Datasheet Brief KTD3133 For full datasheet, click HERE. High Efficiency 2-Channel LED Backlight Driver Features Brief Description Wide input range: 2.7V~5.5V KTD3133 is the ideal power solution for LED backlighting in medium to large size LCD panels. It is a highly integrated High efficiency step-up 2-Channel LED driver step-up DC-DC converter operating with an input voltage 2-Ch current sinks, up to 8-LEDs per string from 2.7V to 5.5V, accommodating 1-cell lithium ion Up to 29.8mA/Ch in backlight mode batteries or 5V supply. It includes a high voltage power +/-0.6% current matching at 20.2mA NMOS, as well as two current sinks, resulting in a simpler +/-1.5% current accuracy at 20.2mA 2 and smaller solution with fewer external components. High I C/PWM dual dimming control scheme switching frequency allows the use of a smaller inductor 2 11-bit I C exponential or linear mapping with and capacitor. programmable transition ramp time Wide range PWM dimming with programable Each of the two regulated current sinks can regulate up to transition ramp time 29.8mA in backlight mode. With a maximum of 32V at the 100Hz to 100kHz frequency output of the step-up converter, each string can connect up 0.2% to 100% duty cycle at 20kHz to 8-LED in series for a 16-LED application. Programmable current sink turn on/off ramp 2 KTD3133 is equipped with I C interface for various time and shape controls. For additional flexibility, PWM dimming with wide Selectable boost converter switching frequency range frequency and duty cycle is included to support 1MHz or 500kHz with 20% shift up option Content Adaptive Brightness Control (CABC). Programmable input PWM hysteresis to Various protection features are built into KTD3133, minimize jitter at low PWM duty cycle including cycle-by-cycle inductor current limit protection, Programmable OVP (25.9V/32V) and current output over-voltage protection, LED fault (open or short) limit (1.8A/2.6A) protection and thermal shutdown protection. LED open/short protection 2 Status reporting through I C interface KTD3133 is available in a RoHS compliant 12-ball 1.19mm x 1.64mm WLCSP or a 16-lead 3mm x 3mm x 0.75mm Thin-QFN package. Applications Smartphone/Tablet Backlight Typical Application White LEDs L D V OUT Up to 8 in series V IN 2.7V to 5.5V 10H C IN C OUT 10F 1F LX VOUT VIN KTD3133 S1 HWEN S2 SCL MCU SDA PWM AGND PGND January 2018 - Revision 04a Page 1 Company Confidential Datasheet Brief KTD3133 Ordering Information 1 Part Number Marking Operating Temperature Package KTD3133EUS-TR MAXXYYZZZZ -40C to +85C WLCSP-12 KTD3133EFJ-TR MAYYZ -40C to +85C TQFN33-16 1. XXYYZZZZ / YYZ are the date code, assembly code and serial number / the date code and assembly code. Kinetic Technologies cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Kinetic Technologies product. No intellectual property or circuit patent licenses are implied. Kinetic Technologies reserves the right to change the circuitry and specifications without notice at any time. January 2018 - Revision 04a Page 2 Company Confidential