Basic Info.
Model NO.
OB2263AP
Application Area
Equipment, Household
Package Outline
SMD(So)/Surface Package
Types of
Power IC
Use
LCD Power Supply IC
shape
Flat
Transport Package
Standard Packaging
Trademark
CHN
Origin
Chn
Production Capacity
1000000
Product Description
Product Description
OB2263AP AC-DC controller and regulator 2263 Transistor
GENERAL DESCRIPTION
OB2263 is a highly integrated current mode PWM control IC optimized for high performance, lowstandby power and cost effective offline flybackconverter applications in sub 30W range.
PWM switching frequency at normal operation isexternally programmable and trimmed to tight rangeAt no load or light load condition, the IC operates inextended burst mode' to minimize switching lossLower standby power and higher conversionefficiency is thus achieved.
VDD low startup current and low operating currentcontribute to a reliable power on startup design with OB2263. A large value resistor could thus be used inthe startup circuit to minimize the standby power.
The internal slope compensation improves systemlarge signal stability and reduces the possible subharmonic oscillation at high PWM duty cycle output.Leading-edge blanking on current sense(CS) inputremoves the signal glitch due to snubber circuit diodereverse recovery and thus greatly reduces the externalcomponent count and system cost in the design.
OB2263 offers complete protection coverage with automatic self-recovery feature including Cycle-by-Cycle current limiting(OCP),over loadprotection(OLP),VDD over voltage clamp and under oltagelockout (UVLO). The Gate-drive output is clampedto maximum 18V to protect the power MOSFET.
Excellent EMl performance is achieved with ON Bright proprietary frequency shufflingtechniquetogether with soft switching control at the totem polegate drive output.
OB2263AP AC-DC controller and regulator 2263 Transistor
GENERAL DESCRIPTION
OB2263 is a highly integrated current mode PWM control IC optimized for high performance, lowstandby power and cost effective offline flybackconverter applications in sub 30W range.
PWM switching frequency at normal operation isexternally programmable and trimmed to tight rangeAt no load or light load condition, the IC operates inextended burst mode' to minimize switching lossLower standby power and higher conversionefficiency is thus achieved.
VDD low startup current and low operating currentcontribute to a reliable power on startup design with OB2263. A large value resistor could thus be used inthe startup circuit to minimize the standby power.
The internal slope compensation improves systemlarge signal stability and reduces the possible subharmonic oscillation at high PWM duty cycle output.Leading-edge blanking on current sense(CS) inputremoves the signal glitch due to snubber circuit diodereverse recovery and thus greatly reduces the externalcomponent count and system cost in the design.
OB2263 offers complete protection coverage with automatic self-recovery feature including Cycle-by-Cycle current limiting(OCP),over loadprotection(OLP),VDD over voltage clamp and under oltagelockout (UVLO). The Gate-drive output is clampedto maximum 18V to protect the power MOSFET.
Excellent EMl performance is achieved with ON Bright proprietary frequency shufflingtechniquetogether with soft switching control at the totem polegate drive output.
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