DatasheetsPDF.com

OB2354

On-Bright Electronics
Part Number OB2354
Manufacturer On-Bright Electronics
Description Current Mode PWM Power Switch
Published Oct 20, 2019
Detailed Description OB2354 Current Mode PWM Power Switch Freq Shuffling GENERAL DESCRIPTION OB2354 combines a dedicated current mode PWM co...
Datasheet PDF File OB2354 PDF File

OB2354
OB2354

Overview
OB2354 Current Mode PWM Power Switch Freq Shuffling GENERAL DESCRIPTION OB2354 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 in sub 20W range.
OB2354 offers complete protection coverage with automatic self-recovery feature including Cycle-byCycle current limiting (OCP), over load protection (OLP), VDD over voltage clamp and under voltage lockout (UVLO).
Excellent EMI performance is achieved with On-Bright proprietary frequency shuffling technique together with soft switching control at the totem pole gate drive output.
The tone energy at below 20KHZ is minimized in the design and audio noise is eliminated during operation.
OB2354 is offered in DIP8 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 ■ Audio Noise Free Operation ■ Fixed 50KHZ Switching Frequency ■ Internal Synchronized Slope Compensation ■ Low VDD Startup Current and Low Operating Current ■ Leading Edge Blanking on Current Sense Input ■ Good Protection Coverage With Auto Self- Recovery o VDD Over Voltage Clamp and Under Voltage Lockout with Hysteresis (UVLO) o On-Bright Proprietary Line Input Compensated Cycle-by-Cycle Over-current Threshold Setting For Constant Output Power Limiting Over Universal Input Voltage Range.
o Overload Protection (OLP).
o Over voltage Protection(OVP) APPLICATIONS Offline AC/DC flyback converter for ■ Battery Charger ■ PDA power supplies ■ Digital Cameras and Camcorder Adaptor ■ VCR, SVR, STB, DVD&DVCD Player SMPS ■ Set-Top Box Power ■ Auxiliary Power Supply for PC and Server ■ Open-frame SMPS TYPICAL APPLICATION Output Power Table Product OB2354 230VAC±15% Open Frame1 21W 85-265VAC Open Frame1 16W Notes: 1.
Maximum practical continuous power in an open frame design with sufficient drai...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)