AS3527 - austriamicrosystems AG

AS3527 Advanced Audio Processor System

The AS3665 is a capacitive low noise charge pump with 9 current sources. The charge pump automatically switches between 1:1 and 1:1.5 modes. The connected current sources have a very low voltage compliance to improve efficiency of the whole system. Three current sources have the possibility to operate either from VBAT or VCP (especially useful for red LEDs)..

Features

High efficiency capacitive 150mA charge pump with 1:1, 1:1.5 and 1:2 modes with automatic mode switching; 1:2 mode can be disabled 9 Channel High Side 20mA Current sources - Less than 50mV at 10mA dropout voltage - LED7,8,9 either powered by VBAT or VCP Advanced Command based Pattern Generator - 96 x 16 bits program memory - Dedicated lighting commands like logarithmic fade - Programming control and conditional jumps Audio Controlled Lighting with internal digital filters 3 Sequencers - Dynamically mapped to 9 PWM generators - Internal/External Synchronization 9 PWM generators (12 bit resoluti.