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OB3663 Dataheets PDF



Part Number OB3663
Manufacturers On-Bright
Logo On-Bright
Description Dimmable Flyback PSR Controller
Datasheet OB3663 DatasheetOB3663 Datasheet (PDF)

On-Bright Confidential to EUCHIPS OB3663 Dimmable Flyback PSR Controller GENERAL DESCRIPTION The OB3663 is a high performance single stage AC/DC fly-back controller for dimmable LED luminaires. The OB3663 integrates advanced digital processing core to eliminate visible flicker. OB3663 offers fast startup feature, constant on-time control for power factor correction (PFC), zero current detector (ZCD) to ensure transition mode (TM) operation, and accurate current regulation. OB3663 offers compre.

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On-Bright Confidential to EUCHIPS OB3663 Dimmable Flyback PSR Controller GENERAL DESCRIPTION The OB3663 is a high performance single stage AC/DC fly-back controller for dimmable LED luminaires. The OB3663 integrates advanced digital processing core to eliminate visible flicker. OB3663 offers fast startup feature, constant on-time control for power factor correction (PFC), zero current detector (ZCD) to ensure transition mode (TM) operation, and accurate current regulation. OB3663 offers comprehensive protection coverage including VDD under voltage lockout (UVLO), VDD over voltage protection, load voltage over voltage protection, cycle-by-cycle current limiting, over temperature protection, LED string open/short protection, driver output clamping for external power MOSFET protection, current sense resistor short protection, and transformer saturation protection. OB3663 is offered in SOP14 package (OB3663CP) and SSOP10 package (OB3663LP) . FEATURES  Primary-Side Control with Single Stage PFC Topology  No visible flicker  No bleeder design  Total harmonic distortion <20% with PF>0.9  Fast startup time (<0.5s without dimmer)  Transition Mode (TM) operation to achieve high efficiency  High current accuracy  Source driving operation mode  Cycle-by-Cycle Current Limiting (OCP)  VDD Over Voltage Protection  Output Over Voltage Protection  Over-Temperature Protection  VDD Under Voltage Lockout (UVLO)  LED string open protection  LED string short protection  Current sense resistor short/open protection  Transformer saturation protection APPLICATIONS  Dimmable LED lighting ©On-Bright Electronics Confidential -1- Preliminary Datasheet OB_DOC_DS_366304 On-Bright Confidential to EUCHIPS TYPICAL APPLICATION OB3663 Dimmable Flyback PSR Controller OB3663 1 PHASE 2 REF SD 14 BL 13 3 NC I_DET 12 4 CS GND 11 AC 5 NC COMP 10 6 SW 7 GATE FB 9 VDD 8 Figure1: OB3663CP Typical Application Schematic Figure2: OB3663LP Typical Application Schematic ©On-Bright Electronics Confidential 2 Preliminary Datasheet OB_DOC_DS_366304 On-Bright Confidential to EUCHIPS GENERAL INFORMATION Package Dissipation Rating Package RθJA (℃/W) SOP14 90 SSOP10 138 Ordering Information Part Number Description OB3663CP SOP14, Pb free in Tube OB3663CPA SOP14, Pb free in T&R OB3663LP SSOP10, Pb free in Tube OB3663LPA SSOP10, Pb free in T&R Note1: All Devices are offered in Pb-free Package if not otherwise noted. OB3663 Dimmable Flyback PSR Controller Absolute Maximum Ratings Parameter VDD Input Voltage to GND GATE to GND SW to GND FB to GND COMP, REF and CS to GND PHASE,I_DET, BL, SD,PD,OPT Operating Ambient Temp. TA Operating Junction Temp. TJ Min/Max Storage Temp. Tstg Lead Temp. (10 Sec) Value -0.3V to 24V -0.7V to 24V -0.7V to 20V -0.7V to 7V -0.7V to 7V -0.7V to 5V -40 ~85℃ -40 ~150℃ -55 ~150℃ 260 ℃ Note2: Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress r.


GD5F1GQ4UAYIG OB3663 uP1713


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