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SI9142CW-T1-E3

Description
IC 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20, ROHS COMPLIANT, SOIC-20, Switching Regulator or Controller
CategoryPower/power management    The power supply circuit   
File Size104KB,12 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
Environmental Compliance  
Download Datasheet Parametric Compare View All

SI9142CW-T1-E3 Overview

IC 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20, ROHS COMPLIANT, SOIC-20, Switching Regulator or Controller

SI9142CW-T1-E3 Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
Parts packaging codeSOIC
package instructionSOP, SOP20,.4
Contacts20
Reach Compliance Codeunknown
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage13.2 V
Minimum input voltage4.75 V
Nominal input voltage5 V
JESD-30 codeR-PDSO-G20
JESD-609 codee3
length12.8 mm
Humidity sensitivity level1
Number of functions1
Number of terminals20
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current1 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP20,.4
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height2.54 mm
surface mountYES
Switch configurationPUSH-PULL
Maximum switching frequency1000 kHz
Temperature levelCOMMERCIAL
Terminal surfaceMATTE TIN
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
width7.493 mm
Base Number Matches1
Si9142
Vishay Siliconix
Synchronous Buck Controller for High Performance Processors
FEATURES
D
D
D
D
D
Over-Voltage Protection
Programmable Over-Current Protection
Voltage Mode Control
Precision 1.3-V,
"1.6%
Reference
Drives N-Channel Switch and Rectifier
D
D
D
D
D
800-mA Quiescent Current (f
s
= 200 kHz)
150-mA Standby Current
Integrated “Power Good” Output
Synchronization
Under-Voltage Lockout
DESCRIPTION
The voltage mode, synchronous buck controller is designed
for point-of-use dc/dc conversion in high performance server
and desktop computers. High efficiency is accomplished at full
load by driving high- and low-side n-channel MOSFETs. The
input voltage range has been designed for 4.75 V to 13.2 V to
allow use of either 5 V or 12 V. The 1-MHz switching frequency
combined with the 10-MHz error amplifier provides ultra-fast
transient response necessary in a high performance
microprocessor power supply.
Si9142 is available in both standard and lead (Pb)-free 20-pin
SOIC wide-body packages and specified to operate over the
commercial (0_ to 70_C) temperature range.
A demo board, Si9142DB, is available.
FUNCTIONAL BLOCK DIAGRAM
V
CC
Regulator
V
L(out)
NI
FB
COMP
SYNC
R
OSC
V
L(in)
SS/ENABLE
FB
R
S
S R
Oscillator
Error Amp
+
+
V
L(in)
PWM Comp
IN
V
L(out)
Reference
V
L(in)
V
REF
REF
BST
D
H
LX
Driver
V
L(out)
D
L
PGND
Logic
Control
and
EN BBM
+
OCP
I
CS
170
mA
AGND
NI +17%
OVP
+
+
V
CC
UVLO
PWR_GOOD
NI
−12%
NI +12%
+
Document Number: 70750
S-40809—Rev. D, 26-Apr-04
www.vishay.com
1

SI9142CW-T1-E3 Related Products

SI9142CW-T1-E3 SI9142CW-T1
Description IC 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20, ROHS COMPLIANT, SOIC-20, Switching Regulator or Controller IC 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20, SOIC-20, Switching Regulator or Controller
Is it lead-free? Lead free Contains lead
Is it Rohs certified? conform to incompatible
Parts packaging code SOIC SOIC
package instruction SOP, SOP20,.4 SOP, SOP20,.4
Contacts 20 20
Reach Compliance Code unknown unknown
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 13.2 V 13.2 V
Minimum input voltage 4.75 V 4.75 V
Nominal input voltage 5 V 5 V
JESD-30 code R-PDSO-G20 R-PDSO-G20
JESD-609 code e3 e0
length 12.8 mm 12.8 mm
Number of functions 1 1
Number of terminals 20 20
Maximum operating temperature 70 °C 70 °C
Maximum output current 1 A 1 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP
Encapsulate equivalent code SOP20,.4 SOP20,.4
Package shape RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 260 240
Certification status Not Qualified Not Qualified
Maximum seat height 2.54 mm 2.54 mm
surface mount YES YES
Switch configuration PUSH-PULL PUSH-PULL
Maximum switching frequency 1000 kHz 1000 kHz
Temperature level COMMERCIAL COMMERCIAL
Terminal surface MATTE TIN Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature 40 30
width 7.493 mm 7.493 mm
Base Number Matches 1 1
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