Maker : On-Bright
Part No. : OB5269

  Datasheet PDF : OB5269.pdf
  Cross Reference : OB5269 Cross Reference
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Product Information

www.DataSheet.co.kr High Voltage Green Mode PWM Controller OB5269 GENERAL DESCRIPTION OB5269 is a highly integrated current mode PWM control IC with high voltage start up, optimized for high performance, low standby power consumption and cost effective offline flyback converter applications. PWM switching frequency at normal operation is internally fixed and is trimmed to a tight range. At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss. Very low standby power consumption and very high conversion efficiency is thus achieved. High voltage startup is implemented in OB5269, which features with short startup time and low standby current. OB5269 offers complete protection coverage with auto-recovery including Cycle-by-Cycle current limiting (OCP), over load protection (OLP), and VDD under voltage lockout (UVLO). It also provides the protections with latched shut down including over temperature protection (OTP), and over voltage (fixed or adjustable) protection (OVP). Excellent EMI performance is achieved with OnBright proprietary frequency shuffling technique. The tone energy at below 22KHZ is minimized to avoid audio noise during operation. OB5269 is offered in SOP8 package. FEATURES ■ ■ ■ ■ ■ ■ ■ TYPICAL APPLICATION O n- ©On-Bright Electronics Br ig ht C on fid Confidential -1- en APPLICATIONS Offline AC/DC flyback converter for ■ Battery Charger ■ Power Adaptor ■ Open-frame SMPS tia lt High Voltage Startup Power on Soft Start Reducing MOSFET Vds Stress Frequency shuffling for EMI Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Audio Noise Free Operation Fixed 65KHZ Switching Frequency Comprehensive Protection Coverage o VDD Under Voltage Lockout with Hysteresis (UVLO) o Cycle-by-cycle over current protection (OCP) o Overload Protection (OLP) with autorecovery o Over Temperature Protection (OTP) with latch shut down o VDD Over voltage Protection(OVP) with latch shut down o Adjustable OVP through external Zener o Kt Preliminary Datasheet OB_DOC_DS_526902 ec Datasheet pdf - http://www.DataSheet4U.net/ www.DataSheet.co.kr High Voltage Green Mode PWM Controller OB5269 GENERAL INFORMATION Pin Configuration The OB5269 is offered in SOP8 package, shown as below. RT FB CS GND 1 2 OB5269 3 4 8 7 6 5 HV NC VDD GATE Package Dissipation Rating Package RθJA(℃/W) SOP8 150 on fid OB5269 en X X Package C:SOP8 Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute maximum-rated conditions for extended periods may affect device reliability. Current Mode PWM Controller with HV Startup ht C tia lt X Package Pb free P:lead-free Ordering Information Part Number Description OB5269CP SOP8, Pb-free OB5269CPA SOP8, Pb-free in Taping Absolute Maximum Ratings Parameter Value VDD DC Supply Voltage 30V High-Voltage Pin, HV -0.3 to 500 V VDD Zener Clamp VDD_Clamp+0.1V VoltageNote VDD DC Clamp Current 10 mA FB Input Voltage -0.3 to 7V CS Input Voltage -0.3 to 7V RT Input Voltage -0.3 to 7V Min/Max Operating -40 to 150 ℃ Junction Temperature TJ Min/Max Storage -55 to 160 ℃ Temperature Tstg Lead Temperature 260 ℃ (Soldering, 10secs) Note: VDD_Clamp has a nominal value of 32V. O n- ©On-Bright Electronics Br ig Confidential -2- o Kt Packing Blank:Tube A:Taping Preliminary Datasheet OB_DOC_DS_526902 ec Datasheet pdf - http://www.DataSheet4U.net/ www.DataSheet.co.kr High Voltage Green Mode PWM Controller OB5269 Marking Information YWWZZZ OB5269CP S TERMINAL ASSIGNMENTS Pin Num 1 2 3 4 5 6 8 Pin Name RT FB CS GND Gate VDD HV I/O I I I P O P P Description RECOMMENDED OPERATING CONDITION O n- ©On-Bright Electronics Br ig ht Symbol VDD TA ...

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