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OB2269

Liteon
Part Number OB2269
Manufacturer Liteon
Description Current Mode PWM Controller
Published Sep 6, 2008
Detailed Description OB2268 OB2269 Current Mode PWM Controller OB2268/9 is offered in SOP-8 and DIP-8 packages. GENERAL DESCRIPTION OB2268/9...
Datasheet PDF File OB2269 PDF File

OB2269
OB2269

Overview
OB2268 OB2269 Current Mode PWM Controller OB2268/9 is offered in SOP-8 and DIP-8 packages.
GENERAL DESCRIPTION OB2268/9 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications in above 20W power level.
PWM switching frequency at normal operation is externally programmable and trimmed to tight range.
At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss.
Lower standby power and higher conversion efficiency is thus achieved.
www.
DataSheet4U.
com VDD low startup current and low operating current contribute to a reliable power on startup design with OB2268/9.
A large value resistor could thus be used in the startup circuit to minimize the standby power.
The internal slope compensation improves system large signal stability and reduces the possible subharmonic oscillation at high PWM duty cycle output.
Leading-edge blanking on current sense...


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