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PCA9655EDT
- Product Category: I/O Expanders
- Mfr. Part # PCA9655EDT
- Package: TSSOP24
- Lead Free Status /RoHS Status:
- Data Sheet: PCA9655EDT Datasheet
- Inventory: In Stock
- Unit Price: Inquiry
- Quantity: -+
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Mfr. Part #: PCA9655EDT
- Product Details
Product Details
General description
The PCA9685 is an I2C-bus controlled 16-channel LED controller optimized for LCD Red/Green/Blue/Amber (RGBA) color backlighting applications. Each LED output has its own 12-bit resolution (4096 steps) fixed frequency individual PWM controller that operates at a programmable frequency from a typical of 40 Hz to 1000 Hz with a duty cycle that is adjustable from 0 % to 100 % to allow the LED to be set to a specific brightness value. All outputs are set to the same PWM frequency.• The PCA9685 allows staggered LED output on and off times to minimize current surges. The on and off time delay is independently programmable for each of the 16 channels. This feature is not available in PCA9635.
• The PCA9685 has 4096 steps (12-bit PWM) of individual LED brightness control. The PCA9635 has only 256 steps (8-bit PWM).• When multiple LED controllers are incorporated in a system, the PWM pulse widths between multiple devices may differ if PCA9635s are used. The PCA9685 has a programmable prescaler to adjust the PWM pulse widths of multiple devices.
• The PCA9685 has an external clock input pin that will accept user-supplied clock (50 MHz max.) in place of the internal 25 MHz oscillator. This feature allows synchronization of multiple devices. The PCA9635 does not have external clock input feature.
• Like the PCA9635, PCA9685 also has a built-in oscillator for the PWM control.
However, the frequency used for PWM control in the PCA9685 is adjustable from about 40 Hz to 1000 Hz as compared to the typical 97.6 kHz frequency of the PCA9635. This allows the use of PCA9685 with external power supply controllers. All bits are set at the same frequency.
• The Power-On Reset (POR) default state of LEDn output pins is LOW in the case of PCA9685. It is HIGH for PCA9635.
ICCHIPS, where the pulse of innovation meets the heartbeat of wholesale excellence. Unveil the future of electronic components with our flagship product, the PCA9655EDT. As your conduit to groundbreaking technology, we stand as the bridge between visionary suppliers and pioneering manufacturers, committed to orchestrating seamless transactions that cater to the ever-evolving needs of the electronics industry.
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Please send inquiry, we will respond immediately.
Mfr. Part #: PCA9655EDT
