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MAX8543EEE

Description
Switching Controllers Step-Down Controller
CategoryPower/power management    The power supply circuit   
File Size431KB,27 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX8543EEE Overview

Switching Controllers Step-Down Controller

MAX8543EEE Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeSSOP
package instruction0.150 INCH, 0.250 INCH PITCH, MO-137AB, QSOP-16
Contacts16
Reach Compliance Codenot_compliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage13.2 V
Minimum input voltage3 V
Nominal input voltage13.2 V
JESD-30 codeR-PDSO-G16
JESD-609 codee0
length4.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Encapsulate equivalent codeSSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)245
Certification statusNot Qualified
Maximum seat height1.75 mm
surface mountYES
Switch configurationPUSH-PULL
Maximum switching frequency1200 kHz
technologyBICMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.635 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3.9 mm
19-3155; Rev 0; 5/04
Step-Down Controllers with Prebias Startup,
Lossless Sensing, Synchronization, and OVP
General Description
The MAX8543/MAX8544 current-mode, constant-fre-
quency PWM buck controllers operate from a 3V to
13.2V input supply and generate adjustable 0.8V to 0.9
x V
IN
output voltages at loads up to 25A. They feature
adjustable switching frequency and synchronization for
noise-sensitive applications.
The MAX8543/MAX8544 can start with (or without) a pre-
existing bias on the output, without discharging the out-
put. This feature simplifies tracking supply designs for
core and I/O applications and redundant supply designs.
The MAX8543/MAX8544 use the DC resistance of the
output inductor as the current-sense element for loss-
less, low-cost current sensing. The current-sense
threshold can be set to four discrete levels to accom-
modate inductors with different DC resistance values.
The MAX8544 features a power-OK monitor and two
MAX8544 controllers that can operate at 180° out-of-
phase for dual-output applications.
Prebias Startup/Monotonic
1% Output Accuracy
Ceramic, Polymer, or Electrolytic Capacitors
200kHz to 1MHz Adjustable Frequency
160kHz to 1.2MHz Synchronization
Lossless, Foldback Current Limit
Overvoltage Protection
Enable (On/Off)
Adjustable Soft-Start
MAX8544
Latch-Off/Autorecovery
Power-OK Monitor
Out-of-Phase Clock Output
Features
MAX8543/MAX8544
Applications
Base Stations
Networks and Telecom
Storage
Servers
PART
MAX8543EEE
MAX8544EEP
Ordering Information
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 QSOP
20 QSOP
Pin Configurations appear at end of data sheet.
Typical Operating Circuit
INPUT 3V TO 13.2V
V
IN
= 3V
TO 5.5V
VL
ON
OFF
EN
FSYNC
OPTIONAL
SYNCHRONIZATION
SS
IN
BST
DH
LX
OUTPUT
0.8V TO 0.9 x V
IN
UP TO 25A
MAX8543
COMP
ILIM
GND
PGND
DL
CS+
CS-
POK (MAX8544)
FB
________________________________________________________________
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.

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MAX8543EEE MAX8544EEP-T MAX8543EEE-T MAX8544EEP
Description Switching Controllers Step-Down Controller Switching Controllers Switching Controllers Switching Controllers
Is it lead-free? Contains lead Contains lead Contains lead Contains lead
Is it Rohs certified? incompatible incompatible incompatible incompatible
Maker Maxim Maxim Maxim Maxim
Parts packaging code SSOP SSOP SSOP SSOP
package instruction 0.150 INCH, 0.250 INCH PITCH, MO-137AB, QSOP-16 0.150 INCH, 0.250 INCH PITCH, MO-137AD, QSOP-20 0.150 INCH, 0.250 INCH PITCH, MO-137AB, QSOP-16 0.150 INCH, 0.250 INCH PITCH, MO-137AD, QSOP-20
Contacts 16 20 16 20
Reach Compliance Code not_compliant not_compliant not_compliant not_compliant
ECCN code EAR99 EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage 13.2 V 13.2 V 13.2 V 13.2 V
Minimum input voltage 3 V 3 V 3 V 3 V
Nominal input voltage 13.2 V 13.2 V 13.2 V 13.2 V
JESD-30 code R-PDSO-G16 R-PDSO-G20 R-PDSO-G16 R-PDSO-G20
JESD-609 code e0 e0 e0 e0
length 4.9 mm 8.65 mm 4.89 mm 8.65 mm
Humidity sensitivity level 1 1 1 1
Number of functions 1 1 1 1
Number of terminals 16 20 16 20
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SSOP SSOP SSOP SSOP
Encapsulate equivalent code SSOP16,.25 SSOP20,.25 SSOP16,.25 SSOP20,.25
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 245 245 245 245
Certification status Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.75 mm 1.73 mm 1.73 mm 1.73 mm
surface mount YES YES YES YES
Switch configuration PUSH-PULL PUSH-PULL PUSH-PULL PUSH-PULL
Maximum switching frequency 1200 kHz 1200 kHz 1200 kHz 1200 kHz
technology BICMOS BICMOS BICMOS BICMOS
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING GULL WING GULL WING
Terminal pitch 0.635 mm 0.635 mm 0.635 mm 0.635 mm
Terminal location DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
width 3.9 mm 3.9 mm 3.9 mm 3.9 mm
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