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PCA9745B

NXP
Part Number PCA9745B
Manufacturer NXP
Description LED driver
Published Sep 6, 2023
Detailed Description PCA9745B 16-channel SPI serial bus 57 mA/20 V constant current LED driver Rev. 1.1 — 10 June 2020 Product data sheet ...
Datasheet PDF File PCA9745B PDF File

PCA9745B
PCA9745B

Overview
PCA9745B 16-channel SPI serial bus 57 mA/20 V constant current LED driver Rev.
1.
1 — 10 June 2020 Product data sheet 1.
General description The PCA9745B is a daisy-chain SPI-compatible 4-wire serial bus controlled 16-channel constant current LED driver optimized for dimming and blinking 57 mA Red/Green/Blue/Amber (RGBA) LEDs in amusement products.
Each LED output has its own 8-bit resolution (256 steps) fixed frequency individual PWM controller that operates at 31.
25 kHz with a duty cycle that is adjustable from 0 % to 100 % to allow the LED to be set to a specific brightness value.
An additional 8-bit resolution (256 steps) group PWM controller has both a fixed frequency of 122 Hz and an adjustable frequency between 15 Hz to once every 16.
8 seconds with a duty cycle that is adjustable from 0 % to 99.
6 % that is used to either dim or blink all LEDs with the same value.
Each LED output can be off, on (no PWM control), set at its individual PWM controller value or at both individual ...


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