a
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
CDMA Power Management System
ADP3502
FUNCTIONAL BLOCK DIAGRAM
LOGIC
BLOCK
POWER ON
DELAY 10ms
ANALOG
BLOCK
BATTERY
CHARGER
KEYPAD I/F
INTERRUPT
CONTROL
LDO
CONTROL
REFERENCE
GPIO
LDO1 TO LDO11
SERIAL I/F
RESET
VOLTAGE
DETECTOR
32kHz OUTPUT
CONTROL
RTC
COUNTER
GENERAL DESCRIPTION
RESET
OUTPUT
ADP3502
STAY-ALIVE
TIMER
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.
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–SPECIFICATIONS
MAIN FUNCTIONS
Parameter
SHUTDOWN GND CURRENT
Power OFF
(T
A
= –30 C to +85 C, C
VBAT
= 1 F MLCC, VBAT = 3.6 V, unless otherwise noted. See Table II for C
OUT
.)
Symbol Conditions
IGND
T
A
= –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
IGND
LDO1b, LDO2b, LDO3b,
LDO6b: ON
I
O
= 1 mA for LDO3b and LDO6b
I
O
= 3 mA for LDO1b
I
O
= 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, I
O
= 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
25
45
µA
Min
Typ
Max
Unit
OPERATING GND CURRENT
Standby Mode Operation (Light Load)
Standby Mode Operation (Midload)
300
µA
Active Operation
700
µA
THERMAL SHUTDOWN THRESHOLD
THERMAL SHUTDOWN HYSTERESIS
ADAPTER/ADPSUPPLY VOLTAGE RANGE VADP
VBAT VOLTAGE RANGE
VBAT
5
3.3
160
35
12
5.5
°C
°C
V
V
LDO SPECIFICATIONS
Parameter
(T
A
= 25 C, C
VBAT
= 1 F MLCC, VBAT = V
OUT
+ 1 V, NRCAP = 0.1 F. See Table II for C
OUT
.)
Symbol Conditions
V
LDO1a
C
LDO1a
V
DO
I
O
= 1 mA to 150 mA
T
A
= –30°C to +85°C
I
O
= 150 mA
Min
2.81
2.2
200
250
2.8
2.87
3.0
Typ
2.90
Max
2.99
Unit
V
µF
mV
µs
V
BASEBAND VDD MAIN-LDO (LDO1a)
Output Voltage
Output Capacitor Required for Stability
Dropout Voltage
Start-Up Time from Shutdown
BASEBAND VDD SUB-LDO (LDO1b)
Output Voltage
V
LDO1b
I
O
= 3 mA
T
A
= –30°C to +85°C
–2–
REV. 0
ADP3502
Parameter
BASEBAND AVDD MAIN-LDO (LDO2a)
Output Voltage
Symbol
V
LDO2a
Conditions
16 Steps, 20 mV/Step, I
O
= 50 mA
Code: 1000
Code: 0111
T
A
= 25°C
I
O
= 50 mA, T
A
= 25°C
16 Steps, 20 mV/Step, I
O
= 50 mA
Code: 1000
Code: 0111
T
A
= –30°C to +85°C
I
O
= 50 mA, T
A
= –30°C to +85°C
I
O
= 50 mA
f = 1 kHz
f = 100 Hz to 100 kHz
Min
Typ
Max
Unit
2.30
2.60
2.46
2.29
2.57
2.42
1
2.36
2.66
2.52
2.36
2.66
2.52
210
60
120
250
2.43
2.74
2.6
2.47
2.81
2.66
V
V
V
V
V
V
µF
mV
dB
µV
rms
µs
V
Output Default Voltage
Output Voltage
V
LDO2a
V
LDO2a
Output Default Voltage
Output Capacitor Required for Stability
Dropout Voltage
Ripple Rejection
Output Noise Voltage
Start-Up Time from Shutdown
BASEBAND AVDD SUB-LDO (LDO2b)
Output Voltage
REFO SWITCH
On Resistance
Off Leak
COIN CELL MAIN-LDO (LDO3a)
Output Voltage
Dropout Voltage
Output Capacitor Required for Stability
Start-Up Time from Shutdown
COIN CELL SUB-LDO (LDO3b)
Output Voltage
AUDIO LDO (LDO4)
Output Voltage
Output Capacitor Required for Stability
Dropout Voltage
Ripple Rejection
Output Noise Voltage
Start-Up Time from Shutdown
VIBRATOR LDO (LDO5)
Output Voltage
Dropout Voltage
Output Capacitor Required for Stability
BASEBAND CORE MAIN-LDO (LDO6a)
Output Voltage
Output Capacitor Required for Stability
Dropout Voltage
Start-Up Time from Shutdown
V
LDO2a
C
LDO2a
V
DO
V
NOISE
V
LDO2b
I
O
= 300
µA,
V
LDO2MAIN
= 2.6 V
T
A
= –30°C to +85°C
T
A
= –30°C to +85°C, I
O
= 500
µA
LDO2: ON, Switch: OFF
I
O
= 1 mA to 50 mA
T
A
= –30°C to +85°C
I
O
= 50 mA
2.50
2.57
2.70
R
ON
I
LEAK
V
LDO3a
V
DO
C
LDO3a
50
0.01
2.90
3.0
140
1
250
130
1
3.09
Ω
µA
V
mV
µF
µs
V
LDO3b
I
O
= 1 mA
T
A
= –30°C to +85°C
I
O
= 1 mA to 180 mA
T
A
= –30°C to +85°C
I
O
= 180 mA
f = 1 kHz
f = 100 Hz to 10 kHz
2.85
2.97
3.15
V
V
LDO4
C
LDO4
V
DO
V
NOISE
2.81
2.2
2.9
2.99
V
µF
mV
dB
µV
rms
µs
200
60
50
250
2.75
2.9
200
2.2
3.05
V
LDO5
V
DO
C
LDO5
V
LDO6a
C
LDO6a
V
DO
I
O
= 1 mA to 150 mA
T
A
= –30°C to +85°C
I
O
= 150 mA
V
mV
µF
I
O
= 1 mA to 150 mA
T
A
= –30°C to +85°C
I
O
= 150 mA
2.75
2.2
2.85
2.95
V
µF
mV
µs
200
250
REV. 0
–3–
ADP3502
LDO SPECIFICATIONS
(continued)
Parameter
BASEBAND CORE SUB-LDO (LDO6b)
Output Voltage
RF RX1 LDO (LDO7)
Output Voltage
Output Capacitor Required for Stability
Dropout Voltage
Ripple Rejection
Output Noise Voltage
Start-Up Time from Shutdown
RF TX LDO (LDO8)
Output Voltage
Output Capacitor Required for Stability
Dropout Voltage
Ripple Rejection
Output Noise Voltage
Start-Up Time from Shutdown
RF RX2 LDO (LDO9)
Output Voltage
Output Capacitor Required for Stability
Dropout Voltage
Ripple Rejection
Output Noise Voltage
Start-Up Time from Shutdown
RF OPTIONAL LDO (LDO10)
Output Voltage
Output Capacitor Required for Stability
Dropout Voltage
Ripple Rejection
Output Noise Voltage
Start-Up Time from Shutdown
OPTIONAL LDO (LDO11)
Output Voltage
Output Capacitor Required for Stability
Ripple Rejection
Output Noise Voltage
Start-Up Time from Shutdown
VOLTAGE DETECTOR FOR LDO1
AND LDO6
LDO1 Detect Voltage
LDO1 Release Voltage
LDO1 Hysteresis
LDO6 Detect Voltage
LDO6 Release Voltage
LDO6 Hysteresis
Symbol
V
LDO6b
Conditions
I
O
= 1 mA
T
A
= –30°C to +85°C
I
O
= 1 mA to 100 mA
T
A
= –30°C to +85°C
I
O
= 100 mA
f = 1 kHz
f = 100 Hz to 100 kHz
Min
2.70
Typ
2.80
Max
2.90
Unit
V
V
LDO7
C
LDO7
V
DO
V
NOISE
2.81
1.5
2.9
2.99
V
µF
mV
dB
µV
rms
µs
200
60
40
250
2.81
2.2
2.9
2.99
V
LDO8
C
LDO8
V
DO
V
NOISE
I
O
= 1 mA to 150 mA
T
A
= –30°C to +85°C
I
O
= 150 mA
f = 1 kHz
f = 100 Hz to 100 kHz
V
µF
mV
dB
µV
rms
µs
200
60
40
250
2.81
1
2.9
2.99
V
LDO9
C
LDO9
V
DO
V
NOISE
I
O
= 1 mA to 50 mA
T
A
= –30°C to +85°C
I
O
= 50 mA
f = 1 kHz
f = 100 Hz to 100 kHz
V
µF
mV
dB
µV
rms
µs
150
60
40
250
2.81
1
2.9
2.99
V
LDO10
C
LDO10
V
DO
V
NOISE
I
O
= 1 mA to 50 mA
T
A
= –30°C to +85°C
I
O
= 50 mA
f = 1 kHz
f = 100 Hz to 100 kHz
V
µF
mV
dB
µV
rms
µs
150
60
40
250
1.42
2.2
1.5
1.58
V
LDO11
C
LDO11
V
NOISE
I
O
= 1 mA to 100 mA
T
A
= –30°C to +85°C
f = 1 kHz
f = 100 Hz to 100 kHz
V
µF
dB
µV
rms
µs
60
50
250
V
DET1
V
DET1
V
HYS1
V
DET6
V
DET6
V
HYS6
T
A
= –30°C to +85°C
T
A
= –30°C to +85°C
T
A
= –30°C to +85°C
T
A
= –30°C to +85°C
T
A
= –30°C to +85°C
T
A
= –30°C to +85°C
2.7
35
2.50
45
2.72
2.77
52
2.58
2.67
90
V
LDO1–NOM
V
LDO6–NOM
V
V
mV
V
V
mV
–4–
REV. 0
ADP3502
BATTERY VOLTAGE DIVIDER: MVBAT
Parameter
MVBAT OUTPUT VOLTAGE
5-Bit Programmable
Symbol
V
MVBAT
(T
A
= –30 C to +85 C, C
VBAT
= 10 F MLCC, C
ADAPTER
= 1 F MLCC, unless
otherwise noted.)
Conditions
VBAT = 4.35 V, MVEN = 1
T
A
= 25°C
Code: 10000
Code: 01111
VBAT = 4.35 V, MVEN = 1
1
0 < I
OUT
< 100
µA
VBAT = 4.35 V, MVEN = 1
VBAT = 4.35 V, MVEN = 0
Min
Typ
Max
Unit
2.459
2.648
2.508 2.538
2.697 2.732
6
2
3
78
5
97
1
V
V
mV/LSB
mA
mV
µA
µA
MVBAT OUTPUT VOLTAGE
STEP
OUTPUT DRIVE CURRENT
CAPABILITY
MVBAT LOAD REGULATION
OPERATING BATTERY
CURRENT
SHUTDOWN CURRENT
V
STEP
I
OUT
MVBAT
BATTERY CHARGER
Parameter
(T
A
= –30 C to +85 C, C
VBAT
= 10 F MLCC, C
ADAPTER
= 1 F MLCC, 4.0 V
otherwise noted.)
Symbol
VBAT
SENSE
Conditions
T
A
= 25°C
V
R_SENSE
= 30 mV, CHI = 1
4.8 V
≤
ADAPTER
≤
12 V
Code: 00 (Default)
Code: 01
Code: 10
Code: 11
T
A
= –20°C to +55°C
V
R_SENSE
= 160 mV, CHI = 1
4.8 V
≤
ADAPTER
≤
12 V (Note 1)
Code: 00 (Default)
Code: 01
Code: 10
Code: 11
+25°C to +55°C or +25°C to –20°C
V
R_SENSE
= 30 mV, Constant Adapter
Voltage between 4.8 V and 12 V
ADAPTER-VBAT
ADAPTER-VBAT
I
ADAPTER
ADAPTER-V
ISNS
ADAPTER = 5 V, VBAT = 4.3 V
ADAPTER = 5 V
VBAT = 3.6 V
VBAT = 3.0 V
VBAT
≤
DDLO
DDLO
VBAT< DDLO, T
A
= 25°C,
(5 mA Precharge), VBAT Ramping Up
ADAPTER
Min
12 V, unless
Typ
Max
Unit
CHARGER CONTROL VOLTAGE
RANGE
2-Bit Programmable
3.440
4.175
4.195
4.215
3.500
4.205
4.225
4.245
3.560
4.235
4.255
4.275
V
V
V
V
CHARGER CONTROL VOLTAGE
RANGE
1
2-Bit Programmable
VBAT
SENSE
3.440
4.155
4.175
4.195
–20
3.500
4.205
4.225
4.245
3.560
4.255
4.275
4.295
+20
V
V
V
V
mV
CHARGER VOLTAGE
TEMPERATURE DRIFT
1
CHARGER DETECT ON
THRESHOLD
CHARGER DETECT OFF
THRESHOLD
CHARGER SUPPLY CURRENT
CURRENT LIMIT THRESHOLD
High Current Limit
(Full Charge Current Enabled)
Low Current Limit
(Full Charge Current Disabled)
PRECHARGE CURRENT SOURCE
BASE PIN DRIVE CURRENT
DEEP DISCHARGE LOCK-OUT
(Releasing Voltage)
DEEP DISCHARGE LOCK-OUT
HYSTERESIS
2
ISENSE BIAS CURRENT
I
ISNS
110
0
165
25
225
60
2
mV
mV
mA
mV
mV
mA
mA
V
170
40
3
20
210
60
5
35
255
75
7
2.650 2.80
100
V
ISNS
= 5 V
200
1
mV
µA
REV. 0
–5–
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