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OB3350 - Cost Effective LED Controller

Download the OB3350 datasheet PDF. This datasheet also covers the OB3350-On variant, as both devices belong to the same cost effective led controller family and are provided as variant models within a single manufacturer datasheet.

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.

Key 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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (OB3350-On-Bright.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number OB3350
Manufacturer On-Bright
File Size 454.18 KB
Description Cost Effective LED Controller
Datasheet download datasheet OB3350 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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.