AS3665-DB ams

austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: ams sales ams.com Please visit our website at www.ams.com Datasheet, Confidential AS3665 9 Channel Advanced Command Driven RGB/White LED Driver 1 General Description 2 Key Features High efficiency capacitive 150mA charge pump with The AS3665 is a capacitive low noise charge pump with 1:1, 1:1.5 and 1:2 modes with automatic mode 9 current sources. The charge pump automatically switching 1:2 mode can be disabled switches between 1:1 and 1:1.5 modes. The connected current sources have a very low voltage compliance to 9 Channel High Side 20mA Current sources improve efficiency of the whole system. Three current - Less than 50mV at 10mA dropout voltage sources have the possibility to operate either from VBAT - LED7,8,9 either powered by VBAT or VCP or VCP (especially useful for red LEDs). Advanced Command based Pattern Generator The internal control is done by command based pattern - 96 x 16 bits program memory generators implemented by three sequencers. These - Dedicated lighting commands like logarithmic fade commands are optimized for lighting applications (e.g. - Programming control and conditional jumps ramp up brightness logarithmically). It includes high Audio Controlled Lighting with internal digital filters level commands like conditionals jumps and variables. 3 Sequencers Any of the three sequencers can be dynamically mapped to any of the 9 PWM generators for the LEDs. - Dynamically mapped to 9 PWM generators - Internal/External Synchronization The AS3665 supports an audio input and sophisticated 9 PWM generators (12 bit resolution) light patterns can be controlled by internal digital filters. - Automatic RGB Color Correction by TAMB 2 The AS3665 is controlled by I C mode. Synchronization 2 I C interface with dedicated EN pin over several AS3665 is possible by the TRIG pin. Available in WL-CSP-25 (2.610x2.675mm) 0.5mm The AS3665 is available in a space-saving WL-CSP-25 pitch (2.610x2.675mm) 0.5mm pitch and operates over the - 30C to +85C temperature range. 3 Applications Figure 1. Typical Operating Circuit RGB/White Fun or Event LED for mobile phones or por- table devices Lighting Management Unit 2 3 450 2 2 3 450 2 : : ./ 012 012 * * * 6 % & * 4 ( * %% * =6 = % ) * 7 > < * % / . * 5 < . + * 8 > * 9 , - % > > 012 AS3665 < www.austriamicrosystems.com (ptr) Revision 1.0.2 1 - 77 ams AG Technical content still valid *A ) * & %