PCA9959 is a daisy-chain SPI-compatible 4-wire serial bus controlled 24-channel constant preset current LED driver, optimized for dimming and blinking 63 mA Red/ Green/Blue/Amber (RGBA) LEDs.
Key Features
24 LED drivers, each output programmable at:.
Off.
On.
6 bits programmable LED brightness.
Programmable LED output delay to reduce EMI and surge currents.
Gradation control for all channels.
Each channel can assign to one of four gradation control groups.
64 grids for gradation control for each channel.
Programmable grid duration time.
Four preset current options for each channel during gradation control.
Full PDF Text Transcription for PCA9959 (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
PCA9959. For precise diagrams, and layout, please refer to the original PDF.
PCA9959 24-channel SPI serial bus 63 mA/5.5 V constant current LED driver Rev. 1.3 — 23 May 2022 Product data sheet 1 General description PCA9959 is a daisy-chain SPI-com...
View more extracted text
duct data sheet 1 General description PCA9959 is a daisy-chain SPI-compatible 4-wire serial bus controlled 24-channel constant preset current LED driver, optimized for dimming and blinking 63 mA Red/ Green/Blue/Amber (RGBA) LEDs. Each LED output has its own 6-bit resolution (64 steps) preset current configuration, with an absolute accuracy of ±8 %. PCA9959 supports up to four groups of LED gradation control, with each LED channel assigned to one of the groups. For each group, PCA9959 supports 64-grid brightness control, with the time duration of each grid adjustable from 2.5 μs to 1 ms. Each LED output can be off or on, se
PCA9959 Datasheet
