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CS51221EDTB16G データシート(PDF) 1 Page - ON Semiconductor

部品番号 CS51221EDTB16G
部品情報  Enhanced Voltage Mode PWM Controller
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メーカー  ONSEMI [ON Semiconductor]
ホームページ  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

CS51221EDTB16G データシート(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2005
September, 2005 − Rev. 8
1
Publication Order Number:
CS51221/D
CS51221
Enhanced Voltage Mode
PWM Controller
The CS51221 fixed frequency feed forward voltage mode PWM
controller contains all of the features necessary for basic voltage mode
operation. This PWM controller has been optimized for high
frequency primary side control operation. In addition, this device
includes such features as: Soft−Start, accurate duty cycle limit control,
less than 50
mA startup current, over and undervoltage protection, and
bidirectional synchronization. The CS51221 is available in a 16 lead
SOIC narrow surface mount package.
Features
1.0 MHz Frequency Capability
Fixed Frequency Voltage Mode Operation, with Feed Forward
Thermal Shutdown
Undervoltage Lock−Out
Accurate Programmable Max Duty Cycle Limit
1.0 A Sink/Source Gate Drive
Programmable Pulse−By−Pulse Overcurrent Protection
Leading Edge Current Sense Blanking
75 ns Shutdown Propagation Delay
Programmable Soft−Start
Undervoltage Protection
Overvoltage Protection with Programmable Hysteresis
Bidirectional Synchronization
25 ns GATE Rise and Fall Time (1.0 nF Load)
3.3 V 3% Reference Voltage Output
Pb−Free Packages are Available*
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
VFB
ISET
1
16
COMP
RTCT
SS
OV
LGND
UV
VREF
FF
VCC
SYNC
PGND
ISENSE
VC
GATE
PIN CONNECTIONS AND
MARKING DIAGRAM
1
16
http://onsemi.com
Device
Package
Shipping
ORDERING INFORMATION
CS51221ED16
SOIC−16
48 Units / Rail
CS51221EDR16
SOIC−16 2500 Tape & Reel
CS51221EDR16G
SOIC−16
(Pb−Free)
2500 Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
CS51221ED16G
SOIC−16
(Pb−Free)
48 Units / Rail
CS51221EDTB16G
TSSOP−16
(Pb−Free)
96 Units / Rail
CS51221EDTB16R2G TSSOP−16
(Pb−Free)
SOIC−16
D SUFFIX
CASE 751B
1
16
TSSOP−16
DTB SUFFIX
CASE 948F
CS51221= Specific Device Code
A
= Assembly Location
WL, L
= Wafer Lot
YY, Y
= Year
WW, W = Work Week
G
= Pb−Free Package
1
16
2500 Tape & Reel


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