Power Management. AT73C202 Datasheet

AT73C202 Datasheet PDF, Equivalent


Part Number

AT73C202

Description

Power Management

Manufacture

ATMEL Corporation

Total Page 21 Pages
PDF Download
Download AT73C202 Datasheet PDF


AT73C202 Datasheet
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 compati-
ble 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 con-
sumption 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 sup-
ply 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 dur-
ing sleep mode.
The 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 plug-
in, 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.
Power
Management for
Mobiles (PM)
AT73C202
Power and
Battery
Management
Unit for Cellular
Phone
Preliminary
2740B–PMGMT–05/03
1

AT73C202 Datasheet
Functional Diagram
Figure 1. AT73C202 Functional Diagram
D2 CHG-IN
CHG
C3
FLASH-LED
C1
BAT-VOLT
F5
AA-GND
E5
BB1
D4
VIN-REG1
G6
ECO-MODE
G5
B5 EN-ANA-B
ON-OFF
D5
UP-ON-OFF
C6
DC-ON
D6
VIN-REG2
A5
CREF
C7
A3 VIN-RF
EN-RF1
B2
VIN > 2.6V
VREF
EN-RF2
C4
VIN-VIB
D7
EN-VIB
E6
BUZ-IN
C5
D-VCC
G1
SIM-EN
G3
SIM-1V8/2V8
F4
RESET-IN
E4
CLK-IN
F3
DATA-IO
G2
D3
GATE-CHG
Charger
Controller
Reset
Generator
DC-DC
Converter
1.8V/2.5V
EN 300mA
I/O PAD LDO
EN 2.8V/130mA
Analog LDO
EN 2.7V/2.8V/130mA
BAT-RTC
EN 2.4V/2.7V/2mA
VCC-RTC
1.5V/0.5mA
RF1 LDO
2.8V/130mA
RF2 LDO
2.8V/130mA
VIBRATOR LDO
2.8V/130mA
SIM LDO
1.8V/2.8V/10mA
SIM Level Shifter
VBAT
LED-OUT
D1
D-GND
E1
C2
RES-B
LX
V-CORE
GND-REG1
F6
F7
G4
G7
V-PAD
B6
A-VCC
A-GND
B4
A7
V-BCK
A6
V-RTC
B7
V-RF1
B1
V-RF2
GND-RF
V-VIB
A1
A2
E7
BUZ-OUT
B3
BUZ-GND
SIM-VCC
A4
E3
SIM-RST
SIM-CLK
SIM-IO
F1
F2
E2
2 AT73C202
2740B–PMGMT–05/03


Features Datasheet pdf Features • 300mA/1.8V/2.5V Switching R egulator for Baseband Supply • 2.8V/8 0mA 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 L DO Regulator • Ultra Low-power RTC LD O Voltage Regulator • Backup Battery Charger • Li-Ion or Li-polymer Batter y Charger Controller • Buzzer and Vib rator Drivers • Charging LED Driver Power Management Start-up Controller and Reset Generation • SIM Level Shi fters and SIM 10mA/1.8V/2.8V LDO Voltag e Regulator • Ultra-low Sleep Mode Cu rrent Consumption (17 µA typ) • Over and Under Voltage Protections • Over Temperature Protection • Low-power M ode and Sleep Mode • Straight and Eas y Interfacing to any Baseband Controlle r • Small 5x5mm, Forty-nine Ball FBGA Package Description The AT73C202 is a low-cost, ultra low-power, power and ba ttery management IC designed to interfa ce directly with state-of-the-art cellular phones, for example .
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