Features • DC to DC Step Down 1.2 A, 0.9V (Dynamically Adjustable to 0.87V/1.1V/1.2V) • DC to DC step Down 1.2 A, 1.2V (Dynamically Adjustable to 1.0V/1.1V/1.3V) or 1.75V (Dynamically Adjustable 1.65V/1.70V/1.80V) • DC to DC Step Down 1.2 A, 1.8V (Dynamically Adjustable to 1.70V/1.75V/1.85V) or 2.5V (Dynamically Adjustable 2.3V/2.4V/2.6V) • DC to DC Step Up/Down 520 mA, 3.3V (Dynamically Adjustable to 3.0V/3.1V/3.4V) • Dual Battery Chargers: Li+ Precharge, Fast Charge, Top-up Charge, 4.1V (or • • • • • • • • • • Adjustable), Processor Tuned Algorithms – USB Trickle Charge: Precharge Flat Battery from USB Pre-enumeration, then Autowake of Processor at 3.8V Battery Level – Battery Charge Select: 25 mA to 500 mA – Real-time Charge Inhibit: Allows Charge Suspend (e.g. During TX Slots) Supply Monitor of Four Power Sources: Thermistors, Temperature, DC/DC Rails, all Supplied with Out-of-regulation Threshold Detection SIM Interface: SIM / USIM, 1.8V / 3.0V Standards, Integrated TX and RX Data FIFO SPI Control Interface: Up to 13 MHz; Tuned for SA1110/PXA250/PXA255 1.2 MHz SPI, 128 8-bit Registers Power on Reset: For SA1110/PXA250/PXA255 Architectures plus Additional Sequenced System Level Resets Voltage and Temperature Supervision Calibrated Voltage Reference 8-bit ADC with 5-input Multiplexer Integrated Oscillator, Start-up and Self-protection Circuitry Off Power: 60 µA with External “Button Select” for Restart Applications Include: PDAs, PCMCIA Cards, SMART Phones, Pocket PCs, 3G Applications, Intel® XScale™ Powered Applications Description Power Management AT73C203 Power Management IC for Datacom Platforms Summary The AT73C203 device provides an integrated solution to portable and handheld applications built around microprocessors requiring “smart” power management functions, such as PDAs, Palmtop computers, point-of-sales terminals, 3G modems, etc. Its compact package outline and small size of external components make the AT73C203 suitable for PCMCIA card power management as well. The AT73C203 integrates a power switch controller that, when connected to an external power switch, may be used for automatically selecting one of four possible power sources: • Internal battery • External battery • Plugtop power supply unit 5V (PSU) • PC Host USB supply The power switch output (VDD-PSU line) is connected directly to external auxiliary components such as a radio or any other “current hungry” module. The AT73C203 is also equipped with four digital rails from VDD-PSU to supply a baseband chip, a reset generator for the baseband chip, and a SPI interface to control the AT73C203 via an internal register set. The USIM interface allows the application processor to communicate with and control a USIM card. Charge control enables the application processor to charge the battery from the PSU or USB. A state machine can also determine whether to charge the internal battery through USB at start-up. Additionally, hardware monitoring gives information to the application processor when a voltage drop occurs (programmed via internal registers). 2742BS–PMGMT–03/04 Note: This is a summary document. A complete document is available on our Web site at www.atmel.com. Functional Diagram Figure 1. AT73C203 Functional Diagram Stand Alone LDO Regulator Digital Control Power Switch DC-DC Converter Buck 0.9 V (0.87 V to 1.2 V)/1.2 A Internal 900 kHZ Oscillator Very Low Temperature Shift DC-DC Converter Buck 1.2 V (1 V to 1.8 V)/1.2 A Serial Interface Clock Distributor 8-bit ADC Power Management State Machine DC-DC Converter Buck 1.8 V (1.7 V to 2.6 V)/1.2 A Measurement Bridge ISO 7816 UART DC-DC Converter Boost - LDO 3.3V (3 V to 5.4 V)/520 mA Temperature Sensor SIM Level Shifter Battery Charger 2 SIM LDO 1.8 V/2.8 V/10 mA Internal Voltage Reference AT73C203 2742BS–PMGMT–03/04 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel: (49) 71-31-67-0 Fax: (49) 71-31-67-2340 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel: (33) 2-40-18-18-18 Fax: (33) 2-40-18-19-60 ASIC/ASSP/Smart Cards 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel: 1(719) 576-3300 Fax: 1(719) 540-1759 Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France Tel: (33) 4-76-58-30-00 Fax: (33) 4-76-58-34-80 Zone Industrielle 13106 Rousset Cedex, France Tel: (33) 4-42-53-60-00 Fax: (33) 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel: 1(719) 576-3300 Fax: 1(719) 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland Tel: (44) 1355-803-000 Fax: (44) 1355-242-743 Literature Requests www.atmel.com/literature Disclaimer: Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. © Atmel Corporation 2004. All rights reserved. Atmel ® and combinations thereof are the registered trademarks of Atmel Corporation or its subsidiaries. Intel ® is the registered trademark of Intel Corporation, XSCALE ™ is the trademark of Intel Corporation. Other terms and product names may be the trademarks of others. Printed on recycled paper. 2742BS–PMGMT–03/04