FP6745 Datasheet | Fiti

Description Features The FP6745 is a step-up DC/DC converter specifically designed for driving WLEDs with a constant current. The FP6745 can drive up 10 white LEDs in series from a Lithium Lon battery. Series connection of LEDs provides identical LED current for uniform brightness and minimizes the number of traces to the LEDs. The FP6745 uses current mode, fixed frequency of approximately 1.3MHz architecture to regulate the LED current through an external current sense resistor. The low feedback voltage of 195m V can minimize power dissipation. Other features include current limit protection, thermal shutdown protection, under-voltage lockout (UVLO), and over-voltage function, which can shut off the device if output voltage reaches above 41V. The FP6745 is available in space saving TSOT-23-5, TSOT-23-6 and SOT-23-6 packages. - Wide Range for PWM Dimming, Ranging from 100Hz to 50k Hz - High Efficiency: 87% - Drives up to 10 WLEDs - Fast 1.3MHz Switching Frequency - Low 195m V Feedback Voltage - Over Voltage Protection - Low Profile TSOT-23-5 ,TSOT-23-6 and SOT-23-6 Packages - Ro HS pliant Applications - Cellular Phone - Digital Camera - LCD Panel Backlight - GPS Receiver - PDA, Handheld puter Pin Assignments S8 Package (TSOT-23-5) (Marking) 1 23 SW GND FB S9 Package (TSOT-23-6) VIN NC EN 654 (Marking) SW GND FB S6 Package (SOT-23-6) VIN NC EN 654 (Marking) SW GND FB Figure 1. Pin Assignment of FP6745 FP6745-1.4-AUG-2013 Ordering Information FP6745-...