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MAX738AEPA

Description
Switching Voltage Regulators 5V, Step-Down, Current-Mode PWM DC-DC Converters
CategoryPower/power management    The power supply circuit   
File Size227KB,16 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX738AEPA Overview

Switching Voltage Regulators 5V, Step-Down, Current-Mode PWM DC-DC Converters

MAX738AEPA Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeDIP
package instructionDIP, DIP8,.3
Contacts8
Reach Compliance Codenot_compliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage16 V
Minimum input voltage6 V
Nominal input voltage12 V
JESD-30 codeR-PDIP-T8
JESD-609 codee0
length9.375 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current2 A
Nominal output voltage5 V
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP8,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)245
Certification statusNot Qualified
Maximum seat height4.572 mm
Maximum supply current (Isup)1.7 mA
surface mountNO
Switch configurationBUCK
Maximum switching frequency190 kHz
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
19-0165; Rev 2; 1/96
5V, Step-Down,
Current-Mode PWM DC-DC Converters
__________________General Description
The MAX730A/MAX738A/MAX744A are 5V-output
CMOS, step-down switching regulators. The MAX738A/
MAX744A accept inputs from 6V to 16V and deliver
750mA. The MAX744A guarantees 500mA load capa-
bility for inputs above 6V and has tighter oscillator fre-
quency limits for low-noise (radio) applications. The
MAX730A accepts inputs between 5.2V and 11V and
delivers 450mA for inputs above 6V. Typical efficien-
cies are 85% to 96%. Quiescent supply current is
1.7mA and only 6µA in shutdown.
Pulse-width modulation (PWM) current-mode control
provides precise output regulation and excellent tran-
sient responses. Output voltage accuracy is guaran-
teed to be ±5% over line, load, and temperature varia-
tions. Fixed-frequency switching allows easy filtering of
output ripple and noise, as well as the use of small
external components. These regulators require only a
single inductor value to work in most applications, so
no inductor design is necessary.
The MAX730A/MAX738A/MAX744A also feature cycle-
by-cycle current limiting, overcurrent limiting, undervolt-
age lockout, and programmable soft-start protection.
________________________________Features
o
750mA Load Currents (MAX738A/MAX744A)
o
High-Frequency, Current-Mode PWM
o
159kHz to 212.5kHz Guaranteed Oscillator
Frequency Limits (MAX744A)
o
85% to 96% Efficiencies
o
1.7mA Quiescent Current
o
6µA Shutdown Supply Current
o
Single Preselected Inductor Value,
No Component Design Required
o
Overcurrent, Soft-Start, and Undervoltage
Lockout Protection
o
Cycle-by-Cycle Current Limiting
o
8-Pin DIP/SO Packages (MAX730A)
MAX730A/MAX738A/MAX744A
_________________Ordering Information
PART
MAX730ACPA
MAX730ACSA
MAX730AC/D
MAX730AEPA
MAX730AESA
MAX730AMJA
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP
___________________________Applications
Portable Instruments
Cellular Phones and Radios
Personal Communicators
Distributed Power Systems
Computer Peripherals
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
__________Typical Operating Circuit
INPUT
6V TO 16V
V+
33µH
LX
OUTPUT
5V
_________________Pin Configurations
TOP VIEW
68µF
SHDN
1
MAX738A
MAX744A
ON/OFF
SHDN
OUT
8
7
V+
LX
GND
OUT
100µF
REF
2
SS
3
CC
4
MAX730A
MAX738A
MAX744A
DIP
6
5
REF
SS
GND
CC
Pin Configurations continued on last page.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

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Description Switching Voltage Regulators 5V, Step-Down, Current-Mode PWM DC-DC Converters Motor / Motion / Ignition Controllers u0026 Drivers 5.1 to 40V Step-Down Power Management IC Development Tools Switching Voltage Regulators 5V Step-Down DC/DC Converter Switching Voltage Regulators 5V Step-Down DC/DC Converter Switching Voltage Regulators 5V, Step-Down, Current-Mode PWM DC-DC Converters Switching Voltage Regulators 5V Step-Down DC/DC Converter Switching Voltage Regulators 5V Step-Down DC/DC Converter
Is it lead-free? Contains lead - - Contains lead Contains lead Contains lead Contains lead -
Is it Rohs certified? incompatible - - incompatible incompatible incompatible incompatible -
Maker Maxim - - Maxim Maxim Maxim Maxim -
Parts packaging code DIP - - DIP DIP DIP SOIC -
package instruction DIP, DIP8,.3 - - DIP, DIP8,.3 DIP, DIP8,.3 DIP, DIP8,.3 SOP, SOP16,.4 -
Contacts 8 - - 8 8 8 16 -
Reach Compliance Code not_compliant - - not_compliant not_compliant not_compliant not_compliant -
ECCN code EAR99 - - EAR99 EAR99 EAR99 EAR99 -
Analog Integrated Circuits - Other Types SWITCHING REGULATOR - - SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR -
control mode CURRENT-MODE - - CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE -
Control Technology PULSE WIDTH MODULATION - - PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION -
Maximum input voltage 16 V - - 16 V 11 V 16 V 16 V -
Minimum input voltage 6 V - - 6 V 5.2 V 6 V 6 V -
Nominal input voltage 12 V - - 12 V 9 V 12 V 12 V -
JESD-30 code R-PDIP-T8 - - R-PDIP-T8 R-PDIP-T8 R-GDIP-T8 R-PDSO-G16 -
JESD-609 code e0 - - e0 e0 e0 e0 -
Humidity sensitivity level 1 - - 1 1 1 1 -
Number of functions 1 - - 1 1 1 1 -
Number of terminals 8 - - 8 8 8 16 -
Maximum operating temperature 85 °C - - 70 °C 70 °C 125 °C 85 °C -
Maximum output current 2 A - - 2 A 2 A 2 A 2 A -
Nominal output voltage 5 V - - 5 V 5 V 5 V 5 V -
Package body material PLASTIC/EPOXY - - PLASTIC/EPOXY PLASTIC/EPOXY CERAMIC, GLASS-SEALED PLASTIC/EPOXY -
encapsulated code DIP - - DIP DIP DIP SOP -
Encapsulate equivalent code DIP8,.3 - - DIP8,.3 DIP8,.3 DIP8,.3 SOP16,.4 -
Package shape RECTANGULAR - - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR -
Package form IN-LINE - - IN-LINE IN-LINE IN-LINE SMALL OUTLINE -
Peak Reflow Temperature (Celsius) 245 - - 245 245 245 245 -
Certification status Not Qualified - - Not Qualified Not Qualified Not Qualified Not Qualified -
Maximum seat height 4.572 mm - - 4.572 mm 4.572 mm 5.08 mm 2.65 mm -
Maximum supply current (Isup) 1.7 mA - - 1.7 mA 1.7 mA 1.7 mA 1.7 mA -
surface mount NO - - NO NO NO YES -
Switch configuration BUCK - - BUCK BUCK BUCK BUCK -
Maximum switching frequency 190 kHz - - 190 kHz 210 kHz 216.5 kHz 212.5 kHz -
technology CMOS - - CMOS CMOS CMOS CMOS -
Temperature level INDUSTRIAL - - COMMERCIAL COMMERCIAL MILITARY INDUSTRIAL -
Terminal surface Tin/Lead (Sn/Pb) - - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) -
Terminal form THROUGH-HOLE - - THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE GULL WING -
Terminal pitch 2.54 mm - - 2.54 mm 2.54 mm 2.54 mm 1.27 mm -
Terminal location DUAL - - DUAL DUAL DUAL DUAL -
Maximum time at peak reflow temperature NOT SPECIFIED - - NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED -
width 7.62 mm - - 7.62 mm 7.62 mm 7.62 mm 7.5 mm -
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