Hot-selling and scarce UBA3070T/N1 LED backlight driver IC SOP8 spot stock

Product Descriptions

The UBA3070 driver IC is the first member of a first generation of power-efficient LED backlight driver ICs.

Highly efficient, flexible and reliable LED drivers can easily be designed using the UBA3070 control IC.

Product Features

■   Switch-mode buck controller that drives strings of LEDs up to 600 V power-efficiently

■   Controller with power-efficient boundary conduction mode of operation:

◆ No reverse recovery losses in freewheel diode

◆ Zero current switching for turn-on of switch

◆ Zero voltage or valley switching for turn-on of switch

◆ Minimal required inductance value and size

■   Direct Pulse Width Modulation (PWM) dimming available

■   Fast transient response through cycle-by-cycle current control, thereby:

◆ Preventing over or undershoots in the LED current

◆ Enabling efficient PWM dimming by quickly turning the converter on and off and thereby removing the need for extra dim switches and high-side drivers

■   Single loosely controlled input voltage required for all LED strings in RGB backlights

■   No binning on LED forward voltage required

■   Protections:

◆ Undervoltage lockout

◆ Leading edge blanking

◆ Overcurrent

◆ Overtemperature

■   Low cost LED driver solution:

◆ No Schottky diode required because of zero-current switching

◆ No dim switch and high-side driver required for PWM dimming

◆ Smaller inductor possible compared to fixed-frequency continuous conduction mode controllers

Product Applications

■   The UBA3070 is typically suited as a high voltage LED backlighting application in LCD televisions and monitors

Product Photos

For more product information, please download the PDF

WhenCE is HIGH (deselected),the device assumes a standby mode at which the power dissipation can be reduced down to250 µW (typical) with CMOS input levels.