MAX1589AETT250-T Datasheet, PDF (1/12 Pages) Maxim Integrated Products – Low-Input-Voltage, 500mA LDO Regulator with RESET in SOT and TDFN

19-3664; Rev 0; 4/05
Low-Input-Voltage, 500mA LDO Regulator
with 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
Typical Operating Circuit
INPUT
1.62V TO 3.6V
IN
C_IN
1µF
OUT
MAX1589A
ON
OFF
SHDN
RESET
GND
OUTPUT
500mA 0.75V TO 3.0V
C_OUT
4.7µF
LOGIC
SUPPLY
100kΩ
TO µC
Features
o Low 1.62V Minimum Input Voltage
o Guaranteed 500mA Output Current
o ±0.5% Initial Accuracy
o Low 175mV Dropout at 500mA Load
o 70ms RESET Output Flag
o Supply Current Independent of Load and Dropout
Voltage
o Logic-Controlled Shutdown
o Thermal-Overload and Short-Circuit Protection
o Preset Output Voltages (0.75V, 1.0V, 1.3V, 1.5V,
1.8V, 2.5V, and 3.0V)
o Tiny 6-Pin Thin SOT23 Package (<1.1mm High)
o Thin 6-Pin TDFN Package (<0.8mm High)
Ordering Information
PART*
TEMP RANGE PIN-PACKAGE
MAX1589AEZT_ _ _+T -40°C to +85°C 6 Thin SOT23-6
MAX1589AETT_ _ _ + -40°C to +85°C 6 TDFN
*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
V_OUT
(V)
0.75
1.00
1.30
1.50
1.80
2.50
3.00
SUFFIX
075
100
130
150
180
250
300
MAX1589A
TOP MARK
SOT
AACC
AACD
AACE
AACF
AACG
AACH
AACI
TDFN
ALG
ALH
ALI
ALJ
ALK
ALF
ALL
Pin Configurations
TOP VIEW
IN 1
6 OUT
6 54
GND 2
MAX1589A
5 I.C.
MAX1589A
SHDN 3
4 RESET
123
THIN SOT23
TDFN
3mm x 3mm
________________________________________________________________ Maxim Integrated Products 1
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.