AT73C202

Output Voltage Range :
Output Current :
Input Voltage Range :
Input Current :
Power Dissipation :
Operating Temperature Range :
Packaging :
Mounting Style : SMD/SMT
Package / Case : FBGA-49


Features:

• 300mA/1.8V/2.5V Switching Regulator for Baseband Supply
• 2.8V/80mA LDO for Baseband Pad Supply
• Two 130mA/2.8V Low-noise, High PSRR RF LDO Voltage Regulators
• 130mA/2.7V/2.8V Baseband Low-noise, High PSRR Analog LDO Regulator
• Ultra Low-power RTC LDO Voltage Regulator
• Backup Battery Charger
• Li-Ion or Li-polymer Battery Charger Controller
• Buzzer and Vibrator Drivers
• Charging LED Driver
• Power Management Start-up Controller and Reset Generation
• SIM Level Shifters and SIM 10mA/1.8V/2.8V LDO Voltage Regulator
• Ultra-low Sleep Mode Current Consumption (17 µA typ)
• Over and Under Voltage Protections
• Over Temperature Protection
• Low-power Mode and Sleep Mode
• Straight and Easy Interfacing to any Baseband Controller
• Small 5x5mm, Forty-nine Ball FBGA Package



Description

The AT73C202 is a low-cost, ultra low-power, power and battery management IC designed to interface directly with state-of-the-art cellular phones, for example with 2.5G GSM phones. It includes all required power supplies tailored to be fully compatible with the sub-systems of recent mobile phone chipsets, including the RF, analog and digital (DSP, microcontroller, memories) sections.

The AT73C202 integrates a step-down DC-DC converter that supplies 300 mA with internal switches and two levels of voltage programming for the baseband core (1.8V and 2.5V). A low-power mode is available in order to minimize standby current consumption during the "quiet" transmission periods.

In addition, the AT73C202 includes a lowcost battery charger, using a simple external PNP transistor for Li-Ion or Li-Polymer batteries. Battery operating conditions are maintained within safe limits under hardware control during the start-up procedure (when the phone is turned on or a charger is plugged in). The battery pre-charge is also integrated and self-operated by the AT73C202. On completion the fast charge and end-of-charge procedure is transferred to the baseband software.

The AT73C202 integrates 7 low-dropout linear regulators specifically designed to supply RF (x2), analog, memories, etc. It also includes a back-up battery charger and an ultra low-power regulator dedicated to the baseband real-time clock (RTC) supply during sleep mode.

The AT73C202 hardwired start-up mechanism (power management controller state machine) ensures safe telephone operation during the wake-up and shut-down procedures, and during the multiple real-life operating conditions of a mobile phone (such charger plugin, plug-out, battery plug-in, plug-out, low or dead battery, etc.).

The AT73C202 is packaged into a 49 ball (7x7 matrix), 0.65mm pitch, 5mm x 5mm outline FBGA package.



Parameters:

Technical/Catalog Information	AT73C202
Vendor	Atmel
Category	Integrated Circuits (ICs)
Applications	Cell Phone
Current - Supply	-
Voltage - Supply	3 V ~ 5.5 V
Package / Case	49-FBGA
Packaging	Tape & Reel (TR)
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	AT73C202 AT73C202