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OB2287 Datasheet

Part Number OB2287
Manufacturers On-Bright Electronics
Logo On-Bright Electronics
Description High Performance Current Mode PWM Controller
Datasheet OB2287 DatasheetOB2287 Datasheet (PDF)

OB2287 High Performance Current Mode PWM Controller GENERAL DESCRIPTION OB2287 is a highly integrated current mode PWM controller for medium to large power offline flyback converter applications. OB2287 enhances On-Bright’s PWM controller series by offering the Brownout Detection and Protection (BOP). OB2287 offers comprehensive protection coverage including Cycle-by-Cycle current limiting, internal Power-On Soft Start, VDD Under Voltage Lockout (UVLO), VDD Over Voltage Protection(OVP), VDD Clam.

  OB2287   OB2287






Part Number OB2288
Manufacturers On-Bright Electronics
Logo On-Bright Electronics
Description Highly Integrated Current Mode PWM Controller
Datasheet OB2287 DatasheetOB2288 Datasheet (PDF)

OB2288 Highly Integrated Current Mode PWM Controller GENERAL DESCRIPTION OB2288 is a highly integrated current mode PWM controller. With internal maximum 50% duty cycle limit, it is very suitable to be used in large power applications, especially in forward topology. OB2288 offers comprehensive protection coverage including Cycle-by-Cycle current limiting, internal Power-On Soft Start, VDD Under Voltage Lockout (UVLO), VDD Over Voltage Protection(OVP), VDD Clamp, Gate Clamp, Over Load Protection.

  OB2287   OB2287







Part Number OB2283
Manufacturers On-Bright Electronics
Logo On-Bright Electronics
Description High Performance Current Mode PWM Controller
Datasheet OB2287 DatasheetOB2283 Datasheet (PDF)

OB2283 High Performance Current Mode PWM Controller GENERAL DESCRIPTION OB2283 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications. 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.

  OB2287   OB2287







High Performance Current Mode PWM Controller

OB2287 High Performance Current Mode PWM Controller GENERAL DESCRIPTION OB2287 is a highly integrated current mode PWM controller for medium to large power offline flyback converter applications. OB2287 enhances On-Bright’s PWM controller series by offering the Brownout Detection and Protection (BOP). OB2287 offers comprehensive protection coverage including Cycle-by-Cycle current limiting, internal Power-On Soft Start, VDD Under Voltage Lockout (UVLO), VDD Over Voltage Protection(OVP), VDD Clamp, Gate Clamp, Over Load Protection(OLP), Over Temperature Protection (OTP), Brownout Protection (BOP). OB2287 also features protections against pin open and short on selected pins. On-Bright’s proprietary OCP compensation can compensate CCM and DCM mode difference when used in universal AC input applications. Moreover, an internal 1-second restart timer prevents permanent OLP latch when the supply of the controller is provided by other DC sources. In applications where supply is self biased by auxiliary winding, this restart timer will not be triggered. To achieve good EMI performance, On-Bright’s proprietary built-in frequency shuffling is provided, together with soft switching control at the totem pole gate drive output. To meet the increasing stringent standby power requirements, in light or No load, OB2287 operates in On-Bright’s proprietary “Extended Burst Mode” without audible noise. OB2287 is offered in SOP-8 and DIP-8 packages. FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ TYPICAL A.


2014-03-08 : R1114N    OB2287    OB2288    AN6345    KIS-3R33S    KIS-3R33S    MSC1691    SBR10A45SP5    M1N10FB11G    NC2D-JP-DC5V   


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