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IR3637ASTRPBF

Description
1% ACCURATE SYNCHRONOUS PWM CONTROLLER
CategoryPower/power management    The power supply circuit   
File Size689KB,19 Pages
ManufacturerInternational Rectifier ( Infineon )
Websitehttp://www.irf.com/
Environmental Compliance
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IR3637ASTRPBF Overview

1% ACCURATE SYNCHRONOUS PWM CONTROLLER

IR3637ASTRPBF Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerInternational Rectifier ( Infineon )
Parts packaging codeSOIC
package instructionLEAD FREE, SOIC-8
Contacts8
Reach Compliance Codeunknow
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage5.5 V
Minimum input voltage4.5 V
Nominal input voltage5 V
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length4.89 mm
Humidity sensitivity level2
Number of functions1
Number of terminals8
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.72 mm
surface mountYES
Switch configurationPUSH-PULL
Maximum switching frequency660 kHz
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.9 mm
Data Sheet No. 94715
IR3637ASPbF
1% ACCURATE SYNCHRONOUS PWM CONTROLLER
FEATURES
0.8V Reference Voltage
Operates with a single 5V Supply
Internal 600KHz Oscillator
Soft-Start Function
Fixed Frequency Voltage Mode
Short Circuit Protection
DESCRIPTION
The IR3637A controller IC is designed to provide a simple
synchronous Buck regulator for on-board DC to DC ap-
plications in a small 8-pin SOIC. The output voltage can
be precisely regulated using the internal 0.8V reference
voltage for low voltage applications.
The IR3637A operates at a fixed internal 600KHz switch-
ing frequency to reduce the component size.
The device features under-voltage lockout for both input
supplies, an external programmable soft-start function
as well as output under-voltage detection that latches
off the device when an output short is detected.
APPLICATIONS
Computer Peripheral Voltage Regulator
Memory Power supplies
Graphics Card
Low cost on-board DC to DC
TYPICAL APPLICATION
12V
C3
5V
C2
C1
Vc
Vcc
HDrv
Q1
D1
C4
SS/SD
LDrv
L1
Q2
C6
Vout
IR3637A
C5
R1
Comp
Gnd
Fb
R2
R3
Figure 1 - Typical application of IR3637A.
ORDERING INFORMATION
PKG
DESIG
S
S
PACKAGE
PIN
PARTS
PARTS
T&R
DESCRIPTION COUNT PER TUBE PER REEL
Oriantation
IR3637ASPbF
8
95
------
Fig A
IR3637ASTRPbF
8
-------
2500
www.irf.com
1

IR3637ASTRPBF Related Products

IR3637ASTRPBF IR3637ASPBF
Description 1% ACCURATE SYNCHRONOUS PWM CONTROLLER 1% ACCURATE SYNCHRONOUS PWM CONTROLLER
Is it Rohs certified? conform to conform to
Maker International Rectifier ( Infineon ) International Rectifier ( Infineon )
Parts packaging code SOIC SOIC
package instruction LEAD FREE, SOIC-8 SOP, SOP8,.25
Contacts 8 8
Reach Compliance Code unknow unknow
ECCN code EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode VOLTAGE-MODE VOLTAGE-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage 5.5 V 5.5 V
Minimum input voltage 4.5 V 4.5 V
Nominal input voltage 5 V 5 V
JESD-30 code R-PDSO-G8 R-PDSO-G8
JESD-609 code e3 e3
length 4.89 mm 4.89 mm
Humidity sensitivity level 2 2
Number of functions 1 1
Number of terminals 8 8
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP
Encapsulate equivalent code SOP8,.25 SOP8,.25
Package shape RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 260 260
Certification status Not Qualified Not Qualified
Maximum seat height 1.72 mm 1.72 mm
surface mount YES YES
Switch configuration PUSH-PULL PUSH-PULL
Maximum switching frequency 660 kHz 660 kHz
Terminal surface Matte Tin (Sn) Matte Tin (Sn)
Terminal form GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature 30 30
width 3.9 mm 3.9 mm
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