TB62763FMG

TOSHIBA BiCD Integrated Circuit Silicon Monolithic TB62763FMG Step Up Type DC/DC Converter for White LED TB62763FMG The TB62763FMG is a high efficient Step-Up Type DC/DC Converter specially designed for constant current driving of White LED. This IC can drive 2-6 Hi-current type white LEDs connected series using a Li-ion battery. This IC contains N-ch MOS-FET Transistor for Coil-Switching, and LED current (IF) is set with an external resistor. This IC is especially for driving back light white LEDs in LCD of PDA, Cellular Phone, or Handy Terminal Equipment. SON8-P-0.65 Weight : 0.017 g (Typ.) Features Variable LED current IF is set with a external resistor: 80mA (typ.) High current accuracy: +/- 1.5% High output power : 3W LED loading @(VOUT=20V, VIN=5V) High efficiency: 80% over (using recommended external parts and recommended circuit condition) Output over voltage shutdown function : Switching operation is shut downed when OVP terminal voltage is over 32.5 V (typ.). Soft start function included Adjustable switching frequency (200kHz-2MHz) Package : SON8-P-0.65 Pin Assignment (top view) SW 1 OVP 2 FB 3 SS 4 8 GND 7 FSET 6 VIN 5 EN Week 1 to 26 SW 1 OVP 2 FB 3 SS 4 8 GND 7 FSET 6 VIN 5 EN Week 27 to 53 Note:This IC could be destroyed in some case if amounted in 180° inverse direction. Please be careful about IC direction in mounting. 1 2015-02-27 Block Diagram VIN 2.2μF (4.7μF) FSET EN TB62763FMG 10μH or 22μH SBD ISENS R S Q Comp. ∑ Ramp Ge...