MAX1589AETT250+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX1589AETT250+T ,Low-Input-Voltage, 500mA LDO Regulator with Active-Low RESET in SOT and TDFNApplications+Denotes lead-free packaging.Notebook ComputersSelector GuideCellular and PCS PhonesMAX ..
MAX1589ETT100+T ,Low-Input-Voltage, 500mA LDO Regulator with Active-Low RESET in SOT and TDFNELECTRICAL CHARACTERISTICS(V = (V + 0.5V) or V = 1.8V, whichever is greater; SHDN = IN, C = 1µF, C ..
MAX1589ETT150+ ,Low-Input-Voltage, 500mA LDO Regulator with Active-Low RESET in SOT and TDFNMAX158919-3048; Rev 0; 10/03Low-Input-Voltage, 500mA LDO RegulatorR RE ES SE ET Twith in SOT and TD ..
MAX1589ETT180+ ,Low-Input-Voltage, 500mA LDO Regulator with Active-Low RESET in SOT and TDFNApplicationsother output voltages.Selector GuideNotebook ComputersCellular and PCS TelephonesMAX158 ..
MAX1589ETT180+T ,Low-Input-Voltage, 500mA LDO Regulator with Active-Low RESET in SOT and TDFNApplicationsother output voltages.Selector GuideNotebook ComputersCellular and PCS TelephonesMAX158 ..
MAX1589ETT250+ ,Low-Input-Voltage, 500mA LDO Regulator with Active-Low RESET in SOT and TDFNFeatures Low 1.62V Minimum Input VoltageThe MAX1589 low-dropout linear regulator operatesfrom a +1 ..
MAX4254ESD ,Quad, single-supply operation +2.4V to 5.5V, low-noise, low-distortion, Rail-to-Rail op amp. Gain bandwidth 3MHz, min stable gain 1V/V.General Description ________
MAX4255EUK-T ,Single, single-supply operation +2.4V to 5.5V, low-noise, low-distortion, Rail-to-Rail op amp. Gain bandwidth 22MHz, min stable gain 10V/V.Applications' 400pF Capacitive-Load Handling CapabilityPortable/Battery-Powered Equipment' Availabl ..
MAX4256ESA ,Single, single-supply operation +2.4V to 5.5V, low-noise, low-distortion, Rail-to-Rail op amp. Gain bandwidth 22MHz, min stable gain 10V/V, with shutdown.Applications' 400pF Capacitive-Load Handling CapabilityPortable/Battery-Powered Equipment' Availabl ..
MAX4256ESA ,Single, single-supply operation +2.4V to 5.5V, low-noise, low-distortion, Rail-to-Rail op amp. Gain bandwidth 22MHz, min stable gain 10V/V, with shutdown.Features' Low Input Voltage Noise Density: 7.9nV/√HzThe MAX4249–MAX4257 low-noise, low-distortion o ..
MAX4257ESA ,Quad, single-supply operation +2.4V to 5.5V, low-noise, low-distortion, Rail-to-Rail op amp. Gain bandwidth 22MHz, min stable gain 10V/V.ELECTRICAL CHARACTERISTICS(V = +5V, V = 0V, V = 0V, V = V /2, R tied to V /2, SHDN = V or open, T = ..
MAX4257ESA+ ,UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Ampsapplications that require low distortion and/or low noise.LoadFor additional power conservation, th ..

MAX1589AETT250+T
Low-Input-Voltage, 500mA LDO Regulator with Active-Low RESET in SOT and TDFN
General Description
The MAX1589A low-dropout linear regulator operates
from a +1.62V to +3.6V supply and delivers a guaran-
teed 500mA continuous load current with a low 175mV
dropout. The high-accuracy (±0.5%) output voltage is
preset to internally trimmed voltages from +0.75V to
+3.0V. An active-low, open-drain reset output remains
asserted for at least 70ms after the output voltage reach-
es regulation. This device is offered in 6-pin thin SOT23
and 6-pin, 3mm x 3mm thin DFN packages.
An internal pMOS pass transistor maintains low supply
current, independent of load and dropout voltage, making
the MAX1589A ideal for portable battery-powered equip-
ment such as personal digital assistants (PDAs), digital
still cameras, cell phones, cordless phones, and note-
book computers. Other features include logic-controlled
shutdown, short-circuit protection, and thermal-overload
protection.
Applications
Notebook Computers
Cellular and PCS Phones
Personal Digital Assistants (PDAs)
Handheld Computers
Digital Still Cameras
PCMCIA Cards
CD and MP3 Players
FeaturesLow 1.62V Minimum Input VoltageGuaranteed 500mA Output Current±0.5% InitialAccuracyLow 175mV Dropout at 500mA Load70ms RESETOutput FlagSupply Current Independent of Load and Dropout
VoltageLogic-Controlled ShutdownThermal-Overload and Short-Circuit ProtectionPreset Output Voltages (0.75V, 1.0V, 1.3V, 1.5V,
1.8V, 2.5V, and 3.0V)Tiny 6-Pin Thin SOT23 Package (<1.1mm High)Thin 6-Pin TDFN Package (<0.8mm High)
MAX1589A
Low-Input-Voltage, 500mA LDO Regulator
with RREESSEETTin SOT and TDFN
GND
OUTIN
TOP VIEW
MAX1589A
SHDN
GND
THIN SOT23
I.C.
RESET
RESET56
SHDN21
I.C.
OUT
TDFN
3mm x 3mm
MAX1589A
Pin Configurations
OFF
INPUT
1.62V TO 3.6V
SHDN
GND
RESET
OUT
OUTPUT
0.75V TO 3.0V500mA
TO μC
LOGIC
SUPPLY
100kΩ
MAX1589A
CIN
1μF
COUT
4.7μF
Typical Operating Circuit
19-3664; Rev 0; 4/05
*Insert the desired three-digit suffix (see the Selector Guide) into
the blanks to complete the part number. Contact the factory for
other output voltages.
+Denotes lead-free packaging.
Selector Guide
MAX1589A
TOP MARKVOUT
(V)SUFFIX
SOTTDFN
0.75075AACCALG
1.00100AACDALH
1.30130AACEALI
1.50150AACFALJ
1.80180AACGALK
2.50250AACHALF
3.00300AACIALL
Ordering Information
PART*TEMP RANGEPIN-PACKAGE
MAX1589AEZT_ _ _+T-40°C to +85°C6 Thin SOT23-6
MAX1589AETT_ _ _ +-40°C to +85°C6 TDFN
MAX1589A
Low-Input-Voltage, 500mA LDO Regulator
with RREESSEETTin SOT and TDFN
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.
IN, SHDN, RESETto GND.....................................-0.3V to +4.0V
OUT to GND................................................-0.3V to (VIN+ 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (TA= +70°C)
6-Pin Thin SOT23 (derate 9.1mW/°C above +70°C)....727mW
6-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
Lead Temperature (soldering, 10s).................................+300°C
ELECTRICAL CHARACTERISTICS
(VIN= (VOUT+ 0.5V) or 1.8V, whichever is greater; SHDN= IN, CIN= 1µF, COUT= 4.7µF, TA= -40°C to +85°C, unless otherwise
noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Input VoltageVIN1.623.60V
Input Undervoltage LockoutVUVLOVIN rising (180mV typical hysteresis)1.301.60V
IOUT = 150mA, TA = +25°C-0.5+0.5
Output Voltage AccuracyIOUT = 1mA to 500mA,
VIN = (VOUT + 0.5V) to +3.6V-1.5+1.5%
Maximum Output CurrentIOUTContinuous500mARMS
Current LimitILIMVOUT = 96% of nominal value5508501150mA
No load70140
IOUT = 500mA90Ground CurrentIQ
Dropout (Note 2)70
Dropout VoltageVIN - VOUTIOUT = 500mA, VOUT ≥ 1.8V (Note 2)175350mV
Load RegulationΔVLDRIOUT = 1mA to 500mA0.020.5%
Line RegulationΔVLNRVIN = (VOUT + 0.5V) to +3.6V, IOUT = 100mA-0.15+0.01+0.15% / V
Output Noise10Hz to 100kHz, IOUT = 10mA86µVRMS
PSRRf < 1kHz, IOUT = 10mA70dB
SHUTDOWN
TA = +25°C0.0011Shutdown Supply CurrentIOFFSHDN = GNDTA = +85°C0.01µA
VIHVIN = 1.62V to 3.6V1.4SHDN Input Logic LevelsVILVIN = 1.62V to 3.6V0.6V
TA = +25°C1300SHDN Input Bias CurrentI SHDNV SHDN = 0V or 3.6VTA = +85°C5nA
Turn-On DelayFrom SHDN high to OUT high, VOUT = 1.5V90µs
RESET OUTPUT
Reset Threshold AccuracyVOUT falling (1.7% typical hysteresis)8082.585%VOUTRESET = 100µA1.5100RESET Output Low VoltageVOLVIN = +1.0V, I RESET = 100µA3100mV
MAX1589A
Low-Input-Voltage, 500mA LDO Regulator
with RREESSEETTin SOT and TDFN
Note 1:Limits 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 VOUTis 4% lower than the value of VOUTwhen VIN= VOUT+ 0.5V.
ELECTRICAL CHARACTERISTICS (continued)
(VIN= (VOUT+ 0.5V) or 1.8V, whichever is greater; SHDN= IN, CIN= 1µF, COUT= 4.7µF, TA= -40°C to +85°C, unless otherwise
noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
TA = +25°C0.0011RESET Output High
Leakage CurrentIOHV RESET = 3.6V,
RESET not assertedTA = +85°C0.01µA
Reset DelaytRPFrom VOUT high to RESET rising70100160ms
THERMAL PROTECTION
Thermal-Shutdown TemperatureT SHDN+165°C
Thermal-Shutdown HysteresisΔT SHDN15°C
OUTPUT VOLTAGE ACCURACY
vs. LOAD CURRENT
MAX1589A toc01
LOAD CURRENT (mA)
OUTPUT VOLTAGE ACCURACY (%)
VOUT = +3.0V
VOUT = +1.5V
VOUT = +0.75V
OUTPUT VOLTAGE ACCURACY
vs. INPUT VOLTAGE
MAX1589A toc02
INPUT VOLTAGE (V)
OUTPUT VOLTAGE ACCURACY (%)
VOUT = +1.5V
IOUT = 0mA
IOUT = 100mA
IOUT = 500mA
OUTPUT VOLTAGE ACCURACY
vs. TEMPERATURE
MAX1589A toc03
TEMPERATURE (°C)
OUTPUT VOLTAGE ACCURACY (%)3510-15
VOUT = +1.5V
IOUT = 0mA, 100mA, 500mA
GROUND-PIN CURRENT
vs. LOAD CURRENT
MAX1589A toc04
LOAD CURRENT (mA)
GROUND-PIN CURRENT (
VOUT = +3.0V
VOUT = +1.5V
VOUT = +0.75V
GROUND-PIN CURRENT
vs. INPUT VOLTAGE
MAX1589A toc05
INPUT VOLTAGE (V)
GROUND-PIN CURRENT (
IOUT = 0mA
IOUT = 500mA
IOUT = 100mA
VOUT = +1.5V
GROUND-PIN CURRENT
vs. TEMPERATURE
MAX1589A toc06
TEMPERATURE (°C)
GROUND-PIN CURRENT (3510-15
VOUT = +1.5V
IOUT = 1mA TO 500mA
IOUT = 0mA
Typical Operating Characteristics
(VIN= (VOUT+ 0.5V) or 1.8V, whichever is greater; SHDN= IN, CIN= 1µF, COUT= 4.7µF, TA= +25°C, unless otherwise noted.)
MAX1589A
Low-Input-Voltage, 500mA LDO Regulator
with RREESSEETTin SOT and TDFN
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX1589A toc07
LOAD CURRENT (mA)
DROPOUT
(mV)
VOUT = +1.8V
VOUT = +3.0V
Typical Operating Characteristics (continued)
(VIN= (VOUT+ 0.5V) or 1.8V, whichever is greater; SHDN= IN, CIN= 1µF, COUT= 4.7µF, TA= +25°C, unless otherwise noted.)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
FREQUENCY (kHz)
PSRR (dB)
IOUT = 10mA
VOUT = +3.0V
VOUT = +1.5V
VOUT = +0.75V
MAX1589A toc08
LINE-TRANSIENT RESPONSE
MAX1589A toc09
40μs/div
3.5V
1.5V
10mV/div
AC-COUPLED
500mV/div
VOUT
VIN
ILOAD = 100mA
VOUT = 1.5V
LINE-TRANSIENT RESPONSE
NEAR DROPOUT
MAX1589A toc10
40μs/div
1.8V
2.5V
1.5V
10mV/div
AC-COUPLED
500mV/div
VOUT
VIN
ILOAD = 100mA
VOUT = 1.5V
LOAD-TRANSIENT RESPONSE
MAX1589A toc12
20μs/div
100mA
500mA
50mV/div
AC-COUPLED
500mA/div
VOUT
IOUT
VIN = 3.6V
VOUT = 1.5V
LOAD-TRANSIENT RESPONSE
MAX1589A toc11
20μs/div
20mA
200mA
20mV/div
AC-COUPLED
200mA/div
VOUT
IOUT
VIN = 1.8V
VOUT = 1.5V
MAX1589A
Low-Input-Voltage, 500mA LDO Regulator
with RREESSEETTin SOT and TDFN
SHUTDOWN RESPONSE
MAX1589A toc13
100μs/div
500mV/div
1V/div
VOUT
VSHDN
RL = 25Ω
VOUT = 1.5V
Typical Operating Characteristics (continued)
(VIN= (VOUT+ 0.5V) or 1.8V, whichever is greater; SHDN= IN, CIN= 1µF, COUT= 4.7µF, TA= +25°C, unless otherwise noted.)
SHUTDOWN/RESET RESPONSE
MAX1589A toc14
40ms/div
1V/div
1V/div
1V/div
VRESET
VOUT
VSHDN
RL = 25Ω
VOUT = 1.5V
LINE/RESET RESPONSE
MAX1589A toc15
200ms/div
2V/div
1V/div
1V/divVRESET
VOUT
VIN
RL = 25Ω
VOUT = 1.5V
MAX1589A
Detailed Description
The MAX1589A is a low-dropout, low-quiescent-current,
high-accuracy linear regulator designed primarily for
battery-powered applications. The device supplies
loads up to 500mA and is available with preset output
voltages from +0.75V to +3.0V. As illustrated in Figure 1,
the MAX1589A contains a reference, an error amplifier,
a p-channel pass transistor, an internal feedback volt-
age-divider, and a power-good comparator.
The error amplifier compares the 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.
Internal p-Channel Pass Transistor
The MAX1589A features a 0.33Ω(RDS(ON)) p-channel
MOSFET pass transistor. Unlike similar designs using
pnp pass transistors, p-channel MOSFETs require no
base drive, which reduces quiescent current. pnp-
based regulators also waste considerable current in
dropout when the pass transistor saturates and use
high base-drive currents under large loads. The
MAX1589A does not suffer from these problems and
consumes only 90µA (typ) of quiescent current under
heavy loads, as well as in dropout.
Shutdown
Pull SHDNlow to enter shutdown. During shutdown, the
output is disconnected from the input, an internal 1.5kΩ
resistor pulls OUT to GND, RESETis actively pulled
low, and supply current drops below 1µA.REESSEETTOutput
The MAX1589A’s microprocessor (µP) supervisory cir-
cuitry asserts a guaranteed logic-low reset during
power-up, power-down, and brownout conditions down
to +1V. RESETasserts when VOUTis below the reset
threshold and remains asserted for at least 70ms (tRP)
after VOUTrises above the reset threshold.
Current Limit
The MAX1589A monitors and controls the pass transis-
tor’s gate voltage, limiting the output current to 850mA
(typ). If the output current exceeds ILIM, the MAX1589A
output voltage drops.
Thermal-Overload Protection
Thermal-overload protection limits total power dissipa-
tion in the MAX1589A. When the junction temperature
exceeds +165°C, a thermal sensor turns off the pass
Low-Input-Voltage, 500mA LDO Regulator
with RREESSEETTin SOT and TDFN
PIN
SOT23TDFN
NAMEFUNCTIONIN
Regulator Input. Supply voltage can range from +1.62V to +3.6V. Bypass IN with at least a
1µF ceramic capacitor to GND (see the Capacitor Selection and Regulator Stability
section).—GNDGround. GND also functions as a heatsink. Solder GND to a large pad or circuit-board
ground plane to maximize SOT23 power dissipation.4GNDGroundSHDNActive-Low Shutdown Input. A logic-low reduces supply current to below 1µA. Connect to
IN or logic-high for normal operation.RESET
Active-Low, Open-Drain Reset Output. RESET rises 100ms after the output has achieved
regulation. RESET falls immediately if VOUT drops below 82.5% of its nominal voltage, or if
the MAX1589A is shut down.2I.C.Internally Connected. Leave floating or connect to GND.1OUTRegulator Output. Sources up to 500mA. Bypass with a 4.7µF low-ESR ceramic capacitor
to GND.Exposed
PadEPGround. EP also functions as a heatsink. Solder EP to a large pad or circuit-board ground
plane to maximize TDFN power dissipation.
Pin Description

Partno	Mfg	Dc	Qty	Available	Descript
MAX1589AETT250+T \|MAX1589AETT250T	MAXIM	N/a	1000	avai	Low-Input-Voltage, 500mA LDO Regulator with Active-Low RESET in SOT and TDFN