DatasheetsPDF.com

OB3350 Dataheets PDF



Part Number OB3350
Manufacturers On-Bright
Logo On-Bright
Description Cost Effective LED Controller
Datasheet OB3350 DatasheetOB3350 Datasheet (PDF)

OB3350 Cost Effective LED Controller GENERAL DESCRIPTION OB3350 is a highly integrated and cost effective Light Emitting Diode (LED) driver optimized for LCD monitor and LCD TV backlighting application. It provides a high performance LED backlight solution with minimized BOM count. The OB3350 contains a PWM boost driver which uses current mode control and fixed frequency operation to regulate the LED current. The LED current is sensed through an external current sense resistor. The voltage acro.

  OB3350   OB3350



Document
OB3350 Cost Effective LED Controller GENERAL DESCRIPTION OB3350 is a highly integrated and cost effective Light Emitting Diode (LED) driver optimized for LCD monitor and LCD TV backlighting application. It provides a high performance LED backlight solution with minimized BOM count. The OB3350 contains a PWM boost driver which uses current mode control and fixed frequency operation to regulate the LED current. The LED current is sensed through an external current sense resistor. The voltage across the sensing resistor is compared with reference level of 300mV, the error is amplified to control the pulse width of the power switch thus to regulate the current flowing the LED. The OB3350 offers external low frequency PWM (LPWM) dimming method for a wide range of dimming control. The OB3350 offers comprehensive protection such as power MOSFET over current protection (OCP), output over voltage protection (OVP), IC power supply under voltage lockout (UVLO), and LED open protection. FEATURES Current Mode PWM Controller With Good Dynamic Response 8V to 35V Input Voltage Range External PWM Dimming Mode Over Voltage Protection Over Current Protection Under Voltage Lockout (UVLO) Thermal Shutdown APPLICATIONS LCD Monitor LCD TV Flat panel display The OB3350 is offered in SOP-8 Packages. TYPICAL APPLICATION Figure1. OB3350 Typical Application Schematic ©On-Bright Electronics Confidential -1- Preliminary datasheet OB_DOC_DS_335000 OB3350 Cost Effective LED Controller Absolute Maximum Ratings Parameter VIN Input Voltage to GND I/O to GND Operating Ambient Temp. TA Operating Junction Temp. TJ Min/Max Storage Temp. Tstg Lead Temp. (10 Sec) Value -0.3V to 40V -0.3V to 7V -40 ~ 85 -40 ~ 150 -55 ~150 260 Note: 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. Recommended Operating Range Parameter Vin Voltage Burst Dimming Frequency Value 8V to 35V 100Hz to 1KHz Package Thermal Characteristics Parameter Thermal Resistance JA (SOP) Value 150 /W Ordering Information Part Number Description OB3350CP SOP8, pb-free in tube OB3350CPA SOP8, pb-free in T&R OB3350 X X X Cost Effective LED Controller Package C:SOP8 Package Pb- free Packing P:Pb-free Blank:Tube A: Taping Package Marking Information Y:Year Code WW:Week Code(01-52) ZZZ:Lot Code C:SOP8 Package P:Pb-free Package S:Internal Code(Optional) ©On-Bright Electronics Confidential -2- Preliminary datasheet OB_DOC_DS_335000 OB3350 Cost Effective LED Controller Pin Configuration VIN GATE GND CS 1 8 2 7 OB3350 3 6 4 5 PWM OVP COMP FB No. Name 1 VIN 2 GATE 3 GND 4 CS 5 FB 6 COMP 7 OVP 8 PWM I/O Power I/O GND I/O I/O I/O I/O I/O .


SMK0765F OB3350 TEF6624


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