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Analog Devices Semiconductor Electronic Components Datasheet

ADP3408 Datasheet

GSM Power Management System

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ADP3408 pdf
a
GSM Power Management System
ADP3408
FEATURES
Handles all GSM Baseband Power Management
Six LDOs Optimized for Specific GSM Subsystems
Li-Ion and NiMH Battery Charge Function
Optimized for the AD20msp430 Baseband Chipset
APPLICATIONS
GSM/DCS/PCS/CDMA Handsets
GENERAL DESCRIPTION
The ADP3408 is a multifunction power system chip optimized
for GSM handsets, especially those based on the Analog
Devices AD20msp430 system solution. It contains six LDOs,
one to power each of the critical GSM sub-blocks. Sophisticated
controls are available for power-up during battery charging,
keypad interface, and RTC alarm. The charge circuit maintains
low current charging during the initial charge phase and provides
an end-of-charge signal when a Li-Ion battery is being charged.
The ADP3408 is specified over the temperature range of –20°C to
+85°C and is available in narrow body TSSOP-28 pin package.
FUNCTIONAL BLOCK DIAGRAM
VBAT VBAT2 VRTCIN
PWRONKEY
ROWX
PWRONIN
TCXOEN
SIMEN
RESCAP
CHRDET
EOC
CHGEN
GATEIN
BATSNS
ISENSE
GATEDR
CHRIN
POWER-UP
SEQUENCING
AND
PROTECTION
LOGIC
SIM
LDO
DIGITAL
CORE LDO
ANALOG
LDO
TCXO
LDO
MEMORY
LDO
RTC
LDO
REF
BUFFER
VSIM
VCORE
VAN
VTCXO
VMEM
VRTC
26 REFOUT
RESET
BATTERY
CHARGE
CONTROLLER
BATTERY
CHARGE
DIVIDER
ADP3408
MVBAT
DGND
27 AGND
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.
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
© Analog Devices, Inc., 2001


Analog Devices Semiconductor Electronic Components Datasheet

ADP3408 Datasheet

GSM Power Management System

No Preview Available !

ADP3408 pdf
ADP3408–SPECIFICATIONS1
(–20؇C TA +85؇C, VBAT = VBAT2 = 3 V–5.5 V, CVSIM = CVCORE = CVAN =
CVMEM = 2.2 F, VTCXO = 0.22 F, CVRTC = 0.1 F, CVBAT = 10 F, minimum loads applied on all outputs, unless otherwise noted.)
Parameter
Symbol
Condition
Min Typ Max Unit
SHUTDOWN SUPPLY CURRENT
VBAT 2.5 V
(Deep Discharged Lockout Active)
2.5 V < VBAT 3.2 V
(UVLO Active)
VBAT > 3.2 V
OPERATING GROUND CURRENT
VSIM, VCORE, VMEM, VRTC On
All LDOs On
ICC
IGND
UVLO ON THRESHOLD
VBAT
VBAT = VBAT2 = 2.3 V
VBAT = VBAT2 = 3.0 V
VBAT = VBAT2 = 4.0 V
VBAT = 3.6 V
Minimum Loads
Minimum Loads
Maximum Loads
7 20 µA
30 55 µA
45 80 µA
225 300 µA
345 450 µA
1.0 3.0 % of max
load
current
3.2 3.3 V
UVLO HYSTERESIS
VBAT
200 mV
DEEP DISCHARGED LOCKOUT ON
THRESHOLD
VBAT
2.4 2.75 V
DEEP DISCHARGED LOCKOUT
HYSTERESIS
INPUT HIGH VOLTAGE
(PWRONIN, TCXOEN, SIMEN,
CHGEN, GATEIN)
VBAT
VIH
100
2.0
mV
V
INPUT LOW VOLTAGE
(PWRONIN, TCXOEN, SIMEN,
CHGEN, GATEIN)
VIL
INPUT HIGH BIAS CURRENT
(PWRONIN, TCXOEN, SIMEN,
CHGEN, GATEIN)
IIH
INPUT LOW BIAS CURRENT
(PWRONIN, TCXOEN, SIMEN,
CHGEN, GATEIN)
IIL
PWRONKEY INPUT HIGH VOLTAGE
PWRONKEY INPUT LOW VOLTAGE
PWRONKEY INPUT PULL-UP
RESISTANCE TO VBAT
VIH
VIL
THERMAL SHUTDOWN THRESHOLD2
0.4 V
1.0 µA
–1.0 µA
0.7 × VBAT
70 100
0.3 × VBAT
130
V
V
k
160 ºC
THERMAL SHUTDOWN HYSTERESIS
45 ºC
ROWX CHARACTERISTICS
ROWX Output Low Voltage
ROWX Output High Leakage
Current
SIM CARD LDO (VSIM)
Output Voltage
Line Regulation
Load Regulation
Output Capacitor Required for Stability
Dropout Voltage
DIGITAL CORE LDO (VCORE)
Output Voltage
ADP3408ARU-2.5
ADP3408ARU-1.8
Line Regulation
Load Regulation
Output Capacitor Required for Stability
VOL
IIH
VSIM
VSIM
VSIM
CO
VDO
VCORE
VCORE
VCORE
VCORE
CO
PWRONKEY = Low
IOL = 200 µA
PWRONKEY = High
V(ROWX) = 5 V
Line, Load, Temp
Min Load
50 µA ILOAD 20 mA,
VBAT = 3.6 V
VO = VINITIAL – 100 mV,
ILOAD = 20 mA
Line, Load, Temp
Line, Load, Temp
Min Load
50 µA ILOAD 100 mA,
VBAT = 3.6 V
0.4 V
1 µA
2.80 2.85 2.92 V
2 mV
1 mV
2.2 µF
35 100 mV
2.40 2.45 2.50 V
1.75 1.80 1.85 V
2 mV
7 mV
2.2 µF
–2– REV. 0


Part Number ADP3408
Description GSM Power Management System
Maker Analog Devices
Total Page 16 Pages
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