OB2365xCP

GENERAL DESCRIPTION

OB2365x combines a dedicated current mode PWM controller with a high voltage power MOSFET. It is optimized for high performance, low standby power, and cost effective off-line flyback converter applications.

OB2365x offers comprehensive protection coverage with auto-recovery including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), VDD under voltage lockout (UVLO) and internalover temperature protection (OTP).Excellent EMI performance is achieved with On-Bright proprietary frequency shuffling technique.

The tone energy at below 23KHz is minimized in the design and audio noise is eliminated during operation.

OB2365x is offered in SOP8 package.


APPLICATIONS

Offline AC/DC flyback converter for

AC/DC adapter

PDA power supplies

Digital Cameras and Camcorder Adapter

VCR, SVR, STB, DVD&DVCD Player SMPS

Set-Top Box Power

Auxiliary Power Supply for PC and Server

Open-frame SMPS


FEATURES

Standby power < 75mW at universal AC input

Power on soft start reducing MOSFET Vds stress

Frequency shuffling for EMI

Extended burst mode control for improved efficiency and minimum standby power design

Audio noise free operation

Fixed 65KHZ (typical) switching frequency

Internal synchronized slope compensation

Low VDD startup current and low operating current

Leading edge blanking on current sense input

Comprehensive protection coverage

oVDD Under Voltage Lockout with hysteresis (UVLO)

oVDD Over Voltage Protection (VCC OVP)

oCycle-by-cycle over current thresholdsetting for constant output power limiting over universal input voltage range

oOver Load Protection (OLP) with auto-recovery

oOutput diode short protection with auto-recovery

TYPICAL APPLICATION


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