19-1489; Rev 0; 12/00
GSM Cellular/PCN Handset RF Power
Management IC
MAX1727
General Description
The MAX1727 is a radio frequency (RF) power-man-
agement IC intended for Global Satellite Mobile (GSM)
communication cellular and personal cellular network
(PCN) handsets using a single lithium-ion (Li+) cell bat-
tery with inputs from +3.1V to +5.5V. The IC contains
four low-noise, low-dropout (LDO) linear regulators to
provide all the supply voltage requirements for the RF
portion of the handset, and two high-speed, wide-band-
width op amps for the power amplifier (PA) power con-
trol loop.
Each LDO has its own individual on/off control to maxi-
mize design flexibility. All LDOs are internally trimmed
to a fixed output voltage and are optimized for low
noise and high crosstalk isolation. LDO1 (R1OUT) is
rated for 100µA and is optimized for lowest quiescent
current. It is intended to power the transmitter, receiver,
and synthesizer. LDO2 (R2OUT) is rated for 50mA. It is
intended to power the TCXO, GSM, and PCN high-
power voltage-controlled oscillators (VCOs). LDO3
(R3OUT) is rated for 20mA and is optimized to sup-
press line transients. It is intended to power the UHF
offset VCO. LDO3 has an auxiliary 2.5Ω switched out-
put to allow the VCO to be powered up with precise
timing. LDO4 (R3BYP) is rated for 20mA. It is intended
to power this IC’s reference and LDO3 for superior line
rejection. LDO4 and the reference will be powered on if
any of the R1EN, R2EN, and R3EN enable inputs are
logic high.
The op amps have wide bandwidth, high DC accuracy,
high slew rate, and Rail-to-Rail
®
inputs and outputs.
The op amps can sink and source 3mA, and include
two 2.5Ω switched outputs. The op amps and switched
outputs may be used independently or may be config-
ured to provide optimized power for a PA control loop.
o
+3.1V to +5.5V Input Range
o
One 2.90V, 100mA Low IQ LDO
o
One 2.75V, 50mA Low IQ LDO
o
One 2.75V, 20mA Low IQ LDO
o
Low-Noise LDOs
<90µV
RMS
from 10Hz to 100kHz
>80dB Crosstalk Isolation at 10kHz
>70dB PSRR at 1kHz
o
±5% Accuracy Over Line, Load, and Temperature
o
Three 2.5Ω Switched Outputs
o
Current and Thermal Limit
o
Two Undedicated Op Amps
Rail-to-Rail CMR Inputs and Outputs
>120dB Channel Separation
>85dB PSRR at 1kHz
o
10µA (max) Shutdown Current
Features
Ordering Information
PART
MAX1727EUG
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
24 TSSOP
Pin Configuration
R3EN 1
PCEN 2
24 GND
23 CBYP
22 ENVCO
21 VCOOUT
20 R3OUT
MAX1727
19 R3BYP
18 R1OUT
17 V
CC
16 R2OUT
15 R2EN
14 R1EN
13 GSM/PCN
TSSOP
Applications
GSM Cellular or PCN Handsets
Single-Cell Li+ Systems
3-Cell NiMH, NiCD, or Alkaline Systems
PC1+ 3
PC1- 4
PC1OUT 5
V
PC
6
PC2OUT 7
PC2- 8
PC2+ 9
PCNAPC 10
Typical Application Circuit and Functional Diagram appear
at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
BANDSWIN 11
GSMAPC 12
________________________________________________________________
Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
GSM Cellular/PCN Handset RF Power
Management IC
MAX1727
ABSOLUTE MAXIMUM RATINGS
V
CC
, V
PC
to GND......................................................-0.3V to +7V
PC1-, PC1+, PC2-, PC2+ to GND ............................-0.3V to +7V
GSM/PCN, BANDSWIN to GND ...............................-0.3V to +7V
PC1OUT, PC2OUT to GND ......................................-0.3V to +7V
R1OUT, R2OUT, R3BYP to GND................-0.3V to (V
CC
+ 0.3V)
R3OUT, CBYP to GND ..........................-0.3V to (V
R3BYP
+ 0.3V)
R1EN, R2EN, R3EN, ENVCO,
PCEN to GND ..........................................-0.3V to (V
CC
+ 0.3V)
VCOOUT to GND ..................................-0.3V to (V
R3OUT
+ 0.3V)
GSMAPC, PCNAPC to GND ...........-0.3V to (V
BANDSWIN
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
24-Pin TSSOP (derate 12.2mW/°C above +70°C) ......975mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature(soldering, 10s) ..................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.1V to +5.5V, V
PC
= +2.8V to +5.5V, GND = 0, C
BYP
= 0.01µF,
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values
are at T
A
= +25°C.)
PARAMETER
V
CC
Operating Voltage
V
PC
Operating Voltage
UVLO Falling
UVLO Rising
SUPPLY CURRENT
Supply Current in Shutdown
V
CC
+ V
PC
Supply Current
REFERENCE
Reference Bypass Output
REF Supply Rejection
REGULATOR R1
R1OUT Output Voltage
Dropout Voltage
Load Regulation
Line Regulation
R1OUT Leakage Current
REGULATOR R2
R2OUT Output Voltage
Dropout Voltage
Load Regulation
Line Regulation
R2OUT Leakage Current
REGULATOR R3
R3OUT Output Voltage
Dropout Voltage
0.1mA
≤
I
R3OUT
≤
20mA
I
R3OUT
= 1mA
I
R3OUT
= 20mA
2.61
2.75
1
45
100
2.90
V
mV
0.1mA
≤
I
R2OUT
≤
50mA
I
R2OUT
= 1mA
I
R2OUT
= 50mA
0.1mA
≤
I
R2OUT
≤
50mA
+3.1V
≤
V
CC
≤
+5.5V, I
R2OUT
= 10mA
R2EN, R2OUT = 0, V
CC
= +5.5V
2.61
2.75
1
100
8
0.5
225
45
10
2
mV
mV
µA
2.90
V
mV
0.1mA
≤
I
R1OUT
≤
100mA
I
R1OUT
= 1mA
I
R1OUT
= 100mA
0.1mA
≤
I
R1OUT
≤
100mA
+3.1V
≤
V
CC
≤
+5.5V, I
R1OUT
= 10mA
R1EN, R1OUT = 0, V
CC
= +5.5V
2.80
2.90
1
100
8
0.5
225
45
10
2
3.00
V
mV
mV
mV
µA
I
CBYP
= 0, do not draw current from this pin
+3.1V
≤
V
CC
≤
+5.5V
1.225
1.250
0.2
1.275
5
V
mV
All regulators and op amps off, V
CC
= +3.6V
All regulators and op amps on, V
CC
= V
PC
0.01
1.80
10
3.0
µA
mA
V
CC
falling
V
CC
rising
CONDITIONS
MIN
3.1
2.8
2.3
2.4
2.5
2.62
TYP
MAX
5.5
5.5
UNITS
V
V
V
V
2
_______________________________________________________________________________________
GSM Cellular/PCN Handset RF Power
Management IC
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3.1V to +5.5V, V
PC
= +2.8V to +5.5V, GND = 0, C
BYP
= 0.01µF,
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values
are at T
A
= +25°C.)
PARAMETER
Load Regulation
Line Regulation
R3OUT Leakage Current
VCOOUT SWITCH (R3 SWITCH)
On-Resistance
REGULATOR R4 (R3BYP)
R3BYP Output Voltage
Dropout Voltage
Load Regulation
Line Regulation
R3BYP Leakage Current
Input Offset Voltage
Input Bias Current
Input Bias Current
Shutdown Mode
Input Offset Current
Input Common-Mode Range
Gain-Bandwidth Product
Slew Rate
PSRR
CMRR
Output Voltage Swing
On-Resistance GSMAPC
On-Resistance PCNAPC
Input Low Level
Input High Level
Logic Input Current
Threshold Rising
Hysteresis
I
OUT
= 1mA
0 < V
IN
< +5.5V
150
20
THERMAL SHUTDOWN (R3 SWITCH)
°C
°C
2.0
1
10Hz
≤
f
≤
1kHz
10Hz
≤
f
≤
1kHz
I
LOAD
=
±3
mA
0.3V < V
GSMAPC
< V
PC
- 0.3V, I
LOAD
=
±3
mA
0.3V < V
PCNAPC
< V
PC
- 0.3V, I
LOAD
=
±3
mA
0.2
2.2
2.2
R
LOAD
= 1kΩ connected to V
PC
/2, C
LOAD
= 100pF to
GND
0.3
4
1
85
80
2.62
5
5
0.4
V
CM
= +0.3V to (V
PC
- 0.3V)
V
CM
= 0 to V
CC
,
V
PC
= 0, PCEN = GND
2.4
0.1mA
≤
I
R3BYP
≤
20mA
I
R3BYP
= 1mA
I
R3BYP
= 20mA
0.1mA
≤
I
R3BYP
≤
20mA
+3.1V
≤
V
CC
≤
+5.5V, I
R3BYP
= 10mA
R1EN, R2EN, R3EN = 0, R3BYP = 0, V
CC
= +5.5V
2.85
2.95
1
45
10
0.7
100
45
10
2
2
150
5
30
V
PC
-
0.3
5.1
3.05
Ω
V
mV
mV
mV
µA
mV
nA
µA
nA
V
MHz
V/µs
dB
dB
V
Ω
Ω
V
V
µA
CONDITIONS
0.1mA
≤
I
R3OUT
≤
20mA
+3.1V
≤
V
CC
≤
+5.5V, I
R3OUT
= 10mA
R3EN, R3OUT = 0, V
CC
= +5.5V
MIN
TYP
5
0.2
MAX
45
10
2
UNITS
mV
mV
µA
MAX1727
PA CONTROL OP AMPS (PC1, PC2)
BAND SWITCH (GSMAPC, PCNAPC)
LOGIC AND CONTROL INPUTS (R1EN, R2EN, R3EN, ENVCO, GSM/PCN, PCEN)
_______________________________________________________________________________________
3
GSM Cellular/PCN Handset RF Power
Management IC
MAX1727
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.1V to +5.5V, V
PC
= +2.8V to +5.5V, GND = 0, C
BYP
= 0.01µF,
T
A
= -40°C to +85°C,
unless otherwise noted.) (Note 1)
PARAMETER
V
CC
Operating Voltage
V
PC
Operating Voltage
UVLO Falling
UVLO Rising
SUPPLY CURRENT
Supply Current in Shutdown
V
CC
Supply Current
REFERENCE
Reference Bypass Output
REF Supply Rejection
REGULATOR R1
R1OUT Output Voltage
Dropout Voltage
Load Regulation
Line Regulation
R1OUT Leakage Current
REGULATOR R2
R2OUT Output Voltage
Dropout Voltage
Load Regulation
Line Regulation
R2OUT Leakage Current
REGULATOR R3
R3OUT Output Voltage
Dropout Voltage
Load Regulation
Line Regulation
R3OUT Leakage Current
VCOOUT SWITCH (R3 SWITCH)
On-Resistance
REGULATOR R4 (R3BYP)
R3BYP Output Voltage
Dropout Voltage
Load Regulation
Line Regulation
R3BYP Leakage Current
0.1mA
≤
I
R3BYP
≤
20mA
I
R3BYP
= 20mA
0.1mA
≤
I
R3BYP
≤
20mA
+3.1V
≤
V
CC
≤
+5.5V, I
R3BYP
= 10mA
R1EN, R2EN, R3EN = 0, R3BYP = 0, V
CC
= +5.5V
2.85
3.05
100
45
10
2
V
mV
mV
mV
µA
5.1
Ω
0.1mA
≤
I
R3OUT
≤
20mA
I
R3OUT
= 20mA
0.1mA
≤
I
R3OUT
≤
20mA
+3.1V
≤
V
CC
≤
+5.5V, I
R3OUT
= 10mA
R3EN, R3OUT = 0, V
CC
= +5.5V
2.61
2.90
100
45
10
2
V
mV
mV
mV
µA
0.1mA
≤
I
R2OUT
≤
50mA
I
R2OUT
= 50mA
0.1mA
≤
I
R2OUT
≤
50mA
+3.1V
≤
V
CC
≤
+5.5V, I
R2OUT
= 10mA
R2EN, R2OUT = 0, V
CC
= +5.5V
2.61
2.90
225
45
10
2
V
mV
mV
mV
µA
0.1mA
≤
I
R1OUT
≤
100mA
I
R1OUT
= 100mA
0.1mA
≤
I
R1OUT
≤
100mA
+3.1V
≤
V
CC
≤
+5.5V, I
R1OUT
= 10mA
R1EN, R1OUT = 0, V
CC
= +5.5V
2.80
3.00
225
45
10
2
V
mV
mV
mV
µA
I
CBYP
= 0, do not draw current from this pin
+3.1V
≤
V
CC
≤
+5.5V
1.219
1.281
5
V
mV
All regulators and op amps off, V
CC
= +3.6V
All regulators and op amps on
10
3.0
µA
mA
V
CC
falling
V
CC
rising
CONDITIONS
MIN
3.1
2.8
2.3
2.62
MAX
5.5
5.5
UNITS
V
V
V
V
4
_______________________________________________________________________________________
GSM Cellular/PCN Handset RF Power
Management IC
MAX1727
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3.1V to +5.5V, V
PC
= +2.8V to +5.5V, GND = 0, C
BYP
= 0.01µF,
T
A
= -40°C to +85°C,
unless otherwise noted.) (Note 1)
PARAMETER
PA CONTROL OP AMPS (PC1, PC2)
Input Offset Voltage
Input Bias Current
Input Bias Current
Shutdown Mode
Input Offset Current
Input Common-Mode Range
Output Voltage Swing
On-Resistance GSMAPC
On-Resistance PCNAPC
Input Low Level
Input High Level
Logic Input Current
0 < V
IN
< +5.5V
2.0
1
I
LOAD
=
±3
mA
0.3V < V
GSMAPC
< V
PC
- 0.3V, I
LOAD
=
±3
mA
0.3V < V
PCNAPC
< V
PC
- 0.3V, I
LOAD
=
±3
mA
0.3
0.2
V
CM
= 0.3V to (V
PC
- 0.3V)
V
CM
= 0 to V
CC
,
V
PC
= 0, PCEN = GND
2
150
5
30
V
PC
- 0.3
2.62
5
5
0.4
nA
µA
nA
V
V
Ω
Ω
V
V
µA
CONDITIONS
MIN
TYP
MAX
UNITS
BAND SWITCH (GSMAPC, PCNAPC)
LOGIC AND CONTROL INPUTS (R1EN, R2EN, R3EN, ENVCO, GSM/PCN, PCEN)
Note 1:
Specifications to -40°C are guaranteed by design, not production tested.
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
GROUND CURRENT
vs. SUPPLY VOLTAGE
FULL LOAD*
1.2
GROUND CURRENT (mA)
1.0
0.8
0.6
0.4
0.2
0
0
1
2
*ALL REGULATORS ON
3
4
5
NO LOAD*
MAX1727 toc01
GROUND CURRENT
vs. LOAD CURRENT
MAX1727 toc02
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX1727 toc03
1.4
1.135
1.130
GROUND CURRENT (mA)
1.125
1.120
1.115
1.110
1.105
1.100
0
20
40
60
LOAD CURRENT (mA)
V
CC
= +3.6V
80
LDO3
LDO1
2.95
2.90
OUTPUT VOLTAGE (V)
LDO1
2.85
2.80
2.75
2.70
2.65
2.7
3.2
3.7
4.2
4.7
5.2
SUPPLY VOLTAGE (V)
LDO2
LDO3
LDO2
100
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________
5
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