ADP3404ARU-REEL Analog Devices Inc, ADP3404ARU-REEL Datasheet

ADP3404ARU-REEL

Manufacturer Part Number
ADP3404ARU-REEL
Description
Manufacturer
Analog Devices Inc
Datasheet

Specifications of ADP3404ARU-REEL

Battery Type
Li-Ion/NiMH
Output Current
175uA
Output Voltage
2.45V
Operating Temp Range
-20C to 85C
Package Type
TSSOP
Mounting
Surface Mount
Pin Count
28
Operating Temperature Classification
Commercial
Lead Free Status / Rohs Status
Not Compliant
a
GENERAL DESCRIPTION
The ADP3404 is a multifunction power management system IC
optimized for GSM cell phones. The wide input voltage range of
3.0 V to 7.0 V makes the ADP3404 ideal for both single cell
Li-Ion and three cell NiMH designs. The current consumption
of the ADP3404 has been optimized for maximum battery life,
featuring a ground current of only 230 µA when the phone is in
standby (digital LDO, analog LDO, and SIM card supply active).
An undervoltage lockout (UVLO) prevents the startup when
there is not enough energy in the battery. All four integrated
LDOs are optimized to power one of the critical sub-blocks of the
phone. Their novel anyCAP
small output capacitors for stability, and the LDOs are insensitive
to the capacitors’ equivalent series resistance (ESR). This makes
them stable with any capacitor, including ceramic (MLCC) types
for space-restricted applications.
A step-up converter is implemented to supply both the SIM
module and the level translation circuitry to adapt logic signals
for 3 V and 5 V SIM modules. Sophisticated controls are avail-
able for power-up during battery charging, keypad interface and
charging of an auxiliary back-up capacitor for the real-time clock.
These allow an easy interface between ADP3404, GSM proces-
sor, charger, and keypad. Furthermore, a reset circuit and a
thermal shutdown function have been implemented to support
reliable system design.
anyCAP is a registered trademark of Analog Devices, Inc.
®
architecture requires only very
GSM Power Management System
PWRONKEY
ANALOGON
PWRONIN
SIMPROG
RESETIN
RESCAP
SIMGND
SIMBAT
DATAIO
CHRON
SIMON
ROWX
CLKIN
CAP
CAP+
FUNCTIONAL BLOCK DIAGRAM
ADP3404
TRANSLATION
LOGIC LEVEL
CHARGE
PUMP
SEQUENCING
PROTECTION
POWER-UP
VBAT
LOGIC
AND
I/O
CLK
REF
RST
+
ADP3404
XTAL OSC
BUFFER
RTC LDO
ANALOG
DIGITAL
LDO
LDO
LDO
VCC
RESET
VRTC
VTCXO
VCCA
VSIM
REFOUT
DGND
AGND

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ADP3404ARU-REEL Summary of contents

Page 1

GENERAL DESCRIPTION The ADP3404 is a multifunction power management system IC optimized for GSM cell phones. The wide input voltage range of 3 7.0 V makes the ADP3404 ideal for both single cell Li-Ion and three cell ...

Page 2

ADP3404–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter SHUTDOWN SUPPLY CURRENT VBAT = Low (UVLO Low) VBAT = High (UVLO High) OPERATING GROUND CURRENT VCC, VRTC, VCCA, REFOUT On VCC, VRTC, VCCA, REFOUT and VSIM On All LDOs and VSIM On All LDOs and ...

Page 3

Parameter CRYSTAL OSCILLATOR LDO (VTCXO) Output Voltage Line Regulation Load Regulation 3 Output Capacitor Dropout Voltage Ripple Rejection Output Noise Voltage VOLTAGE REFERENCE (REFOUT) Output Voltage Line Regulation Load Regulation Ripple Rejection Maximum Capacitive Load Output Noise Voltage REAL-TIME CLOCK ...

Page 4

ADP3404–SPECIFICATIONS Parameter SIM INTERFACE VSIM = 5 V RST RST CLK CLK I/O I/O I/O I/O VSIM = 3 V RST RST CLK CLK I/O I/O I/O I/O I/O Pull-Up Resistance to VSIM Max Frequency (CLK) Prop Delay (CLK) Output ...

Page 5

... Package Model Range Description ° ° ADP3404ARU – +85 C 28-Lead TSSOP CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADP3404 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges ...

Page 6

ADP3404 Inputs UVLO CHRON PWRONKEY Don’t care Bold denotes the active control signal. VCC Off ...

Page 7

PWRONIN, SIMON, AND ANALOGON 250 PWRONIN AND SIMON 200 PWRONIN 150 100 VBAT – V 160 140 120 100 100 LOAD CURRENT – mA ...

Page 8

ADP3404 I LOAD I = 200 A VCC TIME – 200 s/DIV I LOAD VCCA TIME – 100 s/DIV PWRONIN AND ANALOGON (2V/DIV) VCCA (100mV/DIV) VTCXO (100mV/DIV) VCC (100mV/DIV) TIME – 50 s/DIV MLCC CAPS I ...

Page 9

VCCA TCXO 400 300 200 REF 100 0 10 100 1k FREQUENCY – Hz THEORY OF OPERATION The ADP3404 is a power management chip optimized for use with GSM baseband chipsets in handset applications. Figure 1 shows a ...

Page 10

ADP3404 300 6-LAYER BOARD = 62 C/W JA 250 VBAT = 5.5V 200 VBAT = 6V 150 100 AMBIENT TEMPERATURE – C Low Dropout Regulators (LDOs) The ADP3404 high-performance LDOs are optimized for their ...

Page 11

Undervoltage Lockout (UVLO) The UVLO function in the ADP3404 prevents startup when the initial voltage of the main battery is below the 3.2 V threshold. If the battery is this low with no load, there will be little or no ...

Page 12

ADP3404 Charger Diode Selection The diode shown in Figure 2 is used to prevent the battery from discharging into the charger turn-on setting resistors, R1 and R2. A Schottky diode is recommended to minimize the voltage difference from the charger ...

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