AS3654 Product Brief, Confidential austriamicrosystems Product Brief, Confidential AS3654 Power Management Unit with 18 Bit Audio DAC + Headphone Amplifier, DCDC Charger, 3 Buck DCDCs, 3 Boost DCDCs, 5 LDOs, Current Sinks, ADC 1 General Description The AS3654 is a highly integrated solution for power supply generation and monitoring, battery management including charging. It is controlled via a serial control interface and integrates all necessary system specific functions such as clock, reset and interrupt generation, voltage and temperature monitoring. 2 Key Features System Control − Serial Control Interface − On/Off Control Module − Reset Generation for system controller − Programmable Interrupt Controller − Watchdog − Low power off mode (9µA; 2.5V LDO on) Supply Voltage Generation − 1 RF Programmable Low Noise LDOs (400mA) − 1 RF Programmable Low Noise LDOs (150mA)2 RF Programmable Low Noise LDOs (150mA) − 2 Programmable Digital Low Power LDOs (200mA) − 2 General Purpose PWM DC/DC step up converter with two programmable current sinks (e.g. for white led) − 3 General Purpose high efficiency DC/DC step down converter − 1 Low noise charge pump with 5V output voltage − 1 Ultra Low Power 2.5V LDO (always on) Current sinks − 4 programmable(6-bit) from 0.625 to 40mA optional useable as GPIOs − 3 programmable high voltage (15V) (6-bit) from 0.625 to 40mA − internal PWM generator − 40µs conversation time Battery Management − Full featured chemistry independent step down charger with included Gas Gauge and Current limitation − 0.2 Ω Battery switch for start-up during trickle charging − Integrated USB charger up to 400mA Power Management Features − Wide Battery Supply Range 3.0…5.5V − On-Chip Bandgap Tuning for High Accuracy (±1%) − Current protection − Thermal Protection with internal temperature sensor Audio − 18 Bit Audio DAC − Two Digital Audio Inputs (I2S interface) − 2.9V low Noise LDO for Audio DAC − Headphone Amplifier Output with GND separation − GND Buffer for Headphone Amplifier − Line/ Headphone output with GND separation Programmable System clock − 1.6 MHz to 2.3 MHz with 100 kHz steps Package − BGA100 9x9mm, 0.8mm pitch 3 Application Power Management Unit 1 Cell Li+ or 3 Cell NiMH powered devices Car battery powered systems with and without internal battery 10-bit Successive Approximation ADC www.austriamicrosystems.com (ptr) Revision 1.2.1 / 20060613 1-3 AS3654 Product Brief, Confidential austriamicrosystems 4 Block Diagram DCDC Step Down VBUS USB Charger VCHARGER 3 x 0.6V-3.4V / 500mA VOUT2 VOUT3 DCDC Step Down General Purpose ADC Step Down DCDC (Input 5V-15V/50V) Overtemp Protection Watchdog Voltage Monitors / Reset Boot ROM Step Down Charger LiIon Battery Fuel Gauge SCL LDO 0.75V-2.5V VSUPPLY Interrupt SDA DCDC Step Down VDIG1 200mA AS3654 Power and Audio Management Unit Two Wire Interface I2S Input 1 I2S I2S Input 2 I2S Four GPIO or Current Sources GPIO or Current Sources VDIG2 200mA LDO 0.75V-2.5V LDO 1.85V-3.4V VRF1 400mA LDO 1.85V-3.4V VRF2 150mA Charge Pump VCPOUT 5V/100mA DCDC Step Up (Voltage) VSTEPUP1 DCDC Step Up (Voltage or Current) VSTEPUP2 18 Bit Stereo Audio DAC LDO 2.9V VDAC www.austriamicrosystems.com (ptr) VSUPPLY, VOUT1-3 VOUT1 VSUPPLY, VOUT1-3 Figure 1 – AS3654 Block Diagram Line Out LineIn LineOut Revision 1.2.1 / 20060613 Headphone Out Headphone 2-3 AS3654 Product Brief, Confidential austriamicrosystems Copyright Copyright © 1997-2006, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, AustriaEurope. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks of their respective companies. Disclaimer Devices sold by austriamicrosystems AG are covered by the warranty and patent identification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. 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Contact Information Headquarters: austriamicrosystems AG Business Unit Communications A 8141 Schloss Premstätten, Austria T. +43 (0) 3136 500 0 F. +43 (0) 3136 5692 [email protected] For Sales Offices, Distributors and Representatives, please visit: www.austriamicrosystems.com austriamicrosystems www.austriamicrosystems.com (ptr) – a leap ahead Revision 1.2.1 / 20060613 3-3