General Description
The MAX8559 dual, low-noise, low-dropout (LDO) linear
regulator operates from a 2.5V to 6.5V input voltage
and delivers at least 300mA of continuous output cur-
rent. It offers low output noise and low dropout of only
60mV at 100mA. Typical output noise for this device is
32µVRMS, and PSRR is 70dB at 10kHz. Designed with
an internal P-channel MOSFET pass transistor, the
MAX8559 maintains a low 115µA supply current per
LDO, independent of the load current and dropout volt-
age. Other features include short-circuit protection and
thermal-shutdown protection. The MAX8559 includes
two independent logic-controlled shutdown inputs and
is capable of operating without a bypass capacitor to
further reduce total solution size. The MAX8559 is avail-
able in a miniature 8-bump UCSP™ (2mm x 1mm) or
8-pin TDFN (3mm x 3mm) package.
Applications
Cellular and Cordless Phones
PDAs and Palmtop Computers
Notebook Computers
Digital Cameras
PCMCIA Cards
Wireless LAN Cards
Handheld Instruments
Features
♦Two Low-Dropout-Voltage Regulators
♦Low 32µVRMS Output Noise
♦300mA Output Current for Each LDO
♦70dB PSRR at 10kHz
♦Independent Shutdown Controls
♦Low 60mV Dropout at 100mA Load
♦115µA Operating Supply Current per LDO
♦1.5V to 3.3V Factory-Preset Output
♦Small Ceramic Output Capacitors
♦Output Current Limit
♦Thermal-Overload and Short-Circuit Protection
♦1.95W Power-Dissipation Capability (TDFN)
♦2mm2Footprint (UCSP)
MAX8559
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
ON
OFF
ON
OFF
MAX8559
INPUT
2.5V TO 6.5V
2.2μF
min INB
SHDNA
SHDNB
INA
GND
OUTB
OUTA
BP 0.01μF
(OPTIONAL)
2.2μF/150mA
4.7μF/300mA
1.5V TO 3.3V
2.2μF/150mA
4.7μF/300mA
1.5V TO 3.3V
Typical Operating Circuit
19-3121; Rev 2; 8/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
PART TEMP RANGE PIN-PACKAGE
MAX8559EBAxy*-T
-40°C to +85°C 8 UCSP (B8-1)
MAX8559EBAxy*+T
-40°C to +85°C 8 UCSP (B8-1)
MAX8559ETAxy*-T
-40°C to +85°C 8 TDFN-EP**
MAX8559ETAxy*+T
-40°C to +85°C 8 TDFN-EP**
*xy = Output voltage code (see the Output Voltage
Selector Guide).
**EP = Exposed pad.
+Denotes lead-free package.
Output Voltage Selector Guide appears at end of data sheet.
Pin Configurations
GND
OUTB
INB
2
OUTA
BP
SHDNA
SHDNB
INA
TDFN
3mm x 3mm
34
MAX8559ETA
876
5
TOP VIEW
A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.
Pin Configurations continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
MAX8559
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
INA, INB, SHDNA, SHDNB, BP to GND ...................-0.3V to +7V
INA to INB..............................................................-0.3V to +0.3V
OUTA, OUTB to GND ..................................-0.3V to (VIN + 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (TA= +70°C)
8-Bump UCSP (derate 4.7mW/°C above +70°C)..........379mW
8-Pin TDFN (derate 24.4mW/°C above +70°C) ..........1951mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
8-Pin TDFN Lead Temperature (soldering, 10s)..............+300°C
8-Bump UCSP Solder Profile...........................................(Note 1)
ELECTRICAL CHARACTERISTICS
(VIN = 3.8V, SHDNA = SHDNB = IN_, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
UNITS
Input Voltage VIN 2.5 6.5 V
Undervoltage-Lockout Threshold
VUVLO VIN rising, hysteresis is 40mV (typ)
2.15 2.35 2.45
V
TA = +25°C, IOUTA = IOUTB = 1mA -1 +1
TA = -40°C to +85°C, IOUTA = IOUTB = 1mA
-2 +2
Output Voltage Accuracy
TA = -40°C to +85°C, IOUTA or IOUTB =
0.1mA to 300mA -3 +3
%
Maximum Output Current IOUT_
300
mA
Output Current Limit ILIM_
310 550
920 mA
No load
180
290
No load, one LDO shutdown
115
Ground Current IQ
IOUTA = IOUTB = 100mA
220
µA
IOUT_ = 1mA 0.6
Dropout Voltage
(Note 2)
VOUT_ -
VIN_ IOUT_ = 100mA 60 120 mV
Line Regulation ΔVLNR
VIN_ = (VOUT_ + 0.1V) to 6.5V, IOUT_ = 1mA -0.15
0
+0.15
%/ V
100Hz to 100kHz, COUT_ = 10µF,
IOUT_ = 1mA, CBP = 0.01µF 32
Output Voltage Noise
100Hz to 100kHz, COUT_ = 10µF,
IOUT_ = 1mA, CBP = not installed
254
µVRMS
10kHz 70
Power-Supply Ripple Rejection PSRR
VIN_ = VOUT_ + 1V,
CBP = 0.01µF,
COUT_ = 2.2µF,
IOUT_ = 50mA 100kHz 54
dB
SHUTDOWN
TA = +25°C
0.01
1
Shutdown Supply Current ISHDN SHDN_ = 0V TA = -40°C to +85°C 0.1 µA
VIH Input high voltage 1.6
SHDN Input Threshold VIL Input low voltage 0.4 V
Note 1: For UCSP solder profile information, please refer to the application note APP_1891 on the Maxim website, www.maxim-ic.com.
MAX8559
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 3.8V, SHDNA = SHDNB = IN_, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
UNITS
TA = +25°C 10 100
SHDN Input Bias Current ISHDN SHDN_ = IN or
GND TA = -40°C to +85°C
100
nA
VOUT_ Discharge Resistance in
Shutdown SHDN_ = GND
385
Ω
THERMAL PROTECTION
Thermal-Shutdown Temperature
TSHDN TJ rising
+160
°C
Thermal-Shutdown Hysteresis
ΔTSHDN
10 °C
Note 1: All units are 100% production tested at TA= +25°C. Limits over the operating temperature range are guaranteed by design.
Note 2: The dropout voltage is defined as VIN - VOUT when VOUT is 100mV below the nominal value of VOUT. Specification only
applies when VOUT ≥2.5V.
Typical Operating Characteristics
(VOUTA = VOUTB = 2.85V, VINA = VINB = 3.8V, COUT = 2.2µF (or 4.7µF for 300mA), CBP = 0.01µF, and CIN = 2.2µF (or 4.7µF for
300mA), unless otherwise noted.)
0
100
50
200
150
250
300
03412 56
GROUND CURRENT
vs. SUPPLY VOLTAGE
MAX8559 toc01
SUPPLY VOLTAGE (V)
GROUND CURRENT (μA)
100mA LOAD, BOTH OUTPUTS
NO LOAD, BOTH OUTPUTS
0
50
25
125
100
75
200
175
150
225
0 10050 150 200 250 300
GROUND CURRENT
vs. LOAD CURRENT
MAX8559 toc02
LOAD CURRENT (mA)
GROUND CURRENT (μA)
BOTH OUTPUTS LOADED
0
75
50
25
100
125
150
175
200
225
250
-40 10-15 35 60 85
GROUND CURRENT
vs. TEMPERATURE
MAX8559 toc03
TEMPERATURE (°C)
GROUND CURRENT (μA)
100mA LOAD, BOTH OUTPUTS
NO LOAD, BOTH OUTPUTS
MAX8559
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
4 _______________________________________________________________________________________
0
60
40
20
80
100
120
140
160
180
200
0 10050 150 200 300
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX8559 toc04
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
250
-0.7
-0.5
-0.6
-0.3
-0.4
-0.1
-0.2
0
0 100 15050 200 250 300
OUTPUT VOLTAGE ACCURACY
vs. LOAD CURRENT
MAX8559 toc05
LOAD CURRENT (mA)
OUTPUT VOLTAGE ACCURACY (%)
-0.6
-0.3
-0.4
-0.5
-0.2
-0.1
0
0.1
0.2
0.3
0.4
-40 10-15 35 60 85
OUTPUT VOLTAGE ACCURACY
vs. TEMPERATURE
MAX8559 toc06
TEMPERATURE (°C)
OUTPUT VOLTAGE ACCURACY (%)
100mA LOAD, BOTH OUTPUTS
100mA LOAD, BOTH OUTPUTS
PSRR vs. FREQUENCY
MAX8559 toc07
FREQUENCY (kHz)
PSRR (dB)
100100.1 1
10
20
30
40
50
60
70
80
0
0.01 1000
IOUTA = 50mA
CHANNEL-TO-CHANNEL ISOLATION
vs. FREQUENCY
MAX8559 toc08
FREQUENCY (kHz)
CHANNEL-TO-CHANNEL ISOLATION (dB)
1001010.1
10
20
30
40
50
60
70
80
90
100
0
0.01 1000
IOUTA = 10mA
OUTPUT-NOISE SPECTRAL DENSITY
vs. FREQUENCY
MAX8559 toc09
FREQUENCY (kHz)
NOISE DENSITY (nV/√Hz)
1010.1
100
1000
10,000
10
0.01 100
RLOAD = 100Ω
Typical Operating Characteristics (continued)
(VOUTA = VOUTB = 2.85V, VINA = VINB = 3.8V, COUT = 2.2µF (or 4.7µF for 300mA), CBP = 0.01µF, and CIN = 2.2µF (or 4.7µF for
300mA), unless otherwise noted.)
40μs/div
LINE TRANSIENT
VOUTA 10mV/div
AC-COUPLED
MAX8559 toc11
VINA
4.5V
3.5V
1V/div
IOUTA = 100mA
10μs/div
LOAD TRANSIENT
IOUTA
100mA/div
MAX8559 toc12
VOUTA 20mV/div
AC-COUPLED
0
MAX8559
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
_______________________________________________________________________________________ 5
10μs/div
LOAD TRANSIENT
NEAR DROPOUT
IOUTA
100mA/div
MAX8559 toc13
VOUTA 20mV/div
AC-COUPLED
0
1ms/div
SHUTDOWN RESPONSE
VSHDNA
1V/div
MAX8559 toc14
VOUTA
1V/div
0
0
Typical Operating Characteristics (continued)
(VOUTA = VOUTB = 2.85V, VINA = VINB = 3.8V, COUT = 2.2µF (or 4.7µF for 300mA), CBP = 0.01µF, and CIN = 2.2µF (or 4.7µF for
300mA), unless otherwise noted.)
1ms/div
OUTPUT NOISE
(10Hz to 100kHz)
VOUT_ 500μV/div
MAX8559 toc10
MAX8559
Detailed Description
The MAX8559 is a dual, low-noise, low-dropout, low-qui-
escent-current linear regulator designed primarily for
battery-powered applications. The regulators are avail-
able with preset 1.5V to 3.3V output voltages. These out-
puts can supply loads up to 300mA with a 4.7µF output
capacitor, or up to 150mA with a 2.2µF output capacitor.
As illustrated in the Functional Diagram, the MAX8559
consists of a 1.25V reference, error amplifiers, P-chan-
nel pass transistors, internal feedback voltage-dividers,
and autodischarge circuitry.
Feedback Control Loop
The 1.25V bandgap reference is connected to the error
amplifier’s inverting input. The error amplifier compares
this reference with the feedback voltage and amplifies
the difference. If the feedback voltage is lower than the
reference voltage, the pass-transistor gate is pulled
lower, allowing more current to pass to the output and
increasing the output voltage. If the feedback voltage is
too high, the pass-transistor gate is pulled up, allowing
less current to pass to the output. The output voltage is
fed back through an internal resistor voltage-divider
connected to OUT_.
Internal P-Channel Pass Transistor
The MAX8559 features two 0.6ΩP-channel MOSFET
pass transistors. A P-channel MOSFET provides sever-
al advantages over similar designs using PNP pass
transistors, including longer battery life. It requires no
base drive, reducing quiescent current considerably.
PNP-based regulators waste considerable current in
dropout when the pass transistor saturates, and they
also use high base-drive currents under large loads.
The MAX8559 does not suffer from these problems,
and with both outputs on it only consumes 180µA of
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
6 _______________________________________________________________________________________
Pin Description
PIN
TDFN
UCSP
NAME FUNCTION
1 A1 INA LDO A Regulator Input. Connect to INB. Input voltage can range from 2.5V to 6.5V. Bypass INA
with a ceramic capacitor to GND (see the Capacitor Selection and Regulator Stability section).
2A2
SHDNA
Shutdown A Input. A logic-low on SHDNA shuts down regulator A. If SHDNA and SHDNB are both
low, both regulators and the internal reference are off and the supply current is reduced to 10nA
(typ). If either SHDNA or SHDNB is a logic high, the internal reference is on. Connect SHDNA to
INA for always-on operation of regulator A.
3A3
SHDNB
Shutdown B Input. A logic-low on SHDNB shuts down regulator B. If SHDNA and SHDNB are both
low, both regulators and the internal reference are off and the supply current is reduced to 10nA
(typ). If either SHDNA or SHDNB is a logic high, the internal reference is on. Connect SHDNB to
INB for always-on operation of regulator B.
4 A4 INB LDO B Regulator Input. Connect to INA. Input voltage can range from 2.5V to 6.5V. Bypass INB
with a ceramic capacitor to GND (see the Capacitor Selection and Regulator Stability section).
5 B4 OUTB
Regulator B Output. OUTB can source up to 300mA continuous current. Bypass OUTB with a
ceramic capacitor to GND (see the Capacitor Selection and Regulator Stability section). During
shutdown, OUTB is internally discharged to GND through a 385Ω resistor.
6 B3 GND Ground
7B2BP
Reference Noise Bypass. Bypass BP with a low-leakage 0.01µF ceramic capacitor for reduced
noise at both outputs.
8 B1 OUTA
Regulator A Output. OUTA can source up to 300mA continuous current. Bypass OUTA with a
ceramic capacitor to GND (see the Capacitor Selection and Regulator Stability section). During
shutdown, OUTB is internally discharged to GND through a 385Ω resistor.
EP — Exposed
Paddle
Connect to ground plane. EP also functions as a heatsink. Solder to the circuit-board ground
plane to maximize thermal dissipation.
quiescent current at no load and 220µA with 100mA
load current on both outputs (see the Typical Operating
Characteristics). A PNP-based regulator has a high
dropout voltage that is independent of the load. A P-
channel MOSFET’s dropout voltage is proportional to
load current, providing for low dropout voltage at heavy
loads and extremely low dropout at lighter loads.
Current Limit
The MAX8559 contains two independent current lim-
iters, one for each regulator output, monitoring and
controlling the pass transistor’s gate voltage and limit-
ing the output current to 310mA (min). The outputs can
be shorted to ground continuously without damaging
the part.
Low-Noise Operation
An external 0.01µF bypass capacitor at BP in conjunc-
tion with an internal resistor creates a lowpass filter.
The MAX8559 exhibits less than 32µVRMS of output
voltage noise with CBP = 0.01µF and COUT = 10µF. The
Typical Operating Characteristics show a graph of
Output-Noise Spectral Density with these values. If out-
put noise is not critical, the BP capacitor can be
removed to reduce total solution size and cost.
Shutdown
The MAX8559 has independent shutdown control
inputs (SHDNA and SHDNB). Drive SHDNA low to shut
down OUTA. Drive SHNDB low to shut down OUTB.
Drive both SHDNA and SHDNB low to shut down the
entire chip, reducing supply current to 0.01µA. Connect
SHDNA or SHDNB to a logic high or IN_ for always-on
operation of the corresponding LDO. Each LDO output
is internally discharged to ground through a 385Ω
resistor in shutdown mode.
Thermal-Overload Protection
Thermal-overload protection limits total power dissipa-
tion in the MAX8559. Each regulator has its own inde-
pendent thermal detector. When one of the regulators’
junction temperature exceeds TJ= +160°C, that regu-
lator’s pass transistor is turned off allowing the IC to
cool. The thermal sensor turns the pass transistor on
again after the IC’s junction temperature cools by 10°C.
This results in a pulsed output during continuous ther-
mal-overload conditions.
Operating Region and Power Dissipation
The MAX8559 maximum power dissipation depends on
the thermal resistance of the case and the circuit board,
the temperature difference between the die junction and
ambient air, and the rate of airflow. The power dissipa-
tion across the device is P = IOUT x (VIN - VOUT).
The maximum power dissipation allowed is:
PMAX = (TJ- TA) / (RθJB + RθBA)
where TJ- TAis the temperature difference between
the MAX8559 die junction and the surrounding air,
RθJB (RθJC) is the thermal resistance of the package,
and RθBA is the thermal resistance through the printed
circuit board, copper traces, and other materials to the
surrounding air.
The exposed paddle of the TDFN package performs
the function of channeling heat away. Connect the
exposed paddle to the board ground plane.
Applications Information
Capacitor Selection and
Regulator Stability
For load currents up to 150mA, use a single 2.2µF
capacitor to bypass both inputs of the MAX8559 and a
2.2µF capacitor to bypass each output. Larger input-
capacitor values and lower ESRs provide better supply-
noise rejection and line-transient response. To reduce
output noise and improve load-transient voltage dips,
use larger output capacitors up to 10µF. For stable oper-
ation over the full temperature range with load currents
up to 300mA, input and output capacitors should be a
minimum of 4.7µF.
Note that some ceramic dielectrics exhibit large capaci-
tance and ESR variation with temperature. With
dielectrics such as Z5U and Y5V, it may be necessary to
use 4.7µF or more for up to 150mA load current to
ensure stability at temperatures below -10°C. With X7R
or X5R dielectrics, 2.2µF is sufficient at all operating tem-
peratures. These regulators are optimized for ceramic
capacitors. Tantalum capacitors are not recommended.
Use a 0.01µF bypass capacitor at BP for low-output volt-
age noise. Increasing the capacitance slightly decreas-
es the output noise, but increases the startup time.
PSRR and Operation from Sources Other
than Batteries
The MAX8559 is designed to deliver low-dropout volt-
ages and low quiescent currents in battery-powered
systems. Power-supply rejection ratio is 70dB at 10kHz
(see Power-Supply Rejection Ratio vs. Frequency in
the Typical Operating Characteristics). When operat-
ing from sources other than batteries, improved sup-
ply-noise rejection and transient response is achieved
by increasing the values of the input and output
bypass capacitors and through passive RC or CRC fil-
tering techniques.
MAX8559
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
_______________________________________________________________________________________ 7
MAX8559
Load-Transient Considerations
The MAX8559 load-transient response graphs (see the
Typical Operating Characteristics) show two compo-
nents of the output response: a DC shift in the output
voltage due to the different load currents and the tran-
sient response. Typical overshoot for step changes in
the load current from 10µA to 100mA is 15mV. Increase
the output capacitor’s value and decrease its ESR to
attenuate transient spikes.
Dropout Voltage
A regulator’s minimum input-output voltage differential
(or dropout voltage) determines the lowest usable sup-
ply voltage. In battery-powered systems, this determines
the useful end-of-life battery voltage. Because the
MAX8559 uses an internal P-channel MOSFET pass
transistor, its dropout voltage is a function of the drain-
to-source on-resistance (RDS(ON)) multiplied by the load
current (see the Typical Operating Characteristics).
Calculating the Maximum Output Power
in UCSP
The maximum output power of the MAX8559 is limited
by the maximum power dissipation of the package. By
calculating the power dissipation of the package as a
function of the input voltage, output voltages, and out-
put currents, the maximum input voltage can be
obtained. The maximum power dissipation should not
exceed the package’s maximum power rating.
P = (VIN(MAX) - VOUTA) x IOUTA
+ (VIN(MAX) - VOUTB) x IOUTB
where:
VIN(MAX) = maximum input voltage
PMAX = maximum power dissipation of the package
(379mW for the UCSP and 1951mW for the TDFN)
VOUTA = output voltage of OUTA
VOUTB = output voltage of OUTB
IOUTA = maximum output current of OUTA
IOUTB = maximum output current of OUTB
P should be less than PMAX. If P is greater than PMAX,
consider the TDFN.
Layout Guidelines
Due to the low output noise and tight output voltage
accuracy required by most applications, careful PC
board layout is required. An evaluation kit
(MAX8559EVKIT) is available to speed design.
Follow these guidelines for good PC board layout:
• Keep the input and output paths short and wide if
possible, especially at the ground terminals.
• Use thick copper PC boards (2oz vs. 1oz) to
enhance thermal capabilities.
• Place output, input, and bypass capacitors as close
as possible to the IC.
• Ensure traces to BP and the BP capacitor are away
from noisy sources to ensure low output voltage noise.
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
8 _______________________________________________________________________________________
MAX8559
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
_______________________________________________________________________________________ 9
INA
SHDNA
SHDNB
SHUTDOWN
AND POWER-ON
CONTROL
THERMAL
SENSOR
1.25V
REF
GND
INB
LDOB OUTB
BP
OUTA
LDOA
SHDNA
P
MOS DRIVER
WITH ILIMIT
ERROR
AMP
MAX8559
Functional Diagram
MAX8559
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
10 ______________________________________________________________________________________
Output Voltage Selector Guide
PART
VOUTA(x)
VOUTB (y)
TOP MARK
MAX8559EBA8A 1.50 3.30 AAE
MAX8559EBA2G 1.80 3.00 AAF
MAX8559EBA11 1.85 1.85 AAK
MAX8559EBAP2 2.50 1.80 AAG
MAX8559EBAK2 2.80 1.80 AAH
MAX8559EBAJJ 2.85 2.85 AAC
MAX8559EBAJG 2.85 3.00 AAI
MAX8559EBAII 2.90 2.90 AAB
MAX8559EBAG2 3.00 1.80 AAJ
MAX8559EBAGJ
3.00 2.85 AAD
MAX8559EBAGG
3.00 3.00 AAA
MAX8559EBAAA
3.30 3.30 AAL
MAX8559ETA88 1.50 1.50 AOL
MAX8559ETA8A 1.50 3.30 AIM
MAX8559ETA22 1.80 1.80 API
MAX8559ETA2G 1.80 3.00 ALK
MAX8559ETA11 1.85 1.85 AOV
MAX8559ETAP2 2.50 1.80 ALL
MAX8559ETAO1
2.60 1.85 APJ
MAX8559ETAK2 2.80 1.80 ALM
MAX8559ETAKG
2.80 3.00 AIN
MAX8559ETAJ2 2.85 1.80 ALD
MAX8559ETAJJ 2.85 2.85 AIG
MAX8559ETAJG 2.85 3.00 ALN
MAX8559ETAII 2.90 2.90 AIF
MAX8559ETAG2 3.00 1.80 ALO
MAX8559ETAGG
3.00 3.00 AIE
MAX8559ETAAO
3.30 2.60 APK
MAX8559ETAAJ 3.30 2.85 AOM
MAX8559ETAAA
3.30 3.30 APD
Pin Configurations (continued)
TOP VIEW
UCSP
(2.06mm x 1.03mm)
MAX8559EBA
GND
OUTB INB
OUTA
BP SHDNA
SHDNB
INA
A1 A2 A3 A4
B1 B2 B3 B4
A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.
Chip Information
TRANSISTOR COUNT: 634
PROCESS: BiCMOS
Note: Standard output voltage options, shown in bold, are
available. Contact the factory for other output voltages between
1.5V and 3.3V. Minimum order quantity is 15,000 units.
MAX8559
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
______________________________________________________________________________________ 11
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
UCSP 4x2.EPS
A11
21-0156
PACKAGE OUTLINE, 4x2 UCSP
MAX8559
Dual, 300mA, Low-Noise Linear Regulator
with Independent Shutdown in UCSP or TDFN
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.
6, 8, &10L, DFN THIN.EPS
L
CL
C
PIN 1
INDEX
AREA
D
E
L
e
L
A
e
E2
N
G
12
21-0137
PACKAGE OUTLINE, 6,8,10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
-DRAWING NOT TO SCALE-
k
e
[(N/2)-1] x e
REF.
PIN 1 ID
0.35x0.35
DETAIL A
b
D2
A2
A1
COMMON DIMENSIONS
SYMBOL MIN. MAX.
A0.70 0.80
D2.90 3.10
E2.90 3.10
A1 0.00 0.05
L0.20 0.40
PKG. CODE ND2 E2 eJEDEC SPEC b[(N/2)-1] x e
PACKAGE VARIATIONS
0.25 MIN.k
A2 0.20 REF.
2.30±0.101.50±0.106T633-1 0.95 BSC MO229 / WEEA 1.90 REF0.40±0.05
1.95 REF0.30±0.05
0.65 BSC
2.30±0.108T833-1
2.00 REF0.25±0.05
0.50 BSC
2.30±0.1010T1033-1
2.40 REF0.20±0.05- - - -
0.40 BSC
1.70±0.10 2.30±0.1014T1433-1
1.50±0.10
1.50±0.10
MO229 / WEEC
MO229 / WEED-3
0.40 BSC - - - - 0.20±0.05 2.40 REFT1433-2 14 2.30±0.101.70±0.10
T633-2 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF
T833-2 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF
T833-3 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF
-DRAWING NOT TO SCALE-
G
22
21-0137
PACKAGE OUTLINE, 6,8,10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
DOWNBONDS
ALLOWED
NO
NO
NO
NO
YES
NO
YES
NO
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
ENGLISH • ???? • ??? • ???
WHAT'S NEW
PRODUCTS
SOLUTIONS
DESIGN
APPNOTES
SUPPORT
BUY
COMPANY
MEMBERS
MAX8559
Part Number Table
Notes:
See the MAX8559 QuickView Data Sheet for further information on this product family or download the
MAX8559 full data sheet (PDF, 244kB).
1.
Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.2.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within
one business day.
3.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: See full
data sheet or Part Naming Conventions.
4.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product
uses.
5.
Part Number
Free
Sample
Buy
Direct
Package:
TYPE PINS SIZE
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free?
Materials Analysis
MAX8559ETAG2-T
-40C to +85C
RoHS/Lead-Free: No
MAX8559ETAG2
-40C to +85C
RoHS/Lead-Free: No
MAX8559ETA22+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAJ2+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAJ2+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAGG+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAGG+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAO1+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAO1+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAM1+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAM1+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAJJ+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAJ2-T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833-2*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
MAX8559ETAAA+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETA8A+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETA22+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAKG-T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833-2*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
MAX8559ETAJJ-T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833-2*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
MAX8559ETAGG-T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833-2*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
MAX8559ETAGG
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833-2*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
MAX8559ETAG2+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAG2+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETA8A+T
-40C to +85C
RoHS/Lead-Free: Yes
MAX8559ETA8A-T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833-2*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
MAX8559ETAJJ+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAJ1+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAJ1+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAAA+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAJG+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAJG+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETA11+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETA11+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETA18+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETA88+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETA88+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAAG+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETADK+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETADK+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAAK+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAAK+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAAJ+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETA18+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAAG+T
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAAJ+
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833+2*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559ETAJJ
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833-2*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
MAX8559ETA8A
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833-2*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
MAX8559ETAKG
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833-2*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
MAX8559ETAJ2
THIN QFN (Dual);8 pin;3X3X0.8mm
Dwg: 21-0137I (PDF)
Use pkgcode/variation: T833-2*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
MAX8559EBAAA+T
UC SP;8 pin;
Dwg: 21-0156A (PDF)
Use pkgcode/variation: B8+1*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559EBAAA+
UC SP;8 pin;
Dwg: 21-0156A (PDF)
Use pkgcode/variation: B8+1*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559EBAJJ+T
UC SP;8 pin;
Dwg: 21-0156A (PDF)
Use pkgcode/variation: B8+1*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559EBAGJ
UC SP;8 pin;
Dwg: 21-0156A (PDF)
Use pkgcode/variation: B8-1*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
MAX8559EBAJJ+
UC SP;8 pin;
Dwg: 21-0156A (PDF)
Use pkgcode/variation: B8+1*
-40C to +85C
RoHS/Lead-Free: Yes
Materials Analysis
MAX8559EBAGJ-T
UC SP;8 pin;
Dwg: 21-0156A (PDF)
Use pkgcode/variation: B8-1*
-40C to +85C
RoHS/Lead-Free: No
Materials Analysis
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