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MAX8572EUT

Description
High-Efficiency LCD Boost with True Shutdown
Categorysemiconductor    Analog mixed-signal IC   
File Size633KB,10 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Compare View All

MAX8572EUT Overview

High-Efficiency LCD Boost with True Shutdown

19-3329; Rev 1; 10/04
KIT
ATION
EVALU
BLE
AVAILA
High-Efficiency LCD Boost
with True Shutdown
General Description
Features
15V or Adjustable Output Voltage Up to 28V
Safety Features Protect Against Output Faults
20mA at 20V from a Single Li+ Battery
True Shutdown
87% Efficiency
Up to 800kHz Switching Frequency
Small 6-Pin SOT23 Package
MAX8570–MAX8575
The MAX8570 family of LCD step-up converters uses
an internal n-channel switch and an internal p-channel
output isolation switch. These converters operate from
a 2.7V to 5.5V supply voltage and deliver up to 28V at
the output.
A unique control scheme provides the highest efficien-
cy over a wide range of load conditions. The internal
MOSFET switch reduces external component count and
a high switching frequency (up to 800kHz) allows for
tiny surface-mount components. Three current-limit
options are available. The MAX8570 and MAX8572 use
a 110mA current limit to reduce ripple and component
size in low-current applications. For high-power require-
ments, the MAX8574 and MAX8575 use a 500mA cur-
rent limit and supply up to 20mA at 20V. The MAX8571
and MAX8573 use a 250mA current limit for a compro-
mise between ripple and power. Built-in safety features
protect the internal switch and down-stream compo-
nents from fault conditions.
Additional features include a low quiescent current and
a True Shutdown mode to save power. The MAX8570/
MAX8571/MAX8574 allow the user to set the output
voltage between 3V and 28V, and the MAX8572/
MAX8573/MAX8575 have a preset 15V output. These
step-up converters are ideal for small LCD panels with
low current requirements, but can also be used in other
applications. The MAX8571 evaluation kit is available to
help reduce design time.
Ordering Information
PART
MAX8570EUT-T
MAX8571EUT-T
MAX8572EUT-T
MAX8573EUT-T
MAX8574EUT-T
MAX8575EUT-T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
TOP
MARK
ABTJ
ABTK
ABTL
ABTM
ABTN
ABTO
Applications
LCD Bias Generators
Polymer LEDs (OLED)
Cellular or Cordless Phones
Palmtop Computers
Personal Digital Assistants (PDAs)
Organizers
Handy Terminals
PART
MAX8570EUT
MAX8571EUT
MAX8572EUT
MAX8573EUT
MAX8574EUT
MAX8575EUT
110mA
250mA
110mA
250mA
500mA
500mA
Selector Guide
CURRENT LIMIT
OUTPUT VOLTAGE
Adjustable
Adjustable
15V
15V
Adjustable
15V
Pin Configurations
TOP VIEW
Typical Operating Circuit
V
OUT
= V
CC
TO 28V
FB 1
GND 2
SHDN 3
6
V
CC
SW
LX
OUT 1
GND 2
SHDN 3
6
V
CC
SW
LX
SW
LX
MAX8570
MAX8571
MAX8574
5
4
MAX8572
MAX8573
MAX8575
5
4
V
CC
= 2.7V TO 5.5V
V
CC
MAX8572
MAX8573
MAX8575
OUT
SOT23-6
SOT23-6
ON
OFF
True Shutdown is a trademark of Maxim Integrated Products,
Inc.
SHDN
GND
________________________________________________________________
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.

MAX8572EUT Related Products

MAX8572EUT MAX8574EUT-T MAX8575EUT MAX8573EUT MAX8574EUT MAX8573EUT-T MAX8571EUT MAX8570EUT MAX8570-MAX8575
Description High-Efficiency LCD Boost with True Shutdown 0.6 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO6 0.6 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO6 0.6 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO6 0.6 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO6 0.6 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO6 0.6 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO6 0.6 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO6 0.6 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO6
Number of functions - 1 1 1 1 1 1 1 1
Number of terminals - 6 6 6 6 6 6 6 6
Maximum operating temperature - 85 °C 85 Cel 85 Cel 85 Cel 85 °C 85 Cel 85 Cel 85 Cel
Minimum operating temperature - -40 °C -40 Cel -40 Cel -40 Cel -40 °C -40 Cel -40 Cel -40 Cel
Maximum output current - 0.6 A 0.6000 A 0.6000 A 0.6000 A 0.6 A 0.6000 A 0.6000 A 0.6000 A
surface mount - YES Yes Yes Yes YES Yes Yes Yes
Switch configuration - BOOST BOOST BOOST BOOST BOOST BOOST BOOST BOOST
Maximum switching frequency - 800 kHz 800 kHz 800 kHz 800 kHz 800 kHz 800 kHz 800 kHz 800 kHz
Temperature level - INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal form - GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal location - DUAL pair pair pair DUAL pair pair pair
Rated input voltage - - 3.6 V 3.6 V 3.6 V - 3.6 V 3.6 V 3.6 V
Maximum limit input voltage - - 5.5 V 5.5 V 5.5 V - 5.5 V 5.5 V 5.5 V
Minimum limit input voltage - - 2.7 V 2.7 V 2.7 V - 2.7 V 2.7 V 2.7 V
Processing package description - - MO178AB, SOT-23, 6 PIN MO178AB, SOT-23, 6 PIN MO178AB, SOT-23, 6 PIN - MO178AB, SOT-23, 6 PIN MO178AB, SOT-23, 6 PIN MO178AB, SOT-23, 6 PIN
state - - ACTIVE ACTIVE ACTIVE - ACTIVE ACTIVE ACTIVE
Craftsmanship - - BICMOS BICMOS BICMOS - BICMOS BICMOS BICMOS
packaging shape - - Rectangle Rectangle Rectangle - Rectangle Rectangle Rectangle
Package Size - - SMALL OUTLINE, 低 PROFILE, SHRINK PITCH SMALL OUTLINE, 低 PROFILE, SHRINK PITCH SMALL OUTLINE, 低 PROFILE, SHRINK PITCH - SMALL OUTLINE, 低 PROFILE, SHRINK PITCH SMALL OUTLINE, 低 PROFILE, SHRINK PITCH SMALL OUTLINE, 低 PROFILE, SHRINK PITCH
Terminal spacing - - 0.9500 mm 0.9500 mm 0.9500 mm - 0.9500 mm 0.9500 mm 0.9500 mm
terminal coating - - tin lead tin lead tin lead - tin lead tin lead tin lead
Packaging Materials - - Plastic/Epoxy Plastic/Epoxy Plastic/Epoxy - Plastic/Epoxy Plastic/Epoxy Plastic/Epoxy
Analog IC other types - - switching regulator switching regulator switching regulator - switching regulator switching regulator switching regulator
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