AT73C203

Output Voltage Range :
Output Current :
Input Voltage Range :
Input Current :
Power Dissipation :
Operating Temperature Range :
Packaging :
Mounting Style : SMD/SMT
Package / Case : BGA-100


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

The AT73C203 device provides an integrated solution to portable and handheld applications built around micro-processors 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 applica-tion 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).


Parameters:

Technical/Catalog Information	AT73C203
Vendor	Atmel
Category	Integrated Circuits (ICs)
Applications	Power Management - Hand-Held Devices
Current - Supply	100A
Voltage - Supply	2.4 V ~ 2.6 V
Package / Case	100-FBGA
Packaging	Tape & Reel (TR)
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	AT73C203 AT73C203