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CS51220 Datasheet(PDF) 1 Page - ON Semiconductor

Part No. CS51220
Description  Feed Forward Voltage Mode PWM Controller with Programmable Synchronization
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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CS51220 Datasheet(HTML) 1 Page - ON Semiconductor

 
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© Semiconductor Components Industries, LLC, 2006
July, 2006− Rev. 7
1
Publication Order Number:
CS51220/D
CS51220
Feed Forward Voltage
Mode PWM Controller
with Programmable
Synchronization
CS51220 is a single output PWM Controller with switching
frequency up to 500 kHz. The feed forward voltage mode control
provides excellent line regulation for wide input range. This PWM
controller has a synchronization output allowing programmable phase
delay. For overcurrent protection, the “soft hiccup” technique
effectively limits the output current with maximum flexibility. In
addition, this device includes such features as: soft start,
pulse−by−pulse current limit, programmable foldback current limit,
volt−second clamping, maximum duty cycle, overvoltage and
undervoltage protection, and synchronization input. The CS51220 is
available in 16 SO narrow surface mount package.
Features
Constant Frequency Feed Forward Voltage Mode Control
Programmable Pulse by Pulse Overcurrent Limit
Programmable Foldback Overcurrent Limit with Delay
Soft Hiccup Overcurrent Protection with Programmable Foldback
Frequency Synchronization Output with Programmable Phase Delay
Synchronization Input to Higher or Lower Frequency
Direct Connection to External Opto Isolators
Logic Gate Output Signal
Accurate Volt−Second Clamping
Programmable Soft Start
Logic Input to Disable IC
Line Overvoltage and Undervoltage Monitoring
3.3 V 3% Reference Voltage Output
http://onsemi.com
Device
Package
Shipping
ORDERING INFORMATION
SO−16
48 Units/Rail
SO−16
2500 Tape & Reel
SO−16
D SUFFIX
CASE 751B
A
= Assembly Location
WL, L
= Wafer Lot
YY, Y
= Year
WW, W = Work Week
CT
UV
1
16
SYNCI
OV
DISABLE
ISENSE
FF
ISET
COMP
VREF
SS
VCC
VSD
GND
SYNCO
VO
PIN CONNECTIONS AND
MARKING DIAGRAM
1
16
CS51220ED16
CS51220EDR16


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