain via software, default pushpull)
Drive capability: Sinking up to 25 mA, sourcing up to 10 mA per output at 5 V
Brightness resolution: 12bit (4096 levels) per LED output
Interface: MHz Fast Mode Plus compatible bus interface with 30 mA SDA drive
Update behavior: Programmable to change on response or to stop and update all outputs simultaneously; default is stop change
Enable control: Lowactive output enable input; when , outputs can be set to 0, 1, or impedance; default impedance at poweron
Notes on usage and integration
The device supports precise perchannel brightness control while enabling synchronized updates across all channels for cohesive visual effects.
The bus interface supports drive SDA to accommodate larger or more capacitive interconnects, which is advantageous in densely wired panels or long trace runs.
The default pushpull configuration provides strong drive for common LED load types; opendrain can be selected in software to accommodate different wiring or load requirements without hardware changes.
The enable pin provides a straightforward mechanism to tristate outputs during reset, powerup, or fault conditions, contributing to safer and more controllable system behavior.
This description preserves the original product specifications and functions while presenting them in clear, customerfocused language.
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Fruugo ID:
463437131-975299420
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EAN:
6911013130063
Delivery & Returns
Dispatched within 5 days
Shipping from China.
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