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OB2283K Datasheet PDF

On-Bright Electronics OB2283K

OB2283K is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications. OB2283K offers complete protection coverage with auto-recovery including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), over temperature protection (OTP) and VCC under voltage lockout (UVLO).
Part No. OB2283K
Datasheet OB2283K Download
Manufacturer
On-Bright Electronics
Description High Performance Current Mode PWM Controller
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OB2283K datasheet page 1 preview

GENERAL DESCRIPTION

PWM switching frequency at normal operation is internally fixed and is 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. VCC low startup current and low operating current contribute to a reliable power on startup and low standby design with OB2283K. It also provides the protections with latched shut down including over voltage protection (OVP). Excellent EMI performance is achieved with On-Bright proprietary frequency shuffling technique. The tone energy at below 20KHZ is minimized in the design and audio noise is eliminated during operation. OB2283K is offered in SOT23-6 package.

FEATURES

● Power on Soft Start Reducing MOSFET Vds Stress
● Frequency shuffling for EMI
● Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design
● Ultra Low Operating Current at Light Load (0.6mA)
● Audio Noise F...
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