OB3362F – 4 Channels High Performance LED Driver

Part Number : OB3362F

Function : 4 Channels High Performance LED Driver

Manufactures : On-Bright

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OB3362F image

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Description :

On-Bright Confidential to IVT OB3362F 4 Channels High Performance LED Driver GENERAL Description The OB3362F is a highly integrated and high performance LED driver that optimized for LCD backlight application. It integrates a boost driver and 4 channels of current balancer that optimized to drives multi LED arrays, and thus provides a high performance LED backlight solution with minimized BOM count. The OB3362F contains a PWM boost driver which uses current mode control and fixed frequency operation. The operation frequency can be programmed by setting external resistor value at RI pin. The OB3362F integrates 4 channels current balancer with up to 200mA current capability per channel and it can achieve 3% matching accuracy among LED strings. The minimum voltage of current source is regulated to as lower as 350mV, which benefits the efficiency and improves the IC thermal performance. The OB3362F supports external PWM dimming and internal burst dimming mode which allow flexible control of the backlight luminance. The LED current is directly modulated by external PWM duty cycle when PWM dimming mode is selected. The LED current can be adjusted by an external DC voltage when internal burst dimming mode is selected. TYPICAL APPLICATION Features „ 10V gate drive, better MOS compatibility „ High Efficiency and Compact Size „ 6V to 30V Input Voltage Range „ 3% Matching Accuracy Between 4 LED Strings Control Current „ 100KHz~600KHz Operating Frequency „ Internal/External PWM Dimming „ Very Low Standby Power „ Programmable Over Voltage Protection „ Under Voltage Lockout(UVLO) „ Open/Short LED Protection „ Thermal Shutdown Applications „ LCD Monitor „ LCD TV „ Flat panel display OB3362F is offered in 16-pin ESOP/DIP Figure1: OB3362F Typical Application Schematic ©On-Bright Electronics Confidential -1- Preliminary Datasheet OB_DOC_DS_3362F00 On-Bright Confidential to IVT OB3362F 4 Channels High Performance LED Driver Absolute Maximum Ratings Parameter Vin Input Voltage to GND FAULT to GND LEDX 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 Vin-7V to Vin -0.3V to 40V -0.3V to 7V -20℃ ~ 85℃ 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 Operating Frequency Value 6V to 30V 100KHz to 600KHz Ordering Information Part Number OB3362FRP OB3362FHP OB3362FHPA Description DIP16, Pb-free in Tube ESOP16, Pb-free in Tube ESOP16, Pb-free in T&R Marking Information ©On-Bright Electronics Confidential -2- Preliminary Datas […]

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OB3362F Datasheet

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