TCA62735AFLG

TCA62735AFLG www.DataSheet4U.com TOSHIBA CMOS INTEGRATED CIRCIUTS SILICON MONOLITHIC TCA62735AFLG Charge Pump type DC/DC Converter for White LED Driver The TCA62735AFLG is a charge pump type DC/DC Converter specially designed for constant current driving of White LED. This IC can outputs LED current 120mA or more to 2.8-4.2V input. This IC observes the power-supply voltage and the output voltage, and does an automatic change to the best of step up mode 1, 1.5 or 2 times. It is possible to prolong the battery longevity to its maximum. This IC is especially for driving back light white LEDs in LCD of PDA, Cellular Phone, or Handy Terminal Equipment. This device is Pb-free product. VQFN16-P-0404-0.65 Weight: 0.016 g (Typ.) Characteristics Fabricating with CMOS Process Package : VQFN16-P-0404-0.65 Input Voltage : 2.8V (Min) Switching Frequency : 1MHz (Typ.) Output Drive Current Capability : Greater than 120mA 4 Channels Built in Constant Sink Current Drivers (3 or 4 LEDs can be driven.) Sink Current Adjustment by External Resistance Soft Start Function Output Open Detection Function Thermal Shut Down Function (TSD) 1/18 2007-06-21 TCA62735AFLG www.DataSheet4U.com Pin Assignment (top view) ILED1 ILED2 ILED3 ILED4 EN CTL0 CTL1 CTL2 GND C2+ C2− C1− ISET VOUT Explanation of Terminals No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol EN CTL0 CTL1 CTL2 ISET VOUT VIN C1+ C1− C2− C2+ GND ILED4 ILED3 ILED2 ILED1 Constant Sink Current Driver terminal. G...