ETA ETA1627
The ETA1627 is a driver specially designed for back-lighting. It consists of a high accuracy current sink that allows low duty dimming and a high efficiency step-up converter with an integrated 40V power MOSEFT. It runs with an optimal 0.8MHz frequency that enables use of small external components while still providing best efficiencies.DESCRIPTION
It has an internal current limit as high as 1A, and it can drive up to 10 LEDs and 50mA in total output current. True PWM-Dimming can be achieved through the EN. One of the most important features of ETA1627 is that it provides an accurate current at dimming duty cycle down to 0.1%. This is very important for backlights that need to dim to very low light while still providing good consistency. For maximum protection, the ETA1627 has an internal OVP protection at 38V to prevent the chip from damages when the LED string is not connected to the output. ETA1627 is available in a space-saving SOT23-6 package.FEATURES
● ±10% LED Current Accuracy at 1% Diming Ratio● Capable of 0.1% dimming ratio
● Up to 85% Efficiency (6 LEDs)
● Drive up to 10 LEDs
● 38V Output Over Voltage Protection
● LED string Short Circuit Protection
● True PWM Brightness Control
● 1A current limit
● SOT23-6 Package
APPLICATIONS
● Cellphone and Smartphone● MID or Tablet PC
● Camera
● Car DVR Recorder ORDERING INFORMATION PART ID ETA1627S2G PACKAGE SOT23-6 TOP MARK JGYW (YW: Date Code) TYPICAL APPLICATION ILED (mA) ILED Vs.