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The PT4112 is a step-up converter with current sources capable of driving six parallel strings of up to 10 series-connected WLEDs. Each string is terminated with ballast that achieves ±1.5% current regulation accuracy, ensuring even brightness for all WLEDs. The PT4112 generates an output voltage to drive up to totally 60 WLEDs from a 5V to 25V input source;.
to protect itself from fault conditions including built-in open lamp over voltage protection, cycle-by-cycle current limit, over temperature shutdown, input under voltage lock out and integrated soft-start. Additionally, PT4112 provides a driver output for an external PFET connected between the input and inductor. The PFET will be turned off by PT4112 to disconnect the battery from the WLEDs when severe error happens thus any leakage current of the battery is prevented. FEATURES z z z z z z z z z z z z 5V to 25V wide input voltage range 1.2MHz switch frequency with dithering Integrated 1.5A 4.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | PT4110 |
Sharp Electrionic Components |
Side View and Thin Flat Type Phototransistors |
|
| 2 | PT4110 |
Powtech |
High Efficiency White LED Driver |
|
| 3 | PT4110F |
Sharp Electrionic Components |
Side View and Thin Flat Type Phototransistors |
|
| 4 | PT4113 |
PowTech |
480mA LED backlight |
|
| 5 | PT4115 |
PowTech |
1.2A Step-down High Brightness LED Driver |
|
| 6 | PT4115B |
LIZE |
Continuous inductor current conduction mode drop Constant current source |
|
| 7 | PT4115C |
LIZE |
500mA high light ratio LED constant current driver |
|
| 8 | PT4115D |
HOTCHIP |
Built-in MOS tube 1.2A high power LED constant current driver |
|
| 9 | PT4115E |
PowTech |
50V/1.5A Step-down High Brightness LED Driver |
|
| 10 | PT4101 |
Powtech |
White LED Step-Up Converter |
|
| 11 | PT4102 |
Micro Bridge Technology |
Step-up White LED Driver |
|
| 12 | PT4103 |
Powtech |
White LED Step-Up Converter |
|