Management System. ADP3502 Datasheet

ADP3502 System. Datasheet pdf. Equivalent

Part ADP3502
Description CDMA Power Management System
Feature a FEATURES 11 LDOs Optimized for Specific CDMA Subsystems 4 Backup LDOs for Standby Mode Operation U.
Manufacture Analog Devices
Datasheet
Download ADP3502 Datasheet



ADP3502
a
CDMA Power Management System
ADP3502
FEATURES
11 LDOs Optimized for Specific CDMA Subsystems
4 Backup LDOs for Standby Mode Operation
Ultra Low Standby Supply Current
High Accuracy Battery Charger (0.7%)
3 Li-Ion Battery Charge Modes
5 mA Precharge
Low Current Charge
Full Current Charge
Integrated RTC
Ambient Temperature: –30؇C to +85؇C
64-Lead 7 mm ؋ 7 mm ؋ 1 mm TQFP Package
APPLICATIONS
CDMA/CDMA2000/PCS Handsets
GENERAL DESCRIPTION
The ADP3502 is a multifunction chip optimized for CDMA-1x
cell phone power management. It offers a total power solution
for the handset baseband and RF section, including LDOs to
power 11 subsystems. Also integrated are a real-time clock
(RTC), serial bus interface, and charging control for Li-Ion/
Li-Polymer batteries. Sophisticated controls are available for
power-up during battery charging, keypad interface, GPIO/INT
function, and RTC function.
The ADP3502 is optimized for CDMA handsets powered by
single-cell Li-Ion batteries. Its high level of integration sig-
nificantly reduces the design effort, number of discrete
components, and solution size/cost. The main-sub LDO
structure reduces the standby current consumption, and as a
result, greatly extends the standby time of the phone. System
operation has been proven to be fully compatible with
MSM51xx-based designs.
The ADP3502 comes in a 64-lead 7 mm × 7 mm × 1 mm
TQFP package and is specified over a wide temperature range of
–30°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
LOGIC
BLOCK
POWER ON
DELAY 10ms
KEYPAD I/F
GPIO
INTERRUPT
CONTROL
LDO
CONTROL
SERIAL I/F
RESET
32kHz OUTPUT
CONTROL
RESET
OUTPUT
RTC
COUNTER
STAY-ALIVE
TIMER
ANALOG
BLOCK
BATTERY
CHARGER
REFERENCE
LDO1 TO LDO11
VOLTAGE
DETECTOR
ADP3502
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved.



ADP3502
ADP3502–SPECIFICATIONS
MAIN FUNCTIONS (TA = –30؇C to +85؇C, CVBAT = 1 F MLCC, VBAT = 3.6 V, unless otherwise noted. See Table II for COUT.)
Parameter
Symbol Conditions
Min Typ Max Unit
SHUTDOWN GND CURRENT
Power OFF
IGND
TA = –20°C to +60°C
LDO3b: ON, Connect to RTCV
through Schottky Diode
RTC/32K OSC: Active
All Other LDOs: OFF
All Logic Inputs: VBAT or GND
MVBAT: OFF
25 45
µA
OPERATING GND CURRENT
Standby Mode Operation (Light Load)
Standby Mode Operation (Midload)
Active Operation
IGND
LDO1b, LDO2b, LDO3b,
LDO6b: ON
IO = 1 mA for LDO3b and LDO6b
IO = 3 mA for LDO1b
IO = 300 µA for LDO2b
All Other LDOs: OFF
RTC/32K OSC: Active
MVBAT: OFF
All Logic Output: No Load
LDO1, LDO2, LDO3, LDO6,
All Sub-LDOs: ON, IO = 70% Load
All Other LDOs: OFF
RTC/32K OSC: Active
MVBAT: ON
All Logic Outputs: No Load
LDO5: OFF
All Other LDOs: ON, 70% Load
RTC/32K OSC: Active
All Logic Outputs: No Load
MVBAT: ON
60 125 µA
300 µA
700 µA
THERMAL SHUTDOWN THRESHOLD
160 °C
THERMAL SHUTDOWN HYSTERESIS
35 °C
ADAPTER/ADPSUPPLY VOLTAGE RANGE VADP
5 12 V
VBAT VOLTAGE RANGE
VBAT
3.3 5.5 V
LDO SPECIFICATIONS (TA = 25؇C, CVBAT = 1 F MLCC, VBAT = VOUT + 1 V, NRCAP = 0.1 F. See Table II for COUT.)
Parameter
Symbol Conditions
Min Typ Max
BASEBAND VDD MAIN-LDO (LDO1a)
Output Voltage
Output Capacitor Required for Stability
Dropout Voltage
Start-Up Time from Shutdown
VLDO1a
CLDO1a
VDO
IO = 1 mA to 150 mA
TA = –30°C to +85°C
IO = 150 mA
2.81 2.90 2.99
2.2
200
250
BASEBAND VDD SUB-LDO (LDO1b)
Output Voltage
VLDO1b IO = 3 mA
TA = –30°C to +85°C
2.8 2.87 3.0
Unit
V
µF
mV
µs
V
–2– REV. 0





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)