This post explains for the PWM Controller.
The Part Number is BIT3260.
The function of this semiconductor is Low Cost LED Driver.
The package is SOP-8 Pin Ttpe
Manufacturers : BiTEK ( Beyond Innovation Technology )
Preview images :
BIT3260 is a high frequency PWM controller integrating required functions for boost conversion in a small SOP-8 package. A low 0.2V feedback voltage and over voltage protection make BIT3260 an ideal controller for LED backlight supplies. CMOS process greatly reduces the operating current compared with similar products. […]
1. Voltage Mode PWM Controller
2. 10V ~ 18V operation voltage
3. Current limit
4. Frequency adjustable
5. Internal Soft-Start
6. Maximum duty cycle output
7. Over temperature protection, OTP
8. Internal Under Voltage Lock Out, UVLO
9. Totem Pole Output