NXP PCA9952TW,118

线性3V5.5V57mA

Overview

The PCA9952 and PCA9955 are I²C-bus controlled 16-channel constant current LEDdriver optimized for dimming and blinking 57 mA Red/Green/Blue/Amber (RGBA) LEDs inamusement products. Each LEDn output has its own 8-bit resolution (256 steps) fixedfrequency individual PWM controller that operates at 31.25 kHz with a duty cycle that isadjustable from 0 % to 99.6 % to allow the LED to be set to a specific brightness value. Anadditional 8-bit resolution (256 steps) group PWM controller has both a fixed frequency of122 Hz and an adjustable frequency between 15 Hz to once every 16.8 seconds with aduty cycle that is adjustable from 0 % to 99.6 % that is used to either dim or blink all LEDswith the same value.

The Software Reset (SWRST) function allows the master to perform a reset of thePCA9952/55 through the I²C-bus, identical to the Power-On Reset (POR) that initializesthe registers to their default state causing the output current switches to be OFF (LED off).This allows an easy and quick way to reconfigure all device registers to the samecondition.

Features

Tape & Reel (TR) Package
Linear Type
Yes Internal Switch(s)
16 Number of Outputs
3V Voltage - Supply (Min)
5.5V Voltage - Supply (Max)
40V Voltage - Output
57mA Current - Output / Channel
PWM Dimming
Backlight Applications
Surface Mount Mounting Type