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MAX1589EZT180+T

P1-P3P4-P6P7-P9P10-P12
General Description
The MAX1589 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 MAX1589 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 Telephones
Personal Digital Assistants (PDAs)
Hand-Held Computers
Digital Still Cameras
PCMCIA Cards
CD and MP3 Players
Features
♦ Low 1.62V Minimum Input Voltage
♦ Guaranteed 500mA Output Current
♦ ±0.5% Initial Accuracy
♦ Low 175mV Dropout at 500mA Load
♦ 70ms RESET Output Flag
♦ Supply Current Independent of Load and Dropout
Voltage
♦ Logic-Controlled Shutdown
♦ Thermal-Overload and Short-Circuit Protection
♦ Preset Output Voltages (0.75V, 1.0V, 1.2V, 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)
MAX1589
Low-Input-Voltage, 500mA LDO Regulator
with
RREESSEETT
in SOT and TDFN
________________________________________________________________ Maxim Integrated Products 1
GND
OUTIN
TOP VIEW
MAX1589
SHDN
GND
THIN SOT23
I.C.
RESET
RESET
1
2
3
6
5
4
4
5
6
SHDN
IN
3
2
1
I.C.
OUT
TDFN
3mm x 3mm
MAX1589
Pin Configurations
ON
OFF
INPUT
1.62V TO 3.6V
IN
SHDN
GND
RESET
OUT
OUTPUT
0.75V TO 3.0V
500mA
TO μC
LOGIC
SUPPLY
100kΩ
MAX1589
C
IN
1μF
C
OUT
4.7μF
Typical Operating Circuit
19-3048; Rev 2; 10/07
*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.
Selector Guide
TOP MARK
V
OUT
(V)
SUFFIX
SOT TDFN
0.75 075 AAAT AFJ
1.00 100 AAAU AFK
1.20 120 — ATM
1.30 130 AAAV AFL
1.50 150 AAAW AFM
1.80 180 AAAX AFN
2.50 250 AAAY AFO
3.00 300 AAAZ AFP
Ordering Information
PART*
TEMP RANGE
PIN-PACKAGE
MAX1589EZT_ _ _-T -40°C to +85°C
6 Thin SOT23-6
MAX1589ETT_ _ _
-40°C to +85°C
6 TDFN
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
MAX1589
Low-Input-Voltage, 500mA LDO Regulator
with
RREESSEETT
in SOT and 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.
IN, SHDN, RESET to GND .....................................-0.3V to +4.0V
OUT to GND ................................................-0.3V to (V
IN
+ 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (T
A
= +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
(V
IN
= (V
OUT
+ 0.5V) or V
IN
= 1.8V, whichever is greater; SHDN = IN, C
IN
= 1µF, C
OUT
= 4.7µF, T
A
= -40°C to +85°C, unless other-
wise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Input Voltage V
IN
1.62 3.60
V
Input Undervoltage Lockout V
UVLO
V
IN
rising (180mV typical hysteresis)
1.30 1.60
V
I
OUT
= 150mA, T
A
= +25°C
-0.5 +0.5
Output Voltage Accuracy
I
OUT
= 1mA to 500mA,
V
IN
= (V
OUT
+ 0.5V) to +3.6V
-1.5 +1.5
%
Maximum Output Current I
OUT
Continuous
500
mA
RMS
Current Limit I
LIM
V
OUT
= 96% of nominal value
550 850 1150
mA
No load 70
140
I
OUT
= 500mA 90
Ground Current I
Q
Dropout (Note 2) 70
µA
Dropout Voltage
V
IN
- V
OUT
I
OUT
= 500mA, V
OUT
≥ 1.8V (Note 2)
175 350
mV
Load Regulation ΔV
LDR
I
OUT
= 1mA to 500mA
0.02 0.5
%
Line Regulation ΔV
LNR
V
IN
= (V
OUT
+ 0.5V) to +3.6V, I
OUT
= 100mA -0.15 +0.01 +0.15
% / V
Output Noise 10Hz to 100kHz, I
OUT
= 10mA 86
µV
RMS
PSRR f < 1kHz, I
OUT
= 10mA 70 dB
SHUTDOWN
T
A
= +25°C
0.001
1
Shutdown Supply Current I
OFF
SHDN = GND
T
A
= +85°C
0.01
µA
V
IH
V
IN
= 1.62V to 3.6V
1.4
SHDN Input Logic Levels
V
IL
V
IN
= 1.62V to 3.6V
0.6
V
T
A
= +25°C 1
300
SHDN Input Bias Current I
SHDN
V
S H DN
= 0 or 3.6V
T
A
= +85°C 5
nA
Turn-On Delay From SHDN high to OUT high, V
OUT
= 1.5V 90 µs
RESET OUTPUT
Reset Threshold Accuracy V
OUT
falling (1.7% typical hysteresis) 80
82.5
85
%V
OUT
I
RESET
= 100µA
1.5 100
RESET Output Low Voltage V
OL
V
IN
= +1.0V, I
RESET
= 100µA 3
100
mV
MAX1589
Low-Input-Voltage, 500mA LDO Regulator
with
RREESSEETT
in SOT and TDFN
_______________________________________________________________________________________ 3
Note 1: Limits are 100% production tested at T
A
= +25°C. Limits over the operating temperature range are guaranteed by design.
Note 2: The dropout voltage is defined as V
IN
- V
OUT
, when V
OUT
is 4% lower than the value of V
OUT
when V
IN
= V
OUT
+ 0.5V.
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= (V
OUT
+ 0.5V) or V
IN
= 1.8V, whichever is greater; SHDN = IN, C
IN
= 1µF, C
OUT
= 4.7µF, T
A
= -40°C to +85°C, unless other-
wise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
T
A
= +25°C
0.001
1
RESET Output High
Leakage Current
I
OH
V
RESET
= 3.6V,
RESET not asserted
T
A
= +85°C
0.01
µA
Reset Delay t
RP
From V
OUT
high to RESET rising 70
100 160
ms
THERMAL PROTECTION
Thermal-Shutdown Temperature T
SHDN
+165
°C
Thermal-Shutdown Hysteresis
ΔT
SHDN
15 °C
OUTPUT VOLTAGE ACCURACY
vs. LOAD CURRENT
MAX1589 toc01
LOAD CURRENT (mA)
OUTPUT VOLTAGE ACCURACY (%)
400300200100
-0.1
0
0.1
0.2
-0.2
0 500
V
OUT
= +3.0V
V
OUT
= +1.5V
V
OUT
= +0.75V
OUTPUT VOLTAGE ACCURACY
vs. TEMPERATURE
MAX1589 toc03
TEMPERATURE (
°
C)
OUTPUT VOLTAGE ACCURACY (%)
603510-15
-1.0
-0.5
0
0.5
1.0
1.5
-1.5
-40 85
V
OUT
= +1.5V
I
OUT
= 0mA, 100mA, 500mA
120
60
0.01 0.1 1 10 100 1000
GROUND-PIN CURRENT
vs. LOAD CURRENT
MAX1589 toc04
LOAD CURRENT (mA)
GROUND-PIN CURRENT (μA)
100
110
70
80
90
V
OUT
= +3.0V
V
OUT
= +1.5V
V
OUT
= +0.75V
GROUND-PIN CURRENT
vs. TEMPERATURE
MAX1589 toc06
TEMPERATURE (°C)
GROUND-PIN CURRENT (
μ
A)
603510-15
60
70
80
90
100
50
-40 85
V
OUT
= +1.5V
I
OUT
= 1mA TO 500mA
I
OUT
= 0mA
Typical Operating Characteristics
(V
IN
= (V
OUT
+ 0.5V) or 1.8V, whichever is greater; SHDN = IN, C
IN
= 1µF, C
OUT
= 4.7µF, T
A
= +25°C, unless otherwise noted.)
P1-P3P4-P6P7-P9P10-P12

MAX1589EZT180+T

Mfr. #:
Buy MAX1589EZT180+T
Manufacturer:
Maxim Integrated
Description:
IC REG LIN 1.8V 500MA TSOT23-6
Lifecycle:
New from this manufacturer.
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