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.

If you want to change this design, please consult the manufactured datasheet.

Some features of the TCA62735AFLG electronic project are: Switching Frequency: 1MHz(Typ.), Output Drive Current Capability: Greater than 120mA, 4 Channels Built in Constant Sink Current Drivers, Sink Current Adjustment by External Resistance, Soft Start Function, Integrated protection circuit TSD (Thermal Shut Down).

It is ideal for general and decorative LED lighting, flat panel display backlighting, and other DCDC or ACDC input basedapplications.

It can be programmed to operate in either a constant frequency or constant off-time mode and includes a 15 450V linear regulator which allows it to work from a wide range of input voltages without the need for an external low voltage supply.

HV9910C requires only three external components (apart from the power stage) to produce a controlled LED current making it an ideal solution for low system cost, states Alex Mednik, Application Engineering Director at Supertex.

Furthermore, the low component count allows for higher reliability and minimum board space.

Pricing is USD0.36 each for the HV9910CLG-G and USD0.46 each for the HV9910CNG-G in 1K quantities.

UV LEDs are being put to work in various industrial processes, medical applications, and disinfection solutions.

Bp3126 Led Driver Ic